/* ==========================================================================
   Lumina Tech - Component & Layout Styles (style.css)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 100;
  transition: background-color var(--transition-normal),
              box-shadow var(--transition-normal),
              backdrop-filter var(--transition-normal);
}

.site-header.scrolled {
  background-color: var(--color-bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.brand-dot {
  width: 10px;
  height: 10px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--space-1) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-accent-gradient);
  transition: width var(--transition-normal);
}

.nav-link:hover {
  color: var(--color-text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Primary Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: none;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-normal),
              background var(--transition-normal),
              border-color var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: #090A0F;
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 242, 254, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-medium);
  transform: translateY(-2px);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  flex-direction: column;
  gap: 5px;
  z-index: 110;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.mobile-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer & Backdrop - Tersembunyi secara default di Desktop */
.mobile-nav {
  display: none;
}

.mobile-backdrop {
  display: none;
}

/* --------------------------------------------------------------------------
   2. Hero Section & 3D Canvas
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + var(--space-8));
  padding-bottom: var(--space-16);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: var(--space-8);
}

.hero-content {
  position: relative;
  z-index: 2;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.85rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.badge-pulse {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-accent-cyan);
  box-shadow: 0 0 10px var(--color-accent-cyan);
  animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-description {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin-bottom: var(--space-8);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero-features-preview {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
}

.preview-item {
  display: flex;
  flex-direction: column;
}

.preview-number {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.preview-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 3D Canvas Container */
.hero-canvas-wrapper {
  position: relative;
  width: 100%;
  height: 540px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

#three-canvas {
  width: 100%;
  height: 100%;
  outline: none;
  cursor: grab;
}

#three-canvas:active {
  cursor: grabbing;
}

.canvas-hint {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: rgba(9, 10, 15, 0.6);
  backdrop-filter: blur(8px);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   3. Section Common Header
   -------------------------------------------------------------------------- */
.section {
  padding: var(--space-20) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-16) auto;
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-mint);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   4. Features Section
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}

.feature-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal),
              border-color var(--transition-normal),
              box-shadow var(--transition-normal);
}

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

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 242, 254, 0.3);
  box-shadow: 0 12px 36px rgba(0, 242, 254, 0.12);
}

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

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-6);
}

.feature-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}

.feature-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   5. Interactive Showcase & Architecture
   -------------------------------------------------------------------------- */
.showcase-wrapper {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.showcase-preview {
  padding: var(--space-10);
  background: radial-gradient(circle at 10% 20%, rgba(0, 242, 254, 0.05), transparent 60%);
  border-right: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.code-mockup {
  background: #06070a;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
}

.mockup-header {
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.mockup-title {
  margin-left: var(--space-2);
  color: var(--color-text-muted);
}

.mockup-body {
  padding: var(--space-5);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.token-keyword { color: #ff7b72; }
.token-function { color: #d2a8ff; }
.token-string { color: #a5d6ff; }
.token-comment { color: var(--color-text-muted); font-style: italic; }

.showcase-info {
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.showcase-info h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-4);
}

.showcase-info p {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-6);
}

.showcase-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.showcase-checklist li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.check-icon {
  color: var(--color-accent-mint);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   6. Metrics / Stats Section
   -------------------------------------------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.stat-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  backdrop-filter: blur(12px);
  position: relative;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.stat-suffix {
  font-size: var(--font-size-2xl);
  color: var(--color-accent-cyan);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   7. Call to Action (CTA) & Newsletter Form
   -------------------------------------------------------------------------- */
.cta-box {
  position: relative;
  background: linear-gradient(135deg, rgba(17, 20, 32, 0.9), rgba(9, 10, 15, 0.95));
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-16) var(--space-8);
  text-align: center;
  box-shadow: 0 0 50px rgba(0, 242, 254, 0.15);
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(0, 242, 254, 0.12), transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
}

.cta-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto var(--space-8) auto;
}

.newsletter-form {
  display: flex;
  max-width: 480px;
  margin: 0 auto;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.04);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  transition: border-color var(--transition-normal);
}

.newsletter-form:focus-within {
  border-color: var(--color-accent-cyan);
}

.newsletter-input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.75rem var(--space-4);
  color: var(--color-text-primary);
  outline: none;
}

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

.form-feedback {
  margin-top: var(--space-3);
  font-size: var(--font-size-xs);
  min-height: 1.2rem;
  transition: opacity var(--transition-fast);
}

.form-feedback.success {
  color: var(--color-success);
}

.form-feedback.error {
  color: var(--color-error);
}

/* --------------------------------------------------------------------------
   8. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-16) 0 var(--space-8) 0;
  background: var(--color-bg-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  max-width: 300px;
}

.footer-column h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   9. Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-features-preview {
    justify-content: center;
  }

  .hero-canvas-wrapper {
    height: 420px;
  }

  .showcase-wrapper {
    grid-template-columns: 1fr;
  }

  .showcase-preview {
    border-right: none;
    border-bottom: 1px solid var(--color-border-subtle);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .nav-links,
  .header-actions {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  /* Mobile Backdrop Overlay */
  .mobile-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(9, 10, 15, 0.75);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .mobile-backdrop.is-active {
    display: block;
    opacity: 1;
    visibility: visible;
  }

  /* Mobile Drawer */
  .mobile-nav {
    display: flex;
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border-subtle);
    padding: calc(var(--nav-height) + var(--space-4)) var(--space-6) var(--space-8);
    flex-direction: column;
    justify-content: space-between;
    transition: right var(--transition-normal);
    z-index: 95;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.7);
  }

  .mobile-nav.is-open {
    right: 0;
  }

  .mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
  }

  .mobile-nav-link {
    font-size: var(--font-size-lg);
    font-weight: 600;
  }

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

  .newsletter-form {
    flex-direction: column;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}