/* 全局样式 */
:root {
    --primary-color: #007AFF;
    --bg-color: #F2F2F7;
    --card-bg: #FFFFFF;
    --text-main: #1C1C1E;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
}

#app {
    width: 100%;
    max-width: 500px; /* 模拟手机宽度 */
    min-height: 100vh;
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
}

.screen {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.hidden { display: none !important; }

/* 选项样式 */
.option-item {
    padding: 15px;
    margin-bottom: 12px;
    border: 1.5px solid #E5E5EA;
    border-radius: 12px;
    transition: all 0.2s;
    font-size: 16px;
    cursor: pointer;
}

.option-item.selected {
    background-color: #E8F2FF;
    border-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 500;
}

/* 按钮样式 */
button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 10px;
    width: 100%;
}

button.secondary {
    background-color: #E5E5EA;
    color: #3A3A3C;
}

/* 结果区域 */
.result-box {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    background-color: #F8F8F8;
    border-left: 5px solid var(--primary-color);
}

.setting-item {
    background: #f9f9f9;
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 15px;
}
.input-inline {
    margin-top: 10px;
    font-size: 14px;
    color: #666;
}
input[type="number"] {
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 5px;
    text-align: center;
}
.header {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    font-size: 14px;
    color: #888;
}

/* 单选按钮组风格 */
.radio-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.radio-item {
    flex: 1;
    padding: 12px;
    text-align: center;
    border: 1.5px solid #E5E5EA;
    border-radius: 10px;
    background: #fff;
    cursor: pointer;
    font-size: 14px;
}

.radio-item.selected {
    border-color: #007AFF;
    background: #E8F2FF;
    color: #007AFF;
    font-weight: bold;
}

/* 导航按钮布局 */
.nav-btns {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.nav-btns button {
    flex: 1;
    margin-top: 0 !important;
}

/* 结果卡片 */
.score-card {
    background: #fff;
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

.score-num {
    font-size: 60px;
    font-weight: 800;
    color: #007AFF;
}

.score-num span { font-size: 20px; margin-left: 5px; }

input[type="number"] {
    width: 60px;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-align: center;
}