/* ===========================================================
   Tokens
   =========================================================== */
:root {
  --bg: #0B1220;
  --surface: #121B2E;
  --surface-raised: #17233B;
  --border: #223350;
  --text: #E8EDF4;
  --muted: #7C8AA0;
  --muted-dim: #4C5A72;
  --signal: #4FD1A5;
  --signal-dim: #2A5C4C;
  --amber: #F2B84B;
  --danger: #E5697B;

  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-body: 'Inter', -apple-system, system-ui, sans-serif;

  --radius: 4px;
  --max-w: 760px;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Subtle ambient texture — restrained, not decorative noise */
.scanline {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.012) 0px,
    rgba(255,255,255,0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  z-index: 1;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px 80px;
  position: relative;
  z-index: 2;
}

a { color: inherit; }

code {
  font-family: var(--font-mono);
  background: var(--surface-raised);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.9em;
  color: var(--amber);
}

/* ===========================================================
   Header
   =========================================================== */
.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted-dim);
}

.clock {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted-dim);
  font-variant-numeric: tabular-nums;
}

.name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 40px);
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.title {
  font-family: var(--font-mono);
  color: var(--signal);
  font-size: 14px;
  margin: 0 0 20px;
  letter-spacing: 0.01em;
}

.bio {
  color: var(--muted);
  max-width: 56ch;
  margin: 0 0 28px;
  font-size: 15px;
}

.links {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.links a {
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: var(--radius);
  transition: border-color 0.15s ease, color 0.15s ease;
}

.links a:hover,
.links a:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  outline: none;
}

.links a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ===========================================================
   Registry section
   =========================================================== */
.registry {
  margin-top: 56px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.registry-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 8px;
}

.registry-head h2 {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  margin: 0;
  letter-spacing: 0.02em;
}

.sync-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-dim);
}

.registry-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---- Project row ---- */
.row {
  display: grid;
  grid-template-columns: 20px 1fr auto;
  align-items: start;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

/* Clickable row — used when .row is rendered as <a> */
a.row-link {
  text-decoration: none;
  color: inherit;
  display: grid;
  cursor: pointer;
}

a.row-link:hover,
a.row-link:focus-visible {
  border-color: var(--signal);
  background: var(--surface-raised);
  outline: none;
}

a.row-link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.row:hover {
  border-color: var(--muted-dim);
}

.row-body {
  min-width: 0;
}

.row-top {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.row-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
}

.row-path {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted-dim);
}

.row-commit-time {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-dim);
  letter-spacing: 0.01em;
}

.row-commit-time.loading {
  opacity: 0.5;
  animation: shimmer 1.4s ease-in-out infinite;
}

.row-desc {
  color: var(--muted);
  font-size: 13.5px;
  margin: 6px 0 10px;
}

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

.tags span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--amber);
  background: rgba(242, 184, 75, 0.08);
  border: 1px solid rgba(242, 184, 75, 0.2);
  padding: 2px 7px;
  border-radius: 3px;
}

.row-action {
  align-self: center;
}

.row-action span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--bg);
  background: var(--signal);
  padding: 7px 14px;
  border-radius: var(--radius);
  white-space: nowrap;
  display: inline-block;
}

a.row-link:hover .row-action span { filter: brightness(1.08); }

.row-action.pending span {
  color: var(--muted-dim);
  background: transparent;
  border: 1px dashed var(--border);
  padding: 6px 12px;
}

/* ---- Status dot (signature element) ---- */
.pulse-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-top: 6px;
  position: relative;
  flex-shrink: 0;
}

.pulse-dot.live { background: var(--signal); }
.pulse-dot.idle { background: var(--muted-dim); }
.pulse-dot.offline { background: var(--danger); }

.pulse-dot.live::after {
  content: '';
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1px solid var(--signal);
  animation: pulse 2.2s ease-out infinite;
}

@keyframes pulse {
  0%   { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(1.8); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .pulse-dot.live::after { animation: none; opacity: 0; }
}

/* ---- Skeleton loading state ---- */
.skeleton {
  grid-template-columns: 20px 1fr;
}

.cert-card.skeleton {
  grid-template-columns: 20px 1fr;
}


.skel-line {
  height: 14px;
  width: 60%;
  background: var(--surface-raised);
  border-radius: 3px;
  animation: shimmer 1.4s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .skel-line { animation: none; }
}

/* ---- Empty / error state ---- */
.empty-state {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted-dim);
  padding: 20px 4px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
}

/* ===========================================================
   Footer
   =========================================================== */
.footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.footer p {
  color: var(--muted-dim);
  font-size: 12.5px;
  margin: 0;
}

/* ===========================================================
   Shared section head
   =========================================================== */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 18px;
}

.section-head h2 {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  margin: 0;
  letter-spacing: 0.02em;
}

/* ===========================================================
   Certificates
   =========================================================== */
.certs-section {
  margin-top: 48px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.certs-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cert-card {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.cert-card:hover {
  border-color: var(--signal-dim);
  background: var(--surface-raised);
}

.cert-icon {
  font-size: 14px;
  color: var(--signal);
  line-height: 1;
  text-align: center;
}

.cert-name {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.cert-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 3px;
}

.cert-issuer {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--amber);
}

.cert-dot {
  color: var(--muted-dim);
  font-size: 11px;
}

.cert-date {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted-dim);
}

.cert-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  text-decoration: none;
  color: var(--signal);
  border: 1px solid var(--signal-dim);
  padding: 5px 10px;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}

.cert-badge:hover {
  background: var(--signal);
  color: var(--bg);
}

/* ===========================================================
   Extracurriculars / Hobbies — collapsible expand
   =========================================================== */
.expand-section {
  margin-top: 48px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

.expand-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 0;
  color: inherit;
  text-align: left;
}

.expand-toggle:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
  border-radius: var(--radius);
}

.expand-toggle h2 {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  margin: 0;
  letter-spacing: 0.02em;
  flex: 1;
}

.expand-chevron {
  font-size: 10px;
  color: var(--muted-dim);
  transition: transform 0.25s ease;
  display: inline-block;
}

.expand-toggle[aria-expanded="true"] .expand-chevron {
  transform: rotate(90deg);
}

.expand-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-dim);
  transition: opacity 0.2s ease;
}

.expand-toggle[aria-expanded="true"] .expand-hint {
  opacity: 0;
}

/* Panel animation */
.expand-panel {
  overflow: hidden;
  animation: slideDown 0.28s ease forwards;
}

.expand-panel[hidden] {
  display: none;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.extras-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.extra-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.extra-item:hover {
  border-color: var(--muted-dim);
  background: var(--surface-raised);
}

.extra-icon {
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}

.extra-name {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.extra-desc {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.45;
}

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 560px) {
  .wrap { padding: 32px 16px 60px; }
  .row { grid-template-columns: 16px 1fr; }
  .row-action { grid-column: 1 / -1; margin-top: 10px; }
  .row-action span, .row-action.pending span { display: block; text-align: center; }
  .extras-grid { grid-template-columns: 1fr; }
  .cert-card { grid-template-columns: 20px 1fr; }
  .cert-badge { grid-column: 1 / -1; text-align: center; margin-top: 8px; }
}