/* =========================================================
   rules.css – /rules page
   ========================================================= */

body.rules-page {
  display: flex !important;
  flex-direction: column !important;
  height: 100vh !important;
  height: 100dvh !important;
  margin: 0 !important;
  overflow: hidden !important;
}

body.rules-page .footer-shell {
  position: static !important;
  flex: 0 0 auto !important;
  bottom: auto !important;
  z-index: auto !important;
}

body.rules-page .rules-shell {
  flex: 1 1 auto !important;
  min-height: 0 !important;
  max-height: none !important;
  height: auto !important;
  display: flex !important;
  flex-direction: column !important;
  overflow: hidden !important;
  padding: 66px 12px clamp(2px, 0.87dvh, 8px) !important;
}

body.rules-page .page-card {
  margin-top: clamp(2px, 0.87dvh, 8px) !important;
  margin-bottom: 0 !important;
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
  padding: 16px 16px 10px;
  border-radius: 20px;
  border-color: color-mix(in srgb, var(--line) 56%, transparent);
  background: linear-gradient(145deg, color-mix(in srgb, var(--card) 92%, transparent), color-mix(in srgb, var(--surface) 96%, transparent));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 5%, transparent),
    0 16px 40px color-mix(in srgb, var(--shadow) 44%, transparent);
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto;
  gap: 10px;
  overflow: hidden;
}

body.rules-page .page-card:hover {
  transform: none;
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 5%, transparent),
    0 16px 40px color-mix(in srgb, var(--shadow) 44%, transparent);
}

body.rules-page .rules-header {
  align-items: start;
  margin-bottom: 0;
}

body.rules-page .rules-hero h2 {
  font-size: 24px;
  line-height: 1;
  margin: 0;
}

#rulesPanels {
  min-height: 0;
  overflow: hidden;
  padding-right: 0;
}

/* ── Tab bar ─────────────────────────────────────────────── */
.rules-tabs {
  display: flex;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 55%, transparent);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.rules-tabs::-webkit-scrollbar { display: none; }
.rules-tab {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  background: transparent;
  font: 600 12px/1 'Inter', sans-serif;
  color: var(--soft);
  cursor: pointer;
  transition: color .15s, border-color .15s;
  border-radius: 0;
  white-space: nowrap;
  flex-shrink: 0;
}
.rules-tab svg { width: 14px; height: 14px; flex-shrink: 0; }
.rules-tab:hover { color: var(--text2); }
.rules-tab[aria-selected="true"] {
  color: var(--text);
  border-bottom-color: var(--accent2);
}

/* ── Alert banner ────────────────────────────────────────── */
.rules-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, transparent);
  font-size: 11.5px;
  color: var(--text2);
  line-height: 1.5;
  margin-bottom: 0;
}
.rules-alert-icon {
  width: 15px;
  height: 15px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ── Tab panels ──────────────────────────────────────────── */
.rules-panel { display: none; }
.rules-panel.is-active {
  display: block;
  animation: rules-panel-in .22s var(--ease-premium);
}

.rules-panel-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}
.rules-panel-eyebrow {
  margin: 0 0 5px;
  font: 700 10px/1 'Fira Code', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--soft);
}
.rules-panel-title {
  margin: 0;
  font: 700 18px/1 'Rajdhani', sans-serif;
  letter-spacing: -0.01em;
  color: var(--text);
}
.rules-panel-count {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent2) 28%, var(--line));
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent2) 10%, transparent), color-mix(in srgb, var(--card) 86%, transparent));
  font: 700 9px/1 'Fira Code', monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--accent2) 62%, var(--text));
}

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

/* ── Rules list ──────────────────────────────────────────── */
.rules-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.rules-item {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: flex-start;
  min-height: 100%;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--line2) 50%, transparent);
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--accent2) 11%, transparent), transparent 42%),
    linear-gradient(155deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--card) 88%, transparent));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 6%, transparent),
    0 12px 26px color-mix(in srgb, var(--shadow) 28%, transparent);
  font-size: 13px;
  color: var(--text2);
  line-height: 1.7;
  overflow: hidden;
  transition: transform .18s var(--ease-premium), border-color .18s var(--ease-premium), box-shadow .18s var(--ease-premium), background .18s var(--ease-premium);
}
.rules-item::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 72%, transparent), color-mix(in srgb, var(--accent2) 78%, transparent), transparent 78%);
  opacity: 0.9;
}
.rules-item:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent2) 44%, var(--line));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 8%, transparent),
    0 18px 34px color-mix(in srgb, var(--shadow) 34%, transparent);
}
.rules-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  border: 1px solid color-mix(in srgb, var(--accent2) 34%, var(--line));
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent2) 18%, transparent), color-mix(in srgb, var(--card) 82%, transparent));
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 6%, transparent);
  font: 700 10px/1 'Fira Code', monospace;
  color: color-mix(in srgb, var(--accent2) 72%, var(--text));
  flex-shrink: 0;
}
.rules-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.rules-item-title {
  display: block;
  margin: 0;
  font: 700 15px/1.08 'Rajdhani', sans-serif;
  letter-spacing: 0.01em;
  color: var(--text);
}
.rules-item-body {
  margin: 0;
  font-size: 11.75px;
  color: color-mix(in srgb, var(--text2) 88%, var(--text));
  overflow-wrap: anywhere;
  line-height: 1.45;
}
.rules-item-body.is-plain {
  padding-top: 2px;
  color: color-mix(in srgb, var(--text2) 96%, var(--text));
}

/* ── CTA ─────────────────────────────────────────────────── */
.rules-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0 0;
  border-top: 1px solid color-mix(in srgb, var(--line) 30%, transparent);
  gap: 12px;
  flex-wrap: wrap;
}
.rules-cta-text { font: 400 11px/1.45 'Inter', sans-serif; color: var(--soft); }

/* Panel con pocos ítems: columna única */
.rules-panel#writeups .rules-list { grid-template-columns: 1fr; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 920px) {
  .rules-list { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  body.rules-page .rules-shell {
    flex: 1 1 auto;
    height: auto;
    min-height: 0;
    overflow-y: auto;
    padding: 106px 0 8px !important;
  }
  body.rules-page .page-card {
    flex: 0 0 auto;
    overflow: visible;
    padding: 12px;
    border-radius: 18px;
    gap: 10px;
  }
  #rulesPanels {
    overflow: visible;
  }
  body.rules-page .rules-hero h2 { font-size: 22px; }
  .rules-tab { padding: 8px 12px; font-size: 11px; }
  .rules-panel-head {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 10px;
  }
  .rules-panel-title { font-size: 18px; }
  .rules-panel-count { min-height: 30px; padding: 0 10px; font-size: 9px; }
  .rules-item {
    gap: 10px;
    padding: 14px;
    border-radius: 15px;
  }
  .rules-num {
    width: 34px;
    height: 34px;
    border-radius: 12px;
    font-size: 11px;
  }
  .rules-item-title { font-size: 15.5px; }
  .rules-item-body { font-size: 12.25px; }
  .rules-cta-text { font-size: 11px; }
}

@media (max-width: 760px) {
  body.rules-page {
    height: auto !important;
    min-height: 100dvh !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
  }

  body.rules-page .rules-shell {
    height: auto !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow: visible !important;
  }

  body.rules-page .page-card,
  #rulesPanels,
  .rules-panel,
  .rules-panel.is-active {
    height: auto !important;
    max-height: none !important;
    overflow: visible !important;
  }
}

@media (max-width: 760px) {
  body.rules-page .rules-shell {
    width: calc(100% - 12px) !important;
    margin: 0 auto !important;
    padding: 96px 0 14px !important;
  }

  body.rules-page .page-card {
    margin-top: 0 !important;
    padding: 14px 12px !important;
    border-radius: 16px !important;
    gap: 12px !important;
  }

  body.rules-page .rules-header {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto !important;
    align-items: center !important;
    gap: 10px !important;
  }

  body.rules-page .rules-hero {
    min-width: 0;
  }

  body.rules-page .rules-hero h2 {
    font-size: 22px !important;
  }

  .rules-tabs {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    border-bottom: 0;
    overflow: visible;
  }

  .rules-tab {
    min-width: 0;
    min-height: 58px;
    margin-bottom: 0;
    padding: 10px 8px;
    border: 1px solid color-mix(in srgb, var(--line2) 48%, transparent);
    border-radius: 12px;
    background: linear-gradient(145deg, color-mix(in srgb, var(--surface) 94%, transparent), color-mix(in srgb, var(--card) 88%, transparent));
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    text-align: center;
    white-space: normal;
    word-break: break-word;
    line-height: 1.15;
    font-size: 10.5px;
  }

  .rules-tab svg {
    width: 14px;
    height: 14px;
  }

  .rules-tab[aria-selected="true"] {
    border-color: color-mix(in srgb, var(--accent2) 56%, var(--line));
    border-bottom-color: color-mix(in srgb, var(--accent2) 56%, var(--line));
    background: linear-gradient(145deg, color-mix(in srgb, var(--accent2) 12%, transparent), color-mix(in srgb, var(--surface) 92%, transparent));
    box-shadow: 0 8px 20px color-mix(in srgb, var(--shadow) 24%, transparent);
  }

  .rules-alert {
    padding: 10px 12px;
    font-size: 11px;
    line-height: 1.5;
  }

  .rules-panel-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
  }

  .rules-panel-title {
    font-size: 18px;
    line-height: 1.05;
  }

  .rules-panel-count {
    min-height: 28px;
    padding: 0 10px;
    align-self: flex-start;
  }

  .rules-list {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .rules-item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
    padding: 12px;
    border-radius: 14px;
  }

  .rules-num {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    font-size: 10px;
  }

  .rules-copy {
    gap: 6px;
  }

  .rules-item-title {
    font-size: 15px;
    line-height: 1.15;
    overflow-wrap: anywhere;
  }

  .rules-item-body {
    font-size: 11.5px;
    line-height: 1.45;
  }

  .rules-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .rules-cta .primary-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 420px) {
  .rules-tabs {
    grid-template-columns: 1fr;
  }

  .rules-tab {
    min-height: 44px;
    display: grid;
    grid-template-columns: 14px minmax(0, 1fr);
    align-items: center;
    justify-content: start;
    text-align: left;
    gap: 8px;
    padding: 10px 12px;
  }
}