:root{--primary: #6366f1;--primary-dark: #4f46e5;--primary-light: #818cf8;--success: #10b981;--success-light: #34d399;--danger: #ef4444;--warning: #f59e0b;--bg: #f8fafc;--bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--card: #ffffff;--text: #0f172a;--text-secondary: #64748b;--text-muted: #94a3b8;--border: #e2e8f0;--border-light: #f1f5f9;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, .25)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:linear-gradient(180deg,#f8fafc 0%,#f1f5f9 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14px;font-size:13px;background:transparent;color:var(--text-secondary);border:1px solid var(--border);border-radius:8px;transition:all .2s ease}.logout-btn:hover{color:var(--danger);border-color:var(--danger);background:rgba(239,68,68,.05)}.today-users-card{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;border-radius:24px;padding:20px 24px;margin-bottom:24px;box-shadow:0 10px 30px #667eea40;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.today-users-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(255,255,255,.1) 0%,transparent 100%);pointer-events:none}.today-users-card:hover{transform:translateY(-3px);box-shadow:0 15px 40px #667eea59}.today-users-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;position:relative;z-index:1}.today-label{font-size:15px;font-weight:600;letter-spacing:.3px}.today-count{font-size:13px;font-weight:600;background:rgba(255,255,255,.25);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:5px 12px;border-radius:12px}.today-users-list{display:flex;flex-wrap:wrap;gap:8px;min-height:34px;align-items:center;position:relative;z-index:1}.user-chip{background:rgba(255,255,255,.2);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:6px 14px;border-radius:12px;font-size:13px;font-weight:500;transition:all .2s ease}.user-chip:hover{background:rgba(255,255,255,.3);transform:translateY(-1px)}.user-chip.more{background:rgba(255,255,255,.35)}.empty-tip{font-size:13px;opacity:.85;font-style:italic}.calendar-card,.records-card,.login-card{background:var(--card);border-radius:24px;padding:24px;box-shadow:var(--shadow-md);border:1px solid var(--border-light);transition:box-shadow .3s ease}.calendar-card:hover,.records-card:hover{box-shadow:var(--shadow-lg)}.login-card{text-align:center;width:100%;max-width:400px;padding:40px 32px;background:linear-gradient(135deg,#ffffff 0%,#f8fafc 100%)}.login-card h2{margin:0 0 12px;font-size:28px;font-weight:700;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-card p{margin:0 0 32px;color:var(--text-secondary);font-size:15px;line-height:1.6}.calendar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding:0 4px}.calendar-header h3{margin:0;font-size:20px;font-weight:700;color:var(--text);letter-spacing:-.3px}.icon-btn{width:40px;height:40px;border-radius:12px;border:none;background:var(--bg);color:var(--text);font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;font-weight:300}.icon-btn:hover{background:var(--primary);color:#fff;transform:scale(1.05);box-shadow:var(--shadow-sm)}.icon-btn:active{transform:scale(.95)}.day-list{display:flex;flex-direction:column;gap:12px;overflow-y:auto;max-height:calc(100vh - 400px);min-height:220px;padding-right:4px}.day-list::-webkit-scrollbar{width:6px}.day-list::-webkit-scrollbar-track{background:transparent}.day-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:6px}.day-list::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.day-row{display:flex;align-items:flex-start;gap:16px;padding:16px;border-radius:16px;background:var(--bg);cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);min-height:70px;border:1px solid transparent}.day-row:hover{background:#f1f5f9;border-color:var(--border);transform:translate(2px)}.day-row.today{box-shadow:inset 0 0 0 2px var(--primary);background:linear-gradient(135deg,rgba(99,102,241,.05) 0%,rgba(129,140,248,.05) 100%)}.day-row.checked{background:linear-gradient(135deg,rgba(16,185,129,.05) 0%,rgba(52,211,153,.05) 100%)}.day-row.today.checked{background:linear-gradient(135deg,rgba(99,102,241,.08) 0%,rgba(16,185,129,.08) 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20px;font-size:15px;color:var(--text-secondary);background:var(--card);border-radius:16px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light)}.month-summary strong{color:var(--text);font-weight:700;font-size:18px}.status{padding:6px 14px;border-radius:12px;background:#fee2e2;color:var(--danger);font-size:13px;font-weight:600}.status.checked{background:#d1fae5;color:var(--success)}.hint{text-align:center;color:var(--text-muted);font-size:13px;margin-top:14px}.records-toggle{width:100%;margin-top:20px;padding:14px;background:var(--card);color:var(--primary);border:1px solid var(--border);border-radius:14px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease}.records-toggle:hover{background:var(--bg);border-color:var(--primary);box-shadow:var(--shadow-sm)}.fab{position:fixed;bottom:32px;left:50%;transform:translate(-50%);width:76px;height:76px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;font-size:38px;font-weight:300;cursor:pointer;box-shadow:0 12px 32px #6366f166,0 4px 12px #6366f133;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;justify-content:center;z-index:50}.fab:before{content:"";position:absolute;top:-4px;right:-4px;bottom:-4px;left:-4px;border-radius:50%;background:linear-gradient(135deg,var(--primary-light) 0%,var(--primary) 100%);opacity:0;transition:opacity .3s ease;z-index:-1}.fab:hover{transform:translate(-50%) scale(1.08);box-shadow:0 16px 44px #6366f180,0 6px 16px #6366f14d}.fab:hover:before{opacity:.3}.fab:active{transform:translate(-50%) scale(.96)}.fab.done{background:linear-gradient(135deg,var(--success) 0%,#059669 100%);box-shadow:0 12px 32px #10b98166,0 4px 12px #10b98133}.fab.done:hover{box-shadow:0 16px 44px #10b98180,0 6px 16px #10b9814d}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:flex-end;justify-content:center;z-index:100;animation:fadeIn .25s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--card);width:100%;max-width:540px;border-radius:28px 28px 0 0;padding:28px;animation:slideUp .3s cubic-bezier(.4,0,.2,1);max-height:85vh;overflow-y:auto;box-shadow:var(--shadow-xl)}.modal-content.day-detail{padding-bottom:36px}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.modal-header h3{margin:0;font-size:22px;font-weight:700;color:var(--text);letter-spacing:-.3px}.close-btn{width:36px;height:36px;border-radius:50%;border:none;background:var(--bg);color:var(--text-secondary);font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;transition:all .2s ease}.close-btn:hover{background:var(--danger);color:#fff;transform:rotate(90deg)}textarea,input[type=text]{width:100%;padding:16px;border:2px solid var(--border);border-radius:16px;font-size:16px;font-family:inherit;resize:none;margin-bottom:18px;outline:none;transition:all .2s ease;background:var(--bg)}textarea:focus,input[type=text]:focus{border-color:var(--primary);background:white;box-shadow:0 0 0 4px #6366f11a}.image-upload{display:block;width:100%;padding:16px;border:2px dashed var(--border);border-radius:16px;text-align:center;color:var(--text-secondary);cursor:pointer;margin-bottom:18px;transition:all .2s ease;background:var(--bg)}.image-upload:hover{border-color:var(--primary);color:var(--primary);background:rgba(99,102,241,.05)}.image-upload input{display:none}.preview{margin-bottom:18px;text-align:center}.preview img{max-width:100%;max-height:240px;border-radius:16px;box-shadow:var(--shadow-md)}.modal-actions{display:flex;gap:12px}.modal-actions button{flex:1;padding:16px;border-radius:16px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s ease}.modal-actions button[type=submit]{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;border:none;box-shadow:0 4px 12px #6366f14d}.modal-actions button[type=submit]:hover{transform:translateY(-2px);box-shadow:0 6px 16px #6366f166}.modal-actions button[type=submit]:active{transform:translateY(0)}.modal-actions .btn-secondary{background:var(--bg);color:var(--text);border:2px solid var(--border)}.modal-actions .btn-secondary:hover{background:var(--border-light);border-color:var(--text-muted)}button:disabled{opacity:.6;cursor:not-allowed}.message{text-align:center;margin:0 0 16px;font-size:14px;font-weight:500;padding:12px;border-radius:12px}.success{color:var(--success);background:rgba(16,185,129,.1)}.error{color:var(--danger);background:rgba(239,68,68,.1)}.records-card{margin-top:24px}.records-card h3{margin:0 0 12px;font-size:20px;font-weight:700;color:var(--text)}.stats{margin:0 0 24px;color:var(--text-secondary);font-size:15px;padding:12px 16px;background:var(--bg);border-radius:12px}.stats strong{color:var(--primary);font-weight:700;font-size:18px}.record-list{list-style:none;padding:0;margin:0}.record-item{display:flex;justify-content:space-between;align-items:center;padding:16px;margin-bottom:12px;background:var(--bg);border-radius:14px;transition:all .2s ease;border:1px solid transparent}.record-item:hover{background:white;border-color:var(--border);box-shadow:var(--shadow-sm)}.record-item:last-child{margin-bottom:0}.record-info strong{display:block;font-size:15px;margin-bottom:4px;color:var(--text);font-weight:600}.record-info p{margin:0;color:var(--text-secondary);font-size:14px;line-height:1.5}.record-item img{width:68px;height:68px;object-fit:cover;border-radius:14px;margin-left:14px;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow-sm)}.record-item img:hover{transform:scale(1.05);box-shadow:var(--shadow-md)}.image-preview-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.9);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:200;padding:24px;animation:fadeIn .25s ease}.image-preview-overlay img{max-width:100%;max-height:100%;border-radius:20px;object-fit:contain;box-shadow:var(--shadow-xl)}.empty{text-align:center;color:var(--text-muted);padding:32px 0;font-style:italic}@media (max-width: 420px){.app{padding:16px 16px 120px}.brand h1{font-size:22px}.brand p{font-size:12px}.calendar-card,.records-card,.login-card{padding:18px;border-radius:20px}.calendar-header h3{font-size:18px}.icon-btn{width:36px;height:36px;font-size:20px}.day-list{max-height:calc(100vh - 360px);min-height:160px;gap:10px}.day-row{padding:14px;gap:14px}.day-meta .day-number{font-size:20px}.calendar-weekdays span{font-size:12px}.calendar-grid{gap:4px}.calendar-cell{font-size:12px;border-radius:8px;padding-top:4px}.cell-user-name,.cell-user-more{font-size:8px}.today-users-card{padding:16px 18px;margin-bottom:18px;border-radius:20px}.today-label{font-size:14px}.user-chip{padding:5px 12px;font-size:12px}.month-summary{font-size:14px;padding:12px 16px}.month-summary strong{font-size:16px}.fab{width:64px;height:64px;font-size:32px;bottom:24px}.modal-content{padding:24px;border-radius:24px 24px 0 0}.modal-header h3{font-size:20px}.modal-actions{flex-direction:column}.modal-actions button{padding:14px}.record-item img{width:60px;height:60px}.share-actions{flex-direction:column}}.user-groups{display:flex;flex-direction:column;gap:20px}.user-group{background:var(--bg);border-radius:18px;padding:18px;border:1px solid var(--border-light);transition:all .2s ease}.user-group:hover{border-color:var(--border);box-shadow:var(--shadow-sm)}.user-group-title{display:flex;align-items:center;gap:12px;margin-bottom:14px}.user-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;box-shadow:0 2px 8px #6366f14d}.user-record-count{margin-left:auto;font-size:13px;color:var(--text-muted);background:var(--card);padding:4px 10px;border-radius:8px;font-weight:500}.empty-note{color:var(--text-muted);font-style:italic}.share-section{text-align:center}.share-tip{color:var(--text-secondary);font-size:15px;margin:0 0 20px;line-height:1.5}.share-actions{display:flex;gap:12px;margin-bottom:20px}.btn-share{flex:1;padding:16px;border-radius:16px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s ease;border:none}.btn-share.text{background:var(--bg);color:var(--text);border:2px solid var(--border)}.btn-share.text:hover{background:var(--border-light);border-color:var(--text-muted)}.btn-share.poster{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;box-shadow:0 4px 12px #6366f14d}.btn-share.poster:hover{transform:translateY(-2px);box-shadow:0 6px 16px #6366f166}.btn-share:disabled{opacity:.6;cursor:not-allowed;transform:none}.poster-preview{margin-bottom:20px;animation:fadeIn .3s ease}.poster-canvas{width:100%;height:auto;border-radius:16px;box-shadow:var(--shadow-md);background:var(--bg)}.poster-actions{display:flex;gap:12px;margin-top:14px}.poster-actions button{flex:1;padding:14px;border-radius:14px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;border:none}.poster-actions button:not(.btn-secondary){background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;box-shadow:0 4px 12px #6366f14d}.poster-actions button:not(.btn-secondary):hover{transform:translateY(-2px);box-shadow:0 6px 16px #6366f166}.poster-actions .btn-secondary{background:var(--bg);color:var(--text);border:2px solid var(--border)}.poster-actions .btn-secondary:hover{background:var(--border-light);border-color:var(--text-muted)}.admin-page .main-content{max-width:100%}.admin-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.admin-toolbar h3{margin:0;font-size:18px;font-weight:700}.admin-refresh{padding:8px 16px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--primary);font-size:13px;font-weight:600;cursor:pointer;transition:all .2s ease}.admin-refresh:hover:not(:disabled){background:var(--primary);color:#fff;border-color:var(--primary)}.admin-refresh:disabled{opacity:.5;cursor:not-allowed}.admin-table{width:100%;border-collapse:collapse;font-size:14px}.admin-table th{text-align:left;padding:12px 8px;border-bottom:2px solid var(--border);color:var(--text-secondary);font-weight:600;font-size:13px;white-space:nowrap}.admin-table td{padding:12px 8px;border-bottom:1px solid var(--border-light);vertical-align:middle}.admin-table tr:last-child td{border-bottom:none}.admin-table td strong{font-size:15px;color:var(--text)}.admin-table input[type=text]{width:120px;padding:8px 12px;border-radius:10px;font-size:14px;margin-bottom:0}.admin-time{color:var(--text-muted);font-size:12px;white-space:nowrap}.admin-actions{display:flex;gap:6px}.admin-btn{padding:6px 12px;border-radius:8px;border:none;font-size:13px;font-weight:600;cursor:pointer;transition:all .2s ease;white-space:nowrap}.admin-btn.edit{background:rgba(99,102,241,.1);color:var(--primary)}.admin-btn.edit:hover{background:var(--primary);color:#fff}.admin-btn.save{background:rgba(16,185,129,.1);color:var(--success)}.admin-btn.save:hover{background:var(--success);color:#fff}.admin-btn.cancel{background:var(--bg);color:var(--text-secondary);border:1px solid var(--border)}.admin-btn.cancel:hover{background:var(--border-light)}.admin-btn.del{background:rgba(239,68,68,.1);color:var(--danger)}.admin-btn.del:hover{background:var(--danger);color:#fff}.btn-recheckin{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;border:none;box-shadow:0 4px 12px #6366f14d}.btn-recheckin:hover{transform:translateY(-2px);box-shadow:0 6px 16px #6366f166}.btn-recheckin:active{transform:translateY(0)}.today-checkin-display{margin-bottom:20px}.checkin-note-display{margin:12px 0 0;padding:14px 16px;background:var(--bg);border-radius:14px;color:var(--text);font-size:15px;line-height:1.6}