/* Base styles */
:root {
  --bg: #0b0e14;
  --elev: #11151f;
  --text: #e6e8ee;
  --muted: #93a1b3;
  --primary: #8b5cf6;
  --accent: #22d3ee;
  --card: #0f1422;
  --ring: rgba(139, 92, 246, 0.4);
}
:root.light {
  --bg: #f9fafb;
  --elev: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #7c3aed;
  --accent: #0891b2;
  --card: #ffffff;
  --ring: rgba(124, 58, 237, 0.25);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, 'Apple Color Emoji', 'Segoe UI Emoji';
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1100px, 92%); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,14,20,0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
:root.light .site-header {
  background: rgba(255,255,255,0.7);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0;
}
.brand { display: flex; gap: 10px; align-items: center; font-weight: 700; color: var(--text); }
.brand-logo { width: 28px; height: 28px; }
.nav { display: flex; gap: 14px; align-items: center; }
.nav a { color: var(--text); opacity: 0.9; }
.icon-btn {
  background: transparent; border: 1px solid rgba(255,255,255,0.12);
  padding: 8px 10px; border-radius: 14px; cursor: pointer; color: var(--text);
}
:root.light .icon-btn { border-color: rgba(0,0,0,0.1); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; border-radius: 14px; padding: 12px 16px; border: 1px solid transparent;
  font-weight: 600; cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,0.14); color: var(--text); }
:root.light .btn-ghost { border-color: rgba(0,0,0,0.12); }

/* Hero */
.hero { padding: 48px 0 12px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; align-items: center; }
.hero-copy h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.1; margin: 0 0 8px; }
.accent { color: var(--accent); }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 16px; }
.hero-cta { display: flex; gap: 12px; margin: 12px 0 10px; }
.meta { list-style: none; padding: 0; margin: 10px 0 0; color: var(--muted); display: grid; gap: 6px; }
.hero-card .card { overflow: hidden; border: 1px solid rgba(255,255,255,0.08); border-radius: 18px; background: var(--card); }
.card-cover { aspect-ratio: 16/10; object-fit: cover; background: linear-gradient(135deg, #1f2937, #0b0e14); }
.card-body { padding: 16px; }
.checklist { margin: 0; padding-left: 18px; }
.checklist li { margin: 8px 0; }

/* Sections */
.section { padding: 40px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.section-head h2 { margin: 0 0 8px; font-size: clamp(24px, 4vw, 32px); }
.section-actions { display: flex; gap: 8px; }

/* Chips */
.chip { border: 1px solid rgba(255,255,255,0.14); padding: 8px 12px; border-radius: 999px; background: transparent; color: var(--text); cursor: pointer; }
.chip-active, .chip:hover { border-color: var(--ring); box-shadow: 0 0 0 3px var(--ring); }

/* Grid */
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 18px; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr; }
}

/* Project card */
.project {
  display: grid; grid-template-rows: auto 1fr auto;
  border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; background: var(--card);
  overflow: hidden;
}
.project .thumb { aspect-ratio: 16/10; object-fit: cover; background: #111827; }
.project .body { padding: 14px; display: grid; gap: 10px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-size: 12px; padding: 4px 8px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.14); color: var(--muted); }
.actions { display: flex; gap: 10px; justify-content: flex-end; padding: 12px 14px; border-top: 1px solid rgba(255,255,255,0.08); }

/* About */
.prose { color: var(--text); }
.prose h3, .prose h2 { margin-top: 22px; }
.prose p { color: var(--text); opacity: 0.9; }
.inline-link { font-weight: 600; }

/* Form */
.form { padding: 16px; border-radius: 16px; background: var(--card); border: 1px solid rgba(255,255,255,0.08); }
.form-row { display: grid; gap: 6px; margin-bottom: 12px; }
input, textarea {
  background: var(--elev); border: 1px solid rgba(255,255,255,0.12);
  color: var(--text); padding: 12px 12px; border-radius: 12px; outline: none;
}
input:focus, textarea:focus { border-color: var(--ring); box-shadow: 0 0 0 3px var(--ring); }
.error { color: #fca5a5; min-height: 16px; }
.status { margin-left: 10px; color: var(--muted); }
.tiny { font-size: 12px; }

/* Footer */
.site-footer { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.socials { display: flex; gap: 14px; align-items: center; }
.back-to-top { color: var(--muted); }

/* Light adjustments */
:root.light .chip, :root.light .project, :root.light .form, :root.light .card {
  border-color: rgba(0,0,0,0.08);
}
:root.light input, :root.light textarea { background: #fff; border-color: rgba(0,0,0,0.12); }