/* ============================================
   THANH DINH — CV LANDING PAGE
   Warm Light Theme with Gold Accents
   ============================================ */

/* --- CSS Variables --- */
/* Palette mirrors cashback.getainow.io (oklch tokens converted to sRGB hex) */
:root {
  --bg-primary: #fdfcf9;
  --bg-secondary: #f5f1ea;
  --bg-card: #ffffff;
  --bg-card-hover: #fcf8f0;
  --text-primary: #1b150f;
  --text-secondary: #6e6155;
  --text-muted: #7a6e62;
  --accent-1: #935a00;
  --accent-2: #c0571e;
  --accent-3: #d79628;
  --gradient-primary: linear-gradient(135deg, #935a00, #c0571e);
  --gradient-accent: linear-gradient(135deg, #935a00, #d79628);
  --gradient-glow: linear-gradient(135deg, rgba(147, 90, 0, 0.08), rgba(192, 87, 30, 0.08));
  --border-color: #e3ddd3;
  --border-hover: rgba(147, 90, 0, 0.35);
  --shadow-sm: 0 2px 8px rgba(27, 21, 15, 0.06);
  --shadow-md: 0 8px 32px rgba(27, 21, 15, 0.08);
  --shadow-lg: 0 16px 64px rgba(27, 21, 15, 0.12);
  --shadow-glow: 0 0 40px rgba(147, 90, 0, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgba(147, 90, 0, 0.25);
  color: var(--text-primary);
}

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

img { max-width: 100%; display: block; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(253, 252, 249, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.nav.scrolled {
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  transition: width var(--transition);
}

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

.nav-links a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  color: #fff !important;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(147, 90, 0, 0.4);
}

.nav-cta-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-hover);
}

.nav-cta-outline:hover {
  border-color: var(--accent-1);
  color: var(--accent-1) !important;
  box-shadow: 0 4px 20px rgba(147, 90, 0, 0.2);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(27, 21, 15, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 21, 15, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.hero-glow-1 {
  width: 600px;
  height: 600px;
  top: -200px;
  right: -100px;
  background: rgba(147, 90, 0, 0.2);
}

.hero-glow-2 {
  width: 500px;
  height: 500px;
  bottom: -150px;
  left: -100px;
  background: rgba(192, 87, 30, 0.15);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 100px;
  background: rgba(147, 90, 0, 0.1);
  border: 1px solid rgba(147, 90, 0, 0.2);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-1);
  margin-bottom: 32px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00b894;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 184, 148, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(0, 184, 148, 0); }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 16px;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-family: var(--font-mono);
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 2rem;
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent-1);
  font-weight: 300;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-desc strong {
  color: var(--text-primary);
  font-weight: 600;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(147, 90, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(147, 90, 0, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--accent-1);
  background: rgba(147, 90, 0, 0.05);
  transform: translateY(-2px);
}

/* --- Stats --- */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 700px;
  margin: 0 auto;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-plus, .stat-suffix {
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* --- Scroll Indicator --- */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 0;
  right: 0;
  margin: 0 auto;
  width: fit-content;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
  box-sizing: border-box;
}

.mouse-wheel {
  width: 3px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: calc(50% - 1.5px);
  animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(10px); }
}

/* --- Sections --- */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 56px;
  letter-spacing: -1px;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent-1);
  display: block;
  margin-bottom: 8px;
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.about-text strong {
  color: var(--text-primary);
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.highlight-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

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

.highlight-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gradient-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent-1);
}

.highlight-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.highlight-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-1), var(--accent-2), transparent);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -40px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-1);
  z-index: 1;
  transition: all var(--transition);
}

.timeline-item:hover .timeline-marker {
  background: var(--accent-1);
  box-shadow: 0 0 20px rgba(147, 90, 0, 0.4);
}

.timeline-content {
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.timeline-content:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
}

.timeline-company {
  font-size: 0.9rem;
  color: var(--accent-2);
  font-weight: 500;
  margin-top: 2px;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  background: rgba(147, 90, 0, 0.08);
}

.timeline-list {
  list-style: none;
  padding: 0;
}

.timeline-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-list li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-1);
  font-size: 0.9rem;
}

.timeline-list strong {
  color: var(--text-primary);
  font-weight: 600;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.timeline-tags span {
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(147, 90, 0, 0.08);
  border: 1px solid rgba(147, 90, 0, 0.15);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent-1);
  font-weight: 500;
}

/* --- Projects --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

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

.project-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--gradient-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent-1);
}

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.project-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(147, 90, 0, 0.04);
}

.metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tags span {
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(192, 87, 30, 0.08);
  border: 1px solid rgba(192, 87, 30, 0.15);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--accent-2);
  font-weight: 500;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  box-shadow: 0 4px 14px rgba(147, 90, 0, 0.25);
}

.project-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(147, 90, 0, 0.4);
}

.project-link svg {
  transition: transform var(--transition);
}

.project-link:hover svg {
  transform: translate(2px, -2px);
}

/* A card swiped right must not widen the page: on phones that re-lays out the whole viewport mid-swipe */
#projects {
  overflow-x: hidden; /* fallback for Safari < 16 */
  overflow-x: clip;
}

/* Swipeable stack (enabled by script.js): every card shares one grid cell, so the stack is as tall as the tallest card */
.projects-grid.is-stack {
  grid-template-columns: 1fr;
  max-width: 600px;
  margin: 0 auto;
  padding-bottom: 28px;
}

.projects-grid.is-stack .project-card {
  grid-area: 1 / 1;
  transform-origin: 50% 100%;
  box-shadow: var(--shadow-md);
  cursor: grab;
  user-select: none;
  touch-action: pan-y;
}

.projects-grid.is-stack .project-card.dragging {
  cursor: grabbing;
  transition: none;
}

.project-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 16px;
}

.project-controls[hidden] {
  display: none;
}

.project-nav {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--accent-1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
}

.project-nav:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.project-nav:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
}

.project-counter {
  min-width: 5ch;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.project-hint {
  flex-basis: 100%;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (prefers-reduced-motion: reduce) {
  .projects-grid.is-stack .project-card {
    transition: none;
  }
}

/* --- Skills --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.skill-category {
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.skill-category:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.skill-category-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.skill-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition);
}

.skill-item:hover {
  color: var(--text-primary);
}

.skill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-1);
  flex-shrink: 0;
}

/* --- Education --- */
.education-card {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  max-width: 600px;
}

.edu-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--gradient-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-1);
  flex-shrink: 0;
}

.education-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.edu-school {
  color: var(--accent-2);
  font-size: 0.9rem;
  font-weight: 500;
}

.edu-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Contact --- */
.contact-container {
  text-align: center;
}

.contact-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 48px;
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 750px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
  color: var(--accent-1);
}

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

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.contact-value {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  word-break: break-all;
}

/* --- Footer --- */
.footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
}

.footer p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer strong {
  color: var(--text-primary);
}

.footer-sub {
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* --- Animations --- */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    /* Explicit height: .nav's backdrop-filter makes it the containing block, so bottom: 0 collapsed the panel to 0px */
    height: calc(100vh - var(--nav-height));
    height: calc(100dvh - var(--nav-height));
    background: rgba(253, 252, 249, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    /* Clipped in place rather than parked off-screen: iOS lets a left swipe drag the page out to an off-screen panel */
    clip-path: inset(0 0 0 100%);
    transition: clip-path var(--transition);
  }

  .nav-links.open {
    clip-path: inset(0);
  }

  .nav-links a {
    font-size: 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    letter-spacing: -1px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-highlights {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .contact-links {
    grid-template-columns: 1fr;
  }

  .timeline {
    padding-left: 30px;
  }

  .timeline-marker {
    left: -30px;
    width: 14px;
    height: 14px;
  }

  .timeline-header {
    flex-direction: column;
  }

  .scroll-indicator {
    display: none;
  }

  .section {
    padding: 70px 0;
  }

  .project-metrics {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .metric-value {
    font-size: 0.95rem;
  }

  .education-card {
    flex-direction: column;
    text-align: center;
  }
}

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

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

  .stat-number {
    font-size: 1.6rem;
  }

  .project-metrics {
    grid-template-columns: 1fr;
  }

  .skill-items {
    grid-template-columns: 1fr;
  }
}