/* ===== Light-first minimal ===== */
:root {
  --bg: #fcfcfc;
  --bg-elevated: #ffffff;
  --text: #0c0c0d;
  --text-muted: #6b6b70;
  --accent: #0c0c0d;
  --accent-soft: rgba(12, 12, 13, 0.06);
  --border: rgba(0, 0, 0, 0.06);
  --radius: 8px;
  --font-sans: 'Syne', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration: 0.45s;
}

[data-theme="dark"] {
  --bg: #0a0a0b;
  --bg-elevated: #111113;
  --text: #e4e4e7;
  --text-muted: #71717a;
  --accent: #e4e4e7;
  --accent-soft: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.06);
}

@media (prefers-reduced-motion: reduce) {
  :root { --duration: 0.01s; }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ===== View Transitions ===== */
@supports (view-transition-name: none) {
  ::view-transition-old(root) { animation: vt-out 0.25s var(--ease-in-out); }
  ::view-transition-new(root) { animation: vt-in 0.4s var(--ease-out-expo); }
}
@keyframes vt-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes vt-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* ===== Background glows (subtle) ===== */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  animation: glow-float 25s var(--ease-in-out) infinite;
}

.bg-glow--1 {
  width: 50vmax;
  height: 50vmax;
  background: radial-gradient(circle, rgba(12, 12, 13, 0.04) 0%, transparent 70%);
  top: -15%;
  right: -5%;
}

.bg-glow--2 {
  width: 35vmax;
  height: 35vmax;
  background: radial-gradient(circle, rgba(12, 12, 13, 0.03) 0%, transparent 70%);
  bottom: -10%;
  left: -5%;
  animation-delay: -10s;
}

[data-theme="dark"] .bg-glow--1 {
  background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
}

[data-theme="dark"] .bg-glow--2 {
  background: radial-gradient(circle, rgba(255, 255, 255, 0.02) 0%, transparent 70%);
}

@keyframes glow-float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(4%, -6%); }
}

/* ===== Layout ===== */
.header, main, .footer {
  position: relative;
  z-index: 2;
}

/* ===== Header ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: transform var(--duration) var(--ease-out-expo);
}

.logo-dot {
  color: var(--text-muted);
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--duration), transform var(--duration) var(--ease-out-expo);
}

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

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: transform var(--duration) var(--ease-out-expo), color var(--duration), border-color var(--duration);
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--border);
}

.theme-icon--moon { display: none; }
[data-theme="dark"] .theme-icon--sun { display: none; }
[data-theme="dark"] .theme-icon--moon { display: block; }

/* ===== Hero ===== */
.hero {
  min-height: 88dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem 2rem 6rem;
  max-width: 720px;
  margin: 0 auto;
}

.hero-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1.25rem;
}

.hero-label-line {
  width: 24px;
  height: 1px;
  background: var(--text-muted);
  opacity: 0.6;
}

.hero-title {
  font-size: clamp(2.75rem, 8vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
}

.hero-title-accent {
  color: var(--text);
  position: relative;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 420px;
  margin-bottom: 2.25rem;
  line-height: 1.65;
}

.hero-cta {
  margin-bottom: 4rem;
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--bg);
  background: var(--text);
  border-radius: var(--radius);
  transition: transform var(--duration) var(--ease-out-expo), opacity var(--duration), color var(--duration), background var(--duration);
}

.btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn-arrow {
  width: 16px;
  height: 16px;
  transition: transform var(--duration) var(--ease-out-expo);
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* ===== Scroll hint ===== */
.hero-scroll {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-scroll-line {
  width: 1px;
  height: 32px;
  background: var(--text-muted);
  opacity: 0.4;
  border-radius: 1px;
  animation: scroll-pulse 2.2s var(--ease-in-out) infinite;
}

@keyframes scroll-pulse {
  0%, 100% { transform: scaleY(1); opacity: 0.4; }
  50% { transform: scaleY(0.2); opacity: 0.2; }
}

/* ===== Reveal on scroll ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

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

[data-reveal].hero-title { transition-delay: 0.05s; }
[data-reveal].hero-desc { transition-delay: 0.12s; }
[data-reveal].hero-cta { transition-delay: 0.18s; }
[data-reveal].hero-scroll { transition-delay: 0.25s; }

/* Stagger for cards and work items */
.about-card:nth-child(1)[data-reveal] { transition-delay: 0s; }
.about-card:nth-child(2)[data-reveal] { transition-delay: 0.06s; }
.about-card:nth-child(3)[data-reveal] { transition-delay: 0.12s; }
.work-item:nth-child(1)[data-reveal] { transition-delay: 0s; }
.work-item:nth-child(2)[data-reveal] { transition-delay: 0.05s; }
.work-item:nth-child(3)[data-reveal] { transition-delay: 0.1s; }

/* ===== Sections ===== */
.section {
  padding: 5rem 2rem;
  max-width: 720px;
  margin: 0 auto;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 2.5rem;
}

/* ===== About cards ===== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.about-card {
  padding: 1.5rem 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transform-origin: center center;
  transition: transform var(--duration) var(--ease-out-expo), border-color var(--duration), background var(--duration);
}

.about-card:hover {
  border-color: var(--accent-soft);
  background: color-mix(in srgb, var(--text) 2%, var(--bg-elevated));
}

.about-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}

.about-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===== Work list ===== */
.work-list {
  display: flex;
  flex-direction: column;
}

.work-item {
  border-bottom: 1px solid var(--border);
}

.work-link {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem 0;
  text-decoration: none;
  color: inherit;
  transition: padding-left var(--duration) var(--ease-out-expo), background var(--duration);
}

.work-link:hover {
  padding-left: 0.5rem;
  background: var(--accent-soft);
}

.work-item-title {
  font-size: 1.1rem;
  font-weight: 600;
  flex: 1;
  transition: color var(--duration);
}

.work-link:hover .work-item-title {
  color: var(--text-muted);
}

.work-item-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.work-item-arrow {
  font-size: 1.25rem;
  color: var(--text-muted);
  transition: transform var(--duration) var(--ease-out-expo), color var(--duration);
}

.work-link:hover .work-item-arrow {
  transform: translateX(4px);
  color: var(--text);
}

/* ===== Contact ===== */
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
}

.contact-link {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--duration), transform var(--duration) var(--ease-out-expo);
}

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

/* ===== Footer ===== */
.footer {
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* ===== Magnetic ===== */
[data-magnetic] {
  display: inline-block;
  transition: transform var(--duration) var(--ease-out-expo);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .header { padding: 1rem 1.25rem; }
  .nav { display: none; }
  .hero { padding: 3.5rem 1.25rem 4rem; }
  .section { padding: 3.5rem 1.25rem; }
  .work-link { flex-wrap: wrap; }
  .work-item-meta { width: 100%; margin-left: 0; }
}