*{margin:0;padding:0;box-sizing:border-box}:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-text: #1e293b;--color-text-secondary: #64748b;--color-border: #e2e8f0;--color-primary: #10b981;--color-primary-hover: #059669;--color-danger: #ef4444;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--transition: .2s ease}:root[data-theme=dark]{--color-bg: #0f172a;--color-surface: #1e293b;--color-text: #e2e8f0;--color-text-secondary: #94a3b8;--color-border: #334155;--color-primary: #10b981;--color-primary-hover: #059669;--color-danger: #ef4444;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .3)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}.app{max-width:720px;margin:0 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0;color:var(--color-text-secondary);font-size:.75rem}.view-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.view-header h2{font-size:1.3rem;font-weight:700}.date-badge{background:var(--color-surface);border:1px solid var(--color-border);border-radius:20px;padding:4px 14px;font-size:.8rem;color:var(--color-text-secondary)}.btn{border:none;border-radius:var(--radius-sm);padding:10px 20px;font-size:.9rem;font-weight:500;cursor:pointer;transition:var(--transition)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-bg)}.btn-danger{background:transparent;color:var(--color-danger)}.btn-danger:hover{background:#fef2f2}.btn-small{padding:6px 12px;font-size:.8rem}.empty-state{text-align:center;padding:60px 20px}.empty-icon{font-size:3rem;margin-bottom:16px}.empty-state h2{font-size:1.2rem;margin-bottom:8px}.empty-state p{color:var(--color-text-secondary);font-size:.9rem;margin-bottom:20px}.habit-form-card{background:var(--color-surface);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-sm);margin-bottom:20px}.habit-form-card h3{font-size:1.1rem;margin-bottom:16px}.form-field{margin-bottom:16px}.form-field label{display:block;font-size:.85rem;font-weight:500;margin-bottom:6px;color:var(--color-text-secondary)}.form-input{width:100%;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:.95rem;transition:var(--transition);outline:none}.form-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #10b9811a}.color-picker{display:flex;gap:10px}.color-option{width:32px;height:32px;border-radius:50%;border:3px solid 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solid;box-shadow:var(--shadow-sm);transition:var(--transition)}.habit-card:hover{box-shadow:var(--shadow-md)}.habit-card-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.habit-card-icon{width:40px;height:40px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.habit-card-name{font-size:1rem;font-weight:600}.habit-card-desc{font-size:.8rem;color:var(--color-text-secondary);margin-top:2px}.habit-card-stats{display:flex;gap:12px;margin-bottom:12px}.stat-pill{display:flex;align-items:baseline;gap:4px}.stat-value{font-size:1.2rem;font-weight:700}.stat-label{font-size:.75rem;color:var(--color-text-secondary)}.habit-card-actions{display:flex;gap:8px}.today-progress-card{background:var(--color-surface);border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm);margin-bottom:20px}.progress-text{display:flex;align-items:baseline;gap:10px;margin-bottom:10px}.progress-count{font-size:1.5rem;font-weight:700;color:var(--color-primary)}.progress-label{font-size:.85rem;color:var(--color-text-secondary)}.progress-bar{height:8px;background:var(--color-bg);border-radius:4px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--color-primary);border-radius:4px;transition:width 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h3{font-size:1rem;margin-bottom:14px}.heatmap-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.heatmap-day{text-align:center}.heatmap-cell{height:48px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600;color:#475569}.heatmap-cell.today{outline:2px solid var(--color-primary);outline-offset:1px}.heatmap-label{font-size:.7rem;color:var(--color-text-secondary);margin-top:4px;display:block}.stats-summary{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:24px}.summary-card{background:var(--color-surface);border-radius:var(--radius-md);padding:20px;text-align:center;box-shadow:var(--shadow-sm)}.summary-icon{font-size:1.5rem;margin-bottom:6px}.summary-value{font-size:1.8rem;font-weight:700;color:var(--color-text)}.summary-label{font-size:.8rem;color:var(--color-text-secondary);margin-top:2px}.stats-detail-section,.stats-heatmap-section{background:var(--color-surface);border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm);margin-bottom:16px}.stats-detail-section h3,.stats-heatmap-section h3{font-size:1rem;margin-bottom:16px}.stats-habit-list{display:flex;flex-direction:column;gap:14px}.stats-habit-row{display:grid;grid-template-columns:1fr auto;gap:8px 12px;align-items:center;padding-left:12px;border-left:4px solid}.stats-habit-name{font-weight:600;font-size:.9rem;display:flex;align-items:center;gap:8px}.stats-color-dot{width:10px;height:10px;border-radius:50%}.stats-habit-metrics{display:flex;gap:10px;font-size:.8rem;color:var(--color-text-secondary)}.stats-habit-bar{grid-column:1 / -1}.bar-track{height:6px;background:var(--color-bg);border-radius:3px;overflow:hidden}.bar-fill{height:100%;border-radius:3px;transition:width .3s ease}.heatmap-30-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;margin-bottom:12px}.heatmap-30-cell{aspect-ratio:1;border-radius:4px;min-height:18px}.heatmap-legend{display:flex;align-items:center;gap:8px;font-size:.75rem;color:var(--color-text-secondary);justify-content:flex-end}.legend-cells{display:flex;gap:3px}.legend-cells div{width:14px;height:14px;border-radius:3px}.best-habit-card{display:flex;align-items:center;gap:16px;border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm)}.best-icon{font-size:2rem}.best-title{font-size:.75rem;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.best-habit-name{font-size:1.1rem;font-weight:700;margin:2px 0}.best-streak{font-size:.85rem;color:var(--color-text-secondary)}:root[data-theme=dark] .checkin-item.checked{background:#10b9811a}:root[data-theme=dark] .heatmap-cell{color:#cbd5e1}:root[data-theme=dark] .heatmap-cell[style*="#f1f5f9"],:root[data-theme=dark] .heatmap-30-cell[style*="#f1f5f9"]{background-color:#1e293b!important}:root[data-theme=dark] .progress-bar{background:#334155}:root[data-theme=dark] .bar-track{background:#334155}:root[data-theme=dark] .form-input{background:#0f172a;color:#e2e8f0}:root[data-theme=dark] .form-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #10b98126}:root[data-theme=dark] .btn-ghost:hover{background:#334155}:root[data-theme=dark] .nav-item:hover{background:#0f172a}.app-header-top{display:flex;justify-content:center;align-items:center;gap:12px;position:relative}.theme-toggle{position:absolute;right:0;top:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:50%;width:38px;height:38px;font-size:1.1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition);box-shadow:var(--shadow-sm)}.theme-toggle:hover{transform:scale(1.1)}.export-buttons{display:flex;gap:6px}.encouragement-card{display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,#fef3c7,#fde68a);border-radius:var(--radius-md);padding:14px 18px;margin-bottom:20px;box-shadow:var(--shadow-sm)}:root[data-theme=dark] .encouragement-card{background:linear-gradient(135deg,#422006,#451a03)}.encouragement-emoji{font-size:1.4rem;flex-shrink:0}.encouragement-text{font-size:.9rem;font-weight:500;color:#92400e}:root[data-theme=dark] .encouragement-text{color:#fde68a}.import-toast{border-radius:var(--radius-sm);padding:10px 16px;margin-bottom:16px;font-size:.85rem;font-weight:500;animation:slideDown .3s ease}.import-toast.success{background:#f0fdf4;color:#16a34a}.import-toast.error{background:#fef2f2;color:#ef4444}:root[data-theme=dark] .import-toast.success{background:#10b98126}:root[data-theme=dark] .import-toast.error{background:#ef444426}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.drag-handle{margin-left:auto;font-size:1.2rem;color:var(--color-text-secondary);cursor:grab;opacity:.4;transition:opacity .2s;-webkit-user-select:none;user-select:none}.habit-card:hover .drag-handle{opacity:.8}.drag-handle:active{cursor:grabbing}.habit-card.dragging{opacity:.4;transform:scale(.98)}.habit-card.drag-over{border-top:3px solid var(--color-primary);margin-top:-3px}.archived-section{margin-top:24px}.archived-toggle{width:100%;text-align:left;padding:10px 14px;font-size:.85rem}.archived-list{display:flex;flex-direction:column;gap:8px;margin-top:10px}.archived-item{display:flex;justify-content:space-between;align-items:center;background:var(--color-surface);border-radius:var(--radius-sm);padding:12px 16px;border-left:4px solid;opacity:.7}.archived-item-info{display:flex;flex-direction:column}.archived-item-name{font-weight:600;font-size:.9rem}.archived-item-meta{font-size:.75rem;color:var(--color-text-secondary)}.archived-item-actions{display:flex;gap:6px}.checkin-header-right{display:flex;align-items:center;gap:8px}.sound-toggle{font-size:1.1rem;padding:6px 10px}.weekly-report-card{background:var(--color-surface);border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm);margin-bottom:16px}.weekly-report-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.weekly-report-header h3{font-size:1rem}.weekly-report-period{font-size:.75rem;color:var(--color-text-secondary)}.weekly-report-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.weekly-stat{text-align:center;padding:12px 8px;background:var(--color-bg);border-radius:var(--radius-sm)}.weekly-stat-icon{font-size:1.2rem;margin-bottom:4px}.weekly-stat-value{font-size:1.4rem;font-weight:700;color:var(--color-text)}.weekly-stat-name{font-size:.85rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.weekly-stat-label{font-size:.7rem;color:var(--color-text-secondary);margin-top:2px}.weekly-stat-diff{font-size:.7rem;margin-top:4px;font-weight:500}.weekly-stat-diff.up{color:#16a34a}.weekly-stat-diff.down{color:#ef4444}.weekly-report-badge{margin-top:12px;text-align:center;padding:8px;border-radius:var(--radius-sm);background:linear-gradient(135deg,#d1fae5,#a7f3d0);color:#065f46;font-size:.8rem;font-weight:500}.weekly-report-badge.warn{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#92400e}:root[data-theme=dark] .weekly-stat{background:#0f172a}:root[data-theme=dark] .weekly-report-badge{background:linear-gradient(135deg,#064e3b,#065f46);color:#a7f3d0}:root[data-theme=dark] .weekly-report-badge.warn{background:linear-gradient(135deg,#422006,#451a03);color:#fde68a}@media (max-width: 480px){.app-title{font-size:1.4rem}.stats-summary,.weekly-report-grid{grid-template-columns:1fr}.heatmap-30-grid{grid-template-columns:repeat(6,1fr)}.nav-label{font-size:.7rem}}