/* ===== DHG Landing Page — Premium Dark Theme ===== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.08);
  --glass-border: rgba(255,255,255,0.08);
  --glass-border-hover: rgba(255,255,255,0.15);
  --text-primary: #ffffff;
  --text-secondary: rgba(255,255,255,0.7);
  --text-muted: rgba(255,255,255,0.45);
  --accent: #fa3d33;
  --accent-light: #ff6b5e;
  --accent-glow: rgba(250,61,51,0.35);
  --gradient-accent: linear-gradient(135deg, #fa3d33 0%, #ff6b5e 50%, #ff9a52 100%);
  --gradient-hero: linear-gradient(160deg, #0a0a0f 0%, #12121c 50%, #0a0a0f 100%);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 40px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0;
  transition: background .4s, backdrop-filter .4s, box-shadow .4s, padding .4s;
}
.navbar.scrolled {
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 var(--glass-border);
  padding: 10px 0;
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
}
.navbar-brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 800; font-size: 20px; letter-spacing: -0.5px;
}
.navbar-brand img {
  width: 40px; height: 40px; border-radius: 10px;
}
.navbar-brand span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex; align-items: center; gap: 32px; list-style: none;
}
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--text-secondary);
  transition: color .3s;
  position: relative;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--gradient-accent); border-radius: 1px;
  transition: width .3s;
}
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--gradient-accent) !important;
  color: #fff !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 14px !important;
  font-weight: 600 !important;
  transition: transform .3s, box-shadow .3s !important;
}
.nav-cta:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 30px var(--accent-glow) !important;
}
.nav-cta::after { display: none !important; }

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 10%; right: -10%;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
  bottom: 10%; left: -5%;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  animation: float 10s ease-in-out infinite reverse;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-content { max-width: 560px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(250,61,51,0.1);
  border: 1px solid rgba(250,61,51,0.2);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 13px; font-weight: 600; color: var(--accent-light);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}
.hero h1 .accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--gradient-accent);
  color: #fff;
  padding: 16px 32px;
  border-radius: 50px;
  font-size: 16px; font-weight: 700;
  transition: transform .3s, box-shadow .3s;
  border: none; cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px var(--accent-glow);
}
.btn-secondary {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 16px 32px;
  border-radius: 50px;
  font-size: 16px; font-weight: 600;
  transition: background .3s, border-color .3s, transform .3s;
  cursor: pointer;
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
}

/* Hero Phone Mockup */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.phone-mockup {
  position: relative;
  width: 280px;
  height: 580px;
  border-radius: 40px;
  border: 3px solid rgba(255,255,255,0.15);
  overflow: hidden;
  background: #000;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.05),
    0 30px 80px rgba(0,0,0,0.6),
    0 0 60px var(--accent-glow);
  animation: phoneFloat 6s ease-in-out infinite;
}
@keyframes phoneFloat {
  0%, 100% { transform: translateY(0) rotate(2deg); }
  50% { transform: translateY(-15px) rotate(0deg); }
}
.phone-mockup::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 120px; height: 28px;
  background: #000;
  border-radius: 0 0 18px 18px;
  z-index: 10;
}
.phone-mockup img {
  width: 100%; height: 100%;
  object-fit: cover;
}

/* ---------- Section Common ---------- */
section { padding: 120px 0; }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 72px;
}
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-light);
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Features ---------- */
.features { background: var(--bg-secondary); position: relative; }
.features::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: transform .4s, border-color .4s, box-shadow .4s, background .4s;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity .4s;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-hover);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  background: rgba(250,61,51,0.1);
}
.feature-card:nth-child(2) .feature-icon { background: rgba(99,102,241,0.1); }
.feature-card:nth-child(3) .feature-icon { background: rgba(16,185,129,0.1); }
.feature-card:nth-child(4) .feature-icon { background: rgba(245,158,11,0.1); }
.feature-card:nth-child(5) .feature-icon { background: rgba(236,72,153,0.1); }
.feature-card:nth-child(6) .feature-icon { background: rgba(139,92,246,0.1); }

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Screenshots ---------- */
.screenshots { position: relative; }
.screenshots::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

.carousel-wrapper {
  position: relative;
  overflow: hidden;
  margin: 0 -24px;
  padding: 40px 0;
}
.carousel-track {
  display: flex;
  gap: 28px;
  padding: 0 calc(50% - 140px);
  transition: transform .5s cubic-bezier(.25,.46,.45,.94);
  cursor: grab;
}
.carousel-track:active { cursor: grabbing; }

.carousel-item {
  flex: 0 0 280px;
  border-radius: 36px;
  overflow: hidden;
  border: 3px solid rgba(255,255,255,0.1);
  background: #000;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  transition: transform .5s, box-shadow .5s, border-color .5s;
  position: relative;
}
.carousel-item::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 100px; height: 24px;
  background: #000;
  border-radius: 0 0 14px 14px;
  z-index: 10;
}
.carousel-item.active {
  transform: scale(1.08);
  border-color: var(--accent);
  box-shadow: 0 30px 80px rgba(0,0,0,0.5), 0 0 40px var(--accent-glow);
}
.carousel-item img {
  width: 100%;
  height: 580px;
  object-fit: cover;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  margin-top: 40px;
}
.carousel-btn {
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background .3s, border-color .3s, transform .3s;
}
.carousel-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--glass-border-hover);
  transform: scale(1.1);
}
.carousel-dots {
  display: flex; gap: 8px;
}
.carousel-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: none; cursor: pointer;
  transition: background .3s, transform .3s, width .3s;
}
.carousel-dot.active {
  background: var(--accent);
  width: 28px;
  border-radius: 5px;
}

/* ---------- Stats ---------- */
.stats {
  background: var(--bg-secondary);
  padding: 80px 0;
  position: relative;
}
.stats::before, .stats::after {
  content: '';
  position: absolute;
  left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}
.stats::before { top: 0; }
.stats::after { bottom: 0; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item h3 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}
.stat-item p {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 500;
}

/* ---------- CTA ---------- */
.cta { position: relative; text-align: center; }
.cta-card {
  background: linear-gradient(135deg, rgba(250,61,51,0.08) 0%, rgba(255,107,94,0.04) 100%);
  border: 1px solid rgba(250,61,51,0.15);
  border-radius: var(--radius-lg);
  padding: 80px 60px;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  width: 300px; height: 300px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: -50%; right: -10%;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}
.cta-card h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  position: relative;
}
.cta-card p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 480px;
  margin-left: auto; margin-right: auto;
  position: relative;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ---------- Footer ---------- */
.footer {
  padding: 60px 0 32px;
  background: var(--bg-secondary);
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 800; font-size: 18px;
  margin-bottom: 16px;
}
.footer-brand img {
  width: 36px; height: 36px; border-radius: 10px;
}
.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 12px; }
.footer-col a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color .3s;
}
.footer-col a:hover { color: var(--accent-light); }

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom-links {
  display: flex; gap: 24px;
}
.footer-bottom-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color .3s;
}
.footer-bottom-links a:hover { color: var(--accent-light); }

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s cubic-bezier(.25,.46,.45,.94), transform .8s cubic-bezier(.25,.46,.45,.94);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }
.reveal-delay-5 { transition-delay: .5s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(10,10,15,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--glass-border);
  }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content { max-width: 100%; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-visual { margin-top: 40px; }
  .phone-mockup { width: 220px; height: 460px; }

  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .carousel-item {
    flex: 0 0 220px;
    border-radius: 28px;
  }
  .carousel-item img { height: 450px; }
  .carousel-track { padding: 0 calc(50% - 110px); }

  .cta-card { padding: 48px 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
}