:root {
  --bg: #111217;
  --surface: #191a20;
  --surface-strong: #202129;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.2);
  --text: #f5f5f7;
  --muted: #aeb0bc;
  --accent: #e30b4f;
  --accent-soft: rgba(227, 11, 79, 0.16);
  --green: #26d07c;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    var(--bg);
  background-size: 120px 120px;
  color: var(--text);
  font-family: Inter, system-ui, sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.rules-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(17, 18, 23, 0.92);
  backdrop-filter: blur(14px);
}

.brand,
.rules-header nav {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.brand span,
.rules-header nav a,
.eyebrow,
.presence-box span,
.rules-toolbar span,
.rules-count {
  font-family: Rajdhani, Inter, sans-serif;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.brand span,
.rules-header nav a {
  font-size: 0.9rem;
}

.rules-header nav a {
  color: var(--muted);
}

.rules-header nav a:hover {
  color: var(--text);
}

.rules-page {
  width: min(1160px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 54px 0 80px;
}

.rules-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.36fr);
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
}

h1 {
  margin: 0;
  font-family: Rajdhani, Inter, sans-serif;
  font-size: clamp(3.2rem, 9vw, 6.5rem);
  line-height: 0.9;
  letter-spacing: 0;
  text-transform: uppercase;
}

.rules-hero p {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.presence-box,
.rules-toolbar,
.rules-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(25, 26, 32, 0.88);
}

.presence-box {
  display: grid;
  gap: 6px;
  padding: 18px;
}

.presence-box span {
  color: var(--muted);
  font-size: 0.78rem;
}

.presence-box strong {
  color: #adffd2;
  font-size: 1.05rem;
}

.presence-box.is-error strong {
  color: #ffd4df;
}

.rules-toolbar {
  margin-bottom: 18px;
  padding: 16px;
}

.rules-toolbar label {
  display: grid;
  gap: 8px;
}

.rules-toolbar span {
  color: var(--muted);
  font-size: 0.74rem;
}

.rules-toolbar input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #111217;
  color: var(--text);
  font: inherit;
  outline: none;
  padding: 0 14px;
}

.rules-toolbar input:focus {
  border-color: var(--accent);
}

.rules-list {
  display: grid;
  gap: 16px;
}

.rules-panel {
  overflow: hidden;
}

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

.rules-panel summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  min-height: 78px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.rules-panel summary::-webkit-details-marker {
  display: none;
}

.rules-panel summary h2 {
  margin: 0;
  font-family: Rajdhani, Inter, sans-serif;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  letter-spacing: 0;
  text-transform: uppercase;
}

.rules-count {
  min-width: 104px;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #ff9fbd;
  font-size: 0.72rem;
  text-align: center;
}

.rules-content {
  display: grid;
  gap: 10px;
  padding: 0 20px 24px;
  border-top: 1px solid var(--line);
}

.rules-callout {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding: 16px;
  border: 1px solid rgba(227, 11, 79, 0.32);
  border-radius: var(--radius);
  background: rgba(227, 11, 79, 0.08);
}

.rules-content h3 {
  margin: 22px 0 0;
  color: var(--text);
  font-family: Rajdhani, Inter, sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.rules-content .rules-callout h3 {
  margin-top: 0;
  color: #ffabc3;
}

.rules-content p,
.rules-content li {
  color: var(--muted);
  line-height: 1.72;
}

.rules-content p {
  margin: 0;
}

.rules-highlight {
  padding: 0 2px;
  border-radius: 3px;
  background: rgba(227, 11, 79, 0.2);
  color: #fff;
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.rules-content ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}

.rules-empty {
  padding: 22px;
  color: var(--muted);
}

@media (max-width: 820px) {
  .rules-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .rules-hero {
    grid-template-columns: 1fr;
  }

  .rules-panel summary {
    grid-template-columns: 1fr;
  }
}