/* ========================================
   消防设施操作员实操模拟考试系统
   全局样式系统
   ======================================== */

/* ---------- CSS 变量 / 设计令牌 ---------- */

:root {

    /* 主色调 - 深蓝体系 */

    --color-primary: #0A2463;

    --color-primary-dark: #061539;

    --color-primary-light: #1e3a7a;

    --color-primary-accent: #3e92cc;

    

    /* 消防红 - 强调色 */

    --color-danger: #C41E3A;

    --color-danger-dark: #9B152D;

    --color-danger-light: #E63946;

    

    /* 成功色 */

    --color-success: #2E7D32;

    --color-success-light: #4CAF50;

    

    /* 警告色 */

    --color-warning: #F57C00;

    --color-warning-light: #FFB74D;

    

    /* 中性色 */

    --color-white: #ffffff;

    --color-gray-50: #f8fafc;

    --color-gray-100: #f1f5f9;

    --color-gray-200: #e2e8f0;

    --color-gray-300: #cbd5e1;

    --color-gray-400: #94a3b8;

    --color-gray-500: #64748b;

    --color-gray-600: #475569;

    --color-gray-700: #334155;

    --color-gray-800: #1e293b;

    --color-gray-900: #0f172a;

    

    /* 文字颜色 */

    --text-primary: #0f172a;

    --text-secondary: #475569;

    --text-tertiary: #64748b;

    --text-inverse: #ffffff;

    

    /* 背景色 */

    --bg-primary: #ffffff;

    --bg-secondary: #f8fafc;

    --bg-tertiary: #f1f5f9;

    --bg-dark: #0A2463;

    

    /* 边框 */

    --border-color: #e2e8f0;

    --border-radius-sm: 4px;

    --border-radius: 8px;

    --border-radius-lg: 12px;

    --border-radius-xl: 16px;

    

    /* 阴影 */

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);

    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);

    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);

    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    

    /* 间距 */

    --space-1: 4px;

    --space-2: 8px;

    --space-3: 12px;

    --space-4: 16px;

    --space-5: 20px;

    --space-6: 24px;

    --space-8: 32px;

    --space-10: 40px;

    --space-12: 48px;

    --space-16: 64px;

    

    /* 字体 */

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

    

    /* 字体大小 */

    --text-xs: 12px;

    --text-sm: 14px;

    --text-base: 16px;

    --text-lg: 18px;

    --text-xl: 20px;

    --text-2xl: 24px;

    --text-3xl: 30px;

    --text-4xl: 36px;

    

    /* 过渡 */

    --transition-fast: 150ms ease;

    --transition-base: 250ms ease;

    --transition-slow: 350ms ease;

    

    /* 容器宽度 */

    --container-max: 1280px;

    

    /* 顶部导航高度 */

    --header-height: 72px;

}



/* ---------- 基础重置 ---------- */

*, *::before, *::after {

    box-sizing: border-box;

    margin: 0;

    padding: 0;

}



html {

    font-size: 16px;

    -webkit-font-smoothing: antialiased;

    -moz-osx-font-smoothing: grayscale;

}



body {

    font-family: var(--font-sans);

    font-size: var(--text-base);

    line-height: 1.6;

    color: var(--text-primary);

    background-color: var(--bg-secondary);

    min-height: 100vh;

}



img {

    max-width: 100%;

    height: auto;

    display: block;

}



a {

    color: inherit;

    text-decoration: none;

    transition: color var(--transition-fast);

}



ul, ol {

    list-style: none;

}



button {

    font-family: inherit;

    font-size: inherit;

    cursor: pointer;

    border: none;

    background: none;

}



input, textarea, select {

    font-family: inherit;

    font-size: inherit;

}



/* ---------- 布局容器 ---------- */

.container {

    max-width: var(--container-max);

    margin: 0 auto;

    padding: 0 var(--space-6);

}



/* ---------- 顶部导航 ---------- */

.header {

    position: sticky;

    top: 0;

    z-index: 100;

    background: var(--color-white);

    border-bottom: 1px solid var(--border-color);

    height: var(--header-height);

    box-shadow: var(--shadow-sm);

}



.header-inner {

    display: flex;

    align-items: center;

    justify-content: space-between;

    height: 100%;

}



.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    width: 180px;
    height: 48px;
    background: url('/skin/shunli119/images/logo.svg') no-repeat left center;
    background-size: contain;
}

.logo-icon,
.logo-text {
    display: none !important;
}



.nav {

    display: flex;

    align-items: center;

    gap: var(--space-2);

}



.nav-link {

    padding: var(--space-2) var(--space-4);

    font-size: var(--text-sm);

    font-weight: 500;

    color: var(--text-secondary);

    border-radius: var(--border-radius);

    transition: all var(--transition-fast);

    position: relative;

}



.nav-link:hover {

    color: var(--color-primary);

    background: var(--color-gray-50);

}



.nav-link.active {

    color: var(--color-primary);

    background: rgba(10, 36, 99, 0.08);

}



.nav-link.active::after {

    content: '';

    position: absolute;

    bottom: -1px;

    left: 50%;

    transform: translateX(-50%);

    width: 24px;

    height: 3px;

    background: var(--color-danger);

    border-radius: 2px 2px 0 0;

}



.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* 登录状态美化 */
.header-user-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.header-user-info {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 4px;
    padding-right: 12px;
    background: rgba(10, 36, 99, 0.04);
    border-radius: 999px;
    transition: all var(--transition-base);
    text-decoration: none;
    border: 1px solid rgba(10, 36, 99, 0.08);
}

.header-user-info:hover {
    background: rgba(10, 36, 99, 0.08);
    border-color: rgba(10, 36, 99, 0.2);
    transform: translateY(-1px);
}

.header-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    overflow: hidden;
    flex-shrink: 0;
}

.header-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.header-username {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-logout {
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-tertiary);
    background: rgba(0, 0, 0, 0.04);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    border: 1px solid transparent;
}

.btn-logout:hover {
    background: rgba(196, 30, 58, 0.08);
    color: var(--color-danger);
    border-color: rgba(196, 30, 58, 0.2);
}

.btn-logout svg {
    opacity: 0.7;
}

.btn-logout:hover svg {
    opacity: 1;
}






/* ---------- 按钮组件 ---------- */

.btn {

    display: inline-flex;

    align-items: center;

    justify-content: center;

    gap: var(--space-2);

    padding: 10px 20px;

    font-size: var(--text-sm);

    font-weight: 600;

    border-radius: var(--border-radius);

    transition: all var(--transition-base);

    cursor: pointer;

    border: 1px solid transparent;

    white-space: nowrap;

}



.btn-primary {

    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);

    color: var(--text-inverse);

    box-shadow: 0 2px 8px rgba(10, 36, 99, 0.25);

}



.btn-primary:hover {

    transform: translateY(-1px);

    box-shadow: 0 4px 12px rgba(10, 36, 99, 0.35);

}



.btn-danger {

    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);

    color: var(--text-inverse);

    box-shadow: 0 2px 8px rgba(196, 30, 58, 0.3);

}



.btn-danger:hover {

    transform: translateY(-1px);

    box-shadow: 0 4px 12px rgba(196, 30, 58, 0.4);

}



.btn-outline {

    background: var(--color-white);

    color: var(--color-primary);

    border-color: var(--border-color);

}



.btn-outline:hover {

    border-color: var(--color-primary);

    background: rgba(10, 36, 99, 0.04);

}



.btn-ghost {

    background: transparent;

    color: var(--text-secondary);

}



.btn-ghost:hover {

    background: var(--color-gray-100);

    color: var(--text-primary);

}



.btn-lg {

    padding: 14px 28px;

    font-size: var(--text-base);

}



.btn-xl {

    padding: 18px 36px;

    font-size: var(--text-lg);

    border-radius: var(--border-radius-lg);

}



.btn-block {

    width: 100%;

}



/* ---------- 卡片组件 ---------- */

.card {

    background: var(--color-white);

    border-radius: var(--border-radius-lg);

    border: 1px solid var(--border-color);

    box-shadow: var(--shadow-sm);

    transition: all var(--transition-base);

}



.card:hover {

    box-shadow: var(--shadow-md);

}



.card-header {

    padding: var(--space-5) var(--space-6);

    border-bottom: 1px solid var(--border-color);

}



.card-body {

    padding: var(--space-6);

}



.card-footer {

    padding: var(--space-4) var(--space-6);

    border-top: 1px solid var(--border-color);

    background: var(--color-gray-50);

    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);

}



/* ---------- 徽章/标签 ---------- */

.badge {

    display: inline-flex;

    align-items: center;

    padding: 2px 10px;

    font-size: var(--text-xs);

    font-weight: 600;

    border-radius: 9999px;

    line-height: 1.8;

}



.badge-primary {

    background: rgba(10, 36, 99, 0.1);

    color: var(--color-primary);

}



.badge-danger {

    background: rgba(196, 30, 58, 0.1);

    color: var(--color-danger);

}



.badge-success {

    background: rgba(46, 125, 50, 0.1);

    color: var(--color-success);

}



.badge-warning {

    background: rgba(245, 124, 0, 0.1);

    color: var(--color-warning);

}



.badge-gray {

    background: var(--color-gray-100);

    color: var(--text-secondary);

}



/* ---------- 进度条 ---------- */

.progress {

    width: 100%;

    height: 8px;

    background: var(--color-gray-100);

    border-radius: 9999px;

    overflow: hidden;

}



.progress-bar {

    height: 100%;

    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-accent) 100%);

    border-radius: 9999px;

    transition: width var(--transition-slow);

}



.progress-bar.danger {

    background: linear-gradient(90deg, var(--color-danger) 0%, var(--color-danger-light) 100%);

}



.progress-bar.success {

    background: linear-gradient(90deg, var(--color-success) 0%, var(--color-success-light) 100%);

}



/* ---------- Hero 区域（首页） ---------- */

.hero {

    position: relative;

    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1a3a7a 100%);

    color: var(--text-inverse);

    padding: var(--space-16) 0;

    overflow: hidden;

}



.hero::before {

    content: '';

    position: absolute;

    top: 0;

    right: 0;

    width: 600px;

    height: 600px;

    background: radial-gradient(circle, rgba(62, 146, 204, 0.15) 0%, transparent 70%);

    border-radius: 50%;

    transform: translate(30%, -30%);

}



.hero::after {

    content: '';

    position: absolute;

    bottom: 0;

    left: 0;

    width: 400px;

    height: 400px;

    background: radial-gradient(circle, rgba(196, 30, 58, 0.1) 0%, transparent 70%);

    border-radius: 50%;

    transform: translate(-20%, 20%);

}



.hero-inner {

    position: relative;

    z-index: 1;

    display: grid;

    grid-template-columns: 1.2fr 1fr;

    gap: var(--space-12);

    align-items: center;

}



.hero-badge {

    display: inline-flex;

    align-items: center;

    gap: var(--space-2);

    padding: 6px 14px;

    background: rgba(255, 255, 255, 0.1);

    border: 1px solid rgba(255, 255, 255, 0.2);

    border-radius: 9999px;

    font-size: var(--text-sm);

    margin-bottom: var(--space-5);

    backdrop-filter: blur(10px);

}



.hero-badge-dot {

    width: 8px;

    height: 8px;

    background: var(--color-success-light);

    border-radius: 50%;

    box-shadow: 0 0 10px var(--color-success-light);

    animation: pulse 2s infinite;

}



@keyframes pulse {

    0%, 100% { opacity: 1; }

    50% { opacity: 0.5; }

}



.hero-title {

    font-size: var(--text-4xl);

    font-weight: 800;

    line-height: 1.2;

    margin-bottom: var(--space-4);

    letter-spacing: -0.02em;

}



.hero-title .accent {

    color: var(--color-danger-light);

}



.hero-subtitle {

    font-size: var(--text-lg);

    color: rgba(255, 255, 255, 0.75);

    margin-bottom: var(--space-8);

    line-height: 1.7;

}



.hero-actions {

    display: flex;

    gap: var(--space-4);

    flex-wrap: wrap;

}



.hero-stats {

    display: flex;

    gap: var(--space-8);

    margin-top: var(--space-10);

}



.hero-stat-item {

    text-align: left;

}



.hero-stat-number {

    font-size: var(--text-3xl);

    font-weight: 700;

    color: var(--color-white);

}



.hero-stat-label {

    font-size: var(--text-sm);

    color: rgba(255, 255, 255, 0.6);

    margin-top: 4px;

}



.hero-visual {

    position: relative;

    display: flex;

    justify-content: center;

    align-items: center;

}



.hero-visual-card {

    position: relative;

    width: 100%;

    max-width: 420px;

    aspect-ratio: 4/3;

    background: rgba(255, 255, 255, 0.05);

    border: 1px solid rgba(255, 255, 255, 0.1);

    border-radius: var(--border-radius-xl);

    backdrop-filter: blur(20px);

    padding: var(--space-6);

    display: flex;

    flex-direction: column;

    justify-content: center;

    align-items: center;

}



.hero-visual-icon {

    width: 80px;

    height: 80px;

    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);

    border-radius: var(--border-radius-lg);

    display: flex;

    align-items: center;

    justify-content: center;

    margin-bottom: var(--space-4);

    box-shadow: 0 8px 24px rgba(196, 30, 58, 0.4);

}



.hero-visual-title {

    font-size: var(--text-xl);

    font-weight: 600;

    margin-bottom: var(--space-2);

}



.hero-visual-desc {

    font-size: var(--text-sm);

    color: rgba(255, 255, 255, 0.6);

    text-align: center;

}



/* ---------- Section 通用样式 ---------- */

.section {

    padding: var(--space-16) 0;

}



.section-header {

    text-align: center;

    margin-bottom: var(--space-12);

}



.section-title {

    font-size: var(--text-3xl);

    font-weight: 700;

    color: var(--text-primary);

    margin-bottom: var(--space-3);

    letter-spacing: -0.02em;

}



.section-subtitle {

    font-size: var(--text-lg);

    color: var(--text-secondary);

    max-width: 600px;

    margin: 0 auto;

}



/* ---------- 等级卡片（首页） ---------- */

.level-cards {

    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: var(--space-6);

}



.level-card {

    background: var(--color-white);

    border-radius: var(--border-radius-xl);

    border: 1px solid var(--border-color);

    padding: var(--space-8);

    transition: all var(--transition-base);

    position: relative;

    overflow: hidden;

}



.level-card::before {

    content: '';

    position: absolute;

    top: 0;

    left: 0;

    right: 0;

    height: 4px;

    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-accent) 100%);

    transform: scaleX(0);

    transition: transform var(--transition-base);

    transform-origin: left;

}



.level-card:hover {

    transform: translateY(-4px);

    box-shadow: var(--shadow-xl);

    border-color: var(--color-primary-light);

}



.level-card:hover::before {

    transform: scaleX(1);

}



.level-card.danger::before {

    background: linear-gradient(90deg, var(--color-danger) 0%, var(--color-danger-light) 100%);

}



.level-card.danger:hover {

    border-color: var(--color-danger);

}



.level-icon {

    width: 64px;

    height: 64px;

    border-radius: var(--border-radius-lg);

    display: flex;

    align-items: center;

    justify-content: center;

    margin-bottom: var(--space-5);

    font-size: 28px;

}



.level-card .level-icon {

    background: rgba(10, 36, 99, 0.1);

    color: var(--color-primary);

}



.level-card.danger .level-icon {

    background: rgba(196, 30, 58, 0.1);

    color: var(--color-danger);

}



.level-title {

    font-size: var(--text-2xl);

    font-weight: 700;

    color: var(--text-primary);

    margin-bottom: var(--space-2);

}



.level-desc {

    font-size: var(--text-sm);

    color: var(--text-tertiary);

    margin-bottom: var(--space-6);

}



.level-stats {

    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: var(--space-4);

    margin-bottom: var(--space-6);

    padding: var(--space-4);

    background: var(--color-gray-50);

    border-radius: var(--border-radius);

}



.level-stat {

    text-align: center;

}



.level-stat-number {

    font-size: var(--text-xl);

    font-weight: 700;

    color: var(--text-primary);

}



.level-stat-label {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

    margin-top: 2px;

}



.level-progress {

    margin-bottom: var(--space-6);

}



.level-progress-label {

    display: flex;

    justify-content: space-between;

    font-size: var(--text-sm);

    margin-bottom: var(--space-2);

}



.level-progress-label span:first-child {

    color: var(--text-secondary);

}



.level-progress-label span:last-child {

    font-weight: 600;

    color: var(--color-primary);

}



/* ---------- 鉴定点卡片 ---------- */

.points-grid {

    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: var(--space-4);

}



.point-card {

    background: var(--color-white);

    border: 1px solid var(--border-color);

    border-radius: var(--border-radius);

    padding: var(--space-5);

    display: flex;

    gap: var(--space-4);

    transition: all var(--transition-fast);

    cursor: pointer;

}



.point-card:hover {

    border-color: var(--color-primary-light);

    box-shadow: var(--shadow-md);

    transform: translateY(-2px);

}



.point-number {

    flex-shrink: 0;

    width: 44px;

    height: 44px;

    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);

    color: white;

    border-radius: var(--border-radius);

    display: flex;

    align-items: center;

    justify-content: center;

    font-weight: 700;

    font-size: var(--text-sm);

}



.point-card.completed .point-number {

    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-light) 100%);

}



.point-info {

    flex: 1;

    min-width: 0;

}



.point-title {

    font-size: var(--text-sm);

    font-weight: 600;

    color: var(--text-primary);

    margin-bottom: var(--space-1);

    line-height: 1.4;

}



.point-meta {

    display: flex;

    align-items: center;

    gap: var(--space-3);

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



.point-star {

    color: #ffc107;

    font-size: 13px;

    margin-right: 2px;

}



/* ---------- 等级 Tab ---------- */

.level-tabs {

    display: flex;

    justify-content: center;

    gap: var(--space-2);

    margin-bottom: var(--space-8);

}



.level-tab {

    padding: 10px 24px;

    font-size: var(--text-sm);

    font-weight: 500;

    color: var(--text-secondary);

    background: var(--color-white);

    border: 1px solid var(--border-color);

    border-radius: var(--border-radius);

    cursor: pointer;

    transition: all var(--transition-fast);

}



.level-tab:hover {

    color: var(--color-primary);

    border-color: var(--color-primary-light);

}



.level-tab.active {

    background: var(--color-primary);

    color: white;

    border-color: var(--color-primary);

}



/* ---------- 模拟考试页面 ---------- */

.exam-layout {

    display: grid;

    grid-template-columns: 1fr 360px;

    gap: var(--space-6);

    padding: var(--space-6) 0;

    min-height: calc(100vh - var(--header-height));

}



.exam-main {

    display: flex;

    flex-direction: column;

    gap: var(--space-4);

}



/* 模拟器区域 */

.simulator-area {

    flex: 1;

    background: var(--color-gray-800);

    border-radius: var(--border-radius-lg);

    position: relative;

    overflow: hidden;

    min-height: 500px;

    display: flex;

    flex-direction: column;

}



.simulator-header {

    display: flex;

    align-items: center;

    justify-content: space-between;

    padding: var(--space-3) var(--space-5);

    background: rgba(0, 0, 0, 0.3);

    border-bottom: 1px solid rgba(255, 255, 255, 0.1);

    color: white;

}



.simulator-title {

    display: flex;

    align-items: center;

    gap: var(--space-3);

    font-size: var(--text-sm);

    font-weight: 500;

}



.simulator-title::before {

    content: '';

    width: 8px;

    height: 8px;

    background: var(--color-success-light);

    border-radius: 50%;

    box-shadow: 0 0 8px var(--color-success-light);

}



.simulator-actions {

    display: flex;

    gap: var(--space-2);

}



.simulator-btn {

    padding: 6px 12px;

    font-size: var(--text-xs);

    color: rgba(255, 255, 255, 0.7);

    background: rgba(255, 255, 255, 0.1);

    border: 1px solid rgba(255, 255, 255, 0.15);

    border-radius: var(--border-radius-sm);

    transition: all var(--transition-fast);

}



.simulator-btn:hover {

    background: rgba(255, 255, 255, 0.2);

    color: white;

}



.simulator-content {

    flex: 1;

    display: flex;

    align-items: center;

    justify-content: center;

    background: linear-gradient(135deg, #1a2744 0%, #0d1b2a 100%);

    position: relative;

}



.simulator-placeholder {

    text-align: center;

    color: rgba(255, 255, 255, 0.4);

    padding: var(--space-8);

}



.simulator-placeholder-icon {

    width: 80px;

    height: 80px;

    margin: 0 auto var(--space-4);

    border: 2px dashed rgba(255, 255, 255, 0.2);

    border-radius: var(--border-radius-lg);

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 36px;

}



.simulator-placeholder-text {

    font-size: var(--text-lg);

    margin-bottom: var(--space-2);

    color: rgba(255, 255, 255, 0.6);

}



.simulator-placeholder-desc {

    font-size: var(--text-sm);

    color: rgba(255, 255, 255, 0.35);

}



/* 模拟设备示意图 - 火灾报警控制器 */

.mock-controller {

    width: 85%;

    max-width: 600px;

    background: linear-gradient(145deg, #2a3a5a 0%, #1a2744 100%);

    border-radius: var(--border-radius-lg);

    padding: var(--space-6);

    box-shadow: 

        0 20px 60px rgba(0, 0, 0, 0.5),

        inset 0 1px 0 rgba(255, 255, 255, 0.1);

    border: 1px solid rgba(255, 255, 255, 0.1);

}



.mock-controller-screen {

    background: #0a1628;

    border-radius: var(--border-radius);

    padding: var(--space-4);

    margin-bottom: var(--space-5);

    border: 2px solid #1e3a5f;

    min-height: 120px;

    position: relative;

}



.mock-screen-header {

    display: flex;

    justify-content: space-between;

    align-items: center;

    margin-bottom: var(--space-3);

    padding-bottom: var(--space-2);

    border-bottom: 1px solid rgba(62, 146, 204, 0.3);

}



.mock-screen-title {

    color: #5dade2;

    font-size: var(--text-sm);

    font-weight: 600;

}



.mock-screen-status {

    display: flex;

    gap: var(--space-2);

}



.mock-status-dot {

    width: 8px;

    height: 8px;

    border-radius: 50%;

    background: #4CAF50;

    box-shadow: 0 0 6px #4CAF50;

}



.mock-status-dot.warning {

    background: #FF9800;

    box-shadow: 0 0 6px #FF9800;

}



.mock-screen-content {

    color: #7eb8da;

    font-size: var(--text-xs);

    font-family: 'Courier New', monospace;

    line-height: 1.8;

}



.mock-controller-indicators {

    display: grid;

    grid-template-columns: repeat(4, 1fr);

    gap: var(--space-3);

    margin-bottom: var(--space-5);

}



.mock-indicator {

    display: flex;

    flex-direction: column;

    align-items: center;

    gap: var(--space-2);

    padding: var(--space-3);

    background: rgba(0, 0, 0, 0.2);

    border-radius: var(--border-radius);

    border: 1px solid rgba(255, 255, 255, 0.05);

}



.mock-indicator-light {

    width: 16px;

    height: 16px;

    border-radius: 50%;

    background: #333;

    border: 2px solid #555;

}



.mock-indicator-light.active {

    background: #4CAF50;

    border-color: #66BB6A;

    box-shadow: 0 0 10px #4CAF50;

}



.mock-indicator-light.alarm {

    background: #f44336;

    border-color: #ef5350;

    box-shadow: 0 0 10px #f44336;

    animation: blink 1s infinite;

}



@keyframes blink {

    0%, 100% { opacity: 1; }

    50% { opacity: 0.4; }

}



.mock-indicator-label {

    font-size: 10px;

    color: rgba(255, 255, 255, 0.6);

    text-align: center;

}



.mock-controller-keypad {

    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: var(--space-2);

}



.mock-key {

    aspect-ratio: 1.5;

    background: linear-gradient(145deg, #3a4a6a 0%, #2a3a5a 100%);

    border: 1px solid rgba(255, 255, 255, 0.1);

    border-radius: var(--border-radius-sm);

    color: rgba(255, 255, 255, 0.7);

    font-size: var(--text-sm);

    font-weight: 600;

    display: flex;

    align-items: center;

    justify-content: center;

    cursor: pointer;

    transition: all var(--transition-fast);

}



.mock-key:hover {

    background: linear-gradient(145deg, #4a5a7a 0%, #3a4a6a 100%);

    color: white;

}



.mock-key:active {

    transform: scale(0.95);

}



.mock-key.function {

    background: linear-gradient(145deg, var(--color-primary-light) 0%, var(--color-primary) 100%);

    color: white;

}



.mock-key.alarm {

    background: linear-gradient(145deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);

    color: white;

}



/* 考试侧边栏 */

.exam-sidebar {

    display: flex;

    flex-direction: column;

    gap: var(--space-4);

}



.exam-info-card {

    background: var(--color-white);

    border-radius: var(--border-radius-lg);

    border: 1px solid var(--border-color);

    overflow: hidden;

}



.exam-info-header {

    padding: var(--space-4) var(--space-5);

    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);

    color: white;

}



.exam-info-title {

    font-size: var(--text-base);

    font-weight: 600;

    margin-bottom: 4px;

}



.exam-info-subtitle {

    font-size: var(--text-xs);

    opacity: 0.8;

}



.exam-timer {

    padding: var(--space-5);

    text-align: center;

    border-bottom: 1px solid var(--border-color);

}



.timer-label {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

    margin-bottom: var(--space-2);

    text-transform: uppercase;

    letter-spacing: 0.05em;

}



.timer-display {

    font-size: var(--text-3xl);

    font-weight: 700;

    color: var(--text-primary);

    font-variant-numeric: tabular-nums;

    letter-spacing: -0.02em;

}



.timer-display.warning {

    color: var(--color-warning);

}



.timer-display.danger {

    color: var(--color-danger);

}



.exam-question-info {

    padding: var(--space-5);

    border-bottom: 1px solid var(--border-color);

}



.question-meta {

    display: flex;

    justify-content: space-between;

    align-items: center;

    margin-bottom: var(--space-3);

}



.question-number {

    font-size: var(--text-sm);

    font-weight: 600;

    color: var(--color-primary);

}



.question-points {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



.question-title {

    font-size: var(--text-base);

    font-weight: 600;

    color: var(--text-primary);

    margin-bottom: var(--space-3);

    line-height: 1.5;

}



.question-req {

    font-size: var(--text-sm);

    color: var(--text-secondary);

    background: var(--color-gray-50);

    padding: var(--space-3);

    border-radius: var(--border-radius);

    border-left: 3px solid var(--color-primary);

}



.question-req-label {

    font-size: var(--text-xs);

    font-weight: 600;

    color: var(--color-primary);

    margin-bottom: 4px;

}



.exam-operations {

    padding: var(--space-5);

    border-bottom: 1px solid var(--border-color);

    max-height: 200px;

    overflow-y: auto;

}



.operations-title {

    font-size: var(--text-sm);

    font-weight: 600;

    color: var(--text-primary);

    margin-bottom: var(--space-3);

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.operations-count {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

    font-weight: 400;

}



.operation-list {

    display: flex;

    flex-direction: column;

    gap: var(--space-2);

}



.operation-item {

    display: flex;

    align-items: center;

    gap: var(--space-3);

    padding: var(--space-2) var(--space-3);

    background: var(--color-gray-50);

    border-radius: var(--border-radius-sm);

    font-size: var(--text-xs);

}



.operation-step {

    flex-shrink: 0;

    width: 20px;

    height: 20px;

    background: var(--color-gray-200);

    color: var(--text-secondary);

    border-radius: 50%;

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 10px;

    font-weight: 600;

}



.operation-item.done .operation-step {

    background: var(--color-success);

    color: white;

}



.operation-item.current .operation-step {

    background: var(--color-primary);

    color: white;

    animation: pulse 1.5s infinite;

}



.operation-text {

    flex: 1;

    color: var(--text-secondary);

}



.operation-item.done .operation-text {

    color: var(--text-tertiary);

    text-decoration: line-through;

}



.operation-item.current .operation-text {

    color: var(--text-primary);

    font-weight: 500;

}



.exam-actions {

    padding: var(--space-5);

    display: flex;

    flex-direction: column;

    gap: var(--space-3);

}



/* 题目导航 */

.question-nav {

    background: var(--color-white);

    border-radius: var(--border-radius-lg);

    border: 1px solid var(--border-color);

    padding: var(--space-5);

}



.question-nav-title {

    font-size: var(--text-sm);

    font-weight: 600;

    color: var(--text-primary);

    margin-bottom: var(--space-4);

}



.question-nav-grid {

    display: grid;

    grid-template-columns: repeat(5, 1fr);

    gap: var(--space-2);

}



.question-nav-item {

    aspect-ratio: 1;

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: var(--text-xs);

    font-weight: 600;

    border-radius: var(--border-radius-sm);

    background: var(--color-gray-100);

    color: var(--text-secondary);

    cursor: pointer;

    transition: all var(--transition-fast);

    border: 2px solid transparent;

}



.question-nav-item:hover {

    background: var(--color-gray-200);

}



.question-nav-item.current {

    background: var(--color-primary);

    color: white;

}



.question-nav-item.answered {

    background: rgba(46, 125, 50, 0.15);

    color: var(--color-success);

    border-color: var(--color-success);

}



.question-nav-item.current.answered {

    background: var(--color-success);

    color: white;

}



.question-nav-legend {

    display: flex;

    gap: var(--space-4);

    margin-top: var(--space-4);

    padding-top: var(--space-4);

    border-top: 1px solid var(--border-color);

}



.legend-item {

    display: flex;

    align-items: center;

    gap: var(--space-2);

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



.legend-dot {

    width: 12px;

    height: 12px;

    border-radius: 3px;

}



.legend-dot.current {

    background: var(--color-primary);

}



.legend-dot.answered {

    background: var(--color-success);

}



.legend-dot.unanswered {

    background: var(--color-gray-200);

}



/* ---------- 考试结果页面 ---------- */

.result-container {

    max-width: 900px;

    margin: var(--space-12) auto;

}



.result-header {

    text-align: center;

    margin-bottom: var(--space-10);

}



.result-status {

    display: inline-flex;

    flex-direction: column;

    align-items: center;

    gap: var(--space-3);

    padding: var(--space-8) var(--space-12);

    border-radius: var(--border-radius-xl);

    background: var(--color-white);

    border: 1px solid var(--border-color);

    box-shadow: var(--shadow-lg);

}



.result-status-icon {

    width: 80px;

    height: 80px;

    border-radius: 50%;

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 40px;

}



.result-status.pass .result-status-icon {

    background: rgba(46, 125, 50, 0.1);

    color: var(--color-success);

}



.result-status.fail .result-status-icon {

    background: rgba(196, 30, 58, 0.1);

    color: var(--color-danger);

}



.result-status-text {

    font-size: var(--text-3xl);

    font-weight: 700;

}



.result-status.pass .result-status-text {

    color: var(--color-success);

}



.result-status.fail .result-status-text {

    color: var(--color-danger);

}



.result-status-desc {

    font-size: var(--text-sm);

    color: var(--text-tertiary);

}



.result-score-section {

    display: grid;

    grid-template-columns: 1fr 2fr;

    gap: var(--space-6);

    margin-bottom: var(--space-8);

}



.score-display {

    background: var(--color-white);

    border-radius: var(--border-radius-xl);

    border: 1px solid var(--border-color);

    padding: var(--space-8);

    text-align: center;

    display: flex;

    flex-direction: column;

    justify-content: center;

}



.score-number {

    font-size: 72px;

    font-weight: 800;

    line-height: 1;

    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-accent) 100%);

    -webkit-background-clip: text;

    -webkit-text-fill-color: transparent;

    background-clip: text;

    margin-bottom: var(--space-2);

}



.score-label {

    font-size: var(--text-sm);

    color: var(--text-tertiary);

    text-transform: uppercase;

    letter-spacing: 0.1em;

}



.score-pass-line {

    margin-top: var(--space-4);

    font-size: var(--text-sm);

    color: var(--text-secondary);

}



.score-pass-line span {

    color: var(--color-success);

    font-weight: 600;

}



.result-stats {

    background: var(--color-white);

    border-radius: var(--border-radius-xl);

    border: 1px solid var(--border-color);

    padding: var(--space-6);

}



.result-stats-title {

    font-size: var(--text-lg);

    font-weight: 600;

    color: var(--text-primary);

    margin-bottom: var(--space-5);

}



.result-stat-grid {

    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: var(--space-4);

}



.result-stat-item {

    text-align: center;

    padding: var(--space-4);

    background: var(--color-gray-50);

    border-radius: var(--border-radius);

}



.result-stat-number {

    font-size: var(--text-2xl);

    font-weight: 700;

    margin-bottom: 4px;

}



.result-stat-number.correct {

    color: var(--color-success);

}



.result-stat-number.wrong {

    color: var(--color-danger);

}



.result-stat-number.incomplete {

    color: var(--text-tertiary);

}



.result-stat-label {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



.result-time {

    margin-top: var(--space-5);

    padding-top: var(--space-5);

    border-top: 1px solid var(--border-color);

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.result-time-label {

    font-size: var(--text-sm);

    color: var(--text-secondary);

}



.result-time-value {

    font-size: var(--text-lg);

    font-weight: 600;

    color: var(--text-primary);

}



/* 详细评分 */

.detail-score {

    background: var(--color-white);

    border-radius: var(--border-radius-xl);

    border: 1px solid var(--border-color);

    overflow: hidden;

}



.detail-score-header {

    padding: var(--space-5) var(--space-6);

    border-bottom: 1px solid var(--border-color);

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.detail-score-title {

    font-size: var(--text-lg);

    font-weight: 600;

    color: var(--text-primary);

}



.detail-score-list {

    padding: 0;

}



.detail-score-item {

    display: flex;

    align-items: center;

    padding: var(--space-4) var(--space-6);

    border-bottom: 1px solid var(--border-color);

    gap: var(--space-4);

}



.detail-score-item:last-child {

    border-bottom: none;

}



.detail-item-number {

    flex-shrink: 0;

    width: 32px;

    height: 32px;

    background: var(--color-gray-100);

    color: var(--text-secondary);

    border-radius: var(--border-radius-sm);

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: var(--text-sm);

    font-weight: 600;

}



.detail-item-content {

    flex: 1;

    min-width: 0;

}



.detail-item-title {

    font-size: var(--text-sm);

    font-weight: 500;

    color: var(--text-primary);

    margin-bottom: 2px;

}



.detail-item-category {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



.detail-item-score {

    flex-shrink: 0;

    text-align: right;

}



.detail-item-score-value {

    font-size: var(--text-lg);

    font-weight: 700;

}



.detail-item-score-value.full {

    color: var(--color-success);

}



.detail-item-score-value.partial {

    color: var(--color-warning);

}



.detail-item-score-value.zero {

    color: var(--color-danger);

}



.detail-item-score-total {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



.result-actions {

    display: flex;

    justify-content: center;

    gap: var(--space-4);

    margin-top: var(--space-8);

}



/* ---------- 用户中心 ---------- */

.user-center-layout {

    display: grid;

    grid-template-columns: 240px 1fr;

    gap: var(--space-6);

    padding: var(--space-8) 0;

}



.user-sidebar {

    background: var(--color-white);

    border-radius: var(--border-radius-lg);

    border: 1px solid var(--border-color);

    overflow: hidden;

    height: fit-content;

}



.user-profile-card {

    padding: var(--space-6);

    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);

    color: white;

    text-align: center;

}



.user-profile-avatar {

    width: 64px;

    height: 64px;

    border-radius: 50%;

    background: rgba(255, 255, 255, 0.2);

    margin: 0 auto var(--space-3);

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: var(--text-2xl);

    font-weight: 600;

    border: 2px solid rgba(255, 255, 255, 0.3);

}



.user-profile-name {

    font-size: var(--text-lg);

    font-weight: 600;

    margin-bottom: 4px;

}



.user-profile-level {

    font-size: var(--text-xs);

    opacity: 0.8;

}



.user-nav {

    padding: var(--space-3) 0;

}



.user-nav-item {

    display: flex;

    align-items: center;

    gap: var(--space-3);

    padding: var(--space-3) var(--space-5);

    font-size: var(--text-sm);

    color: var(--text-secondary);

    cursor: pointer;

    transition: all var(--transition-fast);

    border-left: 3px solid transparent;

}



.user-nav-item:hover {

    background: var(--color-gray-50);

    color: var(--text-primary);

}



.user-nav-item.active {

    background: rgba(10, 36, 99, 0.06);

    color: var(--color-primary);

    border-left-color: var(--color-primary);

    font-weight: 500;

}



.user-nav-icon {

    width: 18px;

    height: 18px;

    flex-shrink: 0;

}



.user-content {

    display: flex;

    flex-direction: column;

    gap: var(--space-6);

}



.user-section-title {

    font-size: var(--text-xl);

    font-weight: 600;

    color: var(--text-primary);

}



/* 数据概览卡片 */

.stats-overview {

    display: grid;

    grid-template-columns: repeat(4, 1fr);

    gap: var(--space-4);

}



.stat-card {

    background: var(--color-white);

    border-radius: var(--border-radius-lg);

    border: 1px solid var(--border-color);

    padding: var(--space-5);

}



.stat-card-header {

    display: flex;

    justify-content: space-between;

    align-items: flex-start;

    margin-bottom: var(--space-3);

}



.stat-card-icon {

    width: 40px;

    height: 40px;

    border-radius: var(--border-radius);

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 18px;

}



.stat-card-icon.blue {

    background: rgba(10, 36, 99, 0.1);

    color: var(--color-primary);

}



.stat-card-icon.green {

    background: rgba(46, 125, 50, 0.1);

    color: var(--color-success);

}



.stat-card-icon.red {

    background: rgba(196, 30, 58, 0.1);

    color: var(--color-danger);

}



.stat-card-icon.orange {

    background: rgba(245, 124, 0, 0.1);

    color: var(--color-warning);

}



.stat-card-value {

    font-size: var(--text-2xl);

    font-weight: 700;

    color: var(--text-primary);

    margin-bottom: 4px;

}



.stat-card-label {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



.stat-card-change {

    font-size: var(--text-xs);

    display: flex;

    align-items: center;

    gap: 2px;

}



.stat-card-change.up {

    color: var(--color-success);

}



.stat-card-change.down {

    color: var(--color-danger);

}



/* 学习进度 */

.progress-section {

    background: var(--color-white);

    border-radius: var(--border-radius-lg);

    border: 1px solid var(--border-color);

    padding: var(--space-6);

}



.progress-section-header {

    display: flex;

    justify-content: space-between;

    align-items: center;

    margin-bottom: var(--space-6);

}



.progress-list {

    display: flex;

    flex-direction: column;

    gap: var(--space-5);

}



.progress-item {

    display: flex;

    flex-direction: column;

    gap: var(--space-2);

}



.progress-item-header {

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.progress-item-title {

    font-size: var(--text-sm);

    font-weight: 500;

    color: var(--text-primary);

}



.progress-item-percent {

    font-size: var(--text-sm);

    font-weight: 600;

    color: var(--color-primary);

}



.progress-item-meta {

    font-size: var(--text-xs);

    color: var(--text-tertiary);

}



/* 考试记录表格 */

.record-table-wrap {

    background: var(--color-white);

    border-radius: var(--border-radius-lg);

    border: 1px solid var(--border-color);

    overflow: hidden;

}



.record-table {

    width: 100%;

    border-collapse: collapse;

}



.record-table th {

    padding: var(--space-4) var(--space-5);

    text-align: left;

    font-size: var(--text-xs);

    font-weight: 600;

    color: var(--text-tertiary);

    text-transform: uppercase;

    letter-spacing: 0.05em;

    background: var(--color-gray-50);

    border-bottom: 1px solid var(--border-color);

}



.record-table td {

    padding: var(--space-4) var(--space-5);

    font-size: var(--text-sm);

    color: var(--text-secondary);

    border-bottom: 1px solid var(--border-color);

}



.record-table tr:last-child td {

    border-bottom: none;

}



.record-table tr:hover td {

    background: var(--color-gray-50);

}



.record-score {

    font-weight: 600;

    color: var(--text-primary);

}



.record-score.pass {

    color: var(--color-success);

}



.record-score.fail {

    color: var(--color-danger);

}



/* ---------- 登录页面 ---------- */

.auth-page {

    min-height: 100vh;

    display: flex;

    align-items: center;

    justify-content: center;

    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1a3a7a 100%);

    position: relative;

    overflow: hidden;

    padding: var(--space-6);

}



.auth-page::before {

    content: '';

    position: absolute;

    top: -200px;

    right: -200px;

    width: 600px;

    height: 600px;

    background: radial-gradient(circle, rgba(62, 146, 204, 0.15) 0%, transparent 70%);

    border-radius: 50%;

}



.auth-page::after {

    content: '';

    position: absolute;

    bottom: -150px;

    left: -150px;

    width: 500px;

    height: 500px;

    background: radial-gradient(circle, rgba(196, 30, 58, 0.1) 0%, transparent 70%);

    border-radius: 50%;

    transform: translate(-20%, 20%);

}



.auth-container {

    position: relative;

    z-index: 1;

    width: 100%;

    max-width: 460px;

}



.auth-logo {

    text-align: center;

    margin-bottom: var(--space-8);

}



.auth-logo-icon {

    width: 64px;

    height: 64px;

    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);

    border-radius: var(--border-radius-lg);

    display: inline-flex;

    align-items: center;

    justify-content: center;

    color: white;

    font-weight: 700;

    font-size: var(--text-2xl);

    margin-bottom: var(--space-4);

    box-shadow: 0 4px 16px rgba(196, 30, 58, 0.4);

}



.auth-logo-title {

    font-size: var(--text-2xl);

    font-weight: 700;

    color: white;

    margin-bottom: var(--space-2);

}



.auth-logo-subtitle {

    font-size: var(--text-sm);

    color: rgba(255, 255, 255, 0.6);

}



.auth-card {

    background: var(--color-white);

    border-radius: var(--border-radius-xl);

    padding: var(--space-8);

    box-shadow: var(--shadow-xl);

}



.auth-tabs {

    display: flex;

    margin-bottom: var(--space-6);

    border-bottom: 2px solid var(--border-color);

}



.auth-tab {

    flex: 1;

    padding: var(--space-3) 0;

    font-size: var(--text-base);

    font-weight: 600;

    color: var(--text-tertiary);

    text-align: center;

    cursor: pointer;

    position: relative;

    transition: color var(--transition-fast);

}



.auth-tab.active {

    color: var(--color-primary);

}



.auth-tab.active::after {

    content: '';

    position: absolute;

    bottom: -2px;

    left: 0;

    right: 0;

    height: 2px;

    background: var(--color-primary);

    border-radius: 2px 2px 0 0;

}



.auth-form-group {

    margin-bottom: var(--space-5);

}



.auth-form-label {

    display: block;

    font-size: var(--text-sm);

    font-weight: 500;

    color: var(--text-primary);

    margin-bottom: var(--space-2);

}



.auth-form-input {

    width: 100%;

    padding: 12px 16px;

    font-size: var(--text-base);

    color: var(--text-primary);

    background: var(--color-gray-50);

    border: 1.5px solid var(--border-color);

    border-radius: var(--border-radius);

    transition: all var(--transition-fast);

    outline: none;

}



.auth-form-input:focus {

    border-color: var(--color-primary);

    background: var(--color-white);

    box-shadow: 0 0 0 3px rgba(10, 36, 99, 0.1);

}



.auth-form-input::placeholder {

    color: var(--text-tertiary);

}



.auth-input-icon {

    position: relative;

}



.auth-input-icon .auth-form-input {

    padding-left: 44px;

}



.auth-input-icon .input-icon {

    position: absolute;

    left: 14px;

    top: 50%;

    transform: translateY(-50%);

    color: var(--text-tertiary);

    font-size: 16px;

}



.captcha-row {

    display: flex;

    gap: var(--space-3);

}



.captcha-row .auth-form-input {

    flex: 1;

}



.captcha-img {

    width: 120px;

    height: 44px;

    background: var(--color-gray-100);

    border: 1.5px solid var(--border-color);

    border-radius: var(--border-radius);

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: var(--text-lg);

    font-weight: 700;

    color: var(--color-primary);

    letter-spacing: 4px;

    font-family: 'Courier New', monospace;

    cursor: pointer;

    user-select: none;

    background-image: linear-gradient(45deg, transparent 48%, rgba(0,0,0,0.05) 50%, transparent 52%),

                      linear-gradient(-45deg, transparent 48%, rgba(0,0,0,0.05) 50%, transparent 52%);

    background-size: 10px 10px;

}



.auth-options {

    display: flex;

    justify-content: space-between;

    align-items: center;

    margin-bottom: var(--space-6);

}



.auth-remember {

    display: flex;

    align-items: center;

    gap: var(--space-2);

    font-size: var(--text-sm);

    color: var(--text-secondary);

    cursor: pointer;

}



.auth-remember input {

    width: 16px;

    height: 16px;

    accent-color: var(--color-primary);

}



.auth-forgot {

    font-size: var(--text-sm);

    color: var(--color-primary);

    font-weight: 500;

}



.auth-forgot:hover {

    text-decoration: underline;

}



.auth-submit {

    width: 100%;

    padding: 14px;

    font-size: var(--text-base);

    font-weight: 600;

    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);

    color: white;

    border: none;

    border-radius: var(--border-radius);

    cursor: pointer;

    transition: all var(--transition-base);

    box-shadow: 0 4px 12px rgba(10, 36, 99, 0.25);

}



.auth-submit:hover {

    transform: translateY(-1px);

    box-shadow: 0 6px 16px rgba(10, 36, 99, 0.35);

}



.auth-footer {

    text-align: center;

    margin-top: var(--space-6);

    font-size: var(--text-sm);

    color: var(--text-secondary);

}



.auth-footer a {

    color: var(--color-primary);

    font-weight: 500;

}



.auth-footer a:hover {

    text-decoration: underline;

}



/* ---------- 页脚 ---------- */

.footer {

    background: var(--color-gray-800);

    color: rgba(255, 255, 255, 0.6);

    padding: var(--space-12) 0 var(--space-6);

    margin-top: var(--space-16);

}



.footer-inner {

    display: grid;

    grid-template-columns: 2fr 1fr 1fr 1fr;

    gap: var(--space-8);

    margin-bottom: var(--space-8);

}



.footer-brand {

    max-width: 300px;

}



.footer-logo {

    display: flex;

    align-items: center;

    gap: var(--space-3);

    margin-bottom: var(--space-4);

}



.footer-logo-icon {

    width: 40px;

    height: 40px;

    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);

    border-radius: var(--border-radius);

    display: flex;

    align-items: center;

    justify-content: center;

    color: white;

    font-weight: 700;

}



.footer-logo-text {

    font-size: var(--text-lg);

    font-weight: 700;

    color: white;

}



.footer-desc {

    font-size: var(--text-sm);

    line-height: 1.7;

}



.footer-col-title {

    font-size: var(--text-sm);

    font-weight: 600;

    color: white;

    margin-bottom: var(--space-4);

}



.footer-links {

    display: flex;

    flex-direction: column;

    gap: var(--space-3);

}



.footer-link {

    font-size: var(--text-sm);

    color: rgba(255, 255, 255, 0.5);

    transition: color var(--transition-fast);

}



.footer-link:hover {

    color: white;

}



.footer-bottom {

    padding-top: var(--space-6);

    border-top: 1px solid rgba(255, 255, 255, 0.1);

    display: flex;

    justify-content: space-between;

    align-items: center;

    font-size: var(--text-xs);

}



/* ---------- 工具类 ---------- */

.text-center { text-align: center; }

.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }

.text-danger { color: var(--color-danger); }

.text-success { color: var(--color-success); }

.text-secondary { color: var(--text-secondary); }

.text-tertiary { color: var(--text-tertiary); }



.font-bold { font-weight: 700; }

.font-medium { font-weight: 500; }



.mt-2 { margin-top: var(--space-2); }

.mt-4 { margin-top: var(--space-4); }

.mt-6 { margin-top: var(--space-6); }

.mt-8 { margin-top: var(--space-8); }

.mb-2 { margin-bottom: var(--space-2); }

.mb-4 { margin-bottom: var(--space-4); }

.mb-6 { margin-bottom: var(--space-6); }



.flex { display: flex; }

.items-center { align-items: center; }

.justify-between { justify-content: space-between; }

.gap-2 { gap: var(--space-2); }

.gap-3 { gap: var(--space-3); }

.gap-4 { gap: var(--space-4); }



/* ---------- 模式控制 ---------- */

/* 练习模式与考试模式的显隐切换 */

.mode-exam .practice-only {

    display: none !important;

}

.mode-practice .exam-only {

    display: none !important;

}



/* ---------- 响应式 ---------- */

@media (max-width: 1024px) {

    .hero-inner {

        grid-template-columns: 1fr;

    }

    

    .level-cards {

        grid-template-columns: 1fr;

    }

    

    .points-grid {

        grid-template-columns: repeat(2, 1fr);

    }

    

    .exam-layout {

        grid-template-columns: 1fr;

    }

    

    .user-center-layout {

        grid-template-columns: 1fr;

    }

    

    .stats-overview {

        grid-template-columns: repeat(2, 1fr);

    }

    

    .result-score-section {

        grid-template-columns: 1fr;

    }

    

    .footer-inner {

        grid-template-columns: 1fr 1fr;

    }

}



@media (max-width: 640px) {

    :root {

        --header-height: 60px;

    }

    

    .nav {

        display: none;

    }

    

    .points-grid {

        grid-template-columns: 1fr;

    }

    

    .hero-title {

        font-size: var(--text-2xl);

    }

    

    .section-title {

        font-size: var(--text-2xl);

    }

    

    .stats-overview {

        grid-template-columns: 1fr;

    }

    

    .footer-inner {

        grid-template-columns: 1fr;

    }

    

    .question-nav-grid {

        grid-template-columns: repeat(5, 1fr);

    }

    

    .result-stat-grid {

        grid-template-columns: 1fr;

    }

}

/* 新的用户信息链接样式 */
.user-profile-link {
    display: flex;
    align-items: center;
    gap: var(--space-2); /* 用户名和图标之间的间距 */
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--space-2) var(--space-3); /* 增加点击区域和视觉空间 */
    border-radius: var(--border-radius); /* 轻微圆角 */
    transition: background-color var(--transition-fast);
}

.user-profile-link:hover {
    background-color: var(--color-gray-100); /* 鼠标悬停时的背景色 */
}

.user-name {
    /* 用户名文本样式 */
    font-size: var(--text-base); /* 调整字体大小 */
    white-space: nowrap; /* 防止用户名换行 */
    overflow: hidden;
    text-overflow: ellipsis; /* 如果用户名过长显示省略号 */
    max-width: 100px; /* 限制用户名的最大宽度，防止过长 */
}

.user-icon {
    /* 用户图标/下拉箭头容器 */
    width: 16px; /* 箭头图标大小 */
    height: 16px;
    display: flex; /* 使用flexbox来居中SVG */
    align-items: center;
    justify-content: center;
    color: var(--text-secondary); /* 箭头的颜色，可以根据需要调整 */
    transition: transform var(--transition-fast); /* 为可能的旋转添加过渡效果 */
    /* 移除背景色和圆角，因为它现在是一个箭头 */
    background-color: transparent;
    border-radius: 0;
}

.user-profile-link:hover .user-icon {
    /* 鼠标悬停时箭头的颜色变化 */
    color: var(--color-primary);
}

/* 响应式调整 (如果需要) */
@media (max-width: 768px) {
    .user-profile-link {
        padding: var(--space-2); /* 移动端调整内边距 */
    }
    .user-name {
        max-width: 80px; /* 移动端限制用户名的最大宽度 */
    }
}