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UI,sans-serif;background:var(--bg);color:var(--text-primary);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased}#app{width:100%;min-height:100vh;display:flex;flex-direction:column}button{cursor:pointer;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;font-family:inherit;padding:10px 20px;transition:all var(--transition);letter-spacing:.01em;outline:none}button:hover{transform:translateY(-1px)}button:active{transform:translateY(0)}button:focus-visible{box-shadow:0 0 0 3px var(--primary-glow)}button.primary{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:var(--text-on-primary);box-shadow:var(--shadow-primary)}button.primary:hover{background:linear-gradient(135deg,#ff9060 0%,#d9734c 100%);box-shadow:0 6px 24px #ffa07a73}button.secondary{background:var(--bg-subtle);color:var(--text-secondary);border:1.5px solid var(--border)}button.secondary:hover{background:var(--bg-hover);border-color:var(--primary-light);color:var(--primary-dark)}button.danger{background:#FED7D7;color:#c53030;border:1.5px solid #FCA5A5}button.danger:hover{background:#FC8181;color:#fff;border-color:#fc8181}button:disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important}input,select,textarea{padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:14px;font-family:inherit;color:var(--text-primary);background:var(--bg-card);transition:all var(--transition);width:100%;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}input::placeholder{color:var(--text-muted)}select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23718096'%3E%3Cpath d='M5.23 7.21a.75.75 0 011.06.02L10 11.17l3.71-3.94a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0L5.21 8.27a.75.75 0 01.02-1.06z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:36px;cursor:pointer}.alert{padding:12px 16px;border-radius:var(--radius-sm);margin-bottom:16px;font-size:14px;font-weight:500;display:flex;align-items:center;gap:8px}.alert.success{background:#F0FFF4;color:#276749;border:1.5px solid #9AE6B4}.alert.error{background:#FFF5F5;color:#c53030;border:1.5px solid #FC8181}.alert.warning{background:#FFFBEB;color:#92400e;border:1.5px solid #FCD34D}.alert.info{background:#EBF8FF;color:#2b6cb0;border:1.5px solid #90CDF4}.card{background:var(--bg-card);border-radius:var(--radius-lg);border:1.5px solid var(--border);box-shadow:var(--shadow-md);padding:32px}.loading-spinner{display:flex;align-items:center;justify-content:center;gap:10px;color:var(--text-muted);font-size:14px;padding:40px}.spinner{width:22px;height:22px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .75s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.fadeInUp{animation:fadeInUp .38s ease forwards}.fadeIn{animation:fadeIn .3s ease forwards}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:600;letter-spacing:.02em}.badge-primary{background:var(--primary-ultra-light);color:var(--primary-dark);border:1px solid var(--primary-light)}.badge-time{background:#FFFBEB;color:#92400e;border:1px solid #FCD34D}.badge-teacher{background:#EBF8FF;color:#2b6cb0;border:1px solid #90CDF4}.badge-dept{background:#F0FFF4;color:#276749;border:1px solid #9AE6B4}.badge-success{background:#F0FFF4;color:#276749}