/* ============================================================
   PDF Tools – style.css
   Production-quality stylesheet
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand colours */
  --color-primary:        #E8573F;
  --color-primary-dark:   #C94228;
  --color-primary-light:  #FF7A5C;
  --color-primary-bg:     #FDF0ED;
  --color-secondary:      #2D3748;
  --color-secondary-light:#4A5568;

  /* Neutrals */
  --color-bg:             #F7F8FA;
  --color-surface:        #FFFFFF;
  --color-surface-2:      #F0F2F5;
  --color-border:         #E2E8F0;
  --color-border-light:   #EDF2F7;

  /* Text */
  --color-text:           #1A202C;
  --color-text-muted:     #4A5568;
  --color-text-subtle:    #718096;
  --color-text-inverse:   #FFFFFF;

  /* Status */
  --color-success:        #38A169;
  --color-success-bg:     #F0FFF4;
  --color-warning:        #D69E2E;
  --color-error:          #E53E3E;
  --color-info:           #3182CE;

  /* Typography */
  --font-family:          'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs:         0.75rem;    /* 12px */
  --font-size-sm:         0.875rem;   /* 14px */
  --font-size-base:       1rem;       /* 16px */
  --font-size-lg:         1.125rem;   /* 18px */
  --font-size-xl:         1.25rem;    /* 20px */
  --font-size-2xl:        1.5rem;     /* 24px */
  --font-size-3xl:        1.875rem;   /* 30px */
  --font-size-4xl:        2.25rem;    /* 36px */
  --font-size-5xl:        3rem;       /* 48px */

  /* Spacing */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;

  /* Radii */
  --radius-sm:   0.375rem;
  --radius-md:   0.625rem;
  --radius-lg:   1rem;
  --radius-xl:   1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:  0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm:  0 1px 3px 0 rgba(0, 0, 0, 0.07), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
  --shadow-md:  0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg:  0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl:  0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06), 0 0 1px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.10), 0 0 1px rgba(0, 0, 0, 0.08);
  --shadow-primary: 0 4px 14px rgba(232, 87, 63, 0.35);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   200ms ease;
  --transition-slow:   300ms ease;
  --transition-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max:  1200px;
  --container-wide: 1400px;
  --nav-height:     64px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

p {
  color: var(--color-text-muted);
}

/* ============================================================
   UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.text-center { text-align: center; }
.text-muted   { color: var(--color-text-muted); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes progressBar {
  from { width: 0%; }
  to   { width: 100%; }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

.animate-fade-in-up {
  animation: fadeInUp var(--transition-slow) ease both;
}

.animate-fade-in {
  animation: fadeIn var(--transition-slow) ease both;
}

/* Staggered card entrance */
.tool-card:nth-child(1)  { animation-delay: 0ms; }
.tool-card:nth-child(2)  { animation-delay: 60ms; }
.tool-card:nth-child(3)  { animation-delay: 120ms; }
.tool-card:nth-child(4)  { animation-delay: 180ms; }
.tool-card:nth-child(5)  { animation-delay: 240ms; }
.tool-card:nth-child(6)  { animation-delay: 300ms; }
.tool-card:nth-child(7)  { animation-delay: 360ms; }
.tool-card:nth-child(8)  { animation-delay: 420ms; }
.tool-card:nth-child(9)  { animation-delay: 480ms; }
.tool-card:nth-child(10) { animation-delay: 540ms; }
.tool-card:nth-child(11) { animation-delay: 600ms; }
.tool-card:nth-child(12) { animation-delay: 660ms; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-spring);
}

.navbar__logo-icon svg {
  width: 18px;
  height: 18px;
  color: #fff;
}

.navbar__logo:hover .navbar__logo-icon {
  transform: scale(1.08) rotate(-3deg);
}

.navbar__logo-text {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.navbar__logo-text span {
  color: var(--color-primary);
}

/* Nav links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}

.navbar__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.navbar__link:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.navbar__link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

/* Right side controls */
.navbar__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Language switcher */
.lang-switcher {
  position: relative;
}

.lang-btn,
.lang-switcher__button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.lang-btn:hover,
.lang-switcher__button:hover {
  color: var(--color-text);
  border-color: var(--color-secondary-light);
  box-shadow: var(--shadow-xs);
}

.lang-switcher__button .globe-icon,
.lang-btn svg:first-child {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.lang-switcher__button .chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.lang-switcher.open .lang-switcher__button .chevron {
  transform: rotate(180deg);
}

.lang-switcher__dropdown,
.lang-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: 1000;
  display: none;
  animation: fadeInUp 150ms ease both;
}

.lang-switcher.open .lang-switcher__dropdown,
.lang-switcher.open .lang-dropdown {
  display: block;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-option:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.lang-option.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
  font-weight: 600;
}

.lang-option__flag {
  font-size: 1.1em;
  line-height: 1;
}

/* Hamburger menu */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.navbar__hamburger:hover {
  background: var(--color-surface-2);
}

.navbar__hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.navbar__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.navbar__mobile-menu {
  display: none;
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: var(--color-surface);
  z-index: 999;
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  border-top: 1px solid var(--color-border);
  overflow-y: auto;
}

.navbar__mobile-menu.open {
  display: flex;
  animation: fadeIn 200ms ease both;
}

.navbar__mobile-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar__mobile-link:hover,
.navbar__mobile-link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.navbar__mobile-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2) 0;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  -webkit-user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary button */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232, 87, 63, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-primary);
}

/* Secondary button */
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-secondary-light);
  color: var(--color-text);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:active {
  transform: translateY(0);
}

/* Ghost button */
.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

/* Size variants */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
  font-weight: 700;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  padding: var(--space-24) 0 var(--space-20);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at center,
    rgba(232, 87, 63, 0.08) 0%,
    rgba(232, 87, 63, 0.03) 50%,
    transparent 70%
  );
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  border: 1px solid rgba(232, 87, 63, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  animation: fadeInUp 400ms ease both;
}

.hero__title {
  font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-5xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  animation: fadeInUp 400ms 80ms ease both;
}

.hero__title-accent {
  color: var(--color-primary);
  position: relative;
}

.hero__subtitle {
  font-size: clamp(var(--font-size-lg), 2.5vw, var(--font-size-2xl));
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  animation: fadeInUp 400ms 140ms ease both;
}

.hero__description {
  font-size: var(--font-size-base);
  color: var(--color-text-subtle);
  max-width: 520px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
  animation: fadeInUp 400ms 200ms ease both;
}

.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  animation: fadeInUp 400ms 260ms ease both;
}

.hero__badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-10);
  flex-wrap: wrap;
  animation: fadeInUp 400ms 320ms ease both;
}

.hero__badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

.hero__badge svg {
  width: 18px;
  height: 18px;
  color: var(--color-success);
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header__label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section-header__title {
  font-size: clamp(var(--font-size-2xl), 3.5vw, var(--font-size-4xl));
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ============================================================
   TOOL CARDS GRID
   ============================================================ */
.tools-section {
  padding: var(--space-20) 0;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-card);
  animation: fadeInUp 400ms ease both;
  overflow: hidden;
}

.tool-card:hover {
  border-color: rgba(232, 87, 63, 0.25);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
  color: inherit;
}

.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg,
    rgba(232, 87, 63, 0.03) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-card__icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  transition: all var(--transition-spring);
  flex-shrink: 0;
}

.tool-card__icon-wrap svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  transition: transform var(--transition-spring);
}

.tool-card:hover .tool-card__icon-wrap {
  background: var(--color-primary);
}

.tool-card:hover .tool-card__icon-wrap svg {
  color: #fff;
  transform: scale(1.1);
}

.tool-card__name {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  transition: color var(--transition-fast);
}

.tool-card:hover .tool-card__name {
  color: var(--color-primary);
}

.tool-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}

.tool-card__arrow {
  display: flex;
  align-items: center;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-subtle);
  font-size: var(--font-size-xs);
  font-weight: 600;
  gap: var(--space-1);
  transition: all var(--transition-fast);
}

.tool-card__arrow svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.tool-card:hover .tool-card__arrow {
  color: var(--color-primary);
}

.tool-card:hover .tool-card__arrow svg {
  transform: translateX(3px);
}

/* Coming Soon overlay */
.tool-card--coming-soon {
  pointer-events: none;
  cursor: default;
}

.tool-card--coming-soon:hover {
  transform: none;
  box-shadow: var(--shadow-card);
  border-color: var(--color-border);
}

.tool-card--coming-soon::after {
  content: attr(data-badge);
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: var(--color-secondary);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.tool-card--coming-soon .tool-card__icon-wrap,
.tool-card--coming-soon .tool-icon {
  background: var(--color-surface-2);
}

.tool-card--coming-soon .tool-card__icon-wrap svg,
.tool-card--coming-soon .tool-icon svg {
  color: var(--color-text-subtle);
}

.tool-card--coming-soon .tool-card__name,
.tool-card--coming-soon .tool-card__description,
.tool-card--coming-soon .tool-name,
.tool-card--coming-soon .tool-desc {
  opacity: 0.55;
}

/* Coming Soon notice (full-page tool placeholder) */
.coming-soon-notice {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-12) var(--space-6);
}
.coming-soon-icon {
  margin-bottom: var(--space-5);
}
.coming-soon-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}
.coming-soon-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 420px;
  margin: 0 0 var(--space-6);
  line-height: 1.6;
}

/* ============================================================
   TRUST BADGES SECTION
   ============================================================ */
.trust-section {
  padding: var(--space-16) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
}

.trust-item__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.trust-item__icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.trust-item__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.trust-item__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
  max-width: 280px;
}

/* ============================================================
   STEPS SECTION (How It Works)
   ============================================================ */
.steps-section {
  padding: var(--space-20) 0;
  background: var(--color-bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(16.66% + 28px);
  right: calc(16.66% + 28px);
  height: 2px;
  background: linear-gradient(90deg,
    var(--color-primary) 0%,
    var(--color-primary-light) 100%
  );
  opacity: 0.25;
  z-index: 0;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-item__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  color: #fff;
  font-size: var(--font-size-xl);
  font-weight: 800;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
  box-shadow: 0 4px 12px rgba(232, 87, 63, 0.3);
  flex-shrink: 0;
}

.step-item__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
  box-shadow: 0 4px 12px rgba(232, 87, 63, 0.2);
  flex-shrink: 0;
}

.step-item__icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-primary);
}

.step-item__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.step-item__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-section {
  padding: var(--space-20) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(232, 87, 63, 0.2);
}

.faq-item.open {
  border-color: rgba(232, 87, 63, 0.3);
  box-shadow: 0 2px 12px rgba(232, 87, 63, 0.08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  padding: var(--space-5) var(--space-6);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-item.open .faq-question {
  color: var(--color-primary);
}

.faq-question__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.faq-question__icon svg {
  width: 14px;
  height: 14px;
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.faq-item.open .faq-question__icon {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.faq-item.open .faq-question__icon svg {
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease, padding 300ms ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer__inner {
  padding: 0 var(--space-6) var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--space-4);
}

/* ============================================================
   SEO CONTENT SECTION
   ============================================================ */
.seo-section {
  padding: var(--space-20) 0;
  background: var(--color-bg);
}

.seo-content {
  max-width: 800px;
  margin: 0 auto;
}

.seo-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  margin-top: var(--space-8);
  color: var(--color-text);
}

.seo-content h2:first-child {
  margin-top: 0;
}

.seo-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.seo-content ul {
  list-style: disc;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.seo-content ul li {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-1);
}

/* ============================================================
   AD PLACEHOLDER
   ============================================================ */
.ad-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-2);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-subtle);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.ad-placeholder--leaderboard {
  width: 100%;
  max-width: 728px;
  height: 90px;
  margin: var(--space-8) auto;
}

.ad-placeholder--rectangle {
  width: 300px;
  height: 250px;
}

.ad-placeholder--sidebar {
  width: 300px;
  height: 600px;
}

/* ============================================================
   UPLOAD ZONE
   ============================================================ */
.upload-section {
  padding: var(--space-16) 0;
}

.upload-zone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-16) var(--space-8);
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 280px;
}

.upload-zone:hover,
.upload-zone:focus-within {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
  box-shadow: 0 0 0 4px rgba(232, 87, 63, 0.08);
}

.upload-zone.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
  box-shadow: 0 0 0 6px rgba(232, 87, 63, 0.12);
  transform: scale(1.01);
}

.upload-zone__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--color-primary-bg);
  border: 2px solid rgba(232, 87, 63, 0.2);
  border-radius: var(--radius-xl);
  transition: all var(--transition-spring);
}

.upload-zone__icon svg {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
  transition: transform var(--transition-spring);
}

.upload-zone:hover .upload-zone__icon,
.upload-zone.drag-over .upload-zone__icon {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 8px 20px rgba(232, 87, 63, 0.35);
  transform: translateY(-2px);
}

.upload-zone:hover .upload-zone__icon svg,
.upload-zone.drag-over .upload-zone__icon svg {
  color: #fff;
  transform: translateY(-2px);
}

.upload-zone__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
}

.upload-zone__divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
  width: 180px;
}

.upload-zone__divider::before,
.upload-zone__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.upload-zone__hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
}

.upload-zone__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* File list */
.file-list {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.file-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.file-item:hover {
  border-color: rgba(232, 87, 63, 0.2);
  box-shadow: var(--shadow-xs);
}

.file-item__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.file-item__icon svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
}

.file-item__info {
  flex: 1;
  min-width: 0;
}

.file-item__name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-item__size {
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
}

.file-item__remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  color: var(--color-text-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.file-item__remove:hover {
  background: #FEE2E2;
  color: var(--color-error);
}

.file-item__drag-handle {
  color: var(--color-text-subtle);
  cursor: grab;
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.file-item__drag-handle:hover {
  color: var(--color-text-muted);
}

.file-item__drag-handle svg {
  width: 16px;
  height: 16px;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress-container {
  margin: var(--space-6) 0;
}

.progress-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg,
    var(--color-primary) 0%,
    var(--color-primary-light) 100%
  );
  border-radius: var(--radius-full);
  transition: width 300ms ease;
  position: relative;
  overflow: hidden;
}

.progress-bar__fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: -200%;
  width: 200%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%
  );
  animation: shimmer 1.5s infinite;
}

/* Processing state */
.processing-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-12) var(--space-8);
  text-align: center;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.processing-state__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.processing-state__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
  margin: 0;
}

/* ============================================================
   RESULT SECTION
   ============================================================ */
.result-section {
  padding: var(--space-8) 0;
  animation: fadeInUp 400ms ease both;
}

.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.result-card__success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--color-success-bg);
  border: 2px solid rgba(56, 161, 105, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}

.result-card__success-icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-success);
}

.result-card__title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.result-card__subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.result-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.result-stat {
  text-align: center;
}

.result-stat__value {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.result-stat__label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.result-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* Image preview grid (for PDF → JPG) */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

.preview-item {
  position: relative;
  aspect-ratio: 3/4;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

.preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-item__label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-1) var(--space-2);
  background: rgba(0, 0, 0, 0.55);
  font-size: var(--font-size-xs);
  color: #fff;
  font-weight: 600;
  text-align: center;
}

.preview-item__download {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: 28px;
  height: 28px;
  background: rgba(0, 0, 0, 0.55);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border: none;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.preview-item:hover .preview-item__download {
  opacity: 1;
}

.preview-item__download svg {
  width: 14px;
  height: 14px;
}

/* ============================================================
   TOOL PAGE LAYOUT
   ============================================================ */
.tool-page {
  min-height: calc(100vh - var(--nav-height));
  padding: var(--space-12) 0 var(--space-20);
}

.tool-page__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.tool-page__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  transition: color var(--transition-fast);
}

.tool-page__back:hover {
  color: var(--color-primary);
}

.tool-page__back svg {
  width: 16px;
  height: 16px;
}

.tool-page__title {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.tool-page__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto;
}

/* Tool options panel */
.tool-options {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-card);
}

.tool-options__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}

/* Info box (used for notes/disclaimers inside tool cards) */
.info-box {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: #FEF0ED;
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-primary);
}

.info-box-icon {
  flex-shrink: 0;
  margin-top: 1px;
}

.info-box-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

.option-group {
  margin-bottom: var(--space-5);
}

.option-group:last-child {
  margin-bottom: 0;
}

.option-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

/* Radio / pill options */
.option-pills {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.option-pill {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.option-pill:hover {
  border-color: rgba(232, 87, 63, 0.3);
  color: var(--color-text);
}

.option-pill.selected,
.option-pill input:checked + & {
  background: var(--color-primary-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
}

/* Range slider */
.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 2px 6px rgba(232, 87, 63, 0.35);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 10px rgba(232, 87, 63, 0.45);
}

.range-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 2px 6px rgba(232, 87, 63, 0.35);
  cursor: pointer;
  border: none;
}

/* Text input */
.text-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.text-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(232, 87, 63, 0.12);
}

.text-input::placeholder {
  color: var(--color-text-subtle);
}

/* Slider row (label + slider + value display) */
.slider-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.slider-row .range-slider {
  flex: 1;
}

.slider-value {
  min-width: 48px;
  text-align: right;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}

/* Color picker row */
.color-picker-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.color-input {
  -webkit-appearance: none;
  appearance: none;
  width: 40px;
  height: 40px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2px;
  cursor: pointer;
  background: none;
}

.color-input::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-input::-webkit-color-swatch {
  border: none;
  border-radius: calc(var(--radius-md) - 4px);
}

.color-input::-moz-color-swatch {
  border: none;
  border-radius: calc(var(--radius-md) - 4px);
}

.color-hex {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

/* File info pages line */
.file-info-pages {
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
  margin: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-secondary);
  color: rgba(255, 255, 255, 0.75);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr repeat(2, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand {}

.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.footer__brand-logo-icon {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer__brand-logo-icon svg {
  width: 16px;
  height: 16px;
  color: #fff;
}

.footer__brand-name {
  font-size: var(--font-size-base);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.footer__brand-name span {
  color: var(--color-primary);
}

.footer__tagline {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin: 0;
  max-width: 260px;
  color: rgba(255, 255, 255, 0.55);
}

.footer__col-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.4);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer__bottom-link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.45);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__bottom-link:hover {
  color: rgba(255, 255, 255, 0.85);
}

/* ============================================================
   NOTIFICATION / TOAST
   ============================================================ */
.toast-container {
  position: fixed;
  top: calc(var(--nav-height) + var(--space-4));
  right: var(--space-4);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--color-text);
  color: #fff;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  pointer-events: all;
  animation: fadeInUp 300ms ease both;
  min-width: 260px;
  max-width: 380px;
}

.toast--success {
  background: var(--color-secondary);
  border-left: 3px solid var(--color-success);
}

.toast--error {
  background: var(--color-secondary);
  border-left: 3px solid var(--color-error);
}

.toast--info {
  background: var(--color-secondary);
  border-left: 3px solid var(--color-info);
}

.toast__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ============================================================
   BADGE
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 700;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}

.badge--primary {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.badge--success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge--secondary {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
}

/* ============================================================
   DIVIDER
   ============================================================ */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-8) 0;
}

/* ============================================================
   SKELETON LOADER
   ============================================================ */
@keyframes skeleton-shine {
  from { background-position: -200px 0; }
  to   { background-position: calc(200px + 100%) 0; }
}

.skeleton {
  background: linear-gradient(90deg,
    var(--color-surface-2) 0px,
    #e9ebee 40px,
    var(--color-surface-2) 80px
  );
  background-size: 200px 100%;
  animation: skeleton-shine 1.5s infinite linear;
  border-radius: var(--radius-sm);
}

/* ============================================================
   RESPONSIVE: TABLET (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --nav-height: 56px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  /* Navbar */
  .navbar__links {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }

  /* Hero */
  .hero {
    padding: var(--space-16) 0 var(--space-12);
  }

  .hero__badges {
    gap: var(--space-4);
  }

  /* Tools grid: 2 columns */
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  /* Trust */
  .trust-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  /* Steps */
  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .steps-grid::before {
    display: none;
  }

  /* Footer */
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  /* Result stats */
  .result-stats {
    gap: var(--space-6);
  }

  /* Preview grid */
  .preview-grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  }

  /* Ad */
  .ad-placeholder--leaderboard {
    height: 60px;
  }
}

/* ============================================================
   RESPONSIVE: MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  /* Tools grid: 1 column */
  .tools-grid {
    grid-template-columns: 1fr;
  }

  /* Hero */
  .hero {
    padding: var(--space-12) 0 var(--space-10);
  }

  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__cta .btn {
    width: 100%;
    justify-content: center;
  }

  .hero__badges {
    flex-direction: column;
    gap: var(--space-3);
  }

  /* Upload zone */
  .upload-zone {
    padding: var(--space-10) var(--space-4);
    min-height: 200px;
  }

  /* Footer */
  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Tool options */
  .option-pills {
    flex-direction: column;
  }

  /* Result */
  .result-actions {
    flex-direction: column;
  }

  .result-actions .btn {
    width: 100%;
  }

  /* Section headers */
  .section-header {
    margin-bottom: var(--space-8);
  }

  /* FAQ */
  .faq-question {
    padding: var(--space-4);
    font-size: var(--font-size-sm);
  }

  .faq-answer__inner {
    padding: 0 var(--space-4) var(--space-4);
    padding-top: var(--space-3);
  }
}

/* ============================================================
   UNLOCK PDF — Password & Status Components
   ============================================================ */

/* Status banner */
.unlock-status {
  margin-top: var(--space-4);
}

.unlock-status-msg {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.5;
}

.unlock-status--locked {
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
  border: 1px solid rgba(232, 87, 63, 0.2);
}

.unlock-status--info {
  background: #EFF6FF;
  color: #1E40AF;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.unlock-status--error {
  background: #FEF2F2;
  color: #991B1B;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.unlock-status-msg svg {
  flex-shrink: 0;
}

/* Password section */
.password-section {
  margin-top: var(--space-4);
}

.password-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.password-input-group {
  display: flex;
  align-items: stretch;
  position: relative;
}

.password-field {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  padding-right: calc(var(--space-4) + 36px); /* room for toggle */
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.password-field:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(232, 87, 63, 0.12);
}

.password-field::placeholder {
  color: var(--color-text-subtle);
}

.password-toggle-btn {
  position: absolute;
  right: var(--space-2);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-subtle);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.password-toggle-btn:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.password-error {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-error);
  font-weight: 500;
}

/* ============================================================
   PROTECT PDF — Password Input & File Info Components
   ============================================================ */

/* Selected file info bar (shared pattern for single-file tools) */
.selected-file-info {
  margin-top: var(--space-4);
}

.selected-file-details {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.selected-file-text {
  flex: 1;
  min-width: 0;
}

.selected-file-name {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.selected-file-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
  margin-top: 2px;
}

/* Warning banner (e.g. unsupported file format) */
.tool-warning {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: #fef3cd;
  border: 1.5px solid #ffc107;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: #856404;
  line-height: 1.4;
}

.tool-warning svg {
  flex-shrink: 0;
}

/* Usage info (daily limit counter) */
.usage-info {
  margin-top: var(--space-4);
  text-align: center;
}
.usage-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
  margin: 0;
}

/* Daily limit reached banner */
.limit-reached {
  margin-top: var(--space-4);
}
.limit-reached-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-primary-bg);
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-lg);
}
.limit-reached-inner svg {
  flex-shrink: 0;
}
.limit-reached-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary-dark);
  margin: 0 0 2px;
}
.limit-reached-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0;
}

/* Options panel (reusable for protect / other tools) */
.options-panel {
  margin-top: var(--space-5);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.options-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-light);
}

.option-group-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

/* Option group spacing */
.option-group {
  margin-bottom: var(--space-5);
}

/* ── Pill buttons (rotate-pdf angle selector) ───────────────────── */
.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.pill-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(232, 87, 63, 0.06);
}

.pill-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.pill-btn.active svg {
  stroke: #fff;
}

/* ── Toggle switch (rotate-pdf all-pages) ───────────────────────── */
.toggle-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.toggle-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--color-border);
  border-radius: 12px;
  transition: background var(--transition-fast);
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.toggle-switch input:checked + .toggle-track {
  background: var(--color-primary);
}

.toggle-switch input:checked + .toggle-track::after {
  transform: translateX(20px);
}

/* ── Page picker (rotate-pdf page selection) ────────────────────── */
.page-picker-wrap {
  margin-top: var(--space-3);
  padding: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.picker-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.page-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  max-height: 200px;
  overflow-y: auto;
}

.page-checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.page-checkbox-label:hover {
  background: rgba(232, 87, 63, 0.06);
}

.page-checkbox-label input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
}

.picker-actions {
  display: flex;
  gap: var(--space-2);
}

/* ── File info bar (split-pdf, rotate-pdf) ──────────────────────── */
.file-info-bar {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.file-info-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.file-name-label {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.page-count-badge {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(232, 87, 63, 0.1);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.icon-btn:hover {
  background: rgba(232, 87, 63, 0.1);
  color: var(--color-primary);
}

/* ── Radio options (split-pdf mode selector) ────────────────────── */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.radio-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.radio-option:hover {
  border-color: var(--color-primary);
  background: rgba(232, 87, 63, 0.03);
}

.radio-option:has(input:checked) {
  border-color: var(--color-primary);
  background: rgba(232, 87, 63, 0.06);
}

.radio-custom {
  position: relative;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
  transition: border-color var(--transition-fast);
}

.radio-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-option input[type="radio"]:checked ~ .radio-custom {
  border-color: var(--color-primary);
}

.radio-option input[type="radio"]:checked ~ .radio-custom::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
}

.radio-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.radio-text strong {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.radio-text small {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ── Range input group (split-pdf) ──────────────────────────────── */
.range-group {
  margin-bottom: var(--space-4);
}

.input-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.input-hint {
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.input-hint code {
  background: rgba(0,0,0,0.06);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: inherit;
}

.input-error {
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  color: #ef4444;
  font-weight: 500;
}

/* ── Progress wrap (split-pdf, rotate-pdf, jpg-to-pdf) ──────────── */
.progress-wrap {
  margin-top: var(--space-5);
  text-align: center;
}

.progress-bar-track {
  width: 100%;
  height: 8px;
  background: var(--color-border-light);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.progress-bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.progress-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ── Result section (split-pdf, rotate-pdf) ─────────────────────── */
.result-section {
  margin-top: var(--space-5);
  text-align: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.result-icon {
  margin-bottom: var(--space-3);
}

.result-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

/* ── Button size variants ───────────────────────────────────────── */
.btn-xs {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  margin-top: var(--space-3);
}

/* ── Preview section ────────────────────────────────────────────── */
.preview-section {
  margin-top: var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface);
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
}

.preview-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.preview-frame {
  width: 100%;
  height: 500px;
  border: none;
  background: #f5f5f5;
}

.preview-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border-light);
  justify-content: center;
}

@media (max-width: 768px) {
  .pill-group {
    flex-wrap: wrap;
  }
  .page-checkbox-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  }
  .preview-frame {
    height: 350px;
  }
}

/* Password input wrapper (input + toggle button) */
.password-input-wrap {
  position: relative;
  display: flex;
  align-items: stretch;
}

.password-input-wrap .text-input {
  padding-right: calc(var(--space-4) + 36px);
}

.password-input-wrap .password-toggle-btn {
  position: absolute;
  right: var(--space-2);
  top: 50%;
  transform: translateY(-50%);
}

/* Password match indicator */
.password-match-indicator {
  min-height: 1.25rem;
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.password-match-indicator.match-success {
  color: var(--color-success);
}

.password-match-indicator.match-error {
  color: var(--color-error);
}

/* Option note / info callout */
.option-note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: #F0F4FF;
  border: 1px solid rgba(49, 130, 206, 0.15);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.option-note svg {
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--color-info);
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .navbar,
  .footer,
  .ad-placeholder,
  .toast-container {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ============================================================
   FOCUS VISIBLE GLOBAL
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ============================================================
   SCROLLBAR (Webkit)
   ============================================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-surface-2);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-subtle);
}

/* ============================================================
   SELECTION
   ============================================================ */
::selection {
  background: rgba(232, 87, 63, 0.15);
  color: var(--color-text);
}

/* ============================================================
   HTML ↔ CSS CLASS COMPATIBILITY
   Maps HTML class names (dash-case) to BEM-style CSS rules.
   ============================================================ */

/* --- Navbar --- */
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
}

.navbar .logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar .logo:hover svg:first-child {
  transform: scale(1.08) rotate(-3deg);
}

.navbar .logo svg:first-child {
  transition: transform var(--transition-spring);
}

.navbar .logo-text {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  justify-content: flex-end;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

button.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

button.hamburger:hover {
  background: var(--color-surface-2);
}

button.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

button.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

button.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

button.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero --- */
.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  border: 1px solid rgba(232, 87, 63, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  animation: fadeInUp 400ms ease both;
}

.hero-title {
  font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-5xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  animation: fadeInUp 400ms 80ms ease both;
}

.hero-subtitle {
  font-size: clamp(var(--font-size-lg), 2.5vw, var(--font-size-2xl));
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  animation: fadeInUp 400ms 140ms ease both;
}

.hero-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-subtle);
  max-width: 520px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
  animation: fadeInUp 400ms 200ms ease both;
}

.hero-visual {
  margin-top: var(--space-10);
  animation: fadeInUp 400ms 260ms ease both;
}

.hero-visual svg {
  margin: 0 auto;
}

/* --- Section Headers --- */
.section-title {
  font-size: clamp(var(--font-size-2xl), 3.5vw, var(--font-size-4xl));
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --- Tool Cards --- */
.tool-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  transition: all var(--transition-spring);
  flex-shrink: 0;
}

.tool-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  transition: transform var(--transition-spring);
}

.tool-card:hover .tool-icon {
  background: var(--color-primary);
}

.tool-card:hover .tool-icon svg {
  color: #fff;
  transform: scale(1.1);
}

.tool-name {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  transition: color var(--transition-fast);
}

.tool-card:hover .tool-name {
  color: var(--color-primary);
}

.tool-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}

.tool-arrow {
  display: flex;
  align-items: center;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-subtle);
  font-size: var(--font-size-xs);
  font-weight: 600;
  gap: var(--space-1);
  transition: all var(--transition-fast);
}

.tool-card:hover .tool-arrow {
  color: var(--color-primary);
}

/* --- Trust --- */
.trust-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary-bg);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
  margin-bottom: var(--space-4);
}

.trust-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

/* --- Steps (How-To) --- */
.howto-section {
  padding: var(--space-20) 0;
  background: var(--color-bg);
}

.step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  color: #fff;
  font-size: var(--font-size-xl);
  font-weight: 800;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
  box-shadow: 0 4px 12px rgba(232, 87, 63, 0.3);
  flex-shrink: 0;
}

.step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
  box-shadow: 0 4px 12px rgba(232, 87, 63, 0.2);
  flex-shrink: 0;
}

.step-icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-primary);
}

/* --- Footer --- */
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand {
  grid-column: 1 / -1;
}

.footer .logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.footer .logo-text {
  font-size: var(--font-size-base);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.footer-tagline {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin: 0;
  max-width: 260px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  grid-column: 1 / -1;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col h4 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-1);
}

.footer-col a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-8);
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
}

/* --- Tool Page --- */
.tool-header {
  text-align: center;
  padding: var(--space-12) 0 var(--space-6);
}

.tool-header-icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.tool-header h1 {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.tool-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto;
}

.tool-section {
  padding: 0 0 var(--space-16);
}

.tool-section .tool-card {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

/* Upload zone inner elements */
.upload-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--color-primary-bg);
  border: 2px solid rgba(232, 87, 63, 0.2);
  border-radius: var(--radius-xl);
  transition: all var(--transition-spring);
}

.upload-icon svg {
  transition: transform var(--transition-spring);
}

.upload-zone:hover .upload-icon,
.upload-zone.drag-over .upload-icon {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 8px 20px rgba(232, 87, 63, 0.35);
  transform: translateY(-2px);
}

.upload-zone:hover .upload-icon svg,
.upload-zone.drag-over .upload-icon svg {
  color: #fff;
  transform: translateY(-2px);
}

.upload-primary {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
}

.upload-secondary {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
}

.btn-outline {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
  box-shadow: var(--shadow-xs);
}

.btn-outline:hover {
  background: var(--color-surface-2);
  border-color: var(--color-secondary-light);
  color: var(--color-text);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* File list */
.file-list-container {
  margin-top: var(--space-6);
}

.file-list-header {
  margin-bottom: var(--space-4);
}

.file-list-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.file-list-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
  margin-top: var(--space-1);
}

.file-list-actions {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-3);
}

.action-area {
  margin-top: var(--space-6);
  text-align: center;
}

/* Progress bar track */
.progress-bar-track {
  width: 100%;
  height: 8px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg,
    var(--color-primary) 0%,
    var(--color-primary-light) 100%
  );
  border-radius: var(--radius-full);
  transition: width 300ms ease;
  position: relative;
  overflow: hidden;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: -200%;
  width: 200%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%
  );
  animation: shimmer 1.5s infinite;
}

/* Result section inner elements */
.result-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}

.result-icon--success {
  background: var(--color-success-bg);
  border: 2px solid rgba(56, 161, 105, 0.2);
}

.result-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

/* Ad aliases */
.ad-leaderboard {
  width: 100%;
  max-width: 728px;
  height: 90px;
  margin: var(--space-8) auto;
}

/* --- Responsive overrides for compatibility classes --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  button.hamburger {
    display: flex;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .tool-header {
    padding: var(--space-8) 0 var(--space-4);
  }

  .ad-leaderboard {
    height: 60px;
  }
}

@media (max-width: 480px) {
  .footer-links {
    grid-template-columns: 1fr;
  }
}

/* --- Mobile Menu --- */
.mobile-menu {
  display: none;
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: var(--color-surface);
  z-index: 999;
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  border-top: 1px solid var(--color-border);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu.open {
  display: flex;
  animation: fadeIn 200ms ease both;
}

.mobile-menu-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.mobile-menu-link:hover,
.mobile-menu-link.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.mobile-menu-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2) 0;
}

.mobile-menu-langs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.mobile-menu-langs .lang-option {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}