/* ============================================================
   Design system — dark-first, gradient signature, Space Grotesk
   display type. Light theme via prefers-color-scheme override.
   ============================================================ */

@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/static/fonts/space-grotesk-400.woff2") format("woff2");
}
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/static/fonts/space-grotesk-500.woff2") format("woff2");
}
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/static/fonts/space-grotesk-700.woff2") format("woff2");
}

:root {
  --bg: #0b0b12;
  --surface: #14141f;
  --surface-2: #1a1a29;
  --border: #26263a;
  --fg: #ecedf3;
  --muted: #a0a1b5;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --pink: #f472b6;
  --gradient: linear-gradient(100deg, var(--cyan), var(--violet) 55%, var(--pink));
  --font-display: "Space Grotesk", -apple-system, "Segoe UI", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;
  --max: 1120px;
  --prose: 46rem;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafc;
    --surface: #ffffff;
    --surface-2: #f2f2f8;
    --border: #e3e3ee;
    --fg: #17172a;
    --muted: #5d5e75;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--violet); color: var(--bg); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }

.site-nav { display: flex; gap: 1.4rem; flex-wrap: wrap; }
.site-nav a {
  position: relative;
  color: var(--muted);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.2rem 0;
}
.site-nav a:hover { color: var(--fg); text-decoration: none; }
.site-nav a.active { color: var(--fg); }
.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
}

/* ---------- layout ---------- */

.site-main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.prose { max-width: var(--prose); }

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: 5rem 0 4rem;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -6rem -20rem 0;
  z-index: -1;
  background:
    radial-gradient(40rem 22rem at 18% 12%, color-mix(in srgb, var(--violet) 16%, transparent), transparent 68%),
    radial-gradient(34rem 20rem at 78% 4%, color-mix(in srgb, var(--cyan) 12%, transparent), transparent 66%);
  pointer-events: none;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--cyan);
  margin: 0 0 0.75rem;
}

.hero-name {
  font-size: clamp(3rem, 9vw, 5.75rem);
  font-weight: 700;
  margin: 0;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  color: var(--muted);
  max-width: 38rem;
  margin: 1rem 0 0;
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 2.2rem;
}

.hero-links {
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--muted);
}
.hero-links a { color: var(--muted); }
.hero-links a:hover { color: var(--fg); }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }

.btn-primary {
  background: var(--gradient);
  color: #0b0b12;
  font-weight: 700;
}
.btn-primary:hover { box-shadow: 0 6px 24px color-mix(in srgb, var(--violet) 45%, transparent); }

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--violet); }

/* ---------- sections ---------- */

.section { margin-top: 4.5rem; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  margin-bottom: 1.6rem;
}
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--violet);
}
.section-head h1,
.section-head h2 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
}

.page-intro { color: var(--muted); max-width: 40rem; margin: 0 0 1.8rem; }

/* ---------- cards ---------- */

.card-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.3rem;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem 1.5rem;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--violet) 55%, var(--border));
  box-shadow: 0 10px 34px color-mix(in srgb, var(--violet) 18%, transparent);
}
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
.card p { margin: 0 0 1rem; color: var(--muted); }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
  background: color-mix(in srgb, var(--cyan) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--cyan) 25%, transparent);
  border-radius: 999px;
  padding: 0.1rem 0.65rem;
}

.card-links {
  margin-top: auto;
  display: flex;
  gap: 1.2rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.92rem;
}

/* ---------- filters ---------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0 0 2rem;
  padding: 0;
}
.filters a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.filters a:hover { color: var(--fg); border-color: var(--violet); text-decoration: none; }
.filters a.active {
  color: #0b0b12;
  background: var(--gradient);
  border-color: transparent;
  font-weight: 700;
}

/* ---------- blog list ---------- */

.post-list { list-style: none; padding: 0; margin: 0; }

.post-summary {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--border);
}
.post-summary:first-child { border-top: 1px solid var(--border); }
.post-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--fg);
}
.post-title:hover { color: var(--cyan); text-decoration: none; }
.post-summary p { margin: 0.3rem 0 0; color: var(--muted); }

.date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  white-space: nowrap;
}

.pagination {
  display: flex;
  justify-content: space-between;
  margin-top: 2.5rem;
  font-family: var(--font-display);
  font-weight: 500;
}

/* ---------- blog post ---------- */

.post-header h1 { font-size: clamp(2rem, 5vw, 2.8rem); margin: 0 0 0.6rem; }
.post-meta { display: flex; gap: 1rem; align-items: baseline; flex-wrap: wrap; }
.post-meta .tags a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--violet);
  margin-right: 0.6rem;
}

.post-body { margin-top: 2rem; }
.post-body h2 { margin-top: 2.4rem; }
.post-body pre {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1rem 1.2rem;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 0.92rem;
}
.post-body code { font-family: var(--font-mono); }
.post-body p > code, .post-body li > code {
  background: var(--surface-2);
  border-radius: 5px;
  padding: 0.1rem 0.35rem;
  font-size: 0.88em;
}
.post-body img { max-width: 100%; border-radius: 12px; }
.post-body blockquote {
  margin: 1.5rem 0;
  padding: 0.2rem 1.2rem;
  border-left: 3px solid var(--violet);
  color: var(--muted);
}

.back { margin-top: 3rem; font-family: var(--font-display); font-weight: 500; }

/* ---------- resume ---------- */

.resume-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.6rem;
}
.resume-header h1 { margin: 0; font-size: clamp(1.9rem, 4vw, 2.4rem); }

.resume-intro { margin-bottom: 2.5rem; }
.resume-name { font-size: 1.25rem; font-weight: 600; margin: 0 0 0.2rem; font-family: var(--font-display); }
.resume-contact { color: var(--muted); font-size: 0.92rem; margin: 0; font-family: var(--font-mono); }
.lead { color: var(--muted); }

.resume-block { margin-top: 2.8rem; }
.resume-block h2 {
  font-size: 1.05rem;
  font-family: var(--font-mono);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--violet);
  margin: 0 0 1.1rem;
}

.skill-groups { list-style: none; padding: 0; margin: 0; }
.skill-groups li { margin-bottom: 0.5rem; }
.skill-label { font-weight: 600; font-family: var(--font-display); }

.resume-entry { margin-bottom: 1.7rem; }
.resume-entry-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}
.resume-role { font-weight: 600; font-family: var(--font-display); }
.resume-entry ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.resume-entry li { margin-bottom: 0.3rem; }

.resume-list { margin: 0; padding-left: 1.2rem; }
.resume-list li { margin-bottom: 0.4rem; }

.resume-projects { list-style: none; padding: 0; margin: 0; }
.resume-projects li { margin-bottom: 1.2rem; }
.resume-projects p { margin: 0.2rem 0 0; color: var(--muted); }
.resume-projects .tech {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  margin-left: 0.6rem;
}

/* ---------- contact ---------- */

.contact-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin: 1.8rem 0;
}

.contact-channels { list-style: none; padding: 0; margin: 2rem 0 0; }
.contact-channels li { margin-bottom: 0.6rem; }
.contact-channels .skill-label { display: inline-block; min-width: 5.5rem; }

/* ---------- misc ---------- */

.empty { color: var(--muted); }

.error-page { text-align: center; padding: 5rem 0; }
.error-page h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  margin: 0 0 0.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-footer { border-top: 1px solid var(--border); }
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.5rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.92rem;
}
.footer-inner p { margin: 0; }
.footer-links { display: flex; gap: 1.2rem; font-family: var(--font-display); font-weight: 500; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--fg); }

@media (max-width: 640px) {
  .site-main { padding-top: 1.5rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .post-summary { flex-direction: column; gap: 0.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  .btn:hover, .card:hover { transform: none; }
}