/* ============================================
   FastConvert — Design System & Global Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Pacifico&display=swap');

/* --- CSS Custom Properties (Tokens) --- */
:root {
  /* Slate Blue Palette — Light Mode */
  --clr-bg-primary: #f4f6fa;
  --clr-bg-secondary: #ffffff;
  --clr-bg-tertiary: #ebeef5;
  --clr-bg-glass: rgba(255, 255, 255, 0.72);
  --clr-surface: #ffffff;
  --clr-surface-hover: #f0f2f8;
  --clr-accent: #4f6df5;
  --clr-accent-hover: #3b57d9;
  --clr-accent-glow: rgba(79, 109, 245, 0.25);
  --clr-accent-subtle: rgba(79, 109, 245, 0.08);
  --clr-success: #22c55e;
  --clr-success-bg: rgba(34, 197, 94, 0.1);
  --clr-warning: #f59e0b;
  --clr-danger: #ef4444;
  --clr-text-primary: #1e293b;
  --clr-text-secondary: #64748b;
  --clr-text-tertiary: #94a3b8;
  --clr-border: #e2e8f0;
  --clr-border-accent: rgba(79, 109, 245, 0.3);
  --clr-shadow: rgba(15, 23, 42, 0.06);
  --clr-shadow-lg: rgba(15, 23, 42, 0.1);
  --clr-ad-bg: #f8f9fc;
  --clr-ad-border: #dde1ec;
  --clr-ad-text: #b0b8c9;
  --clr-footer-bg: #1e293b;
  --clr-footer-text: #cbd5e1;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px var(--clr-shadow);
  --shadow-md: 0 4px 16px var(--clr-shadow);
  --shadow-lg: 0 8px 32px var(--clr-shadow-lg);
  --shadow-accent: 0 4px 24px var(--clr-accent-glow);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --sidebar-width: 200px;
  --max-content-width: 780px;
  --header-height: 72px;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --clr-bg-primary: #0f172a;
  --clr-bg-secondary: #1e293b;
  --clr-bg-tertiary: #1a2236;
  --clr-bg-glass: rgba(30, 41, 59, 0.8);
  --clr-surface: #1e293b;
  --clr-surface-hover: #263249;
  --clr-accent: #6381f7;
  --clr-accent-hover: #7b94ff;
  --clr-accent-glow: rgba(99, 129, 247, 0.3);
  --clr-accent-subtle: rgba(99, 129, 247, 0.1);
  --clr-success: #4ade80;
  --clr-success-bg: rgba(74, 222, 128, 0.1);
  --clr-text-primary: #f1f5f9;
  --clr-text-secondary: #94a3b8;
  --clr-text-tertiary: #64748b;
  --clr-border: #334155;
  --clr-border-accent: rgba(99, 129, 247, 0.35);
  --clr-shadow: rgba(0, 0, 0, 0.2);
  --clr-shadow-lg: rgba(0, 0, 0, 0.35);
  --clr-ad-bg: #162032;
  --clr-ad-border: #2a3a52;
  --clr-ad-text: #4a5a72;
  --clr-footer-bg: #0b1120;
  --clr-footer-text: #94a3b8;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--clr-bg-primary);
  color: var(--clr-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: var(--clr-accent);
  transition: color var(--transition-fast);
}
a:hover { color: var(--clr-accent-hover); }

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

input, textarea, select {
  font-family: inherit;
  outline: none;
}

/* --- Utility Classes --- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ============================================
   Header
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 3vw, 40px);
  background: var(--clr-bg-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--transition-base);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Pacifico', cursive;
  font-weight: 400;
  font-size: 1.6rem;
  color: var(--clr-accent);
  letter-spacing: 0;
  user-select: none;
  cursor: pointer;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.logo:hover {
  color: var(--clr-accent-hover);
  transform: translateY(-1px);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--clr-accent), #a78bfa);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.1rem;
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Header Navigation Links */
.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-nav-link {
  padding: 7px 14px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  letter-spacing: 0.1px;
}

.header-nav-link:hover {
  background: var(--clr-surface-hover);
  color: var(--clr-accent);
}

.header-nav-link.active {
  background: var(--clr-accent-subtle);
  color: var(--clr-accent);
  font-weight: 600;
}

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--clr-bg-tertiary);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--clr-text-secondary);
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  background: var(--clr-surface-hover);
  color: var(--clr-accent);
  border-color: var(--clr-border-accent);
}

/* ============================================
   Main Layout (3-Column with Sidebars)
   ============================================ */
.main-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr var(--sidebar-width);
  gap: 24px;
  max-width: 1360px;
  width: 100%;
  margin: 0 auto;
  padding: 32px clamp(16px, 3vw, 40px);
  flex: 1;
}

/* --- Sidebar Ad Containers --- */
.ad-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  align-self: start;
  height: fit-content;
}

.ad-placeholder {
  background: var(--clr-ad-bg);
  border: 2px dashed var(--clr-ad-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--clr-ad-text);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  padding: 16px 10px;
  transition: all var(--transition-base);
}

.ad-placeholder-sidebar {
  min-height: 600px;
  writing-mode: vertical-lr;
  text-orientation: mixed;
}

.ad-placeholder-banner {
  min-height: 100px;
  width: 100%;
  margin-top: 28px;
}

/* ============================================
   Page Sections / Views
   ============================================ */
.page-view {
  display: none;
  animation: fadeInView 0.35s ease;
}
.page-view.active {
  display: block;
}

@keyframes fadeInView {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Converter — Hero & Dropzone
   ============================================ */
.converter-hero {
  text-align: center;
  margin-bottom: 36px;
}

.converter-hero h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--clr-text-primary), var(--clr-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.converter-hero p {
  color: var(--clr-text-secondary);
  font-size: 1rem;
  max-width: 480px;
  margin: 0 auto;
}

/* Dropzone */
.dropzone-wrapper {
  background: var(--clr-surface);
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.dropzone-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-accent-subtle), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.dropzone-wrapper:hover,
.dropzone-wrapper.drag-over {
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-accent);
}
.dropzone-wrapper:hover::before,
.dropzone-wrapper.drag-over::before {
  opacity: 1;
}

.dropzone-wrapper.has-file {
  border-style: solid;
  border-color: var(--clr-success);
  background: var(--clr-success-bg);
}

.dropzone-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  display: block;
  transition: transform var(--transition-base);
}
.dropzone-wrapper:hover .dropzone-icon {
  transform: translateY(-4px) scale(1.05);
}

.dropzone-text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-text-primary);
  margin-bottom: 6px;
}

.dropzone-hint {
  font-size: 0.82rem;
  color: var(--clr-text-tertiary);
}

.dropzone-file-info {
  display: none;
  align-items: center;
  gap: 12px;
  justify-content: center;
  font-weight: 500;
  color: var(--clr-text-primary);
}
.dropzone-file-info .file-icon { font-size: 1.5rem; }
.dropzone-file-info .file-name {
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dropzone-file-info .file-size {
  font-size: 0.82rem;
  color: var(--clr-text-tertiary);
  font-weight: 400;
}
.dropzone-file-info .remove-file {
  width: 28px; height: 28px;
  border-radius: var(--radius-full);
  background: var(--clr-danger);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.dropzone-file-info .remove-file:hover {
  transform: scale(1.1);
  box-shadow: 0 2px 8px rgba(239,68,68,0.35);
}

/* --- Image Preview --- */
.image-preview-container {
  display: none;
  margin-top: 20px;
  justify-content: center;
}

.image-preview-container img {
  max-height: 180px;
  border-radius: var(--radius-md);
  border: 2px solid var(--clr-border);
  box-shadow: var(--shadow-md);
  object-fit: contain;
}

/* --- Conversion Controls --- */
.controls-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.format-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}

.format-selector label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
}

.format-selector select {
  padding: 10px 36px 10px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-primary);
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: all var(--transition-fast);
}
.format-selector select:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
}

/* Quality Slider */
.quality-control {
  display: none;
  align-items: center;
  gap: 8px;
}
.quality-control.visible { display: flex; }

.quality-control label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
  white-space: nowrap;
}

.quality-control input[type="range"] {
  width: 100px;
  accent-color: var(--clr-accent);
  cursor: pointer;
}

.quality-value {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--clr-accent);
  min-width: 32px;
  text-align: center;
}

/* Convert Button */
.btn-convert {
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-accent), #7c5cf5);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-accent);
  position: relative;
  overflow: hidden;
}
.btn-convert::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.15));
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn-convert:hover:not(:disabled)::after { opacity: 1; }
.btn-convert:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px var(--clr-accent-glow);
}
.btn-convert:active:not(:disabled) { transform: translateY(0); }
.btn-convert:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-convert .spinner {
  display: none;
  font-size: 1.3rem;
  line-height: 1;
  margin-right: 8px;
  animation: runFast 0.4s ease-in-out infinite;
}

.btn-convert .spinner::before {
  content: '🏃💨';
}
.btn-convert.loading .spinner { display: inline-block; }
.btn-convert.loading .btn-text { display: none; }
.btn-convert.loading .btn-loading-text { display: inline; }
.btn-loading-text { display: none; }

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

@keyframes runFast {
  0% { transform: translateY(0) skewX(0deg); }
  25% { transform: translateY(-3px) skewX(-15deg); }
  50% { transform: translateY(0) skewX(0deg); }
  75% { transform: translateY(-3px) skewX(-15deg); }
  100% { transform: translateY(0) skewX(0deg); }
}

/* --- Download Result --- */
.result-area {
  display: none;
  margin-top: 28px;
  text-align: center;
  animation: fadeInView 0.4s ease;
}
.result-area.visible { display: block; }

.result-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}

.result-card .result-success-icon {
  font-size: 2.4rem;
  margin-bottom: 8px;
}

.result-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 4px;
}

.result-meta {
  font-size: 0.82rem;
  color: var(--clr-text-tertiary);
  margin-bottom: 18px;
}
.result-meta span {
  font-weight: 600;
  color: var(--clr-accent);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-success), #16a34a);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(34,197,94,0.25);
}
.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(34,197,94,0.35);
  color: #fff;
}

/* ============================================
   Trust Badge
   ============================================ */
.trust-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 32px;
  padding: 14px 24px;
  background: var(--clr-success-bg);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: var(--radius-full);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.trust-badge .shield-icon {
  font-size: 1.3rem;
}

.trust-badge p {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-success);
}

/* ============================================
   How To Use Section
   ============================================ */
.how-to-section {
  margin-top: 48px;
}

.how-to-section h2 {
  text-align: center;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin-bottom: 28px;
  color: var(--clr-text-primary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.step-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-border-accent);
}

.step-number {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--clr-accent), #7c5cf5);
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  box-shadow: var(--shadow-accent);
}

.step-card .step-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.step-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--clr-text-primary);
}

.step-card p {
  font-size: 0.82rem;
  color: var(--clr-text-secondary);
  line-height: 1.5;
}

/* Arrow connector between steps */
.step-card:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--clr-text-tertiary);
  font-weight: 700;
  z-index: 2;
}

/* ============================================
   About Us Page
   ============================================ */
.page-content-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 48px);
  box-shadow: var(--shadow-sm);
}

.page-content-card h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 20px;
  color: var(--clr-text-primary);
}

.page-content-card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 10px;
  color: var(--clr-text-primary);
}

.page-content-card p {
  color: var(--clr-text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
  margin-bottom: 14px;
}

.page-content-card ul {
  margin-left: 20px;
  margin-bottom: 14px;
}
.page-content-card li {
  color: var(--clr-text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
  margin-bottom: 6px;
}

/* Team Cards */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.team-member {
  text-align: center;
  padding: 24px 16px;
  background: var(--clr-bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
  transition: all var(--transition-base);
}
.team-member:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.team-avatar {
  width: 64px; height: 64px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--clr-accent), #a78bfa);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  margin: 0 auto 12px;
}

.team-member h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 2px;
}

.team-member .role {
  font-size: 0.78rem;
  color: var(--clr-accent);
  font-weight: 600;
}

/* ============================================
   Contact Us Page
   ============================================ */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-text-primary);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: var(--clr-bg-primary);
  color: var(--clr-text-primary);
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.btn-submit {
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-accent), #7c5cf5);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-accent);
  width: fit-content;
}
.btn-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--clr-accent-glow);
}

.form-success {
  display: none;
  padding: 16px;
  background: var(--clr-success-bg);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: var(--radius-sm);
  color: var(--clr-success);
  font-weight: 600;
  font-size: 0.9rem;
  text-align: center;
}
.form-success.visible { display: block; }

/* ============================================
   Privacy Policy Page
   ============================================ */
.policy-date {
  font-size: 0.82rem;
  color: var(--clr-text-tertiary);
  font-style: italic;
  margin-bottom: 20px;
  display: block;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--clr-footer-bg);
  color: var(--clr-footer-text);
  padding: 40px clamp(16px, 3vw, 40px) 24px;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
}

.footer-brand {
  flex: 1;
  min-width: 200px;
}

.footer-brand .logo {
  color: #f1f5f9;
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 0.82rem;
  color: var(--clr-footer-text);
  max-width: 280px;
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  gap: 48px;
}

.footer-nav-col h4 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #f1f5f9;
  margin-bottom: 14px;
}

.footer-nav-col ul {
  list-style: none;
}

.footer-nav-col li {
  margin-bottom: 8px;
}

.footer-nav-col a {
  font-size: 0.85rem;
  color: var(--clr-footer-text);
  transition: color var(--transition-fast);
}
.footer-nav-col a:hover {
  color: #fff;
}

.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  font-size: 0.78rem;
  color: rgba(148,163,184,0.7);
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
    max-width: var(--max-content-width);
  }
  .ad-sidebar {
    display: none;
  }
  .ad-placeholder-banner {
    margin-top: 20px;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .site-header {
    height: 60px;
  }
  .logo { font-size: 1.35rem; }
  .logo-icon { width: 30px; height: 30px; font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; font-size: 0.95rem; }

  .main-layout {
    padding: 20px 16px;
  }

  .dropzone-wrapper {
    padding: 32px 16px;
  }
  .dropzone-icon { font-size: 2.2rem; }

  .controls-bar {
    flex-direction: column;
    gap: 12px;
  }
  .controls-bar > * { width: 100%; }
  .format-selector { justify-content: center; }
  .quality-control { justify-content: center; }
  .btn-convert { width: 100%; justify-content: center; }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .step-card:not(:last-child)::after { display: none; }

  .footer-inner { flex-direction: column; gap: 24px; }
  .footer-nav { flex-direction: column; gap: 24px; }

  .team-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 380px) {
  .team-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Animations
   ============================================ */
@keyframes pulseGlow {
  0%, 100% { box-shadow: var(--shadow-accent); }
  50%      { box-shadow: 0 4px 32px var(--clr-accent-glow); }
}

.btn-convert:not(:disabled) {
  animation: pulseGlow 3s ease-in-out infinite;
}
.btn-convert:hover:not(:disabled) {
  animation: none;
}

/* Notification Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 24px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  color: var(--clr-text-primary);
  font-size: 0.88rem;
  font-weight: 500;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-base);
}
.toast.visible {
  transform: translateY(0);
  opacity: 1;
}
.toast.error { border-left: 4px solid var(--clr-danger); }
.toast.success { border-left: 4px solid var(--clr-success); }

/* ============================================
   Conversion Type Cards Grid
   ============================================ */
.conversions-section {
  margin-bottom: 36px;
}

.conversions-section-title {
  text-align: center;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--clr-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 18px;
}

.conversions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(205px, 1fr));
  gap: 14px;
}

.conversion-card {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.conversion-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), #a78bfa);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.conversion-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-border-accent);
}

.conversion-card:hover::before,
.conversion-card.active::before {
  transform: scaleX(1);
}

.conversion-card.active {
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-accent);
}

.conversion-card-arrows {
  font-size: 1.6rem;
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.conversion-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 6px;
}

.conversion-card p {
  font-size: 0.75rem;
  color: var(--clr-text-secondary);
  line-height: 1.45;
}

/* Highlight card for compress */
.conversion-card.compress-highlight {
  background: linear-gradient(135deg, var(--clr-accent-subtle), transparent);
  border-color: var(--clr-border-accent);
}

/* ============================================
   Mode Tabs (Convert / Compress)
   ============================================ */
.mode-tabs {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-top: 24px;
  margin-bottom: 6px;
  background: var(--clr-bg-tertiary);
  border-radius: var(--radius-full);
  padding: 4px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  border: 1px solid var(--clr-border);
}

.mode-tab {
  padding: 10px 28px;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--clr-text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.mode-tab.active {
  background: var(--clr-accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.mode-tab:hover:not(.active) {
  color: var(--clr-text-primary);
  background: var(--clr-surface);
}

/* ============================================
   Compress Mode Controls
   ============================================ */
.compress-controls {
  display: none;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.compress-controls.visible {
  display: flex;
}

.compress-controls label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
  white-space: nowrap;
}

.size-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.size-pill {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.size-pill.active {
  border-color: var(--clr-accent);
  background: var(--clr-accent-subtle);
  color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
}

.size-pill:hover:not(.active) {
  border-color: var(--clr-border-accent);
  background: var(--clr-surface-hover);
}

/* ============================================
   Progress Bar
   ============================================ */
.progress-wrapper {
  display: none;
  margin-top: 20px;
}
.progress-wrapper.visible { display: block; }

.progress-bar-track {
  width: 100%;
  height: 6px;
  background: var(--clr-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-accent), #a78bfa);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.3s ease;
}

.progress-label {
  font-size: 0.78rem;
  color: var(--clr-text-tertiary);
  text-align: center;
  margin-top: 6px;
}

/* ============================================
   Result — Compression Stats
   ============================================ */
.result-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin: 14px 0;
  flex-wrap: wrap;
}

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

.result-stat .stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--clr-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 2px;
}

.result-stat .stat-value {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--clr-text-primary);
}

.result-stat .stat-value.savings {
  color: var(--clr-success);
}

/* ============================================
   HEIC Badge (on dropzone)
   ============================================ */
.format-badges {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 8px;
  flex-wrap: wrap;
}

.format-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--clr-accent-subtle);
  color: var(--clr-accent);
  letter-spacing: 0.3px;
}

.format-badge.heic {
  background: rgba(245, 158, 11, 0.1);
  color: var(--clr-warning);
}

/* ============================================
   Responsive — New Components
   ============================================ */
@media (max-width: 640px) {
  .conversions-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .conversion-card {
    padding: 16px 12px;
  }
  .conversion-card-arrows { font-size: 1.3rem; }
  .conversion-card h3 { font-size: 0.82rem; }
  .conversion-card p { font-size: 0.7rem; }

  .mode-tabs {
    width: 100%;
    max-width: 340px;
  }
  .mode-tab { padding: 10px 20px; font-size: 0.8rem; }

  .size-pills { gap: 6px; }
  .size-pill { padding: 7px 14px; font-size: 0.8rem; }

  .result-stats { gap: 16px; }
}

@media (max-width: 380px) {
  .conversions-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Category Tabs (Image Tools / PDF Utilities)
   ============================================ */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 32px;
  background: var(--clr-bg-tertiary);
  border-radius: var(--radius-full);
  padding: 5px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-sm);
}

.category-tab {
  padding: 12px 32px;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--clr-text-secondary);
  font-size: 0.92rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  white-space: nowrap;
  letter-spacing: -0.2px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.category-tab.active {
  background: linear-gradient(135deg, var(--clr-accent), #7c5cf5);
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.category-tab:hover:not(.active) {
  color: var(--clr-text-primary);
  background: var(--clr-surface);
}

/* Category Panels */
.category-panel {
  display: none;
  animation: fadeInView 0.35s ease;
}
.category-panel.active {
  display: block;
}

/* ============================================
   PDF Tool Cards
   ============================================ */
.pdf-tools-section {
  margin-bottom: 36px;
}

.pdf-tools-section .conversions-section-title {
  text-align: center;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--clr-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 18px;
}

.pdf-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.pdf-tool-card {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.pdf-tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #ef4444, #f59e0b);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.pdf-tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(239, 68, 68, 0.3);
}

.pdf-tool-card:hover::before,
.pdf-tool-card.active::before {
  transform: scaleX(1);
}

.pdf-tool-card.active {
  border-color: #ef4444;
  box-shadow: 0 4px 24px rgba(239, 68, 68, 0.2);
}

.pdf-tool-card .pdf-tool-icon {
  font-size: 2rem;
  margin-bottom: 10px;
  display: block;
}

.pdf-tool-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 6px;
}

.pdf-tool-card p {
  font-size: 0.78rem;
  color: var(--clr-text-secondary);
  line-height: 1.5;
}

/* ============================================
   PDF Workspace (shared container)
   ============================================ */
.pdf-workspace {
  display: none;
  animation: fadeInView 0.3s ease;
}
.pdf-workspace.visible {
  display: block;
}

.pdf-workspace-title {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 6px;
}

.pdf-workspace-subtitle {
  text-align: center;
  font-size: 0.85rem;
  color: var(--clr-text-tertiary);
  margin-bottom: 20px;
}

/* ============================================
   PDF Dropzone (multi-file)
   ============================================ */
.pdf-dropzone {
  background: var(--clr-surface);
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.pdf-dropzone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.04), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.pdf-dropzone:hover,
.pdf-dropzone.drag-over {
  border-color: #ef4444;
  box-shadow: 0 4px 24px rgba(239, 68, 68, 0.15);
}
.pdf-dropzone:hover::before,
.pdf-dropzone.drag-over::before {
  opacity: 1;
}

.pdf-dropzone .dropzone-icon {
  font-size: 2.5rem;
  margin-bottom: 10px;
  display: block;
}

.pdf-dropzone .dropzone-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--clr-text-primary);
  margin-bottom: 4px;
}

.pdf-dropzone .dropzone-hint {
  font-size: 0.8rem;
  color: var(--clr-text-tertiary);
}

.pdf-dropzone .format-badges {
  margin-top: 10px;
}

.pdf-format-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(239, 68, 68, 0.08);
  color: #ef4444;
  letter-spacing: 0.3px;
}

/* ============================================
   PDF File List
   ============================================ */
.pdf-file-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pdf-file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  animation: fadeInView 0.25s ease;
}

.pdf-file-item:hover {
  border-color: var(--clr-border-accent);
  box-shadow: var(--shadow-sm);
}

.pdf-file-item .drag-handle {
  cursor: grab;
  color: var(--clr-text-tertiary);
  font-size: 1.1rem;
  flex-shrink: 0;
  user-select: none;
  padding: 2px 4px;
}
.pdf-file-item .drag-handle:active {
  cursor: grabbing;
}

.pdf-file-item .file-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.pdf-file-item .file-details {
  flex: 1;
  min-width: 0;
}

.pdf-file-item .file-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pdf-file-item .file-meta {
  font-size: 0.75rem;
  color: var(--clr-text-tertiary);
}

.pdf-file-item .remove-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--clr-danger);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.pdf-file-item .remove-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
}

.pdf-file-item.dragging {
  opacity: 0.5;
  border-color: var(--clr-accent);
  background: var(--clr-accent-subtle);
}

.pdf-file-count {
  text-align: center;
  font-size: 0.82rem;
  color: var(--clr-text-tertiary);
  margin-top: 8px;
  font-weight: 500;
}

/* ============================================
   PDF Tool Controls
   ============================================ */
.pdf-tool-controls {
  display: none;
  margin-top: 20px;
  animation: fadeInView 0.3s ease;
}
.pdf-tool-controls.visible {
  display: block;
}

/* Split Controls */
.split-controls {
  text-align: center;
}

.split-mode-pills {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.split-pill {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.split-pill.active {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
  color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.split-pill:hover:not(.active) {
  border-color: var(--clr-border-accent);
  background: var(--clr-surface-hover);
}

.page-range-input {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  margin-top: 12px;
}

.page-range-input label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
}

.page-range-input input {
  padding: 10px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: var(--clr-surface);
  color: var(--clr-text-primary);
  font-size: 0.88rem;
  width: 200px;
  transition: all var(--transition-fast);
}

.page-range-input input:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.page-info {
  text-align: center;
  font-size: 0.82rem;
  color: var(--clr-text-tertiary);
  margin-top: 8px;
  font-weight: 500;
}

.page-info strong {
  color: var(--clr-accent);
}

/* Compress Controls */
.compress-pdf-quality {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  margin-bottom: 14px;
}

.compress-pdf-quality label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
}

.compress-pdf-quality select {
  padding: 10px 36px 10px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-primary);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: all var(--transition-fast);
}

.compress-pdf-quality select:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

/* Images to PDF Controls */
.img2pdf-options {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.img2pdf-options label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
}

.img2pdf-options select {
  padding: 10px 36px 10px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-primary);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: all var(--transition-fast);
}

.img2pdf-options select:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

/* PDF Action Button */
.btn-pdf-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.25);
  margin: 16px auto 0;
  position: relative;
  overflow: hidden;
}

.btn-pdf-action::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.15));
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn-pdf-action:hover:not(:disabled)::after { opacity: 1; }

.btn-pdf-action:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(239, 68, 68, 0.35);
}
.btn-pdf-action:active:not(:disabled) { transform: translateY(0); }
.btn-pdf-action:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-pdf-action:not(:disabled) {
  animation: pdfPulseGlow 3s ease-in-out infinite;
}
.btn-pdf-action:hover:not(:disabled) {
  animation: none;
}

@keyframes pdfPulseGlow {
  0%, 100% { box-shadow: 0 4px 20px rgba(239, 68, 68, 0.25); }
  50%      { box-shadow: 0 4px 32px rgba(239, 68, 68, 0.4); }
}

.btn-pdf-action .spinner {
  display: none;
  font-size: 1.3rem;
  line-height: 1;
  margin-right: 8px;
  animation: runFast 0.4s ease-in-out infinite;
}

.btn-pdf-action .spinner::before {
  content: '🏃💨';
}
.btn-pdf-action.loading .spinner { display: inline-block; }
.btn-pdf-action.loading .btn-text { display: none; }
.btn-pdf-action.loading .btn-loading-text { display: inline; }

/* ============================================
   PDF Result Area
   ============================================ */
.pdf-result-area {
  display: none;
  margin-top: 24px;
  text-align: center;
  animation: fadeInView 0.4s ease;
}
.pdf-result-area.visible { display: block; }

.pdf-result-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}

.pdf-result-card .result-success-icon {
  font-size: 2.4rem;
  margin-bottom: 8px;
}

.pdf-result-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-text-primary);
  margin-bottom: 4px;
}

.pdf-result-card .result-meta {
  font-size: 0.82rem;
  color: var(--clr-text-tertiary);
  margin-bottom: 18px;
}
.pdf-result-card .result-meta span {
  font-weight: 600;
  color: #ef4444;
}

.pdf-result-downloads {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.btn-pdf-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-success), #16a34a);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(34, 197, 94, 0.25);
  border: none;
  cursor: pointer;
}
.btn-pdf-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(34, 197, 94, 0.35);
  color: #fff;
}

/* PDF Progress */
.pdf-progress-wrapper {
  display: none;
  margin-top: 20px;
}
.pdf-progress-wrapper.visible { display: block; }

.pdf-progress-wrapper .progress-bar-track {
  width: 100%;
  height: 6px;
  background: var(--clr-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.pdf-progress-wrapper .progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #ef4444, #f59e0b);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.3s ease;
}

.pdf-progress-wrapper .progress-label {
  font-size: 0.78rem;
  color: var(--clr-text-tertiary);
  text-align: center;
  margin-top: 6px;
}

/* PDF How-To Section */
.pdf-how-to-section {
  margin-top: 48px;
}

.pdf-how-to-section h2 {
  text-align: center;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin-bottom: 28px;
  color: var(--clr-text-primary);
}

/* ============================================
   COMPREHENSIVE RESPONSIVE LAYOUT
   ============================================ */

/* ── 1024px: Hide sidebars, single column ── */
@media (max-width: 1024px) {
  .ad-sidebar {
    display: none;
  }

  .main-layout {
    grid-template-columns: 1fr;
    padding: 24px clamp(16px, 4vw, 32px);
    gap: 0;
  }
}

/* ── 768px: Tablet ── */
@media (max-width: 768px) {
  .site-header {
    padding: 0 16px;
    gap: 8px;
  }

  .header-nav {
    gap: 2px;
  }

  .header-nav-link {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .logo {
    font-size: 1.3rem;
  }

  .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 0.95rem;
  }

  .main-layout {
    padding: 20px 16px;
  }

  .conversions-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .conversion-card {
    padding: 20px 14px;
  }

  .conversion-card h3 {
    font-size: 0.9rem;
  }

  .conversion-card p {
    font-size: 0.78rem;
  }

  .pdf-tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .pdf-tool-card {
    padding: 18px 12px;
  }
  .pdf-tool-card .pdf-tool-icon { font-size: 1.6rem; }
  .pdf-tool-card h3 { font-size: 0.85rem; }
  .pdf-tool-card p { font-size: 0.72rem; }

  .category-tabs {
    width: 100%;
    max-width: 360px;
  }
  .category-tab {
    padding: 10px 20px;
    font-size: 0.82rem;
    flex: 1;
    justify-content: center;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .step-card:not(:last-child)::after {
    display: none;
  }

  .controls-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .format-selector {
    justify-content: center;
  }

  .quality-control {
    justify-content: center;
  }

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

  .compress-controls {
    align-items: stretch;
  }

  .size-pills {
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .size-pill {
    flex: 1 1 calc(50% - 8px);
    text-align: center;
  }

  .result-stats {
    flex-direction: column;
    gap: 8px;
    align-items: center;
  }

  .footer-inner {
    flex-direction: column;
    gap: 28px;
    text-align: center;
  }

  .footer-nav {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
  }

  .footer-nav-col {
    min-width: 140px;
    text-align: left;
  }

  .trust-badge {
    flex-direction: column;
    text-align: center;
    gap: 6px;
    border-radius: var(--radius-lg);
    padding: 16px 20px;
  }

  .page-content-card {
    padding: 24px 18px;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .pdf-dropzone {
    padding: 28px 16px;
  }

  .page-range-input {
    flex-direction: column;
    gap: 6px;
  }
  .page-range-input input {
    width: 100%;
  }

  .img2pdf-options {
    flex-direction: column;
    gap: 10px;
  }

  .btn-pdf-action {
    width: 100%;
  }

  .split-mode-pills {
    gap: 6px;
  }
  .split-pill {
    padding: 7px 14px;
    font-size: 0.8rem;
  }

  .compress-pdf-quality {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
}

/* ── 480px: Small phones ── */
@media (max-width: 480px) {
  .header-nav {
    display: none;
  }

  .site-header {
    height: 60px;
  }

  :root {
    --header-height: 60px;
  }

  .logo {
    font-size: 1.2rem;
  }

  .conversions-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .conversion-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 16px 14px;
    text-align: left;
  }

  .conversion-card-arrows {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-bottom: 0;
  }

  .conversion-card h3 {
    margin-bottom: 2px;
    font-size: 0.88rem;
  }

  .conversion-card p {
    font-size: 0.76rem;
  }

  .pdf-tools-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .pdf-tool-card {
    flex-direction: row;
    text-align: left;
    padding: 14px 14px;
    gap: 12px;
    align-items: center;
  }

  .pdf-tool-card .pdf-tool-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
  }

  .pdf-tool-card p {
    display: none;
  }

  .converter-hero {
    margin-bottom: 24px;
  }

  .converter-hero h1 {
    font-size: 1.4rem;
  }

  .converter-hero p {
    font-size: 0.88rem;
  }

  .dropzone-wrapper {
    padding: 32px 16px;
  }

  .dropzone-icon {
    font-size: 2.2rem;
  }

  .mode-tab {
    flex: 1;
    text-align: center;
    font-size: 0.82rem;
    padding: 9px 10px;
  }

  .size-pill {
    flex: 1 1 100%;
  }

  .btn-download {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
  }

  .how-to-section {
    margin-top: 32px;
  }

  .ad-placeholder-banner {
    min-height: 72px;
  }

  .footer-nav {
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
  }

  .footer-nav-col {
    width: 100%;
    text-align: center;
  }

  .footer-nav-col ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    justify-content: center;
    list-style: none;
    padding: 0;
  }

  .footer-bottom p {
    font-size: 0.78rem;
  }

  .conversions-section-title {
    font-size: 0.78rem;
  }

  .btn-pdf-download {
    width: 100%;
    justify-content: center;
    padding: 13px 20px;
  }

  .result-stat {
    min-width: 80px;
  }
}