/* === Buddy Connect - Professional Design System === */

:root {
  --bg-primary: #060d1a;
  --bg-secondary: #0d1a30;
  --bg-card: #111d38;
  --bg-card-hover: #162544;
  --bg-input: #0a1628;
  --border-color: #1e3355;
  --border-accent: #0088cc;
  --text-primary: #e8edf5;
  --text-secondary: #8b9db5;
  --text-muted: #556680;
  --text-heading: #ffffff;
  --accent-cyan: #00b4d8;
  --accent-blue: #0077b6;
  --accent-orange: #f77f00;
  --accent-green: #06d6a0;
  --accent-red: #ef476f;
  --gradient-hero: linear-gradient(135deg, #0077b6 0%, #00b4d8 50%, #06d6a0 100%);
  --gradient-card: linear-gradient(145deg, #111d38 0%, #0d1a30 100%);
  --gradient-cta: linear-gradient(135deg, #f77f00 0%, #ef476f 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 180, 216, 0.15);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-sans: Inter, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: JetBrains Mono, Fira Code, SF Mono, Courier New, monospace;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0, 119, 182, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 180, 216, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(6, 214, 160, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* === Typography === */

h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }

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

a:hover {
  color: var(--accent-green);
  text-decoration: underline;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

strong {
  color: var(--text-heading);
  font-weight: 600;
}

/* === Layout === */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

section {
  padding: 5rem 0;
  position: relative;
  z-index: 1;
}

/* === Navigation === */

.navbar {
  background: rgba(6, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(6, 13, 26, 0.95);
  border-bottom-color: var(--border-accent);
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.03em;
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  color: var(--text-heading);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-hero);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.1rem;
}

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

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

.nav-links a:hover {
  color: var(--accent-cyan);
  text-decoration: none;
}

.nav-cta {
  background: var(--gradient-hero);
  color: #fff !important;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600 !important;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast) !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

/* === Hero Section === */

.hero {
  padding: 6rem 0 4rem;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 119, 182, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: rgba(0, 180, 216, 0.1);
  border: 1px solid rgba(0, 180, 216, 0.3);
  color: var(--accent-cyan);
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.hero h1 {
  margin-bottom: 1.25rem;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  max-width: 650px;
  margin: 0 auto 2.5rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Buttons === */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  font-family: var(--font-sans);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 119, 182, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(0, 119, 182, 0.4);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-cta {
  background: var(--gradient-cta);
  color: #fff;
  box-shadow: 0 4px 20px rgba(239, 71, 111, 0.25);
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

.btn-cta:hover {
  box-shadow: 0 6px 30px rgba(239, 71, 111, 0.4);
  color: #fff;
}

/* === Cards === */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-hero);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.card-icon.blue {
  background: rgba(0, 119, 182, 0.15);
  color: var(--accent-blue);
}

.card-icon.cyan {
  background: rgba(0, 180, 216, 0.15);
  color: var(--accent-cyan);
}

.card-icon.green {
  background: rgba(6, 214, 160, 0.15);
  color: var(--accent-green);
}

.card-icon.orange {
  background: rgba(247, 127, 0, 0.15);
  color: var(--accent-orange);
}

.card-icon.red {
  background: rgba(239, 71, 111, 0.15);
  color: var(--accent-red);
}

.card h3 {
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.card-link {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: 0.6rem;
  text-decoration: none;
}

/* === Section Headers === */

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

/* === Features Grid === */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.feature-item:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-sm);
}

.feature-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  margin-top: 0.45rem;
  flex-shrink: 0;
}

.feature-content h4 {
  margin-bottom: 0.35rem;
  font-size: 1rem;
}

.feature-content p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* === Stats === */

.stats-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 4rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.5rem;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.35rem;
}

.stat-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0;
}

/* === CTA Section === */

.cta-section {
  text-align: center;
  padding: 5rem 0;
}

.cta-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 3.5rem 2rem;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(0, 180, 216, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card h2 {
  margin-bottom: 1rem;
}

.cta-card p {
  font-size: 1.1rem;
  max-width: 550px;
  margin: 0 auto 2rem;
}

/* === Timeline === */

.timeline {
  position: relative;
  padding-left: 2rem;
  margin-top: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.35rem;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 3px solid var(--bg-primary);
}

.timeline-item h3 {
  margin-bottom: 0.5rem;
}

.timeline-item p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* === Footer === */

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

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--text-heading);
  margin-bottom: 1.25rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-col ul li {
  margin-bottom: 0.6rem;
}

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

.footer-col ul li a:hover {
  color: var(--accent-cyan);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* === Content Pages (Privacy / Terms) === */

.content-page {
  padding: 4rem 0 5rem;
}

.content-page h1 {
  margin-bottom: 0.5rem;
  font-size: 2.2rem;
}

.content-page .last-updated {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.content-page h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-size: 1.4rem;
  color: var(--accent-cyan);
}

.content-page h3 {
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.content-page p {
  line-height: 1.85;
  margin-bottom: 1.15rem;
}

.content-page ul,
.content-page ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

.content-page ul li,
.content-page ol li {
  margin-bottom: 0.5rem;
}

.content-page .info-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.5rem;
  margin: 2rem 0;
}

.content-page .info-box p {
  margin-bottom: 0;
}

.content-page .info-box.warning {
  border-left-color: var(--accent-orange);
}

/* === Contact Section === */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: all var(--transition-normal);
}

.contact-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.contact-card h3 {
  margin-bottom: 0.5rem;
}

.contact-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* === Table Styles === */

.table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table th,
table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

table th {
  background: var(--bg-card);
  color: var(--text-heading);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* === Responsive === */

@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  section {
    padding: 3rem 0;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .stats-grid {
    gap: 1.5rem;
  }

  .cta-card {
    padding: 2.5rem 1.5rem;
  }

  .content-page h1 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .container,
  .container-narrow {
    padding: 0 1rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

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

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

/* === Animations === */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* === Utility === */

.text-muted {
  color: var(--text-muted);
}

.text-cyan {
  color: var(--accent-cyan);
}

.text-orange {
  color: var(--accent-orange);
}

.text-green {
  color: var(--accent-green);
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.highlight-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  margin: 1.5rem 0;
}

.highlight-box p {
  margin-bottom: 0;
}

.divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2.5rem 0;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.breadcrumb a {
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--accent-cyan);
}