:root {
    /* 主要颜色 */
    --primary-color: #fff;
    --secondary-color: #719db9;
    --accent-color: #e74c3c;
    
    /* 文字颜色 */
    --text-color: #333;
    --text-secondary: #666;
    --text-hint: #888;
    --title-color: #000;
    
    /* 背景颜色 */
    --bg-color: #f5f5f5;
    --card-bg: white;
    --panel-bg: #fafafa;
    
    /* 边框颜色 */
    --border-color: #ddd;
    --border-dark: #ccc;
    
    /* 按钮颜色 */
    --btn-primary: var(--secondary-color);
    --btn-primary-hover: var(--secondary-color);
    --btn-secondary: var(--border-color);
    --btn-secondary-hover: var(--border-dark);
    
    /* 提示颜色 */
    --hint-bg: #fffde7;
    --hint-border: #ffee58;
    --error-color: #f44336;
    --success-color: #4caf50;
}

.dark-mode {
    /* 主要颜色 */
    --primary-color: #121212;
    --secondary-color: #1e88e5;
    --accent-color: #c0392b;
    
    /* 文字颜色 */
    --text-color: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-hint: #888888;
    --title-color: #fff;
    
    /* 背景颜色 */
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --panel-bg: #252525;
    
    /* 边框颜色 */
    --border-color: #3a3a3a;
    --border-dark: #444444;
    
    /* 按钮颜色 */
    --btn-primary: var(--secondary-color);
    --btn-primary-hover: #2196f3; 
    --btn-secondary: var(--border-color);
    --btn-secondary-hover: var(--border-dark);
    
    /* 提示颜色 */
    --hint-bg: #2a2a2a;
    --hint-border: #3d3d3d;
    --error-color: #d32f2f;
    --success-color: #388e3c;
}

.hint {
    color: var(--text-hint);
    font-size: 0.9rem;
    margin-top: 10px;
    padding: 10px;
    background-color: var(--hint-bg);
    border-left: 3px solid var(--hint-border);
    border-radius: 4px;
}

.dark-mode .hint {
    color: #ff9800;
    background-color: rgba(0, 0, 0, 0.2);
    border-left-color: #ff9800;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    position: relative;
    min-height: 100vh;
    transition: background-color 0.3s ease;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: var(--title-color);
    font-size: 2rem;
    font-weight: 300;
}

#current-time {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.8;
}

main {
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.alert-panel {
    margin-bottom: 30px;
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.status-normal {
    background-color: #e8f5e9;
    color: #2e7d32;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.status-alert {
    padding: 20px;
    border-radius: 8px;
    animation: pulse 1.5s infinite;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); }
    50% { transform: scale(1.01); box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15); }
    100% { transform: scale(1); box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); }
}

.hidden {
    display: none;
}

#alert-details {
    margin-top: 15px;
    font-size: 1.1rem;
}

.countdown {
    font-weight: bold;
    color: var(--accent-color);
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    background-color: rgba(0, 0, 0, 0.05);
    animation: countdown-pulse 1s infinite;
}

.magnitude, .location, .depth, .intensity {
    font-weight: bold;
}

#waveform-container {
    margin-top: 20px;
    padding: 10px;
    background-color: var(--panel-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* 适应移动端布局 */
@media (max-width: 768px) {
    .waveform-header {
        flex-direction: column;
        gap: 5px;
    }
    .waveform-header > div {
        margin-bottom: 5px;
    }
}

.waveform-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: bold;
    color: var(--text-color);
}

.waveform-time, .waveform-intensity, .waveform-online {
    padding: 5px 10px;
    background-color: var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
}

canvas {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    width: 100%;
    max-width: 100%;
}

footer {
    text-align: center;
    color: var(--text-color);
    font-size: 0.9rem;
    margin-top: 20px;
    opacity: 0.8;
}

/* 设置面板样式 */
.settings-panel {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 300px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background-color: var(--primary-color);
    color: var(--text-color);
    border-radius: 12px 12px 0 0;
    transition: background-color 0.3s ease;
}

.settings-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-color);
}

.settings-header span {
    cursor: pointer;
    font-size: 1.2rem;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.settings-header span:hover {
    opacity: 1;
}

.settings-content {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    overflow-x: auto;
    max-height: 70vh;
    padding: 15px;
}

@media (max-width: 600px) {
    .settings-content {
        flex-direction: column;
        height: auto;
    }
}

.setting-category {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.setting-category:last-child {
    border-bottom: none;
}

.setting-category h4 {
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-weight: 500;
}

.setting-item {
    margin-bottom: 15px;
}

.setting-item label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-secondary);
}

.setting-item input[type="number"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.setting-item input[type="number"]:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.setting-item input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

.setting-item select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23333'%3e%3cpath d='M7 10l5 5 5-5z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.setting-item select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.setting-item button {
    width: 100%;
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    background-color: var(--secondary-color);
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.setting-item button:hover {
    background-color: var(--primary-color);
}

.setting-item a {
    display: block;
    width: 100%;
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    background-color: var(--secondary-color);
    color: #fff;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.setting-item a:hover {
    background-color: var(--secondary-color);
}

#save-settings {
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    width: 100%;
    margin-top: 10px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

#save-settings:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}
/* 设置按钮样式 */
.settings-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--secondary-color);
    color: var(--text-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    z-index: 999;
    font-size: 1.2rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.settings-button:hover {
    background-color: var(--secondary-color);
    transform: scale(1.05);
}

.theme-toggle-container {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.theme-toggle-container select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    width: 100%;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23333'%3e%3cpath d='M7 10l5 5 5-5z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.theme-toggle-container select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.theme-toggle-info {
    font-size: 0.8rem;
    color: var(--text-hint);
    margin-left: 20px;
}

.dark-mode .theme-toggle-container select,
.dark-mode .theme-toggle-container select:focus {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}
.dark-mode .setting-item select {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.dark-mode .theme-toggle-info {
    color: var(--text-hint);
}