:root{--bg: #0f1117;--surface: #181c26;--surface2:#1e2433;--border: #2a3047;--accent: #4f7cff;--success: #34d399;--danger: #f87171;--warning: #fbbf24;--text: #e8ecf4;--muted: #6b7699;--radius: 10px}[data-theme=light]{--bg: #f0f4f8;--surface: #ffffff;--surface2:#f1f5f9;--border: #d1d9e6;--accent: #3b6fd4;--success: #059669;--danger: #dc2626;--warning: #d97706;--text: #1e2a3a;--muted: #64748b}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,sans-serif;min-height:100vh;-webkit-tap-highlight-color:transparent}h1{font-size:1.6rem;font-weight:700}h2{font-size:1.2rem;font-weight:600}h3{font-size:1rem;font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.55rem 1.2rem;border-radius:var(--radius);border:none;font-size:.95rem;font-weight:600;cursor:pointer;transition:opacity .15s,transform .1s;text-decoration:none;line-height:1}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.btn-primary{background:var(--accent);color:#fff}.btn-danger{background:var(--danger);color:#fff}.btn-success{background:var(--success);color:#fff}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.btn-sm{padding:.35rem .8rem;font-size:.85rem}.btn-lg{padding:.75rem 1.8rem;font-size:1.05rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem}.form-group{display:flex;flex-direction:column;gap:.35rem}.form-group label{font-size:.85rem;color:var(--muted);font-weight:500}input,select,textarea{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:1rem;padding:.55rem .85rem;width:100%;outline:none;transition:border-color .15s;font-family:inherit}input:focus,select:focus,textarea:focus{border-color:var(--accent)}input::placeholder{color:var(--muted)}.navbar{background:var(--surface);border-bottom:1px solid var(--border);padding:.75rem 1.25rem;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}.navbar-brand{font-weight:700;font-size:1.1rem;color:var(--text);display:flex;align-items:center;gap:.5rem}.navbar-actions{display:flex;align-items:center;gap:.5rem}.badge{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.75rem;font-weight:600}.badge-danger{background:color-mix(in srgb,var(--danger) 20%,transparent);color:var(--danger)}.badge-success{background:color-mix(in srgb,var(--success) 20%,transparent);color:var(--success)}.badge-accent{background:color-mix(in srgb,var(--accent) 20%,transparent);color:var(--accent)}.alarm-btn{width:200px;height:200px;border-radius:50%;border:none;font-size:1.3rem;font-weight:800;letter-spacing:.04em;cursor:pointer;transition:transform .15s,box-shadow .15s;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;line-height:1.2;background:var(--danger);color:#fff;box-shadow:0 0 color-mix(in srgb,var(--danger) 40%,transparent)}.alarm-btn:hover:not(:disabled){transform:scale(1.04);box-shadow:0 8px 30px color-mix(in srgb,var(--danger) 40%,transparent)}.alarm-btn:active:not(:disabled){transform:scale(.97)}.alarm-btn.active{background:var(--success);animation:pulse 2s ease-in-out infinite}.alarm-btn.active:hover:not(:disabled){box-shadow:0 8px 30px color-mix(in srgb,var(--success) 40%,transparent)}@keyframes pulse{0%,to{box-shadow:0 0 color-mix(in srgb,var(--success) 40%,transparent)}50%{box-shadow:0 0 0 18px color-mix(in srgb,var(--success) 0%,transparent)}}.alarm-card{background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--danger);border-radius:var(--radius);padding:1rem 1.25rem;display:flex;flex-direction:column;gap:.5rem;animation:slideIn .25s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.alarm-card .teacher-name{font-size:1.15rem;font-weight:700}.alarm-card .room-info{color:var(--muted);font-size:.9rem}.alarm-card .time-info{color:var(--muted);font-size:.85rem}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{padding:.65rem 1rem;text-align:left;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600;font-size:.8rem;text-transform:uppercase}tr:hover td{background:var(--surface2)}.text-muted{color:var(--muted)}.text-danger{color:var(--danger)}.text-success{color:var(--success)}.text-sm{font-size:.85rem}.gap-1{gap:.5rem}.flex{display:flex}.flex-col{display:flex;flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-4{margin-top:2rem}.mb-2{margin-bottom:1rem}.w-full{width:100%}.theme-toggle{background:var(--surface2);border:1px solid var(--border);border-radius:999px;padding:.3rem .7rem;color:var(--muted);cursor:pointer;font-size:.85rem}.theme-toggle:hover{border-color:var(--accent);color:var(--text)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem}.login-card{background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--radius) * 1.5);padding:2rem;width:100%;max-width:380px;display:flex;flex-direction:column;gap:1.5rem}.login-logo{text-align:center;font-size:2.5rem}.login-tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--surface2);border-radius:var(--radius);padding:.2rem;gap:.2rem}.login-tab{padding:.5rem;border:none;border-radius:calc(var(--radius) - 2px);background:transparent;color:var(--muted);font-size:.9rem;font-weight:600;cursor:pointer;transition:background .15s,color .15s}.login-tab.active{background:var(--surface);color:var(--text);box-shadow:0 1px 4px #0003}.pin-display{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);padding:.75rem 1rem;font-size:2rem;text-align:center;letter-spacing:.5em;font-family:monospace;min-height:3.5rem;color:var(--text)}.numpad{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem}.numpad button{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:1.3rem;font-weight:600;padding:.85rem;cursor:pointer;transition:background .1s}.numpad button:hover{background:var(--border)}.numpad button:active{transform:scale(.95)}.numpad .del-btn{color:var(--danger)}.alarm-page{display:flex;flex-direction:column;min-height:100vh}.alarm-main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2rem;padding:2rem 1.5rem}.alarm-greeting{text-align:center;display:flex;flex-direction:column;gap:.3rem}.alarm-status{text-align:center;font-size:.95rem;min-height:1.5em;color:var(--muted)}.alarm-status.active{color:var(--success);font-weight:600}.dashboard-page{display:flex;flex-direction:column;min-height:100vh}.dashboard-main{flex:1;padding:1.5rem;max-width:1100px;margin:0 auto;width:100%}.alarms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;margin-top:1rem}.no-alarms{text-align:center;padding:3rem;color:var(--muted);border:2px dashed var(--border);border-radius:var(--radius)}.live-dot{width:8px;height:8px;border-radius:50%;background:var(--success);display:inline-block;margin-right:.4rem;animation:blink 2s ease-in-out infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:.3}}.alert{padding:.75rem 1rem;border-radius:var(--radius);font-size:.9rem;border:1px solid transparent}.alert-error{background:color-mix(in srgb,var(--danger) 12%,transparent);border-color:color-mix(in srgb,var(--danger) 30%,transparent);color:var(--danger)}.alert-success{background:color-mix(in srgb,var(--success) 12%,transparent);border-color:color-mix(in srgb,var(--success) 30%,transparent);color:var(--success)}@media(max-width:480px){.alarm-btn{width:170px;height:170px;font-size:1.1rem}.dashboard-main{padding:1rem}h1{font-size:1.3rem}}