/* ===== KelasKu — Landing page (tema cream profesional, terang + gelap) ===== */
html { scroll-behavior: smooth; }

#landingScreen {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

/* ===== Nav ===== */
.lp-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 60;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--primary-border-soft);
}
.lp-nav-inner {
  max-width: 1150px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.lp-logo {
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.3px;
}
.lp-logo span {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--primary-deep);
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  padding: 2px 9px;
  border-radius: 999px;
}
.lp-nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}
.lp-nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.15s;
}
.lp-nav-links a:hover { color: var(--text); }
.lp-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--primary-border);
  color: var(--text);
  font-size: 18px;
  border-radius: 8px;
  padding: 5px 11px;
  cursor: pointer;
}
.lp-menu {
  display: none;
  padding: 10px 20px 16px;
  border-top: 1px solid var(--primary-border-soft);
  flex-direction: column;
  gap: 6px;
}
.lp-menu.open { display: flex; }
.lp-menu a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 9px 6px;
  font-weight: 500;
  border-radius: 8px;
}
.lp-menu a:hover { background: var(--th-bg); color: var(--text); }
.lp-menu .theme-btn { align-self: flex-start; margin-top: 4px; }

/* ===== Hero ===== */
.lp-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 20px 90px;
  overflow: hidden;
  background: var(--hero-bg);
}
.lp-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.45;
  pointer-events: none;
  animation: lp-float 9s ease-in-out infinite;
}
.lp-blob-1 { width: 380px; height: 380px; background: var(--blob-1); top: -80px; left: -60px; }
.lp-blob-2 { width: 320px; height: 320px; background: var(--blob-2); bottom: -60px; right: -40px; animation-delay: -3s; }
.lp-blob-3 { width: 220px; height: 220px; background: var(--blob-3); top: 45%; left: 72%; animation-delay: -6s; opacity: 0.3; }
@keyframes lp-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(24px, -30px) scale(1.08); }
  66% { transform: translate(-20px, 22px) scale(0.95); }
}
.lp-float {
  position: absolute;
  font-size: 34px;
  color: var(--float-color);
  opacity: 0.85;
  animation: lp-drift 7s ease-in-out infinite;
  pointer-events: none;
  user-select: none;
}
.lp-float-1 { top: 20%; left: 12%; animation-delay: 0s; }
.lp-float-2 { top: 62%; left: 8%; animation-delay: -2.2s; font-size: 28px; }
.lp-float-3 { top: 18%; right: 12%; animation-delay: -4s; }
.lp-float-4 { top: 58%; right: 9%; animation-delay: -1.4s; font-size: 30px; }
@keyframes lp-drift {
  0%, 100% { transform: translateY(0) rotate(-4deg); }
  50% { transform: translateY(-26px) rotate(6deg); }
}
.lp-hero-inner { position: relative; max-width: 860px; }
.lp-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-deep);
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.lp-hero h1 {
  font-size: clamp(2.1rem, 5.6vw, 3.9rem);
  line-height: 1.12;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 18px;
}
.lp-grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.lp-rot { display: inline-block; min-width: 1.2em; }
.lp-sub {
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 30px;
  line-height: 1.6;
}
.lp-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}
.btn-lg { padding: 13px 26px; font-size: 15.5px; border-radius: 12px; }
.lp-ghost-dark {
  background: var(--ghost-bg);
  color: var(--text-med);
  border-color: var(--primary-border-soft);
}
.lp-ghost-dark:hover { background: var(--surface); color: var(--text); }
.lp-chip-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}
.lp-chip {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-med);
  background: var(--chip-bg);
  border: 1px solid var(--primary-border-soft);
  padding: 7px 14px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

/* ===== Stats ===== */
.lp-section { padding: 70px 20px; max-width: 1150px; margin: 0 auto; }
.lp-stats-section { padding-top: 20px; padding-bottom: 20px; }
.lp-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
}
.lp-stat {
  background: var(--card-glass);
  border: 1px solid var(--primary-border-soft);
  border-radius: 16px;
  padding: 22px 16px;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}
.lp-stat:hover {
  transform: translateY(-4px);
  border-color: var(--primary-border-strong);
  background: var(--surface);
}
.lp-stat-icon { font-size: 28px; color: var(--primary); margin-bottom: 8px; }
.lp-stat-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}
.lp-stat-num .lp-grad { font-size: inherit; }
.lp-stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== Marquee ===== */
.lp-marquee {
  overflow: hidden;
  border-top: 1px solid var(--primary-border-soft);
  border-bottom: 1px solid var(--primary-border-soft);
  background: var(--marquee-bg);
  padding: 15px 0;
}
.lp-marquee-track {
  display: flex;
  gap: 42px;
  width: max-content;
  animation: lp-scroll 28s linear infinite;
}
.lp-marquee:hover .lp-marquee-track { animation-play-state: paused; }
.lp-marquee-track span {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 42px;
}
.lp-marquee-track span::after {
  content: "\f005";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--star-color);
  font-size: 12px;
}
@keyframes lp-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== Fitur ===== */
.lp-section-title {
  text-align: center;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.lp-section-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 44px;
  line-height: 1.6;
}
.lp-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 18px;
}
.lp-feature {
  position: relative;
  background: var(--card-glass);
  border: 1px solid var(--primary-border-soft);
  border-radius: 16px;
  padding: 26px 22px;
  overflow: hidden;
  transition: transform 0.22s, border-color 0.22s, background 0.22s;
}
.lp-feature::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 0%), var(--spotlight), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}
.lp-feature:hover {
  transform: translateY(-6px);
  border-color: var(--primary-border-strong);
  background: var(--surface);
}
.lp-feature:hover::before { opacity: 1; }
.lp-feature-icon {
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--primary-deep);
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  border-radius: 14px;
  margin-bottom: 16px;
  transition: transform 0.22s;
}
.lp-feature:hover .lp-feature-icon { transform: scale(1.1) rotate(-4deg); }
.lp-feature h3 { font-size: 17.5px; color: var(--text); margin-bottom: 8px; }
.lp-feature p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* ===== CTA banner ===== */
.lp-cta-banner {
  max-width: 900px;
  margin: 30px auto 0;
  border-radius: 20px;
  padding: 48px 28px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 100% at 50% 0%, rgba(255, 255, 255, 0.18), transparent 65%),
    linear-gradient(120deg, #5d4632, #75543a 50%, #8a5a38);
  border: 1px solid var(--primary-border-strong);
}
.lp-cta-banner h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: #fff;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.4px;
}
.lp-cta-banner h2 i { color: #f6d186; margin-left: 4px; }
.lp-hero h1 i { color: var(--accent2); margin-left: 4px; }
.lp-cta-banner p { color: #ecdcc4; margin-bottom: 24px; font-size: 15px; }

/* ===== Footer ===== */
.lp-footer {
  margin-top: 60px;
  border-top: 1px solid var(--primary-border-soft);
  background: var(--footer-bg);
  color: var(--text-muted);
  font-size: 14px;
}
.lp-footer-grid {
  max-width: 1150px;
  margin: 0 auto;
  padding: 44px 20px 36px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
}
.lp-footer-logo {
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.lp-footer-logo i { color: var(--primary); }
.lp-footer-brand p {
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 340px;
  margin: 0;
}
.lp-footer-col {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.lp-footer-col h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-soft);
  margin: 0 0 6px;
}
.lp-footer-col a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s;
  width: fit-content;
}
.lp-footer-col a:hover { color: var(--text); }
.lp-footer-col span {
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.6;
}
.lp-footer-col span i { color: var(--primary); width: 16px; text-align: center; }
.lp-footer-bar {
  border-top: 1px solid var(--primary-border-soft);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  max-width: 1150px;
  margin: 0 auto;
  font-size: 12.5px;
  color: var(--text-soft);
}
.lp-footer-bar i.fa-heart { color: var(--accent2); margin: 0 3px; }
@media (max-width: 760px) {
  .lp-footer-grid { grid-template-columns: 1fr; gap: 26px; padding-top: 36px; }
  .lp-footer-bar { justify-content: center; text-align: center; }
}

/* ===== Reveal animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.lp-stats .lp-stat.reveal { transition-delay: calc(var(--i, 0) * 0.08s); }
.lp-features .lp-feature.reveal { transition-delay: calc(var(--i, 0) * 0.07s); }

/* ===== Tombol tutup login ===== */
.login-close {
  position: absolute;
  top: 14px; right: 14px;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--text-med);
  width: 34px; height: 34px;
  border-radius: 50%;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.15s;
}
.login-close:hover { background: var(--primary-border-soft); }

/* ===== Responsive ===== */
@media (max-width: 760px) {
  .lp-nav-links { display: none; }
  .lp-menu-btn { display: inline-block; }
  .lp-hero { padding-top: 100px; }
  .lp-float { display: none; }
  .lp-cta .btn { width: 100%; max-width: 340px; }
}