/* =========================================================
   MAIN STYLESHEET - VideoDownloader Pro
   Modern SaaS, Glassmorphism, Micro-animations, 60fps
   ========================================================= */


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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-base), color var(--transition-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Background ambient mesh */
.bg-ambient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background: 
    radial-gradient(circle at 15% 15%, rgba(79, 70, 229, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 25%, rgba(236, 72, 153, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 50% 85%, rgba(6, 182, 212, 0.06) 0%, transparent 40%);
}

[data-theme="dark"] .bg-ambient {
  background: 
    radial-gradient(circle at 20% 10%, rgba(79, 70, 229, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
}

/* Typography & Utilities */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Glass panel */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-card-border);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-xl);
}

/* =========================================================
   HEADER & NAVBAR
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
}

[data-theme="dark"] .site-header {
  background: rgba(11, 15, 25, 0.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-main);
}

.site-logo img {
  height: 2.25rem;
  width: auto;
}

.logo-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--primary), var(--accent-pink));
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-pill);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.theme-icon-dark, .theme-icon-light {
  display: none;
}

[data-theme="dark"] .theme-icon-light {
  display: block;
}

[data-theme="light"] .theme-icon-dark {
  display: block;
}

/* Telegram CTA Button */
.btn-telegram {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, #229ED9, #0088cc);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(34, 158, 217, 0.3);
  transition: all var(--transition-fast);
}

.btn-telegram:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(34, 158, 217, 0.45);
}

/* Hamburger button */
.hamburger-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--text-main);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.hamburger-line {
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 4.5rem;
  left: 0;
  width: 100%;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.5rem;
  box-shadow: var(--shadow-xl);
  z-index: 99;
  flex-direction: column;
  gap: 1rem;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-nav-drawer.open {
  transform: translateY(0);
  opacity: 1;
}

/* =========================================================
   HERO SECTION
   ========================================================= */

.hero-section {
  padding: 4.5rem 0 3.5rem;
  text-align: center;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--primary-light);
  border: 1px solid rgba(79, 70, 229, 0.2);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  animation: pulseGlow 3s infinite alternate;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-pink) 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.platform-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-pill);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.platform-pill.tiktok { border-color: rgba(254, 44, 85, 0.3); color: var(--color-tiktok); }
.platform-pill.facebook { border-color: rgba(24, 119, 242, 0.3); color: var(--color-facebook); }
.platform-pill.youtube { border-color: rgba(255, 0, 0, 0.3); color: var(--color-youtube); }

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0.5rem auto 2.5rem;
}

/* =========================================================
   DOWNLOAD INPUT BAR (HERO)
   ========================================================= */

.downloader-form-card {
  max-width: 820px;
  margin: 0 auto;
  padding: 0.75rem;
  position: relative;
}

.downloader-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 2px solid var(--bg-input-border);
  border-radius: var(--radius-lg);
  padding: 0.4rem 0.5rem 0.4rem 1rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.downloader-input-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light), var(--shadow-lg);
}

.input-platform-icon {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.input-url {
  flex: 1;
  background: transparent;
  color: var(--text-main);
  font-size: 1.05rem;
  padding: 0.75rem 0.5rem;
  min-width: 0;
}

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

.input-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-right: 0.5rem;
}

.btn-input-action {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-input-action:hover {
  background: var(--border-hover);
  color: var(--text-main);
}

.btn-input-clear {
  display: none;
}

.btn-submit-download {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: #ffffff;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--primary-glow);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-submit-download:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-submit-download:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.downloader-hints {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.downloader-hints span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* =========================================================
   LOADING SKELETON ANIMATION
   ========================================================= */

.loading-container {
  display: none;
  max-width: 820px;
  margin: 2rem auto 0;
  padding: 2.5rem 1.5rem;
  text-align: center;
}

.loading-spinner {
  width: 3.5rem;
  height: 3.5rem;
  border: 4px solid var(--border-subtle);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 1.25rem;
  animation: spin 0.8s linear infinite;
}

.loading-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.loading-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Skeleton preview */
.skeleton-card {
  margin-top: 1.5rem;
  display: flex;
  gap: 1.5rem;
  padding: 1.25rem;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.skeleton-thumb {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, var(--border-subtle) 25%, var(--border-hover) 50%, var(--border-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  flex-shrink: 0;
}

.skeleton-lines {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: center;
}

.skeleton-line {
  height: 18px;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, var(--border-subtle) 25%, var(--border-hover) 50%, var(--border-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.skeleton-line.short { width: 40%; }
.skeleton-line.medium { width: 70%; }

/* =========================================================
   RESULT CARD
   ========================================================= */

.result-container {
  display: none;
  max-width: 860px;
  margin: 2.5rem auto 0;
  animation: fadeUp 0.4s ease-out forwards;
}

.result-card-inner {
  padding: 1.75rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
}

.result-media-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.result-thumb-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow-md);
}

.result-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.result-duration-badge {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

.result-share-group {
  display: flex;
  gap: 0.5rem;
}

.btn-share-action {
  flex: 1;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 0.55rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-share-action:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.result-info-col {
  display: flex;
  flex-direction: column;
}

.result-platform-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.result-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.5rem;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.result-author {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.result-formats-heading {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.result-formats-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.format-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.format-item:hover {
  border-color: var(--primary);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.format-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.format-quality-badge {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
}

.format-quality-badge.hd {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.15), rgba(79, 70, 229, 0.15));
  color: var(--accent-pink);
  border: 1px solid rgba(236, 72, 153, 0.3);
}

.format-details {
  display: flex;
  flex-direction: column;
}

.format-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

.format-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-download-format {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.15rem;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-download-format:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* =========================================================
   ADVERTISEMENTS
   ========================================================= */

.ad-slot {
  width: 100%;
  margin: 1.5rem auto;
  text-align: center;
  overflow: hidden;
  max-width: 860px;
}

.ad-slot img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.ad-label {
  display: block;
  font-size: 0.68rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}

/* =========================================================
   FEATURES & CONTENT SECTIONS
   ========================================================= */

.section {
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 3rem;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  padding: 2rem;
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.feature-icon-wrapper {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-lg);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  color: var(--text-main);
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Steps Guide Tabs */
.guide-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.guide-tab-btn {
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius-pill);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.guide-tab-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.step-card {
  padding: 1.75rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  position: relative;
}

.step-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.35;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* FAQ Accordion */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  width: 1.25rem;
  height: 1.25rem;
  transition: transform var(--transition-base);
  color: var(--text-muted);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
  padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 1.25rem;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
  margin-top: auto;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  max-width: 320px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* =========================================================
   TOAST NOTIFICATIONS
   ========================================================= */

.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-xl);
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 500;
  transform: translateY(20px);
  opacity: 0;
  animation: slideInToast 0.3s forwards cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 380px;
}

.toast.success { border-left: 4px solid var(--accent-emerald); }
.toast.error { border-left: 4px solid #ef4444; }
.toast.info { border-left: 4px solid var(--primary); }

/* =========================================================
   ANIMATIONS & KEYFRAMES
   ========================================================= */

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

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

@keyframes pulseGlow {
  0% { box-shadow: 0 0 10px rgba(79, 70, 229, 0.2); }
  100% { box-shadow: 0 0 25px rgba(79, 70, 229, 0.45); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInToast {
  to { opacity: 1; transform: translateY(0); }
}

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

/* =========================================================
   RESPONSIVE BREAKPOINTS
   320px, 375px, 768px, 1024px, 1440px
   ========================================================= */

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .nav-desktop, .btn-telegram { display: none; }
  .hamburger-btn { display: flex; }
  .mobile-nav-drawer { display: flex; }

  .hero-title { font-size: 2.15rem; }
  .hero-subtitle { font-size: 1.05rem; }

  .downloader-input-wrapper {
    flex-wrap: wrap;
    padding: 0.5rem;
    gap: 0.5rem;
  }

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

  .result-card-inner {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .result-thumb-wrapper {
    max-width: 320px;
    margin: 0 auto;
  }

  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  .hero-title { font-size: 1.85rem; }
  .input-actions { display: none; }
}


/* =========================================================
   PERFORMANCE MODE - smooth rendering on mobile/shared hosting
   ========================================================= */
.section,
.site-footer {
  content-visibility: auto;
  contain-intrinsic-size: 1px 700px;
}

@media (max-width: 768px) {
  /* Large live blur layers are expensive on integrated/mobile GPUs. */
  .glass-panel {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: var(--bg-surface);
  }

  .site-header {
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
  }

  .hero-badge-wrap {
    animation: none;
    box-shadow: none;
  }

  .bg-ambient {
    position: absolute;
    height: 70vh;
  }
}


/* Download request status - visible even when toast notifications are blocked */
.download-inline-message {
  display: none;
  margin: 12px 0 0;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  font-size: .92rem;
  line-height: 1.45;
  text-align: left;
}
.download-inline-message.error {
  display: block;
  color: #fecaca;
  background: rgba(239, 68, 68, .12);
  border: 1px solid rgba(239, 68, 68, .35);
}
.download-inline-message.success {
  display: block;
  color: #bbf7d0;
  background: rgba(34, 197, 94, .10);
  border: 1px solid rgba(34, 197, 94, .30);
}

/* v2.6 responsive brand + partner footer */
.site-logo img{width:auto;height:42px;max-width:min(220px,42vw);object-fit:contain;transition:height .2s ease,max-width .2s ease}
.footer-brand .site-logo img{height:46px;max-width:230px}
.footer-grid{grid-template-columns:minmax(220px,1.35fr) repeat(4,minmax(135px,.8fr));gap:2rem}
.partner-footer-links a{display:flex!important;align-items:center;gap:.55rem}
.partner-footer-links img{width:22px;height:22px;object-fit:contain;border-radius:6px;flex:0 0 22px}
.footer-empty-link{color:var(--text-muted);font-size:.9rem}
@media(max-width:1100px){.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-brand{grid-column:1/-1}.site-logo img{height:38px;max-width:190px}}
@media(max-width:700px){.footer-grid{grid-template-columns:1fr 1fr;gap:1.6rem 1rem}.footer-brand{grid-column:1/-1}.site-logo img{height:34px;max-width:160px}.footer-brand .site-logo img{height:40px;max-width:190px}}
@media(max-width:430px){.footer-grid{grid-template-columns:1fr}.site-logo img{height:31px;max-width:145px}.logo-badge{font-size:.58rem}}

/* =========================================================
   v2.8 PUBLIC LIGHT UI + MOBILE NAV + CONTACT + ADS
   ========================================================= */

body.mobile-menu-open {
  overflow: hidden;
}

/* Keep the public experience visually light by default. Dark mode remains optional. */
html[data-theme="light"] body {
  background: #f7f9fc;
}

/* Mobile navigation is a compact floating sheet instead of a full-width broken bar. */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 4.5rem 0 0;
  z-index: 97;
  border: 0;
  background: rgba(15, 23, 42, .28);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}

.mobile-nav-head {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding-bottom: .7rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-weight: 800;
  font-size: .9rem;
}

.mobile-nav-close {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-muted);
  font-size: 1.45rem;
  cursor: pointer;
}

.mobile-telegram-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 14px;
  margin-top: .2rem;
  background: linear-gradient(135deg,#239ed9,#087db7);
  color: #fff;
  font-weight: 750;
  box-shadow: 0 8px 20px rgba(34,158,217,.18);
}

.hamburger-btn {
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  flex: 0 0 42px;
}

.hamburger-btn.open .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger-btn.open .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger-btn.open .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Contact page */
.contact-page {
  padding-top: 3.25rem;
  padding-bottom: 5rem;
}
.contact-container { max-width: 980px; }
.contact-shell {
  overflow: hidden;
  border-radius: 30px;
  border: 1px solid rgba(148,163,184,.22);
  background: rgba(255,255,255,.94);
  box-shadow: 0 24px 70px rgba(15,23,42,.09);
}
.contact-hero {
  position: relative;
  text-align: center;
  padding: 3.4rem 2rem 2.4rem;
  background:
    radial-gradient(circle at 12% 10%, rgba(79,70,229,.10), transparent 34%),
    radial-gradient(circle at 88% 18%, rgba(6,182,212,.10), transparent 32%),
    linear-gradient(180deg,#fff,#fbfdff);
}
.contact-hero::after {
  content: '';
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg,transparent,rgba(148,163,184,.35),transparent);
}
.contact-eyebrow {
  display: inline-flex;
  align-items: center;
  padding: .42rem .8rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.contact-hero h1 {
  margin: 0;
  color: #0f172a;
  font-size: clamp(2rem,4.5vw,3rem);
  line-height: 1.1;
  letter-spacing: -.04em;
  font-weight: 850;
}
.contact-hero p {
  max-width: 650px;
  margin: 1rem auto 0;
  color: #64748b;
  font-size: 1rem;
  line-height: 1.75;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 1rem;
  padding: 2rem;
}
.contact-card {
  min-width: 0;
  min-height: 92px;
  display: grid;
  grid-template-columns: 50px minmax(0,1fr) 28px;
  align-items: center;
  gap: .9rem;
  padding: 1rem 1.05rem;
  border-radius: 18px;
  border: 1px solid #e7edf5;
  background: #fff;
  color: #0f172a;
  box-shadow: 0 8px 25px rgba(15,23,42,.045);
  transition: transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.contact-card:hover {
  transform: translateY(-2px);
  border-color: rgba(79,70,229,.25);
  box-shadow: 0 16px 34px rgba(15,23,42,.09);
}
.contact-icon {
  width: 50px;
  height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 15px;
  color: #fff;
  flex: 0 0 50px;
}
.contact-icon svg { width: 24px; height: 24px; }
.contact-letter { font-size: 1.35rem; font-weight: 900; }
.contact-card.telegram .contact-icon,.contact-card.channel .contact-icon { background: linear-gradient(135deg,#28a8ea,#1687c5); }
.contact-card.zalo .contact-icon { background: linear-gradient(135deg,#1688ff,#0d5ed7); }
.contact-card.facebook .contact-icon { background: linear-gradient(135deg,#1877f2,#0f5bc4); }
.contact-card.email .contact-icon { background: linear-gradient(135deg,#6366f1,#8b5cf6); }
.contact-card-copy { min-width: 0; display: flex; flex-direction: column; gap: .18rem; }
.contact-card-copy strong {
  overflow-wrap: anywhere;
  color: #172033;
  font-size: .98rem;
  line-height: 1.3;
}
.contact-card-copy small {
  overflow-wrap: anywhere;
  color: #7b8aa2;
  font-size: .79rem;
  line-height: 1.4;
}
.contact-arrow {
  color: #9aa9bd;
  font-size: 1.05rem;
  justify-self: end;
}
.contact-note {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  margin: 0 2rem 2rem;
  padding: 1rem 1.1rem;
  border-radius: 15px;
  background: #f8fafc;
  color: #64748b;
  font-size: .86rem;
  line-height: 1.55;
}
.contact-note-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-top: .34rem;
  flex: 0 0 9px;
  background: #10b981;
  box-shadow: 0 0 0 5px rgba(16,185,129,.10);
}

/* Advertising: responsive and safe for banners/embed snippets. */
.global-ad-zone { width: 100%; }
.ad-slot-premium {
  position: relative;
  width: 100%;
  max-width: 920px;
  min-height: 0;
  margin: 1.15rem auto;
  padding: .45rem;
  border-radius: 16px;
  background: rgba(255,255,255,.76);
  border: 1px solid rgba(148,163,184,.16);
}
.ad-slot-premium .ad-label {
  margin: 0 0 .35rem .15rem;
}
.ad-banner-link { display: block; line-height: 0; }
.ad-slot-premium img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 240px;
  margin: 0 auto;
  object-fit: contain;
  border-radius: 12px;
}
.ad-embed-wrap {
  max-width: 100%;
  overflow: hidden;
}
.ad-embed-wrap iframe,
.ad-embed-wrap ins,
.ad-embed-wrap > * { max-width: 100% !important; }
.desktop-ad-rail {
  position: fixed;
  right: 14px;
  top: 50%;
  z-index: 40;
  width: min(210px,15vw);
  transform: translateY(-50%);
}
.desktop-ad-rail .ad-slot { margin: 0; padding: .35rem; }
.desktop-ad-rail .ad-slot img { max-height: 520px; }
.ad-popup-layer {
  position: fixed;
  inset: 0;
  z-index: 160;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(15,23,42,.35);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease,visibility .2s ease;
}
.ad-popup-layer.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.ad-popup-card {
  position: relative;
  width: min(760px,calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  overflow: auto;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 30px 80px rgba(15,23,42,.28);
}
.ad-popup-card .ad-slot { margin: 0; max-width: none; border: 0; padding: 1rem; }
.ad-popup-close {
  position: absolute;
  top: 9px;
  right: 9px;
  z-index: 3;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(15,23,42,.9);
  color: #fff;
  cursor: pointer;
  font-size: 1.2rem;
}

@media (max-width: 1180px) {
  .desktop-ad-rail { display: none; }
}

@media (max-width: 768px) {
  .site-header { background: rgba(255,255,255,.96); }
  .header-inner { height: 4.15rem; gap: .65rem; }
  .site-logo { min-width: 0; gap: .45rem; }
  .site-logo img { height: 31px; max-width: min(150px,44vw); }
  .logo-badge { display: none; }
  .header-actions { gap: .55rem; margin-left: auto; }
  .theme-toggle-btn { width: 40px; height: 40px; border-radius: 12px; }
  .hamburger-btn { display: flex; width: 42px; height: 42px; }
  .hamburger-line { width: 21px; height: 2px; }

  .mobile-nav-drawer {
    display: flex;
    top: calc(4.15rem + 8px);
    left: 12px;
    right: 12px;
    width: auto;
    max-height: calc(100dvh - 5.2rem);
    overflow-y: auto;
    padding: .8rem;
    gap: .25rem;
    border: 1px solid rgba(148,163,184,.22);
    border-radius: 18px;
    background: rgba(255,255,255,.985);
    box-shadow: 0 24px 60px rgba(15,23,42,.16);
    transform: translateY(-10px) scale(.985);
    transform-origin: top center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform .18s ease,opacity .18s ease,visibility .18s ease;
    z-index: 99;
  }
  .mobile-nav-drawer.open {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .mobile-nav-head { display: flex; }
  .mobile-nav-drawer .nav-link {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: .7rem .85rem;
    border-radius: 12px;
    color: #334155;
    font-weight: 650;
  }
  .mobile-nav-drawer .nav-link::after { display: none; }
  .mobile-nav-drawer .nav-link:hover,
  .mobile-nav-drawer .nav-link.active {
    background: rgba(79,70,229,.08);
    color: var(--primary);
  }
  .mobile-nav-overlay { display: block; top: 4.15rem; }
  .mobile-nav-overlay.open {
    opacity: 1;
    pointer-events: auto;
  }

  .hero-section { padding: 2.65rem 0 2.6rem; }
  .hero-title { font-size: clamp(1.85rem,8.8vw,2.35rem); }
  .hero-desc { margin-bottom: 1.5rem; padding: 0 .25rem; }
  .hero-subtitle { flex-wrap: wrap; row-gap: .45rem; }
  .hero-subtitle > span:not(.platform-pill) { display: none; }
  .downloader-form-card { padding: .6rem; border-radius: 18px; }
  .downloader-input-wrapper { padding: .5rem; border-width: 1px; }
  .input-platform-icon { display: none; }
  .input-url { min-width: 0; width: 100%; padding: .7rem .45rem; font-size: .92rem; }
  .btn-submit-download { min-height: 47px; border-radius: 12px; }
  .downloader-hints { gap: .55rem; justify-content: center; }
  .downloader-hints span { font-size: .72rem; }
  .section { padding: 3.2rem 0; }
  .section-title { font-size: clamp(1.65rem,7vw,2rem); }
  .feature-card,.step-card { padding: 1.35rem; border-radius: 18px; }

  .contact-page { padding: 1.7rem 0 3.25rem; }
  .contact-container { padding: 0 1rem; }
  .contact-shell { border-radius: 22px; }
  .contact-hero { padding: 2.2rem 1.15rem 1.7rem; }
  .contact-hero h1 { font-size: 2rem; }
  .contact-hero p { font-size: .92rem; line-height: 1.65; }
  .contact-grid { grid-template-columns: 1fr; gap: .75rem; padding: 1rem; }
  .contact-card { min-height: 82px; grid-template-columns: 44px minmax(0,1fr) 24px; padding: .85rem; border-radius: 15px; }
  .contact-icon { width: 44px; height: 44px; border-radius: 13px; }
  .contact-icon svg { width: 21px; height: 21px; }
  .contact-card-copy strong { font-size: .92rem; }
  .contact-card-copy small { font-size: .75rem; }
  .contact-note { margin: 0 1rem 1rem; padding: .85rem; font-size: .8rem; }

  .ad-slot-premium { margin: .9rem auto; border-radius: 13px; padding: .3rem; }
  .ad-slot-premium img { max-height: 190px; border-radius: 10px; }
  .ad-label { font-size: .61rem; }
}

@media (max-width: 420px) {
  .container { padding-left: .85rem; padding-right: .85rem; }
  .site-logo img { max-width: 132px; height: 29px; }
  .theme-toggle-btn { display: none; }
  .contact-container { padding: 0 .75rem; }
  .contact-hero { padding-left: .9rem; padding-right: .9rem; }
  .contact-card { gap: .7rem; }
  .contact-card-copy small { display: none; }
  .footer-grid { gap: 1.3rem; }
}

/* =========================================================
   v3.0 — Vertical Ads / Mobile Theme / PWA premium layer
   ========================================================= */
.ad-media-video{display:block;width:100%;max-width:100%;max-height:280px;margin:0 auto;object-fit:contain;border-radius:12px;background:#020617}
.desktop-ad-rail{width:clamp(150px,15vw,260px);right:auto;top:50%;transform:translateY(-50%);z-index:34}
.desktop-ad-rail-left{left:clamp(10px,1.2vw,24px)}
.desktop-ad-rail-right{right:clamp(10px,1.2vw,24px);left:auto}
.desktop-ad-rail .ad-slot-premium{max-width:none;margin:0;padding:.38rem;background:rgba(255,255,255,.9);box-shadow:0 18px 55px rgba(15,23,42,.10)}
.desktop-ad-rail .ad-slot-premium img,.desktop-ad-rail .ad-media-video{width:100%;height:auto;max-height:min(68vh,650px);object-fit:contain}
.mobile-side-ads{display:none}
.mobile-nav-tools{display:grid;grid-template-columns:1fr 1fr;gap:.55rem;margin:.45rem 0 .15rem}
.mobile-theme-toggle,.mobile-pwa-install{min-height:44px;border:1px solid rgba(79,70,229,.13);border-radius:12px;background:rgba(79,70,229,.055);color:#334155;font:inherit;font-size:.82rem;font-weight:750;display:flex;align-items:center;justify-content:center;gap:.35rem;cursor:pointer}
.mobile-pwa-install{background:linear-gradient(135deg,rgba(14,165,233,.10),rgba(79,70,229,.08))}
.pwa-boot-splash{position:fixed;inset:0;z-index:9999;display:none;place-items:center;background:linear-gradient(145deg,#fff,#f4f7ff);transition:opacity .22s ease,visibility .22s ease}
.pwa-standalone-loading .pwa-boot-splash{display:grid}
.pwa-boot-splash.hide{opacity:0;visibility:hidden;pointer-events:none}
.pwa-splash-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.65rem;padding:1.5rem}
.pwa-splash-card img{width:min(180px,45vw);height:min(180px,45vw);object-fit:contain;border-radius:28px;filter:drop-shadow(0 18px 34px rgba(79,70,229,.18))}
.pwa-splash-card strong{font-size:1.15rem;color:#0f172a}.pwa-splash-card span{font-size:.82rem;color:#64748b}
[data-theme="dark"] .mobile-nav-drawer{background:rgba(8,15,29,.985);border-color:rgba(148,163,184,.16)}
[data-theme="dark"] .mobile-nav-drawer .nav-link,[data-theme="dark"] .mobile-theme-toggle,[data-theme="dark"] .mobile-pwa-install{color:#e2e8f0}
[data-theme="dark"] .mobile-theme-toggle,[data-theme="dark"] .mobile-pwa-install{background:rgba(96,165,250,.08);border-color:rgba(96,165,250,.14)}

@media (max-width:1380px){.desktop-ad-rail{width:clamp(135px,13vw,190px)}}
@media (max-width:1180px){
  .desktop-ad-rail{display:none!important}
  .mobile-side-ads{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-top:.75rem;margin-bottom:.75rem}
  .mobile-side-ads .ad-slot-premium{margin:0;max-width:none;height:100%}
  .mobile-side-ads .ad-slot-premium img,.mobile-side-ads .ad-media-video{width:100%;height:100%;max-height:220px;object-fit:contain}
}
@media (max-width:768px){
  .theme-toggle-btn{display:flex!important}
  .mobile-side-ads{grid-template-columns:1fr;gap:.65rem;padding-left:1rem;padding-right:1rem}
  .mobile-side-ads .ad-slot-premium img,.mobile-side-ads .ad-media-video{max-height:260px}
  .ad-slot-premium img,.ad-slot-premium .ad-media-video{width:100%;height:auto;max-height:260px;object-fit:contain}
}
@media (max-width:420px){
  .theme-toggle-btn{display:flex!important;width:38px;height:38px}
  .header-actions{gap:.38rem}
  .hamburger-btn{width:40px;height:40px}
  .mobile-nav-tools{grid-template-columns:1fr}
  .mobile-side-ads{padding-left:.75rem;padding-right:.75rem}
  .ad-slot-premium img,.ad-slot-premium .ad-media-video{max-height:230px}
}

/* Premium Light error pages */
.premium-error-page{min-height:70vh;display:grid;place-items:center;padding:4rem 0;background:radial-gradient(circle at 20% 15%,rgba(99,102,241,.08),transparent 32%),radial-gradient(circle at 85% 70%,rgba(14,165,233,.08),transparent 28%)}
.premium-error-container{max-width:780px}.premium-error-card{position:relative;overflow:hidden;text-align:center;padding:3.2rem 2rem;border-radius:30px;background:rgba(255,255,255,.88);border:1px solid rgba(148,163,184,.18);box-shadow:0 28px 80px rgba(15,23,42,.12);backdrop-filter:blur(10px)}.premium-error-card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(79,70,229,.04),transparent 40%,rgba(6,182,212,.05));pointer-events:none}.error-orbit{position:relative;width:140px;height:140px;border-radius:50%;display:grid;place-items:center;margin:0 auto 1.2rem;background:linear-gradient(145deg,#eef2ff,#fff);border:1px solid rgba(99,102,241,.16);box-shadow:0 18px 50px rgba(99,102,241,.16)}.error-orbit:before,.error-orbit:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(99,102,241,.12);inset:-14px}.error-orbit:after{inset:-28px;border-style:dashed}.error-orbit span{font-size:2.5rem;font-weight:950;letter-spacing:-.05em;color:#4f46e5}.error-orbit.danger{background:linear-gradient(145deg,#fff1f2,#fff);border-color:rgba(239,68,68,.16);box-shadow:0 18px 50px rgba(239,68,68,.12)}.error-orbit.danger span{color:#ef4444}.error-eyebrow{display:block;color:#6366f1;font-size:.69rem;font-weight:900;letter-spacing:.16em;margin-bottom:.6rem}.premium-error-card h1{font-size:clamp(1.7rem,4vw,2.35rem);color:#0f172a;margin:0 0 .8rem}.premium-error-card p{max-width:580px;margin:0 auto 1.6rem;color:#64748b;line-height:1.75}.premium-error-actions{display:flex;justify-content:center;gap:.75rem;flex-wrap:wrap}.error-home-btn{width:auto;min-width:190px}.error-report-btn{border:1px solid rgba(99,102,241,.16);background:#fff;color:#475569;border-radius:13px;padding:.8rem 1rem;font-weight:750;cursor:pointer;transition:.18s ease}.error-report-btn:hover{transform:translateY(-1px);border-color:rgba(99,102,241,.36);color:#4f46e5}.error-report-result{min-height:1.2rem;margin-top:1rem;color:#16a34a;font-size:.84rem;font-weight:650}[data-theme="dark"] .premium-error-card{background:rgba(7,20,38,.92);border-color:rgba(148,163,184,.12)}[data-theme="dark"] .premium-error-card h1{color:#f8fafc}[data-theme="dark"] .error-report-btn{background:#0f1d31;color:#cbd5e1;border-color:rgba(148,163,184,.14)}@media(max-width:600px){.premium-error-page{padding:2rem 0}.premium-error-card{padding:2.3rem 1rem;border-radius:22px}.error-orbit{width:112px;height:112px}.premium-error-actions{flex-direction:column}.error-home-btn,.error-report-btn{width:100%}}

/* Keep vertical rails inside the empty margins around the 1200px content shell. */
@media (min-width:1501px){
  .desktop-ad-rail{display:block!important;width:min(240px,calc((100vw - 1220px)/2 - 18px))}
  .mobile-side-ads{display:none!important}
}
@media (max-width:1500px){
  .desktop-ad-rail{display:none!important}
  .mobile-side-ads{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-top:.75rem;margin-bottom:.75rem}
}
@media (max-width:768px){.mobile-side-ads{grid-template-columns:1fr}}

/* =========================================================
   v3.1 — Frame-free Ads + Mobile Theme visibility
   ========================================================= */
/* Ads should render as the creative itself: no grey/white wrapper, border or label. */
.global-ad-zone,
.mobile-side-ads,
.desktop-ad-rail {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
}
.ad-slot,
.ad-slot-premium,
.desktop-ad-rail .ad-slot,
.desktop-ad-rail .ad-slot-premium,
.mobile-side-ads .ad-slot-premium {
  min-height: 0 !important;
  padding: 0 !important;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  overflow: visible;
}
.ad-label { display: none !important; }
.ad-banner-link { display: block; width: 100%; line-height: 0; background: transparent !important; }
.ad-slot-premium img,
.ad-slot-premium .ad-media-video,
.desktop-ad-rail .ad-slot-premium img,
.desktop-ad-rail .ad-media-video,
.mobile-side-ads .ad-slot-premium img,
.mobile-side-ads .ad-media-video {
  display: block;
  max-width: 100%;
  width: auto;
  height: auto;
  margin: 0 auto;
  border: 0 !important;
  box-shadow: none !important;
  background: transparent !important;
  object-fit: contain;
}
.global-ad-zone .ad-slot-premium { margin: .8rem auto; }
.desktop-ad-rail .ad-slot-premium { margin: 0 !important; }
.mobile-side-ads .ad-slot-premium { margin: 0 !important; }

/* Keep the theme button visible beside the hamburger on phones. */
@media (max-width: 768px) {
  .header-actions .theme-toggle-btn {
    display: inline-flex !important;
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }
  .mobile-theme-toggle { display: flex !important; }
  .mobile-side-ads {
    display: grid !important;
    width: 100%;
    grid-template-columns: 1fr !important;
    gap: .75rem;
    margin-top: .8rem;
    margin-bottom: .8rem;
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .mobile-side-ads .ad-slot-premium,
  .global-ad-zone .ad-slot-premium {
    width: 100%;
    max-width: 100%;
  }
  .mobile-side-ads .ad-slot-premium img,
  .mobile-side-ads .ad-media-video,
  .global-ad-zone .ad-slot-premium img,
  .global-ad-zone .ad-media-video {
    width: 100%;
    max-height: none;
    border-radius: 12px;
  }
}

@media (max-width: 420px) {
  .header-actions .theme-toggle-btn {
    display: inline-flex !important;
    flex-basis: 38px;
    width: 38px;
    height: 38px;
  }
  .mobile-side-ads { padding-left: .75rem; padding-right: .75rem; }
  .global-ad-zone .ad-slot-premium { margin: .65rem auto; }
}

/* =========================================================
   v3.2 — Ad sizing / inner rails / desktop install prompt
   ========================================================= */
/* Slightly larger creative immediately below the download form. */
.ad-position-below-input {
  max-width: 1040px !important;
  margin-top: 1rem !important;
  margin-bottom: 1.15rem !important;
}
.ad-position-below-input img,
.ad-position-below-input .ad-media-video {
  width: min(100%, 1000px) !important;
  max-width: 100% !important;
  max-height: 330px !important;
  object-fit: contain !important;
}

/* Pull desktop vertical ads slightly inward from the browser edge. */
@media (min-width: 1501px) {
  .desktop-ad-rail-left { left: clamp(34px, 3vw, 66px) !important; }
  .desktop-ad-rail-right { right: clamp(34px, 3vw, 66px) !important; left: auto !important; }
}

/* Native PWA install invitation on desktop. */
.desktop-install-prompt {
  position: fixed;
  top: 82px;
  right: 22px;
  z-index: 145;
  width: min(390px, calc(100vw - 32px));
  display: grid;
  grid-template-columns: 52px minmax(0,1fr);
  gap: .85rem;
  align-items: center;
  padding: 1rem 1rem .9rem;
  border-radius: 18px;
  background: rgba(255,255,255,.97);
  border: 1px solid rgba(99,102,241,.15);
  box-shadow: 0 22px 65px rgba(15,23,42,.18);
  transform: translateY(-10px);
  opacity: 0;
  transition: opacity .2s ease, transform .2s ease;
}
.desktop-install-prompt[hidden] { display: none !important; }
.desktop-install-prompt.show { opacity: 1; transform: translateY(0); }
.desktop-install-icon { width:52px;height:52px;border-radius:14px;background:#f8fafc;display:grid;place-items:center;overflow:hidden;border:1px solid #e2e8f0;grid-row:1/3; }
.desktop-install-icon img { width:100%;height:100%;object-fit:contain;padding:5px; }
.desktop-install-copy strong { display:block;color:#0f172a;font-size:.92rem;line-height:1.35;margin-bottom:.2rem; }
.desktop-install-copy span { display:block;color:#64748b;font-size:.75rem;line-height:1.45; }
.desktop-install-action { grid-column:2;justify-self:start;border:0;border-radius:10px;padding:.58rem .8rem;background:linear-gradient(135deg,var(--primary),#06b6d4);color:#fff;font-weight:800;font-size:.78rem;cursor:pointer;box-shadow:0 7px 20px rgba(79,70,229,.2); }
.desktop-install-close { position:absolute;top:8px;right:9px;border:0;background:transparent;color:#94a3b8;font-size:1.25rem;cursor:pointer;line-height:1; }
[data-theme="dark"] .desktop-install-prompt { background:rgba(8,15,29,.98);border-color:rgba(96,165,250,.16);box-shadow:0 24px 70px rgba(0,0,0,.45); }
[data-theme="dark"] .desktop-install-copy strong { color:#f8fafc; }
[data-theme="dark"] .desktop-install-copy span { color:#94a3b8; }
[data-theme="dark"] .desktop-install-icon { background:#0f1d31;border-color:rgba(148,163,184,.12); }
@media (max-width: 900px) { .desktop-install-prompt { display:none !important; } }
@media (max-width: 768px) {
  .ad-position-below-input img,
  .ad-position-below-input .ad-media-video { width:100% !important;max-height:none !important; }
}

/* =========================================================
   v3.3 — FAQ App Install CTA
   ========================================================= */
.faq-install-app-card{
  max-width:920px;
  margin:0 auto 1.25rem;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  gap:1rem;
  align-items:center;
  padding:1rem 1.1rem;
  background:linear-gradient(135deg,rgba(79,70,229,.06),rgba(6,182,212,.055)),var(--bg-surface-elevated);
  border:1px solid rgba(79,70,229,.14);
  border-radius:20px;
  box-shadow:0 14px 36px rgba(15,23,42,.06);
}
.faq-install-app-icon{width:58px;height:58px;border-radius:16px;background:#fff;border:1px solid rgba(148,163,184,.18);display:grid;place-items:center;overflow:hidden;box-shadow:0 8px 22px rgba(15,23,42,.07)}
.faq-install-app-icon img{width:100%;height:100%;object-fit:contain;padding:5px}
.faq-install-app-copy{min-width:0}.faq-install-eyebrow{display:block;color:var(--primary);font-size:.66rem;font-weight:850;letter-spacing:.11em;margin-bottom:.25rem}.faq-install-app-copy strong{display:block;color:var(--text-main);font-size:1rem;line-height:1.3}.faq-install-app-copy p{margin:.28rem 0 0;color:var(--text-muted);font-size:.82rem;line-height:1.45}
.faq-install-app-btn{min-height:46px;border:0;border-radius:13px;padding:.72rem 1rem;background:linear-gradient(135deg,var(--primary),#06b6d4);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font:inherit;font-size:.84rem;font-weight:850;cursor:pointer;box-shadow:0 10px 26px rgba(79,70,229,.2);transition:transform .16s ease,box-shadow .16s ease}
.faq-install-app-btn:hover{transform:translateY(-1px);box-shadow:0 13px 30px rgba(79,70,229,.25)}.faq-install-app-btn:active{transform:translateY(0)}.faq-install-app-btn svg{width:18px;height:18px}
[data-theme="dark"] .faq-install-app-card{border-color:rgba(96,165,250,.15);background:linear-gradient(135deg,rgba(59,130,246,.08),rgba(6,182,212,.04)),var(--bg-surface-elevated)}
[data-theme="dark"] .faq-install-app-icon{background:#0f1d31;border-color:rgba(148,163,184,.13)}
@media(max-width:700px){.faq-install-app-card{grid-template-columns:auto minmax(0,1fr);padding:.9rem}.faq-install-app-btn{grid-column:1/-1;width:100%}.faq-install-app-icon{width:50px;height:50px}.faq-install-app-copy p{font-size:.78rem}}

/* =========================================================
   v3.4 — Mobile ad safety + one-time popup polish
   ========================================================= */
/* On phones, keep advertising intentionally minimal: only the creative immediately
   below a downloader input and the one-time popup are allowed to render. */
@media (max-width: 900px) {
  .global-ad-zone-header,
  .global-ad-zone-footer,
  .global-ad-zone-content,
  .mobile-side-ads,
  .desktop-ad-rail,
  .ad-position-header,
  .ad-position-footer,
  .ad-position-sidebar,
  .ad-position-sidebar-left,
  .ad-position-sidebar-right,
  .ad-position-above-result,
  .ad-position-below-result {
    display: none !important;
  }

  .site-main .ad-slot:not(.ad-position-below-input) {
    display: none !important;
  }

  .ad-position-below-input {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: .85rem auto 1rem !important;
    padding: 0 !important;
    overflow: hidden !important;
  }
  .ad-position-below-input .ad-banner-link,
  .ad-position-below-input img,
  .ad-position-below-input .ad-media-video,
  .ad-position-below-input .ad-embed-wrap,
  .ad-position-below-input .ad-embed-wrap > * {
    width: 100% !important;
    max-width: 100% !important;
  }
  .ad-position-below-input img,
  .ad-position-below-input .ad-media-video {
    display: block !important;
    height: auto !important;
    max-height: none !important;
    margin: 0 auto !important;
    object-fit: contain !important;
    border-radius: 12px !important;
  }
  .ad-position-below-input iframe {
    width: 100% !important;
    max-width: 100% !important;
    border: 0 !important;
  }
}

/* Popup is the creative itself with a floating close control — no bulky ad frame. */
.ad-popup-layer {
  padding: clamp(.85rem, 3vw, 1.4rem) !important;
  background: rgba(15, 23, 42, .48) !important;
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}
.ad-popup-card {
  width: min(720px, calc(100vw - 2rem)) !important;
  max-height: min(82svh, 760px) !important;
  overflow: visible !important;
  background: transparent !important;
  border: 0 !important;
  border-radius: 18px !important;
  box-shadow: none !important;
  transform: translateY(10px) scale(.985);
  opacity: 0;
  transition: transform .2s ease, opacity .2s ease;
}
.ad-popup-layer.show .ad-popup-card { transform: translateY(0) scale(1); opacity: 1; }
.ad-popup-card .ad-slot,
.ad-popup-card .ad-slot-premium {
  display: block !important;
  width: 100% !important;
  max-width: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
  background: transparent !important;
  border: 0 !important;
  border-radius: 18px !important;
  box-shadow: 0 26px 72px rgba(2, 8, 23, .32) !important;
}
.ad-popup-card .ad-banner-link { width: 100% !important; }
.ad-popup-card img,
.ad-popup-card .ad-media-video {
  display: block !important;
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  max-height: 74svh !important;
  object-fit: contain !important;
  margin: 0 auto !important;
  border-radius: 18px !important;
  background: transparent !important;
}
.ad-popup-close {
  top: -13px !important;
  right: -13px !important;
  width: 42px !important;
  height: 42px !important;
  display: inline-grid !important;
  place-items: center !important;
  border: 2px solid rgba(255,255,255,.9) !important;
  border-radius: 999px !important;
  background: #0f172a !important;
  color: #fff !important;
  font-size: 1.45rem !important;
  line-height: 1 !important;
  box-shadow: 0 10px 30px rgba(2,8,23,.34) !important;
  transition: transform .15s ease, background .15s ease !important;
}
.ad-popup-close:hover { transform: scale(1.05); background: #1e293b !important; }
@media (max-width: 600px) {
  .ad-popup-layer { padding: .8rem !important; }
  .ad-popup-card { width: min(94vw, 560px) !important; max-height: 84svh !important; }
  .ad-popup-card img,
  .ad-popup-card .ad-media-video { max-height: 78svh !important; border-radius: 14px !important; }
  .ad-popup-card .ad-slot,
  .ad-popup-card .ad-slot-premium { border-radius: 14px !important; }
  .ad-popup-close { top: -11px !important; right: -8px !important; width: 40px !important; height: 40px !important; }
}

/* Never expose a browser broken-image icon inside an ad region. JS adds this class
   when a creative fails to load. */
.ad-slot.ad-media-failed { display: none !important; }
body.ad-popup-open { overflow: hidden; }
.ad-slot img { color: transparent; font-size: 0; }
@media (prefers-reduced-motion: reduce) {
  .ad-popup-card, .ad-popup-layer, .ad-popup-close { transition: none !important; }
}