:root {
  --bg: #0b1220;
  --bg-soft: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #60a5fa;
  --primary-600: #3b82f6;
  --accent: #a78bfa;
  --ring: 0 0 0 6px rgb(96 165 250 / 15%);
  --shadow-soft: 0 10px 30px rgb(0 0 0 / 25%);
}

/* Light theme */
html:not(.dark) {
  --bg: #f8fafc;
  --bg-soft: #ffffff;
  --card: #ffffff;
  --text: #0b1220;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --accent: #7c3aed;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 80% -10%, rgb(96 165 250 / 10%), transparent 60%),
              radial-gradient(800px 400px at -10% 10%, rgb(167 139 250 / 12%), transparent 50%),
              var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  background: var(--bg-soft);
  color: var(--text);
  padding: .75rem 1rem;
  border-radius: .75rem;
  box-shadow: var(--shadow-soft);
}
.skip-link:focus { left: 1rem; outline: none; box-shadow: var(--ring); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(140%) blur(10px);
  background: color-mix(in oklab, var(--bg), transparent 25%);
  border-bottom: 1px solid color-mix(in oklab, var(--text), transparent 92%);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 0;
}
.brand { display: inline-flex; align-items: center; gap: .6rem; color: inherit; text-decoration: none; }
.logo {
  display: inline-grid; place-items: center; width: 36px; height: 36px;
  border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white; font-weight: 700; letter-spacing: .5px;
}
.brand-text { font-weight: 600; }

.nav { display: flex; align-items: center; gap: 1rem; }
.nav-list { display: flex; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.nav-list a { color: var(--text); text-decoration: none; padding: .5rem .75rem; border-radius: .6rem; }
.nav-list a:hover { background: color-mix(in oklab, var(--text), transparent 92%); }

.nav-toggle { display: none; background: none; border: none; padding: .25rem; cursor: pointer; }
.nav-toggle .line { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; transition: transform .2s ease; }

.theme-toggle { background: none; border: 1px solid color-mix(in oklab, var(--text), transparent 85%); color: inherit; border-radius: .75rem; height: 40px; width: 44px; display: grid; place-items: center; cursor: pointer; }
.theme-toggle:hover { box-shadow: var(--ring); }
.icon-sun, .icon-moon { position: relative; display: block; width: 18px; height: 18px; }
.icon-sun { background: radial-gradient(circle at center, var(--text) 35%, transparent 36%); box-shadow: 0 0 0 4px var(--text) inset; border-radius: 999px; }
.icon-moon { border-radius: 999px; box-shadow: 8px 0 0 0 var(--text) inset; }
.icon-moon { display: none; }
html.dark .icon-sun { display: none; }
html.dark .icon-moon { display: block; }

/* Hero */
.hero { position: relative; padding: 6rem 0 4rem; }
.hero-inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; align-items: center; }
.hero-content h1 { margin: 0 0 .75rem; font-size: clamp(2rem, 3.2vw + 1rem, 3.25rem); letter-spacing: -.02em; }
.lead { color: var(--muted); font-size: 1.1rem; }
.hero-actions { display: flex; gap: .8rem; margin-top: 1.4rem; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; height: 44px; padding: 0 1.1rem; border-radius: .8rem; text-decoration: none; font-weight: 600; border: 1px solid transparent; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--accent)); color: white; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-secondary { background: color-mix(in oklab, var(--text), transparent 90%); color: var(--text); border-color: color-mix(in oklab, var(--text), transparent 85%); }
.btn-secondary:hover { background: color-mix(in oklab, var(--text), transparent 86%); }
.btn-ghost { background: transparent; color: var(--text); border-color: color-mix(in oklab, var(--text), transparent 85%); }
.btn-ghost:hover { background: color-mix(in oklab, var(--text), transparent 92%); }

.hero-image { display: grid; place-items: center; }
.image-dropzone {
  width: min(420px, 90%); aspect-ratio: 4/5; border-radius: 1.2rem;
  background: linear-gradient(180deg, color-mix(in oklab, var(--text), transparent 90%), transparent 30%) border-box,
              linear-gradient(135deg, var(--primary), var(--accent)) border-box;
  border: 2px dashed color-mix(in oklab, var(--text), transparent 70%);
  display: grid; place-items: center; color: var(--muted);
  position: relative; overflow: hidden; box-shadow: var(--shadow-soft);
}
.image-dropzone span { background: color-mix(in oklab, var(--bg), transparent 10%); padding: .5rem .9rem; border-radius: .6rem; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; mask-image: linear-gradient(to bottom, black, transparent 85%); }

/* Sections */
.section { padding: 4rem 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
.about .bullets { margin: 1rem 0 0; padding-left: 1rem; color: var(--muted); }
.about .bullets li { margin: .35rem 0; }

.about-card {
  border: 1px solid color-mix(in oklab, var(--text), transparent 88%);
  background: color-mix(in oklab, var(--bg-soft), transparent 0%);
  box-shadow: var(--shadow-soft);
  border-radius: 1rem;
  padding: 1.25rem;
}
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.stat { text-align: center; background: color-mix(in oklab, var(--text), transparent 96%); border-radius: .8rem; padding: 1rem; }
.stat-num { font-size: 1.6rem; font-weight: 700; }
.stat-label { color: var(--muted); font-size: .9rem; }
.note { color: var(--muted); margin-top: 1rem; }

/* Blog */
.blog h2, .about h2, .gallery h2, .contact h2 { margin: 0 0 1rem; font-size: 1.75rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card { border: 1px solid color-mix(in oklab, var(--text), transparent 88%); background: var(--card); border-radius: 1rem; transition: transform .15s ease, box-shadow .15s ease; }
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.card-link { display: flex; flex-direction: column; gap: .5rem; color: inherit; text-decoration: none; padding: 1rem; }
.card h3 { margin: 0; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); }
.meta { display: flex; justify-content: space-between; margin-top: .6rem; color: var(--muted); font-size: .9rem; }
.center { text-align: center; margin-top: 1.25rem; }

/* Gallery */
.gallery-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: .6rem; }
.gallery-item { aspect-ratio: 1/1; border-radius: .6rem; background: color-mix(in oklab, var(--text), transparent 94%); }
.gallery-item.placeholder { display: grid; place-items: center; color: var(--muted); border: 1px dashed color-mix(in oklab, var(--text), transparent 80%); }

/* Contact */
.contact-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.contact-actions { display: flex; flex-wrap: wrap; gap: .6rem; }
.chip { display: inline-flex; align-items: center; height: 36px; padding: 0 .8rem; border-radius: 999px; color: inherit; text-decoration: none; background: color-mix(in oklab, var(--text), transparent 92%); border: 1px solid color-mix(in oklab, var(--text), transparent 85%); }
.chip:hover { background: color-mix(in oklab, var(--text), transparent 88%); }

/* Footer */
.site-footer { border-top: 1px solid color-mix(in oklab, var(--text), transparent 90%); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; color: var(--muted); }
.footer-link { color: inherit; text-decoration: none; }
.footer-link:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .image-dropzone { width: min(520px, 100%); }
  .grid-2 { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 680px) {
  .nav-toggle { display: inline-block; }
  .nav-list { position: absolute; right: .75rem; top: 64px; background: var(--bg-soft); border: 1px solid color-mix(in oklab, var(--text), transparent 88%); border-radius: .9rem; padding: .5rem; display: none; box-shadow: var(--shadow-soft); }
  .nav-list.show { display: grid; gap: .25rem; }
  .cards { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-inner { flex-direction: column; align-items: flex-start; }
}

/* Smooth scroll */
html { scroll-behavior: smooth; }