:root{color-scheme:light;--bg: #f4f6fa;--surface: #ffffff;--surface-muted: #f1f4f8;--border: #e2e7ef;--text: #1f2937;--text-muted: #6b7280;--primary: #2563eb;--primary-hover: #1d4ed8;--secondary: #6b7280;--secondary-hover: #4b5563;--danger: #dc2626;--danger-hover: #b91c1c;--success: #16a34a;--header-bg: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);--header-text: #ffffff;--dad: #3b82f6;--dad-bg: #e0edff;--dad-strong: #1d4ed8;--mom: #ec4899;--mom-bg: #fde4f1;--mom-strong: #be185d;--split: #8b5cf6;--event-activity: #9333ea;--event-family: #f59e0b;--shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .1);--shadow-lg: 0 12px 32px rgba(16, 24, 40, .18);--radius: 12px}@media (prefers-color-scheme: dark){:root{color-scheme:dark;--bg: #0f141c;--surface: #18202b;--surface-muted: #1f2937;--border: #2b3544;--text: #e5e7eb;--text-muted: #9ca3af;--primary: #3b82f6;--primary-hover: #60a5fa;--secondary: #4b5563;--secondary-hover: #6b7280;--danger: #ef4444;--danger-hover: #f87171;--success: #22c55e;--header-bg: linear-gradient(135deg, #1e3a8a 0%, #312e81 100%);--dad-bg: rgba(59, 130, 246, .2);--dad-strong: #93c5fd;--mom-bg: rgba(236, 72, 153, .2);--mom-strong: #f9a8d4;--shadow: 0 1px 2px rgba(0, 0, 0, .4);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .6)}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg);color:var(--text);line-height:1.4}h2{font-size:22px}h3{margin-bottom:15px}.container{max-width:1200px;margin:0 auto;padding:20px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:20px;box-shadow:var(--shadow)}.loading,.empty-state{text-align:center;padding:40px;color:var(--text-muted)}.muted-text{font-size:14px;color:var(--text-muted)}.hint{font-size:14px;color:var(--text-muted);margin-bottom:15px}button{background:var(--primary);color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;transition:background-color .15s}button:hover{background:var(--primary-hover)}button:disabled{opacity:.6;cursor:default}button.secondary{background:var(--secondary)}button.secondary:hover{background:var(--secondary-hover)}button.danger{background:var(--danger)}button.danger:hover{background:var(--danger-hover)}button.small{padding:6px 12px;font-size:13px}td button+button{margin-left:6px}.button-row{display:flex;gap:10px;margin-top:10px}input,textarea,select{width:100%;padding:10px;border:1px solid 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var(--primary)}.day-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.calendar-day.dad .day-label{color:var(--dad-strong)}.calendar-day.mom .day-label{color:var(--mom-strong)}.calendar-day.split .day-label{color:var(--split)}.day-events{display:flex;flex-direction:column;gap:3px;min-width:0}.event-chip{font-size:11px;font-weight:500;color:#fff;padding:2px 6px;border-radius:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.event-chip.activity{background:var(--event-activity)}.event-chip.family{background:var(--event-family)}.event-more{font-size:11px;color:var(--text-muted)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;padding:16px;z-index:1000}.card.modal{width:500px;max-width:100%;max-height:90vh;overflow-y:auto;margin-bottom:0;box-shadow:var(--shadow-lg)}.modal-events{margin:20px 0 10px;padding-top:20px;border-top:1px solid var(--border)}.modal-events h4{margin-bottom:10px;font-size:15px}.modal-event{padding:10px 12px;margin-bottom:10px;background:var(--surface-muted);border-radius:8px;border-left:4px solid var(--event-family)}.modal-event.activity{border-left-color:var(--event-activity)}.modal-event-title{font-weight:500;margin-bottom:5px}.modal-event-notes{font-size:14px;color:var(--text-muted);margin-top:5px}.badge{display:inline-block;font-size:12px;color:#fff;padding:2px 8px;border-radius:999px}.badge.activity{background:var(--event-activity)}.badge.family{background:var(--event-family)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px;margin:20px 0}.stat-card{background:var(--surface-muted);padding:16px;border-radius:10px;border-left:4px solid var(--primary)}.stat-card.dad{border-left-color:var(--dad)}.stat-card.mom{border-left-color:var(--mom)}.stat-card.split{border-left-color:var(--split)}.stat-label{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:26px;font-weight:700;margin-top:5px}.stat-detail{font-size:14px;margin-top:5px}.stat-detail.negative,.stat-note.behind{color:var(--danger)}.stat-detail.positive{color:var(--success)}.stat-detail.muted{color:var(--text-muted)}.stat-note{font-size:12px;color:var(--text-muted);margin-top:5px}.summary-box{margin-top:20px;padding:16px;background:var(--surface-muted);border-radius:10px;font-size:14px;line-height:1.6}.summary-box h3{margin-bottom:8px;font-size:16px}.balance{margin:10px 0 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h1{font-size:18px}.weekday{font-size:11px}.calendar-day{min-height:48px;padding:3px;align-items:center}.day-top{justify-content:center}.day-number{font-size:12px;min-width:22px;height:22px}.day-label,.event-more{display:none}.day-events{flex-direction:row;justify-content:center}.event-chip{font-size:0;width:6px;height:6px;padding:0;border-radius:50%}.calendar-legend{font-size:12px;gap:6px 12px}.stats-grid{grid-template-columns:1fr}.stat-value{font-size:22px}}