/* 默认主题 - 温暖早餐风 */
:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --accent-color: #ff9a9e;
    --background-gradient: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-color: #333;
    --text-light: #666;
    --success-color: #07c160;
    --warning-color: #ff9500;
}

/* 清新绿色主题 */
[data-theme="green"] {
    --primary-color: #2ecc71;
    --secondary-color: #3498db;
    --accent-color: #1abc9c;
    --background-gradient: linear-gradient(135deg, #a8e6cf 0%, #dcedc1 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-color: #2c3e50;
    --text-light: #7f8c8d;
    --success-color: #27ae60;
    --warning-color: #f39c12;
}

/* 深色模式主题 */
[data-theme="dark"] {
    --primary-color: #bb86fc;
    --secondary-color: #03dac6;
    --accent-color: #cf6679;
    --background-gradient: linear-gradient(135deg, #121212 0%, #1e1e1e 100%);
    --card-bg: rgba(30, 30, 30, 0.95);
    --text-color: #e0e0e0;
    --text-light: #b0b0b0;
    --success-color: #00c853;
    --warning-color: #ffab00;
}

/* 梦幻紫色主题 */
[data-theme="purple"] {
    --primary-color: #9b59b6;
    --secondary-color: #8e44ad;
    --accent-color: #e056fd;
    --background-gradient: linear-gradient(135deg, #d4c1ec 0%, #9f7aea 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-color: #2d3436;
    --text-light: #636e72;
    --success-color: #6c5ce7;
    --warning-color: #fdcb6e;
}

/* 简约蓝色主题 */
[data-theme="blue"] {
    --primary-color: #2980b9;
    --secondary-color: #3498db;
    --accent-color: #74b9ff;
    --background-gradient: linear-gradient(135deg, #dfe6e9 0%, #b2bec3 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-color: #2d3436;
    --text-light: #636e72;
    --success-color: #0984e3;
    --warning-color: #fdcb6e;
}

button, .menu-btn, .theme-switcher, .menu-btn-small, .action-btn {
    -webkit-tap-highlight-color: transparent;
    tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

/* 主题切换按钮 */
.theme-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1002;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-panel {
    position: fixed;
    top: 80px;
    right: 20px;
    background: var(--card-bg);
    border-radius: 15px;
    padding: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    z-index: 1001;
    display: none;
    flex-wrap: wrap;
    gap: 10px;
    width: 200px;
}

.theme-panel.open {
    display: flex;
}

.theme-option {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: transform 0.3s ease;
}

.theme-option:hover {
    transform: scale(1.1);
}

.theme-option.active {
    border-color: var(--text-color);
}

.theme-default { background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%); }
.theme-green { background: linear-gradient(135deg, #a8e6cf 0%, #dcedc1 100%); }
.theme-dark { background: linear-gradient(135deg, #121212 0%, #1e1e1e 100%); }
.theme-purple { background: linear-gradient(135deg, #d4c1ec 0%, #9f7aea 100%); }
.theme-blue { background: linear-gradient(135deg, #dfe6e9 0%, #b2bec3 100%); }

@media (max-width: 768px) {
    .theme-panel {
        right: 10px;
        width: 180px;
    }
}