/* ==========================================================================
   HIGHLYT WEBSITE DESIGN SYSTEM
   Source-aligned with Highlyt Compose Theme (Theme.kt & DESIGN.md)
   ========================================================================== */

:root {
  /* Exact Theme Tokens from Theme.kt */
  --bg-canvas: #18101B;
  --bg-surface: #201525;
  --bg-card: #231828;
  --bg-card-hover: #2E1F35;
  --bg-muted: #2A1D30;
  --bg-glass: rgba(32, 21, 37, 0.88);

  --border-subtle: rgba(162, 79, 248, 0.15);
  --border-medium: rgba(162, 79, 248, 0.30);
  --border-focus: rgba(162, 79, 248, 0.70);

  --primary: #A24FF8;
  --primary-hover: #B468FF;
  --primary-gradient: linear-gradient(135deg, #C27BFF 0%, #A24FF8 50%, #6D3FB0 100%);
  --primary-light: rgba(162, 79, 248, 0.12);
  --primary-glow: rgba(162, 79, 248, 0.25);

  --secondary: #FAAC4C;
  --secondary-hover: #FFC06E;
  --secondary-light: rgba(250, 172, 76, 0.12);
  --secondary-glow: rgba(250, 172, 76, 0.25);
  --secondary-foreground: #1A1108;

  --text-primary: #FFFFFF;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --warning-bg: rgba(234, 88, 12, 0.12);
  --warning-border: rgba(234, 88, 12, 0.35);
  --warning-text: #FDBA74;

  /* Premium System Font Stack (No External Network Dependencies) */
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Sora", "Segoe UI", Roboto, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;

  /* Layout & Spacing */
  --container-max-width: 1200px;
  --legal-max-width: 880px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  --shadow-card: 0 12px 32px -8px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-subtle);
  --shadow-glow: 0 0 40px -10px var(--primary-glow);

  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
}

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

/* Background Atmosphere */
.bg-glow-container {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1400px;
  height: 750px;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.bg-glow-violet {
  position: absolute;
  top: -120px;
  left: 20%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(162, 79, 248, 0.16) 0%, rgba(162, 79, 248, 0) 70%);
  filter: blur(80px);
}

.bg-glow-amber {
  position: absolute;
  top: -80px;
  right: 20%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(250, 172, 76, 0.10) 0%, rgba(250, 172, 76, 0) 70%);
  filter: blur(80px);
}

/* Typography Headings */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.container-legal {
  max-width: var(--legal-max-width);
}

/* Buttons & Interactive Elements */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #FFFFFF !important;
  box-shadow: 0 4px 18px rgba(162, 79, 248, 0.30);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(162, 79, 248, 0.45);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary) !important;
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-amber {
  background: var(--secondary);
  color: var(--secondary-foreground) !important;
  font-weight: 700;
  box-shadow: 0 4px 18px var(--secondary-glow);
}

.btn-amber:hover {
  background: var(--secondary-hover);
  transform: translateY(-2px);
}

.btn-danger {
  background: #DC2626;
  color: #FFFFFF !important;
}

.btn-danger:hover {
  background: #B91C1C;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-violet {
  background: var(--primary-light);
  color: #C27BFF;
  border: 1px solid var(--border-medium);
}

.badge-amber {
  background: var(--secondary-light);
  color: var(--secondary);
  border: 1px solid rgba(250, 172, 76, 0.3);
}

/* Navigation Header */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-brand-img {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  object-fit: cover;
  display: block;
}

.nav-brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

/* Hero Section */
.hero-section {
  padding: 72px 0 96px;
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

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

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #FFFFFF 0%, #C27BFF 60%, #FAAC4C 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 540px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Product Screenshot Frame */
.screenshot-frame-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.screenshot-frame {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 9 / 19.5;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.7), 0 0 30px var(--primary-glow);
  position: relative;
  display: flex;
  flex-direction: column;
}

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

/* Neutral Placeholder (Used when screenshot images are pending) */
.neutral-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-canvas) 100%);
  text-align: center;
  gap: 12px;
}

.neutral-placeholder-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.neutral-placeholder-icon img {
  width: 28px;
  height: 28px;
  border-radius: 8px;
}

.neutral-placeholder-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Section Header Structure */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-header .badge {
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.025em;
}

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

/* Feature Grid / Product Value Section */
.features-section {
  padding: 96px 0;
  border-top: 1px solid var(--border-subtle);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.feature-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), 0 0 30px var(--primary-light);
}

.feature-card.col-7 { grid-column: span 7; }
.feature-card.col-5 { grid-column: span 5; }
.feature-card.col-4 { grid-column: span 4; }
.feature-card.col-8 { grid-column: span 8; }
.feature-card.col-12 { grid-column: span 12; }

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-icon-wrapper.amber {
  background: var(--secondary-light);
  border-color: rgba(250, 172, 76, 0.3);
  color: var(--secondary);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Deep Dive Section */
.deep-dive-section {
  padding: 96px 0;
  border-top: 1px solid var(--border-subtle);
}

.deep-dive-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.deep-dive-grid.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

/* Highlights Section */
.highlights-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}

.highlight-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.highlight-box.custom {
  border-color: rgba(250, 172, 76, 0.35);
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(250, 172, 76, 0.04) 100%);
}

.highlight-box h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* How It Works Section */
.how-it-works-section {
  padding: 96px 0;
  border-top: 1px solid var(--border-subtle);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
}

.step-number {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.7;
  margin-bottom: 14px;
}

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

/* Use Cases Section */
.use-cases-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.use-case-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 16px;
  text-align: center;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.use-case-pill:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

/* Final CTA Section */
.final-cta-section {
  padding: 112px 0;
  text-align: center;
  position: relative;
  border-top: 1px solid var(--border-subtle);
}

.final-cta-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(162, 79, 248, 0.12) 100%);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 72px 32px;
  box-shadow: var(--shadow-glow);
  max-width: 820px;
  margin: 0 auto;
}

.final-cta-title {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.final-cta-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Modal Dialog for Coming Soon App Store State */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 5, 14, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  max-width: 460px;
  width: 100%;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), var(--shadow-glow);
  transform: scale(0.95);
  transition: transform var(--transition-fast);
  position: relative;
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
}

/* Legal & Support Card Layouts */
main.legal-content {
  padding: 40px 0 80px;
  flex: 1;
}

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-card);
}

.legal-card section {
  margin-bottom: 36px;
}

.legal-card section:last-child {
  margin-bottom: 0;
}

.legal-card h1 {
  font-size: 2.25rem;
  margin-bottom: 12px;
}

.legal-card h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.legal-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--text-primary);
}

.legal-card p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.legal-card ul, .legal-card ol {
  color: var(--text-secondary);
  margin: 0 0 18px 24px;
  font-size: 1rem;
  line-height: 1.65;
}

.legal-card li {
  margin-bottom: 8px;
}

.effective-date {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 24px;
}

.meta-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 24px;
  font-size: 0.9375rem;
}

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

.meta-table th {
  background: var(--primary-light);
  color: var(--text-primary);
  font-weight: 700;
  width: 32%;
}

.meta-table td {
  color: var(--text-secondary);
}

.alert-box {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
  color: var(--warning-text);
}

.alert-box strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 6px;
}

.alert-box p {
  color: var(--warning-text);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

.cta-box {
  text-align: center;
  padding: 28px;
  background: var(--primary-light);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  margin: 28px 0;
}

.section-grid {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.info-item:hover {
  border-color: var(--primary);
  transform: translateX(4px);
  background: var(--bg-card);
}

.info-item .title {
  font-weight: 700;
  font-size: 1rem;
}

.info-item .arrow {
  color: var(--primary);
  font-size: 1.2rem;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.support-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}

.support-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.support-card p {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Footer Section */
footer.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 56px 0 36px;
  margin-top: auto;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

.footer-brand {
  max-width: 300px;
}

.footer-brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.footer-nav {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.footer-nav-col a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-nav-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8125rem;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .hero-grid, .deep-dive-grid, .deep-dive-grid.reverse {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-title {
    font-size: 2.75rem;
  }
  .feature-card.col-7,
  .feature-card.col-5,
  .feature-card.col-4,
  .feature-card.col-8 {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  .nav-bar {
    height: 64px;
  }
  .nav-links {
    display: none;
  }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-medium);
    padding: 20px;
    gap: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
  }
  .nav-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.15rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .steps-grid, .highlights-comparison {
    grid-template-columns: 1fr;
  }
  .final-cta-card {
    padding: 40px 20px;
  }
  .final-cta-title {
    font-size: 1.85rem;
  }
  .legal-card {
    padding: 24px 18px;
  }
}

@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;
  }
}