/* ==========================================================================
   YTSnapIt - Developer-Grade Modern Design System
   Engineered for clean utility, precision typography, and zero template clutter.
   ========================================================================== */

:root {
  /* Brand Palette */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-active: #1e40af;
  --primary-subtle: #eff6ff;
  --primary-border: #bfdbfe;

  /* Neutral Slate Palette */
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;

  /* Semantic Feedback */
  --success: #10b981;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  --error: #ef4444;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Elevation Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-command: 0 12px 32px -4px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);

  /* Layout Constants */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --max-content: 1100px;
  --max-article: 760px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--slate-800);
  background-color: var(--white);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -50px;
  left: 16px;
  background: var(--slate-900);
  color: var(--white);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus State */
a:focus-visible,
button:focus-visible,
input:focus-visible:not(.url-input),
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-content);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--slate-200);
  position: sticky;
  top: 0;
  z-index: 90;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  height: 32px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate-600);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-link:hover {
  color: var(--slate-900);
  background-color: var(--slate-100);
}

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

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  padding: 6px;
  cursor: pointer;
  color: var(--slate-700);
}

/* ==========================================================================
   Hero & Command Bar Form
   ========================================================================== */

.hero-section {
  padding: 56px 0 40px 0;
  background: radial-gradient(circle at 50% -10%, #f1f5f9 0%, #ffffff 65%);
  border-bottom: 1px solid var(--slate-100);
  text-align: center;
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--slate-600);
  max-width: 580px;
  margin: 0 auto 32px auto;
  line-height: 1.55;
}

/* Command Bar Form Card */
.form-card {
  max-width: 680px;
  margin: 0 auto;
}

.input-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--white);
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-lg);
  padding: 6px 8px 6px 14px;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}

.input-group:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12), var(--shadow-sm);
}

.input-icon {
  color: var(--slate-400);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.url-input {
  flex: 1;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  background: transparent;
  padding: 8px 4px;
  font-size: 0.98rem;
  color: var(--slate-900);
  min-width: 0;
}

.url-input::placeholder {
  color: var(--slate-400);
}

.input-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--slate-100);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--slate-700);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-icon:hover {
  background-color: var(--slate-200);
  color: var(--slate-900);
}

/* Form Actions */
.form-actions {
  margin-top: 16px;
  margin-bottom: 22px;
}

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

/* Helper note below button with clear breathing room */
.form-hint {
  margin-top: 20px;
  margin-bottom: 14px;
  font-size: 0.84rem;
  color: var(--slate-500);
  line-height: 1.5;
  text-align: center;
}

.sample-row {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--slate-200);
  font-size: 0.82rem;
  color: var(--slate-500);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.sample-btn {
  background: transparent;
  border: none;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

.sample-btn:hover {
  color: var(--primary-hover);
}

/* Validation Feedback */
.form-feedback {
  font-size: 0.88rem;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  margin-top: 14px;
  display: none;
  text-align: left;
}

.form-feedback:not(:empty) {
  display: block;
}

.feedback-error {
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: #991b1b;
}

.feedback-info {
  background-color: var(--primary-subtle);
  border: 1px solid var(--primary-border);
  color: #1e40af;
}

/* ==========================================================================
   Buttons System
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--primary-active);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-outline {
  background-color: var(--white);
  border-color: var(--slate-300);
  color: var(--slate-700);
}

.btn-outline:hover {
  background-color: var(--slate-50);
  border-color: var(--slate-400);
  color: var(--slate-900);
}

.btn-subtle {
  background-color: var(--slate-100);
  color: var(--slate-600);
}

.btn-subtle:hover {
  background-color: var(--slate-200);
  color: var(--slate-900);
}

.btn-sm {
  padding: 7px 12px;
  font-size: 0.84rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 12px 22px;
  font-size: 1rem;
}

/* ==========================================================================
   Thumbnail Results Section
   ========================================================================== */

.results-section {
  padding: 40px 0 60px 0;
  background-color: var(--slate-50);
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}

.results-section.is-hidden {
  display: none;
}

.results-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  background-color: var(--white);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-xs);
}

.results-title-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.results-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
}

.video-id-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--slate-100);
  color: var(--slate-700);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--slate-200);
}

/* Grid */
.thumbnails-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

/* Card */
.thumb-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  transition: all 0.15s ease;
}

.thumb-card:hover {
  border-color: var(--slate-300);
  box-shadow: var(--shadow-sm);
}

.thumb-card.is-dimmed {
  background-color: #fafbfc;
  border-color: var(--slate-200);
}

.thumb-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.thumb-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--slate-900);
}

/* Badges */
.quality-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.badge-hd {
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.badge-sd {
  background-color: #f0f9ff;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.badge-hq {
  background-color: #f5f3ff;
  color: #5b21b6;
  border: 1px solid #ddd6fe;
}

.badge-mq {
  background-color: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}

.badge-default {
  background-color: var(--slate-100);
  color: var(--slate-600);
  border: 1px solid var(--slate-200);
}

.thumb-card-dims {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--slate-600);
  background-color: var(--slate-100);
  padding: 3px 7px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.dims-unavailable {
  color: #991b1b;
  background-color: var(--error-bg);
}

.dims-unverified {
  color: #92400e;
  background-color: var(--warning-bg);
}

/* Preview Box */
.thumb-card-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--slate-100);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  border: 1px solid var(--slate-200);
}

.badge-shorts {
  background-color: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

/* Vertical 9:16 Shorts Card */
.thumbnails-grid.has-single-vertical {
  display: flex !important;
  justify-content: center !important;
}

.thumb-card.is-vertical-card {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  border: 2px solid #3b82f6;
  background: linear-gradient(180deg, #ffffff 0%, #f8faff 100%);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.08);
}

.thumb-card-preview.is-vertical-preview {
  aspect-ratio: 9 / 16 !important;
  width: 100% !important;
  max-width: 320px;
  height: auto;
  margin: 0 auto 12px auto;
  border-radius: 12px;
  background-color: #0f172a;
  border: 1px solid #bfdbfe;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.thumb-card-preview.is-vertical-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}

.thumb-card-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.preview-placeholder-msg {
  padding: 18px;
  text-align: center;
  color: var(--slate-500);
}

.preview-placeholder-msg p {
  font-size: 0.85rem;
  margin-top: 4px;
}

.thumb-card-specs {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-family: var(--font-mono);
  color: var(--slate-500);
  margin-bottom: 12px;
}

.spec-format {
  background: var(--slate-100);
  color: var(--slate-800);
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.7rem;
}

.spec-dot {
  color: var(--slate-300);
}

.spec-file {
  color: var(--slate-500);
}

.thumb-card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
}

.thumb-card-actions .btn {
  flex: 1;
}

/* Spinners */
.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

.spinner-large {
  width: 38px;
  height: 38px;
  border: 3px solid var(--slate-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 12px auto;
}

.loading-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 16px;
  color: var(--slate-600);
}

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

/* ==========================================================================
   Informational & Feature Grids
   ========================================================================== */

.section {
  padding: 48px 0;
}

.section-alt {
  background-color: var(--slate-50);
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  text-align: center;
}

.section-subtitle {
  font-size: 0.98rem;
  color: var(--slate-600);
  text-align: center;
  max-width: 580px;
  margin: 0 auto 36px auto;
}

/* Step Cards */
.grid-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.step-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-xs);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  background-color: var(--primary-subtle);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 6px;
}

.step-text {
  font-size: 0.88rem;
  color: var(--slate-600);
  line-height: 1.55;
}

/* Developer Info Grid */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.info-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 22px;
}

.info-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 8px;
}

.info-card p {
  font-size: 0.88rem;
  color: var(--slate-600);
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   Two-Column Developer Contact Layout
   ========================================================================== */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 36px;
  margin-top: 32px;
  margin-bottom: 80px;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 20px;
}

.contact-card h3 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 6px;
}

.contact-card p {
  font-size: 0.88rem;
  color: var(--slate-600);
  line-height: 1.55;
}

.email-copy-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-top: 12px;
}

.email-copy-box code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 600;
}

/* Form Panel */
.contact-form-panel {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.contact-form-panel h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--slate-900);
  background-color: var(--slate-50);
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  transition: all 0.15s ease;
  outline: none;
}

.form-control:focus {
  background-color: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

/* ==========================================================================
   Content Articles (FAQ, How It Works, Terms, Privacy)
   ========================================================================== */

.page-header {
  padding: 40px 0 24px 0;
  border-bottom: 1px solid var(--slate-200);
  margin-bottom: 32px;
}

.page-title {
  font-size: clamp(1.8rem, 3.5vw, 2.3rem);
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}

.page-desc {
  font-size: 1rem;
  color: var(--slate-600);
  max-width: 680px;
}

main.container {
  padding-bottom: 72px;
}

.content-article {
  max-width: var(--max-article);
  margin: 0 auto;
  padding-bottom: 80px;
}

.content-article h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-top: 32px;
  margin-bottom: 12px;
}

.content-article p,
.content-article ul,
.content-article ol {
  font-size: 0.95rem;
  color: var(--slate-600);
  margin-bottom: 16px;
  line-height: 1.65;
}

.content-article ul,
.content-article ol {
  padding-left: 20px;
}

.content-article li {
  margin-bottom: 6px;
}

.content-article code {
  font-family: var(--font-mono);
  background-color: var(--slate-100);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  color: var(--slate-800);
}

/* FAQ List */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 820px;
  margin: 0 auto 80px auto;
}

.faq-item {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-xs);
}

.faq-question {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 6px;
}

.faq-answer {
  font-size: 0.92rem;
  color: var(--slate-600);
  line-height: 1.6;
}

/* Adsterra Separated Containers */
.ad-section {
  padding: 20px 0;
  text-align: center;
}

.ad-container {
  max-width: 728px;
  margin: 0 auto;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-placeholder-box {
  width: 100%;
  padding: 14px 10px;
  background-color: var(--slate-50);
  border: 1px dashed var(--slate-200);
  border-radius: var(--radius-md);
  text-align: center;
}

.ad-placeholder-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--slate-400);
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.ad-placeholder-text {
  font-size: 0.8rem;
  color: var(--slate-500);
}

/* ==========================================================================
   Notice Modal
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-backdrop.is-active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  transform: translateY(10px);
  transition: transform 0.2s ease;
}

.modal-backdrop.is-active .modal-card {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.4rem;
  color: var(--slate-400);
  cursor: pointer;
  padding: 2px;
  line-height: 1;
  border-radius: var(--radius-sm);
}

.modal-close-btn:hover {
  color: var(--slate-900);
}

.modal-body {
  font-size: 0.92rem;
  color: var(--slate-600);
  line-height: 1.6;
}

.modal-instructions {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin: 14px 0;
}

.modal-instructions ul {
  padding-left: 18px;
  margin-top: 4px;
}

.modal-legal {
  font-size: 0.78rem;
  color: var(--slate-400);
  margin-top: 10px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  margin-top: auto;
  background-color: var(--slate-900);
  color: var(--slate-400);
  padding: 48px 0 28px 0;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}

.footer-brand p {
  margin-top: 10px;
  max-width: 360px;
  line-height: 1.55;
  color: var(--slate-400);
  font-size: 0.88rem;
}

.footer-heading {
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--white);
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  color: var(--slate-400);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.82rem;
}

.footer-disclaimer {
  max-width: 600px;
  font-size: 0.78rem;
  color: var(--slate-500);
}

/* ==========================================================================
   Educational Spec Table & Quality Badges
   ========================================================================== */

.spec-table-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  margin-top: 24px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.spec-table th {
  background-color: var(--slate-50);
  padding: 12px 18px;
  font-weight: 600;
  color: var(--slate-700);
  border-bottom: 1px solid var(--slate-200);
  white-space: nowrap;
}

.spec-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--slate-100);
  color: var(--slate-600);
  vertical-align: middle;
}

.spec-table tbody tr:last-child td {
  border-bottom: none;
}

.spec-table tbody tr:hover {
  background-color: #fafbfc;
}

.spec-table code {
  background-color: var(--slate-100);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--slate-800);
}

.spec-table strong {
  color: var(--slate-900);
}

.badge-shorts {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #fdf2f8;
  color: #db2777;
  border: 1px solid #fbcfe8;
}

.badge-hd {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #ecfdf5;
  color: #059669;
  border: 1px solid #a7f3d0;
}

.badge-sd, .badge-hq, .badge-mq, .badge-default {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--slate-100);
  color: var(--slate-700);
  border: 1px solid var(--slate-200);
}

/* ==========================================================================
   Cookie Consent Banner (AdSense / GDPR / ePrivacy Compliance)
   ========================================================================== */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background-color: var(--slate-900);
  color: var(--slate-200);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.25);
  font-size: 0.875rem;
  line-height: 1.5;
}

.cookie-banner a {
  color: #60a5fa;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cookie-banner a:hover {
  color: #93c5fd;
}

.cookie-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn-cookie-decline {
  background-color: transparent !important;
  color: #f1f5f9 !important;
  border: 1px solid #64748b !important;
  font-weight: 500;
}

.btn-cookie-decline:hover {
  background-color: #334155 !important;
  color: #ffffff !important;
  border-color: #94a3b8 !important;
}

@media (max-width: 640px) {
  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
    gap: 14px;
  }
  
  .cookie-actions {
    width: 100%;
    justify-content: flex-end;
  }
}

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

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background-color: var(--white);
    border-bottom: 1px solid var(--slate-200);
    box-shadow: var(--shadow-md);
    padding: 14px 20px;
  }

  .site-nav.is-open {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    padding: 8px 12px;
  }

  .input-group {
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
  }

  .input-controls {
    justify-content: flex-end;
    margin-top: 6px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}