:root {
  color-scheme: dark;
  --bg: #11131a;
  --panel: #1b1f2b;
  --panel-2: #252b3a;
  --text: #eef2ff;
  --muted: #9aa4b8;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #8fb4ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(17, 19, 26, 0.84), var(--bg) 34rem),
    radial-gradient(circle at 18% 0%, #243452 0, transparent 34rem),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.page {
  width: min(1340px, 100%);
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) clamp(14px, 3vw, 36px) 44px;
}

.hero {
  padding: 24px 0 18px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(36px, 10vw, 76px);
  line-height: 0.95;
}

.summary {
  margin: 14px 0 0;
  max-width: 650px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.section-tabs,
.toolbar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.section-tabs {
  padding: 6px 0 10px;
}

.toolbar {
  padding: 8px 0 18px;
}

.section-tab,
.filter {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 9px 14px;
  font-size: 14px;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
  transform: translateY(0) scale(1);
  transition: transform 90ms ease, filter 90ms ease, background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
  -webkit-tap-highlight-color: transparent;
}

.section-tab:active,
.filter:active {
  transform: translateY(1px) scale(0.96);
  filter: brightness(0.88);
  background: rgba(255, 255, 255, 0.10);
  box-shadow: inset 0 2px 7px rgba(0, 0, 0, 0.22);
}

.section-tab:focus-visible,
.filter:focus-visible,
.demo-link:focus-visible {
  outline: 2px solid rgba(143, 180, 255, 0.95);
  outline-offset: 3px;
}

.section-tab.is-active,
.filter.is-active {
  background: var(--accent);
  color: #0f1420;
  border-color: transparent;
}

.section-tab.is-active:active,
.filter.is-active:active {
  background: #7fa8f5;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.demo-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: clamp(12px, 1.6vw, 20px);
}

.demo-card {
  min-height: 188px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  overflow: hidden;
  transform: translateY(0) scale(1);
  transition: transform 110ms ease, filter 110ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.demo-card:has(.demo-link:hover),
.demo-card:has(.demo-link:focus-visible) {
  border-color: rgba(143, 180, 255, 0.34);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.24);
}

.demo-card:has(.demo-link:active) {
  transform: translateY(2px) scale(0.985);
  filter: brightness(0.90);
  border-color: rgba(143, 180, 255, 0.24);
  box-shadow: inset 0 3px 12px rgba(0, 0, 0, 0.22);
}

.demo-link {
  display: block;
  height: 100%;
  color: inherit;
  text-decoration: none;
  padding: clamp(15px, 1.8vw, 22px);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.demo-topline {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.demo-status {
  color: var(--accent);
}

.tool-card .demo-status {
  color: #8df0c7;
}

.analysis-card .demo-status {
  color: #f0c56b;
}

.demo-title {
  margin: clamp(20px, 3vw, 32px) 0 10px;
  font-size: 24px;
  line-height: 1.15;
}

@media (min-width: 1180px) {
  .hero {
    display: grid;
    grid-template-columns: minmax(0, 780px) 1fr;
    align-items: end;
    min-height: 190px;
  }

  .demo-list {
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  }
}

@media (max-width: 520px) {
  .section-tabs {
    scrollbar-width: none;
  }

  .demo-card {
    min-height: 168px;
  }

  .demo-title {
    font-size: 22px;
  }
}

.demo-desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.demo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}

.demo-tags span {
  padding: 5px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 12px;
}

.empty {
  color: var(--muted);
  padding: 28px 0;
}