/* ============================================
   EMSEN - Apple Glassmorphism Design System
   ============================================ */

:root {
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-bg-hover: rgba(255, 255, 255, 0.14);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-border-strong: rgba(255, 255, 255, 0.28);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
  --glass-blur: blur(24px) saturate(160%);
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.35);
  --text-primary: #f8fafc;
  --text-secondary: rgba(248, 250, 252, 0.62);
  --text-muted: rgba(248, 250, 252, 0.38);
  --radius-card: 20px;
  --radius-btn: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
  background: #050914;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---- Ambient BG ---- */
.bg-ambient {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(59,130,246,0.18) 0%, transparent 70%),
              radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139,92,246,0.10) 0%, transparent 60%),
              radial-gradient(ellipse 50% 30% at 20% 80%, rgba(59,130,246,0.08) 0%, transparent 60%),
              #050914;
}
.bg-ambient::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.015'%3E%3Ccircle cx='30' cy='30' r='1.5'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* ---- Glass card ---- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-card);
}

/* ---- Navbar ---- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 2rem; height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(5, 9, 20, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition);
}
.navbar.scrolled { background: rgba(5, 9, 20, 0.85); }

.nav-logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--text-primary);
}
.nav-logo-img {
  width: 36px; height: 36px; border-radius: 10px; object-fit: cover;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800; color: #fff;
  box-shadow: 0 2px 8px rgba(59,130,246,0.3);
}
.nav-logo-text { font-weight: 700; font-size: 1.05rem; letter-spacing: -0.3px; }
.nav-logo-sub { font-size: 0.68rem; color: var(--text-muted); font-weight: 400; }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  color: var(--text-secondary);
  text-decoration: none; font-size: 0.875rem; font-weight: 500;
  padding: 6px 14px; border-radius: 8px;
  transition: all var(--transition);
  letter-spacing: -0.1px;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.08);
}
.nav-links a.active { color: var(--accent-light); }

.nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-btn) !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: all var(--transition) !important;
}
.nav-cta:hover {
  background: var(--accent-light) !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.mobile-toggle {
  display: none; background: none; border: none;
  cursor: pointer; padding: 8px; color: var(--text-primary);
}
.mobile-toggle svg { width: 24px; height: 24px; }

.mobile-menu {
  position: fixed; inset: 0; z-index: 99;
  background: rgba(5, 9, 20, 0.97);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a {
  color: var(--text-primary); text-decoration: none;
  font-size: 1.4rem; font-weight: 600;
  padding: 14px 32px; border-radius: 14px;
  transition: background var(--transition);
  letter-spacing: -0.3px;
}
.mobile-menu a:hover { background: rgba(255,255,255,0.08); }
.mobile-close {
  position: absolute; top: 20px; right: 20px;
  background: none; border: none; color: var(--text-primary);
  font-size: 2rem; cursor: pointer; padding: 8px; line-height: 1;
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 100px 2rem 60px;
  perspective: 1200px;
}
.hero-inner {
  max-width: 1100px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px;
  align-items: center;
}
.hero-content { }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.3);
  color: var(--accent-light);
  padding: 6px 16px; border-radius: 50px;
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.5px;
  text-transform: uppercase; margin-bottom: 24px;
}
.hero-badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-light);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800; line-height: 1.08;
  letter-spacing: -1.5px; margin-bottom: 20px;
  background: linear-gradient(135deg, #f8fafc 0%, #c7d2fe 50%, #93c5fd 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.1rem; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 36px; max-width: 480px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #fff;
  padding: 13px 28px; border-radius: var(--radius-btn);
  text-decoration: none; font-weight: 600; font-size: 0.95rem;
  border: none; cursor: pointer;
  box-shadow: 0 4px 20px var(--accent-glow);
  transition: all var(--transition);
  letter-spacing: -0.2px;
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--accent-glow);
}
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--glass-bg); color: var(--text-primary);
  padding: 13px 24px; border-radius: var(--radius-btn);
  text-decoration: none; font-weight: 500; font-size: 0.95rem;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  transition: all var(--transition);
  letter-spacing: -0.2px;
}
.btn-ghost:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-strong);
  transform: translateY(-2px);
}

/* Hero 3D card */
.hero-visual {
  display: flex; justify-content: center;
  transform-style: preserve-3d;
}
.hero-card-3d {
  position: relative; width: 100%; max-width: 440px;
  transform-style: preserve-3d;
  transition: transform 0.12s ease-out;
}
.hero-card-inner {
  background: linear-gradient(135deg, rgba(59,130,246,0.15) 0%, rgba(139,92,246,0.10) 100%);
  backdrop-filter: blur(30px) saturate(160%);
  -webkit-backdrop-filter: blur(30px) saturate(160%);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 28px;
  padding: 40px 36px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.15);
  transform: translateZ(30px);
}
.hero-card-icon {
  width: 64px; height: 64px; border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(59,130,246,0.4);
}
.hero-card-title {
  font-size: 1.5rem; font-weight: 700;
  letter-spacing: -0.5px; margin-bottom: 8px;
  background: linear-gradient(135deg, #f8fafc, #93c5fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-card-sub {
  color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 20px;
}
.hero-card-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.stat-item {
  text-align: center; padding: 14px 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
}
.stat-value {
  font-size: 1.4rem; font-weight: 800;
  background: linear-gradient(135deg, #60a5fa, #818cf8);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.stat-label {
  font-size: 0.7rem; color: var(--text-muted);
  margin-top: 4px; text-transform: uppercase; letter-spacing: 0.5px;
}

.hero-orb {
  position: absolute; border-radius: 50%; filter: blur(60px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 70%);
  top: -80px; right: -60px;
  animation: float-orb 8s ease-in-out infinite;
}
.hero-orb-2 {
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(139,92,246,0.20) 0%, transparent 70%);
  bottom: -40px; left: -40px;
  animation: float-orb 10s ease-in-out infinite reverse;
}
@keyframes float-orb {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

/* ---- Section base ---- */
.section {
  padding: 80px 2rem;
  max-width: 1200px; margin: 0 auto;
}
.section-label {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent-light);
  margin-bottom: 12px; display: flex; align-items: center; gap: 8px;
}
.section-label::before {
  content: ''; display: inline-block;
  width: 20px; height: 2px; background: var(--accent);
  border-radius: 1px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800; letter-spacing: -1px;
  line-height: 1.15; margin-bottom: 16px;
  background: linear-gradient(135deg, #f8fafc, #c7d2fe);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-sub {
  color: var(--text-secondary); font-size: 1rem;
  max-width: 560px; margin-bottom: 48px; line-height: 1.7;
}

/* ---- Grid cards ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.article-card {
  padding: 28px;
  transition: all var(--transition);
  cursor: pointer;
  transform: translateY(0);
}
.article-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-strong);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
}
.card-category {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--accent-light);
  margin-bottom: 12px;
}
.card-title {
  font-size: 1.05rem; font-weight: 700; line-height: 1.35;
  letter-spacing: -0.3px; margin-bottom: 10px;
  color: var(--text-primary);
}
.card-excerpt {
  font-size: 0.875rem; color: var(--text-secondary);
  line-height: 1.6; margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.card-meta {
  font-size: 0.75rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 12px;
}
.card-date::before { content: none; }

/* Skeleton loading */
.skeleton-card {
  padding: 28px;
}
.skeleton-line {
  background: rgba(255,255,255,0.06);
  border-radius: 6px;
  animation: shimmer 1.5s ease-in-out infinite;
  margin-bottom: 10px;
}
@keyframes shimmer {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* ---- Profil ---- */
.profil-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.profil-card { padding: 36px; }
.profil-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(59,130,246,0.2), rgba(139,92,246,0.15));
  border: 1px solid rgba(59,130,246,0.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px;
}
.profil-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.3px; }
.profil-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }
.profil-card ul { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.profil-card li { font-size: 0.88rem; color: var(--text-secondary); padding-left: 20px; position: relative; }
.profil-card li::before { content: '✓'; position: absolute; left: 0; color: var(--accent-light); font-size: 0.8rem; }

/* ---- Fitur ---- */
.fitur-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px;
}
.fitur-card {
  padding: 28px 24px;
  transition: all var(--transition);
}
.fitur-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-strong);
  transform: translateY(-3px);
}
.fitur-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 16px;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.fitur-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.2px; }
.fitur-card p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.6; }

/* ---- Kontak ---- */
.kontak-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.kontak-card { padding: 36px; }
.kontak-list { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.kontak-list li {
  display: flex; align-items: flex-start; gap: 14px;
  font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6;
}

/* ---- Footer ---- */
.footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 32px 2rem;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  text-align: center; color: var(--text-muted); font-size: 0.8rem;
}
.footer a { color: var(--text-muted); text-decoration: none; transition: color var(--transition); }
.footer a:hover { color: var(--accent-light); }

/* ---- Scroll reveal ---- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .profil-grid, .kontak-inner { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 1.25rem; }
  .navbar { padding: 0 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}