/* Habit Tracker — Crimson Dark */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #DC2626;
  --primary-dim: rgba(220,38,38,0.12);
  --secondary: #EF4444;
  --accent: #34D399;
  --accent-dim: rgba(52,211,153,0.12);
  --bg: #1A0808;
  --bg-card: #221010;
  --border: rgba(220,38,38,0.10);
  --text: #F1E0E0;
  --text-dim: #C4A0A0;
  --text-muted: #6B3A3A;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', system-ui, sans-serif;
  --transition: 0.2s ease;
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); background: var(--bg); color: var(--text); min-height: 100vh; line-height: 1.6; }

.header { border-bottom: 1px solid var(--border); background: rgba(34,16,16,0.95); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 10; }
.header-inner { max-width: 700px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; }
.header-left { display: flex; align-items: center; gap: 10px; }
.header-actions { display: flex; gap: 6px; }
.logo-icon { font-size: 1.2rem; width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; background: var(--primary-dim); border-radius: var(--radius-sm); }
.header h1 { font-size: 1.05rem; font-weight: 700; }
.subtitle { font-size: 0.72rem; color: var(--text-dim); }

.main { max-width: 700px; margin: 0 auto; padding: 20px; }

.btn { padding: 8px 16px; font-family: var(--font); font-size: 0.78rem; font-weight: 600; border: none; border-radius: 6px; cursor: pointer; transition: all var(--transition); }
.btn-sm { padding: 5px 10px; font-size: 0.72rem; background: var(--primary-dim); color: var(--primary); border: 1px solid rgba(220,38,38,0.2); }
.btn-primary { width: 100%; padding: 10px; background: var(--primary); color: #fff; font-size: 0.82rem; margin-top: 8px; }
.input { width: 100%; padding: 8px 12px; font-family: var(--font); font-size: 0.78rem; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 6px; outline: none; margin-bottom: 6px; }

.habits-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }

.habit-row { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); cursor: pointer; transition: all var(--transition); }
.habit-row:hover { border-color: rgba(220,38,38,0.25); }
.habit-row.selected { border-color: var(--primary); }
.habit-icon { font-size: 1.2rem; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--primary-dim); border-radius: var(--radius-sm); flex-shrink: 0; }
.habit-info { flex: 1; }
.habit-name { font-size: 0.82rem; font-weight: 600; }
.habit-streak { font-size: 0.62rem; color: var(--text-dim); }
.habit-streak b { color: var(--primary); }
.habit-check { width: 32px; height: 32px; border-radius: 50%; border: 2px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; cursor: pointer; transition: all var(--transition); flex-shrink: 0; }
.habit-check.done { background: var(--accent); border-color: var(--accent); }
.habit-delete { font-size: 0.72rem; color: var(--text-muted); cursor: pointer; padding: 4px; border: none; background: none; }

.panel-header { display: flex; align-items: center; justify-content: space-between; padding: 8px 14px; border-bottom: 1px solid var(--border); }
.panel-label { font-size: 0.72rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }

.heatmap-card, .badges-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 8px; }
.heatmap-grid { display: flex; flex-wrap: wrap; gap: 2px; padding: 10px 14px; }
.heatmap-cell { width: 10px; height: 10px; border-radius: 2px; background: rgba(220,38,38,0.05); }
.heatmap-legend { display: flex; align-items: center; gap: 2px; }
.heatmap-legend-label { font-size: 0.52rem; color: var(--text-muted); }

.badges-grid { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 14px; }
.badge { padding: 4px 10px; border-radius: 20px; font-size: 0.62rem; font-weight: 600; }
.badge.earned { background: var(--accent-dim); color: var(--accent); }
.badge.locked { background: rgba(107,58,58,0.15); color: var(--text-muted); }

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; max-width: 360px; width: 90%; }
.modal-title { font-size: 0.88rem; font-weight: 700; margin-bottom: 10px; }

.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 200; }
.toast { padding: 10px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); box-shadow: 0 4px 24px rgba(0,0,0,0.5); font-size: 0.82rem; animation: toastIn 0.3s ease; }
@keyframes toastIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }