/* UME Skill Hub — refined dark design */
:root {
  --bg: #0b0f14;
  --bg-2: #11161d;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.08);
  --text: #edf2f7;
  --text-2: #b7c2ce;
  --text-3: #7d8a99;
  --accent: #7c5cff;
  --accent-2: #00d1b2;
  --accent-3: #ff6b9d;
  --ok: #2dd4bf;
  --warn: #f59e0b;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --font-display: "Fraunces", "Songti SC", "Noto Serif SC", serif;
  --font-body: "Manrope", "PingFang SC", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 20% 10%, rgba(124, 92, 255, 0.18), transparent 32%),
    radial-gradient(circle at 80% 0%, rgba(0, 209, 178, 0.14), transparent 30%),
    radial-gradient(circle at 50% 120%, rgba(255, 107, 157, 0.10), transparent 36%),
    linear-gradient(180deg, #0b0f14 0%, #0e141b 40%, #11161d 100%);
  min-height: 100vh;
}

a { color: var(--accent-2); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: #c8d4e0;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 0.12rem 0.38rem;
  border-radius: 999px;
}

.wrap {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0 0.75rem;
}
.brand {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none !important;
}
.brand:hover,
.brand:focus {
  color: inherit;
  text-decoration: none !important;
}
.brand-mark {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  flex: 0 0 40px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
}
.brand-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.18rem;
  min-width: 0;
}
.brand strong {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.brand-text > span {
  color: var(--text-3);
  font-size: 0.88rem;
  letter-spacing: 0.01em;
}
.nav {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}
.nav a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: rgba(255,255,255,0.03);
  transition: all .18s ease;
}
.nav a:hover {
  color: var(--text);
  border-color: var(--line);
  background: var(--surface-strong);
}

.hero {
  padding: 3rem 0 1.75rem;
  display: grid;
  gap: 1.15rem;
}
.hero-kicker {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: .45rem;
  padding: .35rem .65rem;
  border-radius: 999px;
  border: 1px solid rgba(124,92,255,.25);
  background: rgba(124,92,255,.10);
  color: #d8ceff;
  font-size: .8rem;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: clamp(2.4rem, 5.6vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  white-space: nowrap;
}
.hero p {
  margin: 0;
  max-width: 46rem;
  color: var(--text-2);
  font-size: 1.04rem;
  line-height: 1.7;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 0.6rem;
}
.btn {
  appearance: none;
  border: 1px solid rgba(255,255,255,.10);
  background: linear-gradient(135deg, rgba(124,92,255,.95), rgba(0,209,178,.85));
  color: #081016;
  font: inherit;
  font-weight: 700;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 14px 34px rgba(124, 92, 255, .18);
  transition: transform .16s ease, box-shadow .16s ease, filter .16s ease;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.03); }
.btn.secondary {
  background: rgba(255,255,255,.05);
  color: var(--text);
  box-shadow: none;
}
.btn.secondary:hover { background: rgba(255,255,255,.08); }

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .9rem;
  margin-top: .8rem;
}
.stat {
  padding: 1rem 1rem .9rem;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border: 1px solid var(--line);
}
.stat b {
  display: block;
  font-size: 1.6rem;
  letter-spacing: -0.03em;
}
.stat span {
  color: var(--text-3);
  font-size: .86rem;
}

.panel {
  margin: 1.1rem 0 2.6rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02)),
    rgba(255,255,255,.02);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
}
@media (max-width: 860px) {
  .toolbar { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}

input[type="search"], select {
  width: 100%;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(7, 10, 14, 0.68);
  color: var(--text);
  border-radius: 16px;
  padding: 0.9rem 1rem;
  font: inherit;
  outline: none;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.02);
}
input[type="search"]::placeholder { color: var(--text-3); }
input[type="search"]:focus, select:focus {
  border-color: rgba(124, 92, 255, .55);
  box-shadow: 0 0 0 4px rgba(124, 92, 255, .14);
}
.filters {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  color: var(--text-3);
  font-size: 0.9rem;
  margin: 0.85rem 0 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 0.95rem;
  margin-top: 1rem;
}

.card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 20px;
  padding: 1rem 1rem .95rem;
  background:
    radial-gradient(circle at top right, rgba(124,92,255,.08), transparent 34%),
    radial-gradient(circle at bottom left, rgba(0,209,178,.06), transparent 34%),
    rgba(255,255,255,.035);
  display: flex;
  flex-direction: column;
  gap: 0.62rem;
  min-height: 205px;
  transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: rgba(124,92,255,.28);
  background:
    radial-gradient(circle at top right, rgba(124,92,255,.12), transparent 34%),
    radial-gradient(circle at bottom left, rgba(0,209,178,.10), transparent 34%),
    rgba(255,255,255,.045);
  box-shadow: 0 18px 40px rgba(0,0,0,.24);
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent 28%, transparent 76%, rgba(0,0,0,.08));
  opacity: .8;
}
.card h3 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: -0.015em;
}
.card p {
  margin: 0;
  color: var(--text-3);
  font-size: 0.91rem;
  line-height: 1.55;
  flex: 1;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.chip {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 0.24rem 0.55rem;
  background: rgba(255,255,255,.05);
  color: var(--text-2);
  border: 1px solid rgba(255,255,255,.06);
}
.chip.ok {
  background: rgba(45, 212, 191, 0.12);
  color: #a7f3ea;
  border-color: rgba(45, 212, 191, .18);
}
.chip.warn {
  background: rgba(245, 158, 11, .10);
  color: #fde68a;
  border-color: rgba(245, 158, 11, .16);
}
.chip.accent {
  background: rgba(124, 92, 255, .12);
  color: #ddd3ff;
  border-color: rgba(124, 92, 255, .18);
}
.card-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: .2rem;
}
.card-actions a, .card-actions button {
  font-size: 0.84rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  color: var(--text);
  padding: 0.42rem 0.72rem;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  transition: all .16s ease;
}
.card-actions a:hover, .card-actions button:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.16);
}
.card-actions a.primary, .card-actions button.primary {
  background: linear-gradient(135deg, rgba(124,92,255,.96), rgba(0,209,178,.88));
  border-color: transparent;
  color: #071016;
  font-weight: 700;
}

.api {
  margin: 2rem 0 3rem;
}
.api h2 {
  font-family: var(--font-display);
  font-weight: 650;
  margin: 0 0 0.85rem;
  letter-spacing: -0.02em;
}
.api pre {
  margin: 0;
  overflow: auto;
  padding: 1.1rem 1.2rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(2,6,12,.92), rgba(7,10,14,.88));
  color: #d9e7f2;
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.6;
  border: 1px solid rgba(255,255,255,.07);
}

.footer {
  padding: 1.4rem 0 2.8rem;
  color: var(--text-3);
  font-size: 0.88rem;
  border-top: 1px solid var(--line);
}

.empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-3);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%);
  background: rgba(17, 24, 32, 0.95);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 20;
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 16px 40px rgba(0,0,0,.28);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-2px); }

.badge-dot {
  display: inline-block;
  width: .5rem;
  height: .5rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 6px rgba(124, 92, 255, .10);
  margin-right: .55rem;
  vertical-align: 1px;
}

@media (max-width: 720px) {
  .top { align-items: flex-start; flex-direction: column; }
  .hero { padding-top: 2.2rem; }
  .panel { padding: .9rem; border-radius: 20px; }
}