/* 倒计时器样式 */
.timer {
    position: fixed;
    left: 20px; /* 与历史记录框对齐 */
    bottom: 160px; /* 在历史记录框上方 */
    width: 200px;
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid #444;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    user-select: none;
}

.timer-header {
    padding: 8px 12px;
    background: rgba(68, 68, 68, 0.8);
    border-bottom: 1px solid #555;
    border-radius: 8px 8px 0 0;
    font-weight: bold;
    text-align: center;
    cursor: move;
}

.timer.dragging {
    opacity: 0.8;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.timer-content {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.timer-display {
    font-size: 40px;
    font-weight: 600;
    text-align: center;
    padding: 12px 16px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    box-sizing: border-box;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    letter-spacing: 2px;
    line-height: 1;
}

.timer-display.highlight {
    background: rgba(52, 152, 219, 0.3);
    border-color: #3498db;
    color: #3498db;
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.5);
}

.timer-display.warning {
    background: rgba(241, 196, 15, 0.3);
    border-color: #f1c40f;
    color: #f1c40f;
    box-shadow: 0 0 10px rgba(241, 196, 15, 0.5);
}

.timer-display.danger {
    background: rgba(231, 76, 60, 0.3);
    border-color: #e74c3c;
    color: #e74c3c;
    box-shadow: 0 0 10px rgba(231, 76, 60, 0.5);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0.3; }
    100% { opacity: 1; }
}

.timer-display.blink {
    animation: blink 0.3s ease-in-out;
}

.timer-controls {
    display: flex;
    gap: 8px;
    width: 100%;
}

.timer-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.2s;
    flex: 1;
}

.timer-btn-start {
    background: #27ae60;
}

.timer-btn-start:hover {
    background: #1f884b;
    transform: translateY(-1px);
}

.timer-btn-pause {
    background: #f39c12;
}

.timer-btn-pause:hover {
    background: #d4820a;
    transform: translateY(-1px);
}

.timer-btn-reset {
    background: #3498db;
}

.timer-btn-reset:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

.timer-btn:active {
    transform: translateY(0);
}

.timer-btn:disabled {
    background: #666;
    cursor: not-allowed;
    transform: none;
}