/* 全局重置 */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
    transition: background 1s ease;
    overflow: hidden;
}

/* 背景主题 */
.bg-sunny { background: linear-gradient(135deg, #f6d365 0%, #fda085 100%); }
.bg-cloudy { background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%); }
.bg-rainy { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.bg-default { background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%); }

/* 卡片容器 */
.container { width: 100%; max-width: 400px; padding: 20px; }
.card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
}

/* 头部时间 */
.header h1 { font-size: 3rem; font-weight: 700; color: #2c3e50; margin-bottom: 5px; }
.header p { font-size: 1.1rem; color: #7f8c8d; margin-bottom: 20px; }

/* 状态标签 */
.status-area { margin-bottom: 25px; min-height: 60px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.badge {
    padding: 8px 16px;
    border-radius: 50px;
    font-weight: bold;
    font-size: 0.9rem;
    color: white;
    margin-bottom: 10px;
    display: inline-block;
}
.badge.rest { background-color: #2ecc71; box-shadow: 0 4px 15px rgba(46, 204, 113, 0.4); }
.badge.work { background-color: #e74c3c; box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4); }
.holiday-text { font-size: 1.2rem; font-weight: bold; color: #d35400; }

/* 考试区域布局 */
.exam-section { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.exam-box {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    align-items: center;
    text-align: left;
    transition: transform 0.2s;
}
.exam-box:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.9); }
.exam-box .icon { font-size: 1.5rem; margin-right: 15px; }
.exam-box strong { display: block; font-size: 0.85rem; color: #7f8c8d; }
.exam-box span { font-size: 1rem; font-weight: bold; color: #2c3e50; }

/* 隐藏类 */
.hidden { display: none !important; }

/* 底部 */
.footer { border-top: 1px solid rgba(0,0,0,0.05); padding-top: 15px; font-size: 0.9rem; color: #95a5a6; }