:root {
  --bg-main: #0a0d14;
  --bg-surface: #111726;
  --bg-card: #151d30;
  --bg-card-hover: #1c263f;
  --border-subtle: #232f48;
  --border-focus: #4f46e5;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #6366f1;
  --accent-hover: #4f46e5;
  --accent-cyan: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(6, 182, 212, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ── Container ─────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Header & Navigation ────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 32px;
  height: 32px;
  color: var(--accent-cyan);
}

.brand-title {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tag {
  font-size: 0.7rem;
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1.05rem;
}

.btn-primary {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.btn-gradient {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.3);
}

.btn-gradient:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(6, 182, 212, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-outline:hover {
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
}

/* ── Hero Section ───────────────────────────────────────── */
.hero {
  padding: 4.5rem 0 3rem;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #c7d2fe;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 2.5rem;
}

/* ── Interactive Slider Component ──────────────────────── */
.slider-showcase {
  max-width: 900px;
  margin: 0 auto 3.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.slider-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.slider-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sample-tabs {
  display: flex;
  gap: 0.5rem;
}

.sample-tab {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.sample-tab:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.sample-tab.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
}

.slider-container {
  position: relative;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  user-select: none;
  background: #000000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
  cursor: col-resize;
}

.slider-image-wrapper {
  position: relative;
  width: 100%;
  display: block;
}

.slider-image {
  width: 100%;
  height: auto;
  display: block;
  pointer-events: none;
}

.slider-image-before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  will-change: clip-path;
}

.slider-image-before img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.slider-badge {
  position: absolute;
  top: 1rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 5;
  pointer-events: none;
  backdrop-filter: blur(8px);
}

.badge-raw {
  left: 1rem;
  background: rgba(15, 23, 42, 0.8);
  color: #f87171;
  border: 1px solid rgba(248, 113, 113, 0.4);
}

.badge-translated {
  right: 1rem;
  background: rgba(15, 23, 42, 0.8);
  color: #4ade80;
  border: 1px solid rgba(74, 222, 128, 0.4);
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 3px;
  background: #ffffff;
  z-index: 10;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.8);
}

.slider-handle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 38px;
  height: 38px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.6), 0 0 0 2px var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0f172a;
}

.slider-handle-button svg {
  width: 20px;
  height: 20px;
}

/* ── Upload Card ────────────────────────────────────────── */
.upload-section {
  max-width: 820px;
  margin: 0 auto 5rem;
}

.upload-card {
  background: var(--bg-surface);
  border: 2px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  transition: all 0.25s ease;
  position: relative;
  cursor: pointer;
}

.upload-card:hover, .upload-card.drag-over {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.04);
  box-shadow: var(--shadow-glow);
}

.upload-card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.upload-icon-circle {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.upload-icon-circle svg {
  width: 32px;
  height: 32px;
}

.upload-title {
  font-size: 1.35rem;
  font-weight: 700;
}

.upload-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 480px;
}

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

.upload-options {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.select-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.custom-select {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

.custom-select:focus {
  border-color: var(--border-focus);
}

.quota-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: #34d399;
}

/* ── Processing State ───────────────────────────────────── */
.processing-overlay {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(17, 23, 38, 0.95);
  border-radius: var(--radius-lg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  z-index: 20;
}

.processing-overlay.active {
  display: flex;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(99, 102, 241, 0.2);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.processing-step {
  font-size: 1.1rem;
  font-weight: 600;
}

.processing-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── Features Grid ──────────────────────────────────────── */
.features-section {
  padding: 4rem 0;
  border-top: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-icon-wrapper svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ── Pricing Cards ──────────────────────────────────────── */
.pricing-section {
  padding: 4.5rem 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1050px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: var(--accent-primary);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, var(--bg-surface) 40%);
  box-shadow: var(--shadow-glow);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #ffffff;
  padding: 0.25rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.plan-header {
  margin-bottom: 1.5rem;
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

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

.plan-price-block {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.plan-price {
  font-size: 2.85rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

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

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.plan-feature-item svg {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* ── Result Page Styles ─────────────────────────────────── */
.result-section {
  padding: 3rem 0;
}

.result-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.watermark-notice-banner {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fbbf24;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.95rem;
}

/* ── Legal & Content Pages ──────────────────────────────── */
.legal-container {
  max-width: 800px;
  margin: 3rem auto 5rem;
  padding: 2.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.legal-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.legal-header h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.legal-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.legal-content h2 {
  font-size: 1.35rem;
  margin: 1.75rem 0 0.75rem;
  color: var(--text-primary);
}

.legal-content p, .legal-content ul {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 1rem;
  line-height: 1.7;
}

.legal-content ul {
  padding-left: 1.5rem;
}

.legal-content li {
  margin-bottom: 0.5rem;
}

/* ── Footer & DMCA ──────────────────────────────────────── */
.footer {
  margin-top: auto;
  background: #080a10;
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0 2rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  max-width: 360px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.footer-nav {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}

.footer-nav-col h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-nav-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-nav-col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.15s ease;
}

.footer-nav-col a:hover {
  color: var(--accent-cyan);
}

.dmca-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.dmca-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.dmca-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.dmca-text a {
  color: #38bdf8;
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .nav-links {
    display: none;
  }
  .upload-card {
    padding: 2rem 1rem;
  }
  .slider-showcase {
    padding: 1rem;
  }
}