:root{font-family:Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.6;font-weight:400;--primary: #3b82f6;--secondary: #8b5cf6;--background: #f8fafc;--card-bg: rgba(255, 255, 255, .9);--text: #1e293b;--border: rgba(0, 0, 0, .1);color:var(--text);background:linear-gradient(135deg,#f0f4f8,#e2e8f0)}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 10% 20%,rgba(59,130,246,.1) 0%,transparent 20%),radial-gradient(circle at 90% 80%,rgba(139,92,246,.1) 0%,transparent 20%),var(--background)}.table-container{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;box-shadow:0 4px 30px #0000001a;padding:2rem;margin:2rem;border:1px solid var(--border)}.table-title{color:var(--primary);font-weight:600;text-align:center;margin-bottom:1.5rem;text-shadow:0 2px 4px rgba(0,0,0,.1)}button{border-radius:12px;border:2px solid transparent;padding:.8em 1.5em;font-size:.95em;font-weight:600;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #3b82f64d}button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #3b82f666;border-color:#fff3}button:focus{outline:3px solid rgba(59,130,246,.4)}.routine-table{border-collapse:separate;border-spacing:0;width:100%}.time-column{background:#3b82f60d;color:var(--primary);font-weight:600}.subject-cell{background:#ffffff80;border:1px solid var(--border);transition:all .2s ease}.subject-cell:hover{background:#3b82f60d}.lunch-break{background:#8b5cf60d;color:var(--secondary);font-style:italic}@media(max-width:768px){.table-container{padding:1rem;margin:1rem}.table-title{font-size:1.5rem}}.app-container{max-width:1200px;margin:0 auto;padding:2rem;min-height:100vh;background:linear-gradient(135deg,#f0f4f8,#e2e8f0)}h1{text-align:center;color:#0f1a2c;margin-bottom:2rem;font-weight:700;font-size:2.5rem;text-shadow:0 2px 4px rgba(0,0,0,.1)}.routine-table{margin-top:2rem;box-shadow:0 4px 30px #0000001a}.navbar{background-color:#71a3e4;padding:0;margin-bottom:20px}.navbar ul{list-style:none;margin:0;padding:0;display:flex;justify-content:center}.navbar li{margin:0}.navbar a{display:block;color:#fff;text-decoration:none;padding:15px 20px;transition:background-color .3s}.navbar a:hover,.navbar a.active{background-color:#555}.home-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;padding:20px;text-align:center;background-color:#f9f9f9}.home-header{margin-bottom:40px}.home-header h1{font-size:2.5em;color:#333;margin-bottom:10px}.home-header .subtitle{font-size:1.1em;color:#666}.workflow-steps{display:flex;flex-direction:column;align-items:center;gap:30px;width:100%;max-width:800px}.step-card{background:#fff;border:1px solid #eee;border-radius:10px;padding:30px;box-shadow:0 4px 12px #00000014;width:100%;transition:transform .3s ease}.step-card:hover{transform:translateY(-5px)}.step-card h2{font-size:1.6em;margin-top:0;color:#0056b3}.setup-step h2{color:#e0a800}.routine-step h2{color:#28a745}.btn-action{display:inline-block;margin-top:20px;padding:12px 25px;border-radius:5px;text-decoration:none;font-weight:700;transition:background-color .3s}.setup-step .btn-action{background-color:#e0a800;color:#333}.setup-step .btn-action:hover{background-color:#c69500}.routine-step .btn-action.primary{background-color:#28a745;color:#fff}.routine-step .btn-action.primary:hover{background-color:#1e7e34}.step-separator{font-size:2em;font-weight:700;color:#ccc}.footer-note{margin-top:40px;font-size:.9em;color:#888}@media(min-width:768px){.workflow-steps{flex-direction:row;align-items:flex-start}.step-separator{margin-top:60px}}.form-container{max-width:600px;margin:0 auto;padding:20px}.form-container h2{text-align:center;margin-bottom:20px;color:#2c3e50}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-weight:700;color:#34495e}.form-group input{width:100%;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:16px;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#3498db;box-shadow:0 0 0 2px #3498db33}.btn-submit{width:100%;padding:12px;background-color:#3498db;color:#fff;border:none;border-radius:4px;font-size:16px;cursor:pointer;transition:background-color .2s}.btn-submit:hover:not(:disabled){background-color:#2980b9}.btn-submit:disabled{background-color:#bdc3c7;cursor:not-allowed}.status-message{margin-top:16px;padding:10px;border-radius:4px;font-weight:700}.status-message.success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.status-message.error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.status-message pre{margin:0;white-space:pre-wrap;font-family:inherit;line-height:1.4}.btn-download-template{margin-top:10px;padding:8px 16px;background-color:#17a2b8;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:14px;transition:background-color .3s ease}.btn-download-template:hover{background-color:#138496}.table-container{max-width:1200px;margin:2rem auto;padding:0 1rem}.table-title{text-align:center;color:#333;margin-bottom:1.5rem;font-size:1.8rem;font-weight:600}.table-wrapper{overflow-x:auto;border:1px solid #e0e0e0;border-radius:12px;box-shadow:0 4px 12px #0000000d;background:#fff}.routine-table{width:100%;border-collapse:collapse;min-width:800px}.routine-table th{background:linear-gradient(to bottom,#f8f9fa,#f1f3f5);padding:1.2rem 1rem;text-align:center;font-weight:600;color:#2d3748;border-bottom:2px solid #e2e8f0;font-size:1rem}.routine-table td{padding:1rem;border-bottom:1px solid #edf2f7;vertical-align:middle;transition:background-color .2s ease}.day-column{width:130px;background:#f8fafc;font-weight:600;color:#1a202c;text-align:center;border-right:1px solid #e2e8f0}.day-cell{font-weight:600;background:#f8fafc;color:#2d3748;text-align:center;border-right:1px solid #e2e8f0}.subject-cell{background:#fff;border-radius:6px;transition:all .2s ease}.subject-cell:hover{background:#f0f9ff;box-shadow:inset 0 0 0 1px #bee3f8}.subject-select{width:100%;padding:10px 36px 10px 12px;font-size:14px;border:1px solid #cbd5e0;border-radius:8px;background-color:#fff;cursor:pointer;color:#2d3748;font-family:inherit;appearance:none;background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%234a5568'%3e%3cpath d='M15.3 9.3a1 1 0 0 1 1.4 1.4l-4 4a1 1 0 0 1-1.4 0l-4-4a1 1 0 0 1 1.4-1.4l3.3 3.29 3.3-3.29z'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right .8rem center;background-size:16px;transition:border-color .2s,box-shadow .2s}.subject-select:focus{outline:none;border-color:#3182ce;box-shadow:0 0 0 3px #4299e133}.subject-select option{padding:8px;font-size:14px}.subject-select option:first-child{color:#a0aec0;font-style:italic}.lunch-header{background-color:#fffbeb!important;color:#975a16}.lunch-cell{background-color:#fffbeb;color:#975a16;text-align:center;font-weight:500;border-right:1px solid #e2e8f0}.lunch-text{font-style:italic;font-weight:500}.loading{text-align:center;padding:2rem;color:#3182ce;font-size:1.1rem}.error-box{text-align:center;padding:2rem}.error-message{color:#e53e3e;background:#fef2f2;padding:12px 16px;border-radius:8px;margin:1rem auto;max-width:600px;border:1px solid #fed7d7;display:flex;align-items:center;justify-content:center;gap:8px}.btn-retry{margin-top:12px;padding:8px 20px;background:#3182ce;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:1rem;transition:background .2s}.btn-retry:hover{background:#2c5282}@media(max-width:768px){.routine-table{font-size:.85rem}.day-column,.day-cell{width:100px;font-size:.9rem}.subject-select{padding:8px 32px 8px 8px;font-size:13px}}.tree-dropdown{display:flex;flex-direction:column;gap:8px;padding:8px 0}.subject-select,.teacher-select{width:100%;padding:8px 36px 8px 12px;font-size:14px;border:1px solid #cbd5e0;border-radius:6px;background:#fff;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%234a5568'%3e%3cpath d='M15.3 9.3a1 1 0 0 1 1.4 1.4l-4 4a1 1 0 0 1-1.4 0l-4-4a1 1 0 0 1 1.4-1.4l3.3 3.29 3.3-3.29z'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right .8rem center;background-size:16px}.subject-select:focus,.teacher-select:focus{outline:none;border-color:#3182ce;box-shadow:0 0 0 3px #4299e133}.btn-clear{align-self:flex-start;padding:4px 8px;background:#e53e3e;color:#fff;border:none;border-radius:4px;font-size:12px;cursor:pointer}.btn-clear:hover{background:#c53030}.cell-display{cursor:pointer;padding:8px;border-radius:6px;background:#f0f9ff;transition:background .2s}.cell-display:hover{background:#e6f7ff}.subject-name{font-weight:600;color:#2b6cb0;font-size:14px}.teacher-name{font-size:13px;color:#4a5568;margin-top:4px}.cell-placeholder{display:flex;align-items:center;justify-content:center;height:100%;color:#a0aec0;font-style:italic;cursor:pointer;border:1px dashed #cbd5e0;border-radius:6px;padding:8px;transition:all .2s}.cell-placeholder:hover{color:#3182ce;border-style:solid}.btn-download{margin-top:20px;padding:10px 20px;background-color:#007bff;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:16px}.btn-download:hover{background-color:#0056b3}.conflict-warning{background-color:#fff3cd;border:1px solid #ffc107;color:#856404;padding:10px 15px;border-radius:4px;margin-bottom:15px;font-weight:500;animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.subject-cell.has-conflict{position:relative}.subject-cell.has-conflict:after{content:"⚠️";position:absolute;top:2px;right:2px;font-size:12px}.conflict-cell{border:2px solid #ffc107!important;background-color:#fff9e6}.conflict-indicator{color:#ff6b6b;font-weight:700;margin-left:5px}.teacher-select option.teacher-unavailable{color:#ff6b6b;font-style:italic}.cell-display.conflict-cell:hover{background-color:#fff3cd;cursor:pointer}.routine-manager{padding:20px}.routine-manager h1{font-size:28px;margin-bottom:10px}.routine-manager p{font-size:16px;color:#666;margin-bottom:20px}.add-routine-btn{padding:12px 24px;font-size:16px;background-color:#2196f3;color:#fff;border:none;border-radius:8px;margin-bottom:20px;cursor:pointer;font-weight:500;transition:background-color .2s ease-in-out}.add-routine-btn:hover{background-color:#1976d2}.routine-block{border:1px solid #ddd;border-radius:8px;padding:20px;margin-bottom:30px;background-color:#f9f9f9}.routine-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.btn-delete-routine{background-color:#e53935;color:#fff;border:none;border-radius:6px;padding:8px 16px;cursor:pointer;font-weight:500;transition:background-color .2s ease-in-out}.btn-delete-routine:hover{background-color:#b71c1c}