/* Shared design tokens -- linked by every page (landing, login, the game)
   so the marketing site, auth screen and app all read as one product
   instead of three different-looking pages. Page-specific layout/component
   rules live in each page's own stylesheet (landing.css, auth.css,
   style.css). */
:root {
  --bg: #0b0e14;
  --panel-bg: #131820;
  --panel-bg-alt: #1a212b;
  --border: #262e3a;
  --text: #e6edf3;
  --text-muted: #8b96a5;
  --accent: #58a6ff;
  --accent-2: #a371f7;
  --accent-bg: rgba(88, 166, 255, 0.14);

  --tier-easy: #3fb950;      --tier-easy-bg: rgba(63, 185, 80, 0.16);
  --tier-medium: #e3b341;    --tier-medium-bg: rgba(227, 179, 65, 0.16);
  --tier-hard: #bc8cff;      --tier-hard-bg: rgba(188, 140, 255, 0.18);

  --ok: #3fb950;
  --bad: #f85149;
  --bad-bg: rgba(248, 81, 73, 0.14);
  --ok-bg: rgba(63, 185, 80, 0.14);

  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', 'SFMono-Regular', Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
}

.hidden { display: none !important; }

.btn {
  padding: 9px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-bg-alt);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.1s ease, background 0.15s ease;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: scale(0.98); }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-color: transparent; color: white; }
.btn.primary:hover { opacity: 0.92; }
.btn.subtle { background: transparent; border-color: transparent; color: var(--text-muted); }
.btn.subtle:hover { color: var(--text); }

.pill {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.pill.priority-easy { background: var(--tier-easy-bg); color: var(--tier-easy); }
.pill.priority-medium { background: var(--tier-medium-bg); color: var(--tier-medium); }
.pill.priority-hard { background: var(--tier-hard-bg); color: var(--tier-hard); }

.share-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.share-icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--panel-bg-alt); border: 1px solid var(--border);
  color: var(--text-muted); text-decoration: none;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.share-icon-btn:hover { color: var(--text); border-color: var(--accent); background: var(--accent-bg); }