.timer-container{
    max-width:650px;
    margin:50px auto;
    padding:35px;
    background:#fff;
    border-radius:16px;
    box-shadow:0 8px 24px rgba(15,23,42,.08);
    animation:fadeUp .4s ease;
    text-align:center;
}

.timer-container h1{
    margin-bottom:10px;
    color:#2563eb;
}

.timer-container > p.desc{
    margin-bottom:25px;
    color:#666;
    line-height:1.6;
}

.mode-tabs{
    display:flex;
    gap:10px;
    margin-bottom:30px;
    background:#f1f5f9;
    padding:6px;
    border-radius:12px;
}

.mode-tabs button{
    flex:1;
    padding:12px;
    border:none;
    background:transparent;
    border-radius:8px;
    font-family:'Kanit',sans-serif;
    font-weight:600;
    font-size:16px;
    color:#555;
    cursor:pointer;
    transition:.2s;
}

.mode-tabs button.active{
    background:#2563eb;
    color:#fff;
    box-shadow:0 2px 8px rgba(37,99,235,.3);
}

.mode-panel{
    display:none;
}

.mode-panel.active{
    display:block;
}

.time-display{
    font-size:72px;
    font-weight:700;
    color:#1e293b;
    margin:20px 0;
    font-variant-numeric:tabular-nums;
    letter-spacing:2px;
}

.time-display.warning{
    color:#dc2626;
    animation:pulse 1s infinite;
}

@keyframes pulse{
    0%,100%{ opacity:1; }
    50%{ opacity:.4; }
}

.countdown-inputs{
    display:flex;
    justify-content:center;
    gap:14px;
    margin-bottom:25px;
}

.countdown-inputs .field{
    display:flex;
    flex-direction:column;
    align-items:center;
}

.countdown-inputs label{
    font-size:13px;
    color:#888;
    margin-bottom:6px;
}

.countdown-inputs input{
    width:70px;
    padding:12px;
    font-size:22px;
    text-align:center;
    font-family:'Kanit',sans-serif;
    border:2px solid #ddd;
    border-radius:10px;
}

.countdown-inputs input:focus{
    border-color:#2563eb;
    outline:none;
}

.preset-buttons{
    display:flex;
    justify-content:center;
    gap:10px;
    flex-wrap:wrap;
    margin-bottom:25px;
}

.preset-buttons button{
    padding:8px 16px;
    border:2px solid #ddd;
    background:#fff;
    border-radius:20px;
    font-family:'Kanit',sans-serif;
    font-weight:600;
    font-size:14px;
    cursor:pointer;
    transition:.2s;
}

.preset-buttons button:hover{
    border-color:#2563eb;
    color:#2563eb;
}

.control-buttons{
    display:flex;
    justify-content:center;
    gap:14px;
    flex-wrap:wrap;
}

.control-buttons button{
    padding:16px 32px;
    font-size:18px;
    font-family:'Kanit',sans-serif;
    font-weight:700;
    border:none;
    border-radius:10px;
    cursor:pointer;
    transition:.25s;
    color:#fff;
}

.btn-start{
    background:#16a34a;
}

.btn-start:hover{
    background:#15803d;
    transform:translateY(-2px);
}

.btn-pause{
    background:#f59e0b;
}

.btn-pause:hover{
    background:#d97706;
    transform:translateY(-2px);
}

.btn-reset{
    background:#64748b;
}

.btn-reset:hover{
    background:#475569;
    transform:translateY(-2px);
}

.btn-lap{
    background:#2563eb;
}

.btn-lap:hover{
    background:#1d4ed8;
    transform:translateY(-2px);
}

.control-buttons button:disabled{
    background:#cbd5e1;
    cursor:not-allowed;
    transform:none;
}

.lap-list{
    margin-top:25px;
    max-height:220px;
    overflow-y:auto;
    text-align:left;
}

.lap-list table{
    width:100%;
    border-collapse:collapse;
}

.lap-list th,
.lap-list td{
    padding:10px;
    border-bottom:1px solid #e5e7eb;
    text-align:center;
    font-variant-numeric:tabular-nums;
}

.lap-list th{
    color:#888;
    font-weight:600;
    font-size:13px;
}

.back{
    display:block;
    margin-top:30px;
    text-align:center;
    font-weight:600;
    color:#2563eb;
    text-decoration:none;
}

.back:hover{
    text-decoration:underline;
}

.disclaimer{
    margin-top:25px;
    padding:14px 18px;
    background:#fffbeb;
    border:1px solid #fde68a;
    border-radius:10px;
    font-size:14px;
    color:#78350f;
    line-height:1.6;
    text-align:left;
}

@media (max-width:768px){

    .timer-container{
        margin:20px auto;
        padding:22px;
    }

    .time-display{
        font-size:52px;
    }

    .countdown-inputs input{
        width:56px;
        font-size:18px;
        padding:10px;
    }

    .control-buttons button{
        padding:14px 22px;
        font-size:16px;
    }
}

@media (max-width:480px){

    .timer-container{
        margin:15px;
        padding:18px;
    }

    .time-display{
        font-size:42px;
        letter-spacing:1px;
    }

    .mode-tabs button{
        font-size:14px;
        padding:10px;
    }
}