/**
 * Apple Design System & Visual Foundations
 * Inspired by apple.com: SF Pro aesthetics, micro-interactions, liquid frosted glass
 */

:root {
  /* Color Palette - Apple Dark (Default) */
  --bg-primary: #000000;
  --bg-secondary: #0d0d0f;
  --bg-tertiary: #16161a;
  --bg-card: rgba(26, 26, 30, 0.72);
  --bg-card-hover: rgba(36, 36, 42, 0.85);
  --bg-glass: rgba(18, 18, 22, 0.78);
  --bg-glass-elevated: rgba(30, 30, 36, 0.88);

  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;
  --text-accent: #2997ff;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(255, 255, 255, 0.16);
  --border-glow: rgba(41, 151, 255, 0.35);

  /* Accents */
  --apple-blue: #2997ff;
  --apple-blue-hover: #147ce5;
  --apple-green: #30d158;
  --apple-purple: #bf5af2;
  --apple-indigo: #5e5ce6;
  --apple-orange: #ff9f0a;
  --apple-teal: #64d2ff;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Glassmorphism */
  --blur-glass: blur(24px) saturate(190%);
  --blur-subtle: blur(12px) saturate(150%);
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-elevated: 0 16px 40px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--border-subtle);
  --shadow-glow: 0 0 35px rgba(41, 151, 255, 0.22);

  /* Transitions */
  --transition-smooth: all 0.36s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 9999px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8e8ed;
  --bg-card: rgba(255, 255, 255, 0.82);
  --bg-card-hover: rgba(255, 255, 255, 0.96);
  --bg-glass: rgba(245, 245, 247, 0.82);
  --bg-glass-elevated: rgba(255, 255, 255, 0.94);

  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --text-accent: #0071e3;

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-highlight: rgba(0, 0, 0, 0.16);
  --border-glow: rgba(0, 113, 227, 0.3);

  --apple-blue: #0071e3;
  --apple-blue-hover: #0077ed;
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-elevated: 0 16px 40px rgba(0, 0, 0, 0.08), 0 0 0 1px var(--border-subtle);
  --shadow-glow: 0 0 35px rgba(0, 113, 227, 0.15);
}

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

html {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.015em;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Apple Typography & Gradient Text */
.gradient-text {
  background: linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0.72) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .gradient-text {
  background: linear-gradient(180deg, #1d1d1f 0%, #434347 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-blue {
  background: linear-gradient(135deg, var(--apple-blue) 0%, var(--apple-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-green {
  background: linear-gradient(135deg, var(--apple-green) 0%, var(--apple-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title {
  font-size: clamp(2.8rem, 6.5vw, 5.2rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 680px;
  margin: 0 auto 48px auto;
  line-height: 1.45;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Apple Navigation Bar */
.apple-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 54px;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: var(--transition-smooth);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.02em;
}

.nav-brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--apple-blue), var(--apple-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(41, 151, 255, 0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 400;
  transition: var(--transition-fast);
  position: relative;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-fast);
}

.btn-pill-primary {
  background: var(--apple-blue);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(41, 151, 255, 0.35);
}

.btn-pill-primary:hover {
  background: var(--apple-blue-hover);
  transform: scale(1.02);
}

.btn-pill-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

[data-theme="light"] .btn-pill-secondary {
  background: rgba(0, 0, 0, 0.05);
}

.btn-pill-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: scale(1.02);
}

.toggle-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 13px;
  transition: var(--transition-fast);
}

.toggle-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.12);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
}

/* Badge & Pills */
.apple-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  backdrop-filter: var(--blur-subtle);
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--apple-green);
  box-shadow: 0 0 10px var(--apple-green);
  display: inline-block;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 130px 0 90px;
  text-align: center;
  overflow: hidden;
}

.hero-glow-ambient {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 650px;
  height: 380px;
  background: radial-gradient(circle, rgba(41, 151, 255, 0.18) 0%, rgba(191, 90, 242, 0.1) 50%, transparent 75%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-lead {
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.45;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.btn-hero {
  padding: 13px 28px;
  font-size: 15px;
  font-weight: 600;
}

/* Apple Key Metrics Bar */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin: 0 auto;
  max-width: 1080px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  backdrop-filter: var(--blur-subtle);
  -webkit-backdrop-filter: var(--blur-subtle);
  transition: var(--transition-smooth);
}

.metric-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-3px);
  box-shadow: var(--shadow-subtle);
}

.metric-number {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 8px;
  background: linear-gradient(180deg, #ffffff 0%, var(--apple-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .metric-number {
  background: linear-gradient(180deg, #1d1d1f 0%, var(--apple-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Apple Bento Grid Sections */
.section {
  padding: 100px 0;
  position: relative;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.bento-col-12 { grid-column: span 12; }
.bento-col-8 { grid-column: span 8; }
.bento-col-6 { grid-column: span 6; }
.bento-col-4 { grid-column: span 4; }

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px;
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--blur-subtle);
  -webkit-backdrop-filter: var(--blur-subtle);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
}

.bento-card:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.bento-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--apple-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.bento-title {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.25;
}

.bento-desc {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 24px;
}

/* Timeline Components */
.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}

.timeline-list::before {
  content: "";
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 20px;
  width: 2px;
  background: var(--border-subtle);
}

.timeline-item {
  display: flex;
  gap: 24px;
  position: relative;
}

.timeline-marker {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 2px solid var(--border-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--apple-blue);
  font-size: 16px;
  flex-shrink: 0;
  z-index: 1;
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  flex-grow: 1;
  transition: var(--transition-smooth);
}

.timeline-content:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.timeline-role {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.timeline-company {
  font-size: 14px;
  color: var(--apple-blue);
  font-weight: 500;
}

.timeline-period {
  font-size: 12px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.05);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.timeline-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-bullets li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  position: relative;
  padding-left: 18px;
}

.timeline-bullets li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--apple-blue);
  font-weight: bold;
}

/* Certificate Gallery Cards */
.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.cert-card:hover {
  border-color: var(--apple-blue);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.cert-image-wrap {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.cert-card:hover .cert-image {
  transform: scale(1.04);
}

.cert-meta {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-grow: 1;
}

.cert-issuer {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--apple-blue);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.cert-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.cert-year {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: auto;
}

/* Subtle Technology Logo Marquee */
.tech-marquee-section {
  padding: 36px 0;
  overflow: hidden;
  position: relative;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.tech-marquee-title {
  text-align: center;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  margin-bottom: 20px;
  font-weight: 600;
}

.tech-marquee-track-wrap {
  display: flex;
  overflow: hidden;
  user-select: none;
  width: 100%;
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}

.tech-marquee-track {
  display: flex;
  align-items: center;
  gap: 44px;
  flex-shrink: 0;
  animation: techMarqueeScroll 45s linear infinite;
  padding: 4px 22px;
}

.tech-marquee-track:hover {
  animation-play-state: paused;
}

@keyframes techMarqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.tech-icon-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  opacity: 0.45;
  transition: opacity 0.25s ease, transform 0.25s ease, color 0.25s ease;
  cursor: default;
  white-space: nowrap;
}

.tech-icon-item:hover {
  opacity: 1;
  color: var(--text-primary);
  transform: translateY(-2px);
}

.tech-icon-svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.tech-icon-svg path,
.tech-icon-svg circle,
.tech-icon-svg rect,
.tech-icon-svg polygon {
  fill: currentColor;
}

.tech-icon-name {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* Blueprint Interactive Image Clickable Trigger */
.blueprint-interactive-card {
  cursor: pointer;
  position: relative;
  transition: var(--transition-smooth);
}

.blueprint-interactive-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4), 0 0 25px rgba(41, 151, 255, 0.3);
}

.blueprint-zoom-hint {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(16, 16, 20, 0.85);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--apple-blue);
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  pointer-events: none;
  transition: var(--transition-fast);
}

[data-theme="light"] .blueprint-zoom-hint {
  background: rgba(255, 255, 255, 0.9);
}

.blueprint-interactive-card:hover .blueprint-zoom-hint {
  transform: scale(1.05);
  background: var(--apple-blue);
  color: #fff;
  border-color: var(--apple-blue);
}

/* Large Blueprint Modal Lightbox */
.blueprint-modal-dialog {
  max-width: 95vw !important;
  width: 95vw !important;
  max-height: 94vh !important;
  height: 94vh !important;
  padding: 20px 24px !important;
  display: flex !important;
  flex-direction: column !important;
}

.blueprint-modal-viewer {
  flex-grow: 1;
  width: 100%;
  overflow: auto;
  border-radius: var(--radius-lg);
  background: #0d0d11;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 1px solid var(--border-subtle);
  padding: 16px;
}

.blueprint-modal-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: center center;
}

.blueprint-modal-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 4px 0;
  flex-wrap: wrap;
  gap: 12px;
}

/* Modal Dialog for Certificates / Detail view */
.apple-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(16px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.apple-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.apple-modal {
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  transform: scale(0.96) translateY(12px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.apple-modal-backdrop.open .apple-modal {
  transform: scale(1) translateY(0);
}

.apple-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.apple-modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Footer */
.apple-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 40px;
  background: var(--bg-secondary);
  font-size: 13px;
  color: var(--text-tertiary);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 30px;
}

.footer-brand {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-social-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-social-link:hover {
  color: var(--apple-blue);
}

.footer-copy {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .bento-col-8, .bento-col-6, .bento-col-4 {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 54px;
    left: 0;
    width: 100%;
    background: var(--bg-glass-elevated);
    backdrop-filter: var(--blur-glass);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links.open {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-section {
    padding: 100px 0 60px;
  }

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

@media (max-width: 480px) {
  .metrics-strip {
    grid-template-columns: 1fr;
  }
}