/* ============================================================
   E-LEARNING PLATFORM — Landing Page Styles
   Hero, Navbar, Sections, Footer (Public Pages)
   ============================================================ */

/* ═══════════════════════════════════════
   LANDING NAVBAR
   ═══════════════════════════════════════ */
.landing-nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--space-8);
  z-index: 1000;
  transition: all 0.4s ease;
  background: rgba(57, 123, 223, 0.95);
}
.landing-nav.scrolled {
  background: rgba(57, 123, 223, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.landing-nav .nav-brand {
  display: flex; align-items: center; gap: var(--space-3);
  text-decoration: none;
}
.landing-nav .nav-brand-icon {
  width: 38px; height: 38px;
  /* background: linear-gradient(135deg, var(--gold-500), var(--gold-600)); */
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 1.1rem;
}
.landing-nav .nav-brand-text {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--white);
}
.landing-nav .nav-links {
  display: flex; align-items: center; gap: var(--space-1);
}
.landing-nav .nav-links a {
  color: rgba(255,255,255,0.75);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}
.landing-nav .nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.08); }
.landing-nav .nav-links a.active { color: var(--gold-400); }
.landing-nav .nav-login-btn {
  margin-left: var(--space-4);
  padding: 0.5rem 1.25rem;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: var(--white) !important;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}
.landing-nav .nav-login-btn:hover {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500)) !important;
  box-shadow: 0 4px 16px rgba(212,168,67,0.4);
  transform: translateY(-1px);
}
.landing-mobile-toggle { display: none; color: var(--white); font-size: 1.5rem; }

/* ═══════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  background: linear-gradient(165deg, var(--navy-900) 0%, var(--navy-800) 40%, var(--navy-700) 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding: var(--space-16) var(--space-8);
}
.hero::before {
  content: '';
  position: absolute; top: -50%; right: -20%;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(212,168,67,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute; bottom: -30%; left: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-content {
  max-width: 1200px; width: 100%;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-12); align-items: center;
  position: relative; z-index: 1;
}
.hero-text { animation: fadeInUp 0.8s ease; }
.hero-badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 0.4rem 1rem;
  background: rgba(212,168,67,0.12);
  color: var(--gold-400);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-6);
  border: 1px solid rgba(212,168,67,0.2);
}
.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: var(--space-5);
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: var(--font-size-md);
  color: var(--gray-400);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
  max-width: 520px;
}
.hero-actions { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.hero-visual { animation: fadeIn 1s ease 0.3s both; display: flex; justify-content: center; }
.hero-visual-card {
  width: 100%; max-width: 480px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(10px);
}
.hero-visual-card .visual-header {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.hero-visual-card .visual-dot { width: 12px; height: 12px; border-radius: 50%; }
.hero-visual-card .visual-dot.red { background: #FF5F57; }
.hero-visual-card .visual-dot.yellow { background: #FFBD2E; }
.hero-visual-card .visual-dot.green { background: #28C840; }
.hero-visual-card .visual-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
}
.hero-visual-card .visual-item-icon {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
}
.hero-visual-card .visual-item-text { color: var(--gray-300); font-size: var(--font-size-sm); }
.hero-visual-card .visual-item-sub { color: var(--gray-500); font-size: var(--font-size-xs); }

/* ═══════════════════════════════════════
   STATS SECTION
   ═══════════════════════════════════════ */
.landing-stats {
  padding: var(--space-16) var(--space-8);
  background: var(--white);
}
.landing-stats .stats-inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8); text-align: center;
}
.landing-stat-item { animation: fadeInUp 0.6s ease both; }
.landing-stat-item:nth-child(2) { animation-delay: 0.1s; }
.landing-stat-item:nth-child(3) { animation-delay: 0.2s; }
.landing-stat-item:nth-child(4) { animation-delay: 0.3s; }
.landing-stat-number {
  font-size: 2.5rem; font-weight: 800; color: var(--navy-800);
  line-height: 1; margin-bottom: var(--space-2);
}
.landing-stat-label { font-size: var(--font-size-sm); color: var(--gray-500); font-weight: var(--font-weight-medium); }

/* ═══════════════════════════════════════
   SECTION COMMON
   ═══════════════════════════════════════ */
.landing-section {
  padding: var(--space-20) var(--space-8);
}
.landing-section.bg-gray { background: var(--gray-50); }
.landing-section.bg-white { background: var(--white); }
.landing-section.bg-navy {
  background: linear-gradient(165deg, var(--navy-900), var(--navy-800));
  color: var(--white);
}
.section-header {
  text-align: center;
  max-width: 600px; margin: 0 auto var(--space-12);
}
.section-header .section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold-500);
  margin-bottom: var(--space-3);
}
.section-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}
.section-header p { color: var(--gray-500); font-size: var(--font-size-base); }

/* ═══════════════════════════════════════
   DOSEN SECTION
   ═══════════════════════════════════════ */
.dosen-grid {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.dosen-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all var(--transition-base);
  text-align: center;
}
.dosen-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-6px); }
.dosen-card .dosen-banner {
  height: 80px;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-600));
}
.dosen-card .dosen-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  color: var(--white); font-size: 1.5rem; font-weight: var(--font-weight-bold);
  display: flex; align-items: center; justify-content: center;
  margin: -36px auto 0; border: 4px solid var(--white);
  position: relative;
}
.dosen-card .dosen-info { padding: var(--space-4) var(--space-5) var(--space-5); }
.dosen-card .dosen-name { font-size: var(--font-size-base); font-weight: var(--font-weight-semibold); color: var(--gray-900); margin-bottom: 2px; }
.dosen-card .dosen-bidang { font-size: var(--font-size-xs); color: var(--gray-500); margin-bottom: var(--space-3); }
.dosen-card .dosen-publikasi {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: var(--font-size-xs); color: var(--gold-600);
  background: var(--gold-200); padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* ═══════════════════════════════════════
   MAHASISWA / TESTIMONI SECTION
   ═══════════════════════════════════════ */
.testimoni-grid {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.testimoni-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
}
.testimoni-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(212,168,67,0.3);
  transform: translateY(-4px);
}
.testimoni-card .testimoni-quote {
  font-size: var(--font-size-sm);
  color: var(--gray-300);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-5);
  font-style: italic;
}
.testimoni-card .testimoni-author {
  display: flex; align-items: center; gap: var(--space-3);
}
.testimoni-card .testimoni-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: var(--white); font-size: var(--font-size-sm); font-weight: var(--font-weight-bold);
  display: flex; align-items: center; justify-content: center;
}
.testimoni-card .testimoni-name { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); color: var(--white); }
.testimoni-card .testimoni-role { font-size: var(--font-size-xs); color: var(--gray-400); }

/* ═══════════════════════════════════════
   LANDING FOOTER
   ═══════════════════════════════════════ */
.landing-footer {
  background: var(--navy-900);
  padding: var(--space-12) var(--space-8) var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.05);
}
.landing-footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
}
.footer-brand .footer-brand-name { font-size: var(--font-size-md); font-weight: var(--font-weight-bold); color: var(--white); margin-bottom: var(--space-3); }
.footer-brand p { color: var(--gray-500); font-size: var(--font-size-sm); max-width: 300px; }
.footer-links h4 { color: var(--gray-300); font-size: var(--font-size-sm); margin-bottom: var(--space-4); }
.footer-links a {
  display: block; color: var(--gray-500); font-size: var(--font-size-sm);
  margin-bottom: var(--space-2); transition: color var(--transition-fast);
  text-decoration: none;
}
.footer-links a:hover { color: var(--gold-400); }
.landing-footer-bottom {
  max-width: 1100px; margin: var(--space-8) auto 0;
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255,255,255,0.05);
  text-align: center;
  font-size: var(--font-size-xs); color: var(--gray-600);
}

/* ═══════════════════════════════════════
   RESPONSIVE — LANDING
   ═══════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-visual-card { max-width: 380px; }
  .hero-title { font-size: var(--font-size-2xl); }
  .landing-stats .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .dosen-grid, .testimoni-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .landing-nav { padding: 0 var(--space-4); }
  .landing-nav .nav-links { display: none; }
  .landing-mobile-toggle { display: block; }
  .hero { padding: var(--space-12) var(--space-4); min-height: auto; padding-top: 120px; }
  .hero-title { font-size: var(--font-size-xl); }
  .hero-subtitle { font-size: var(--font-size-base); }
  .landing-stats .stats-inner { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
  .landing-stat-number { font-size: 2rem; }
  .dosen-grid, .testimoni-grid { grid-template-columns: 1fr; }
  .landing-footer-inner { grid-template-columns: 1fr; }
  .landing-section { padding: var(--space-12) var(--space-4); }
}