/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design tokens ──────────────────────────────────────────────────────────── */
:root {
  --rr-bg:        #0d1117;
  --rr-surface:   #161b22;
  --rr-surface2:  #21262d;
  --rr-border:    #30363d;
  --rr-text:      #e6edf3;
  --rr-muted:     #8b949e;
  --rr-accent:    #22d3ee;
  --rr-exact:     #22c55e;
  --rr-miss:      #eab308;
  --rr-danger:    #ef4444;
  --rr-r-sm:      6px;
  --rr-r-md:      10px;
  --rr-r-lg:      18px;
}

/* ── Base ───────────────────────────────────────────────────────────────────── */
html, body {
  height: 100%;
  background: var(--rr-bg);
  color: var(--rr-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

/* ── Page layout ────────────────────────────────────────────────────────────── */
.rr-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 14px env(safe-area-inset-bottom, 20px);
  max-width: 430px;
  margin: 0 auto;
}

/* ── Top bar ────────────────────────────────────────────────────────────────── */
.rr-top-bar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0 6px;
}

.rr-back-link {
  color: var(--rr-muted);
  text-decoration: none;
  font-size: 13px;
  transition: color .15s;
}
.rr-back-link:hover { color: var(--rr-text); }

/* ── Header ─────────────────────────────────────────────────────────────────── */
.rr-header {
  width: 100%;
  text-align: center;
  padding: 2px 0 6px;
}

.rr-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.5px;
  /* Rainbow gradient */
  background: linear-gradient(125deg, #ef4444 0%, #f97316 20%, #eab308 40%, #22c55e 60%, #3b82f6 80%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.rr-subtitle {
  color: var(--rr-muted);
  font-size: 13px;
  margin-top: 2px;
}

.rr-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 6px;
}

.rr-muted { color: var(--rr-muted); font-size: 13px; }

.rr-streak {
  font-size: 13px;
  color: var(--rr-muted);
}
.rr-streak strong { color: var(--rr-text); }

/* ── Rule card ──────────────────────────────────────────────────────────────── */
.rr-rule-card {
  width: 100%;
  background: var(--rr-surface);
  border: 1px solid var(--rr-border);
  border-left: 3px solid var(--rr-accent);
  border-radius: var(--rr-r-md);
  padding: 8px 12px;
  margin-bottom: 8px;
}

.rr-rule-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--rr-accent);
  margin-bottom: 3px;
}

.rr-rule-label {
  font-size: 17px;
  font-weight: 700;
  color: var(--rr-text);
}

.rr-rule-desc {
  font-size: 13px;
  color: var(--rr-muted);
  margin-top: 2px;
}

/* ── Feedback legend ────────────────────────────────────────────────────────── */
.rr-legend {
  width: 100%;
  display: flex;
  gap: 16px;
  justify-content: flex-end;
  font-size: 11px;
  color: var(--rr-muted);
  margin-bottom: 6px;
}

.rr-legend-exact { color: var(--rr-exact); font-weight: 700; }
.rr-legend-miss  { color: var(--rr-miss);  font-weight: 700; }

/* ── Guess board ────────────────────────────────────────────────────────────── */
.rr-board {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 10px;
}

.rr-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rr-slots {
  flex: 1;
  display: flex;
  gap: 5px;
}

.rr-slot {
  flex: 1;
  height: 54px;
  min-width: 0;
  border-radius: var(--rr-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  user-select: none;
  transition: background .1s;
}

.rr-slot--empty {
  background: var(--rr-surface2);
  border: 2px solid var(--rr-border);
  color: transparent;
}

.rr-slot--filled {
  border: 2px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.92);
  text-shadow: 0 1px 3px rgba(0,0,0,.45);
}

.rr-row--active .rr-slot--empty {
  border-color: var(--rr-accent);
  opacity: .65;
}

/* ── Feedback ───────────────────────────────────────────────────────────────── */
.rr-feedback {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 3px;
  width: 46px;
  flex-shrink: 0;
  background: var(--rr-surface2);
  border: 1px solid var(--rr-border);
  border-radius: var(--rr-r-sm);
  padding: 5px 7px;
}

.rr-fb-exact,
.rr-fb-miss {
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .01em;
}

/* Muted (no result yet) — symbol only */
.rr-fb-exact { color: var(--rr-muted); }
.rr-fb-miss  { color: var(--rr-muted); }

/* When a row has been submitted, the row gets rr-row--done which lights up counters */
.rr-row--done .rr-fb-exact { color: var(--rr-exact); }
.rr-row--done .rr-fb-miss  { color: var(--rr-miss);  }

/* ── Controls area ──────────────────────────────────────────────────────────── */
.rr-controls {
  width: 100%;
  margin-top: auto;
  padding-top: 2px;
}

/* ── Color tray ─────────────────────────────────────────────────────────────── */
.rr-tray {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-bottom: 8px;
}

.rr-color-btn {
  aspect-ratio: 1;
  border: none;
  border-radius: var(--rr-r-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  touch-action: manipulation;
  transition: transform .08s, filter .08s;
  position: relative;
}

.rr-color-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(255,255,255,0);
  transition: background .08s;
}

.rr-color-btn:hover::after  { background: rgba(255,255,255,.08); }
.rr-color-btn:active { transform: scale(.90); }

.rr-color-label {
  font-size: 15px;
  font-weight: 900;
  color: rgba(255,255,255,.88);
  text-shadow: 0 1px 4px rgba(0,0,0,.55);
  pointer-events: none;
  user-select: none;
  position: relative;
  z-index: 1;
}

/* ── Delete / Submit row ────────────────────────────────────────────────────── */
.rr-action-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 8px;
}

.rr-btn {
  height: 46px;
  border: none;
  border-radius: var(--rr-r-sm);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  transition: opacity .15s, transform .08s;
}

.rr-btn:disabled { opacity: .32; cursor: default; }
.rr-btn:not(:disabled):active { transform: scale(.97); }

.rr-btn--primary {
  background: var(--rr-accent);
  color: #0d1117;
}

.rr-btn--secondary {
  background: var(--rr-surface2);
  color: var(--rr-text);
  border: 1px solid var(--rr-border);
}

/* ── Result bottom sheet ────────────────────────────────────────────────────── */
.rr-result-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13,17,23,.88);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  padding: 0 14px env(safe-area-inset-bottom, 20px);
}

.rr-result-overlay.rr-result-overlay--open { display: flex; }

.rr-result-panel {
  background: var(--rr-surface);
  border: 1px solid var(--rr-border);
  border-radius: var(--rr-r-lg) var(--rr-r-lg) 0 0;
  padding: 24px 20px 16px;
  width: 100%;
  max-width: 430px;
  text-align: center;
}

.rr-result-medal {
  font-size: 54px;
  line-height: 1;
  margin-bottom: 8px;
}

.rr-result-count {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 4px;
}

.rr-result-rule {
  font-size: 14px;
  color: var(--rr-muted);
  margin-bottom: 16px;
}
.rr-result-rule strong { color: var(--rr-text); }

.rr-result-answer { margin-bottom: 16px; }

.rr-result-answer-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--rr-muted);
  margin-bottom: 8px;
}

.rr-result-tiles {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.rr-result-tile {
  width: 46px;
  height: 46px;
  border-radius: var(--rr-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 900;
  color: rgba(255,255,255,.92);
  text-shadow: 0 1px 3px rgba(0,0,0,.45);
}

/* ── Stats ──────────────────────────────────────────────────────────────────── */
.rr-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--rr-border);
  border-bottom: 1px solid var(--rr-border);
}

.rr-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.rr-stat strong {
  font-size: 22px;
  font-weight: 800;
}

.rr-stat span {
  font-size: 10px;
  color: var(--rr-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ── Share / close ──────────────────────────────────────────────────────────── */
.rr-share-btn {
  display: block;
  width: 100%;
  height: 50px;
  background: var(--rr-accent);
  color: #0d1117;
  border: none;
  border-radius: var(--rr-r-sm);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 8px;
  touch-action: manipulation;
  transition: opacity .15s;
}
.rr-share-btn:active { opacity: .85; }

.rr-close-btn {
  display: block;
  width: 100%;
  height: 40px;
  background: transparent;
  color: var(--rr-muted);
  border: none;
  font-size: 14px;
  cursor: pointer;
}

/* ── Help modal ─────────────────────────────────────────────────────────────── */
.rr-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13,17,23,.85);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  align-items: flex-end;
  justify-content: center;
  z-index: 200;
  padding: 0 14px env(safe-area-inset-bottom, 20px);
}
.rr-modal-overlay--open { display: flex; }

.rr-modal {
  background: var(--rr-surface);
  border: 1px solid var(--rr-border);
  border-radius: var(--rr-r-lg) var(--rr-r-lg) 0 0;
  padding: 24px 20px 20px;
  width: 100%;
  max-width: 430px;
  position: relative;
}

.rr-modal-close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: none;
  border: none;
  color: var(--rr-muted);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
}

.rr-modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 14px;
}

.rr-modal-body p {
  font-size: 14px;
  color: var(--rr-muted);
  margin-bottom: 10px;
}
.rr-modal-body strong { color: var(--rr-text); }

.rr-help-rows {
  margin: 10px 0 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rr-help-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--rr-muted);
}

.rr-help-badge {
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}

.rr-help-exact { background: rgba(34,197,94,.15);  color: var(--rr-exact); }
.rr-help-miss  { background: rgba(234,179,8,.15);  color: var(--rr-miss);  }

.rr-help-note {
  font-size: 12px !important;
  opacity: .7;
}

/* ── Toast ──────────────────────────────────────────────────────────────────── */
.rr-toast {
  position: fixed;
  bottom: calc(env(safe-area-inset-bottom, 20px) + 90px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--rr-surface2);
  border: 1px solid var(--rr-border);
  color: var(--rr-text);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 20px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  z-index: 300;
  transition: opacity .2s, transform .2s;
}
.rr-toast--show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.rr-toast--ok   { border-color: var(--rr-exact);  color: var(--rr-exact);  }
.rr-toast--warn { border-color: var(--rr-miss);   color: var(--rr-miss);   }
.rr-toast--err  { border-color: var(--rr-danger); color: var(--rr-danger); }

/* ── Shake animation ────────────────────────────────────────────────────────── */
@keyframes rr-shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-7px); }
  40%       { transform: translateX(7px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}
.rr-shake { animation: rr-shake .42s ease; }

/* ── Responsive: slightly smaller on very narrow screens ────────────────────── */
@media (max-width: 360px) {
  .rr-title { font-size: 22px; }
  .rr-slot  { font-size: 11px; }
  .rr-color-label { font-size: 13px; }
}