/* LinguaCue Modern Design System */
:root {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-card: #141e33;
  --bg-card-hover: #1a2742;
  --border-subtle: #1e293b;
  --border-active: #3b82f6;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --brand-blue: #2563eb;
  --brand-blue-hover: #1d4ed8;
  --brand-cyan: #38bdf8;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--brand-cyan);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #7dd3fc;
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Nav */
header {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

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

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-link:hover {
  text-decoration: none;
  opacity: 0.9;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-menu a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-menu a:hover, .nav-menu a.active {
  color: var(--text-primary);
  text-decoration: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-blue), #3b82f6);
  color: #ffffff !important;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 9999px;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  text-decoration: none !important;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-blue-hover), var(--brand-blue));
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  color: var(--text-primary) !important;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 9999px;
  border: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none !important;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: #334155;
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, rgba(139, 92, 246, 0.08) 50%, transparent 80%);
  filter: blur(50px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto;
}

.badge-tag {
  display: inline-block;
  background: rgba(37, 99, 235, 0.15);
  color: var(--brand-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 6px 16px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 36px;
}

.cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.feature-banner {
  max-width: 900px;
  margin: 0 auto 60px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.feature-banner img {
  width: 100%;
  height: auto;
  display: block;
}

/* Feature Grid */
.section {
  padding: 70px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all 0.25s ease;
}

.card:hover {
  border-color: #334155;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 18px;
  display: inline-block;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

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

/* Screenshots Showcase */
.screenshot-slider {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 20px 0 40px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
}

.screenshot-item {
  flex: 0 0 280px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.08);
  transition: transform 0.25s ease;
}

.screenshot-item:hover {
  transform: translateY(-4px);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* Legal / Policy Content Layout */
.legal-wrapper {
  max-width: 820px;
  margin: 50px auto 80px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 48px;
}

.legal-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.legal-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

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

.legal-content h2 {
  font-size: 1.45rem;
  font-weight: 700;
  margin: 36px 0 14px;
  color: var(--text-primary);
  border-left: 3px solid var(--brand-blue);
  padding-left: 12px;
}

.legal-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 24px 0 10px;
  color: #e2e8f0;
}

.legal-content p, .legal-content li {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.legal-content ul, .legal-content ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}

.legal-content th, .legal-content td {
  border: 1px solid var(--border-subtle);
  padding: 12px 16px;
  text-align: left;
}

.legal-content th {
  background: rgba(30, 41, 59, 0.5);
  color: var(--text-primary);
}

.callout-box {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 24px 0;
}

.callout-box p {
  color: #e2e8f0;
  margin-bottom: 0;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.25);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* Footer */
footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  padding: 48px 0 32px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 36px;
  margin-bottom: 36px;
}

.footer-brand {
  max-width: 320px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.5;
}

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

.footer-col h4 {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
}

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

.footer-col li {
  margin-bottom: 10px;
}

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

.footer-col a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .nav-menu {
    display: none;
  }
  .legal-wrapper {
    padding: 24px;
  }
}