/* 前台样式 - 现代化专业设计 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 - 清爽淡蓝色系 */
    --primary-color: #1d4ed8;      /* 主蓝色 */
    --primary-dark: #1e3a8a;       /* 深蓝色 */
    --primary-light: #60a5fa;      /* 浅蓝色 */
    --secondary-color: #0ea5e9;    /* 辅助蓝青色 */
    --accent-color: #38bdf8;       /* 强调高亮蓝 */
    
    /* 渐变色（整体偏淡的蓝色渐变） */
    --gradient-primary: linear-gradient(135deg, #e0f2fe 0%, #bfdbfe 40%, #93c5fd 100%);
    --gradient-modern: linear-gradient(135deg, #eff6ff 0%, #e0f2fe 40%, #bfdbfe 100%);
    --gradient-card: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    
    /* 中性色 */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* 状态色 */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Roboto, 'Helvetica Neue', Arial, sans-serif;
    /* 背景：上半部分稍深、下半部分更浅，保证标题对比度又不压抑 */
    background: linear-gradient(
        180deg,
        #1e40af 0%,     /* 顶部深蓝，标题更清晰 */
        #2563eb 35%,   /* 过渡蓝 */
        #bfdbfe 75%,   /* 下半部分淡蓝 */
        #e5f0ff 100%   /* 底部最浅 */
    );
    background-attachment: fixed;
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* 头部 */
.header {
    text-align: center;
    color: white;
    padding: var(--spacing-2xl) var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    z-index: 0;
}

.header > * {
    position: relative;
    z-index: 1;
}

.header h1 {
    font-size: clamp(32px, 5vw, 56px);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: clamp(14px, 2vw, 18px);
    opacity: 0.95;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
}

.header .user-info {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.header .user-info span,
.header .user-info a {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    font-size: 14px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header .user-info a:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 主内容 */
.main-content {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-2xl);
    margin-bottom: var(--spacing-xl);
    backdrop-filter: blur(10px);
}

/* 表单卡片 */
.analysis-form-container {
    margin-bottom: var(--spacing-xl);
}

.form-card {
    background: var(--gradient-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.form-card h2 {
    font-size: clamp(20px, 3vw, 28px);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-weight: 600;
}

/* 分段信息显示 */
.segment-info {
    margin-bottom: var(--spacing-lg);
}

.segment-card {
    /* 分段信息卡片使用稍深一点的蓝色渐变，突出但不刺眼 */
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    color: #f9fafb;
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.segment-icon {
    font-size: 48px;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.segment-content h3 {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: 20px;
    font-weight: 600;
}

.segment-text {
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
    opacity: 0.95;
}

.score-highlight,
.rank-highlight {
    font-size: 28px;
    font-weight: 700;
    color: #ffd700;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    margin: 0 var(--spacing-xs);
}

.analysis-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 15px;
}

.label-icon {
    font-size: 20px;
}

.form-group label small {
    font-weight: normal;
    color: var(--text-secondary);
    font-size: 13px;
}

.form-group input {
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    /* 主按钮使用中等饱和度的蓝色渐变，提升点击感 */
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #60a5fa 100%);
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-large {
    padding: 16px 36px;
    font-size: 17px;
    font-weight: 600;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-link {
    background: transparent;
    color: var(--primary-color);
    padding: 0;
    text-decoration: none;
    box-shadow: none;
}

.btn-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.btn-block {
    width: 100%;
}

/* 提示框 */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-error {
    background: var(--danger-light);
    color: #991b1b;
    border-color: var(--danger);
}

.alert-info {
    background: var(--info-light);
    color: #1e40af;
    border-color: var(--info);
}

/* 结果区域 */
.results-container {
    margin-top: var(--spacing-2xl);
}

.results-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-light);
}

.results-header h2 {
    font-size: clamp(24px, 4vw, 36px);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.results-summary {
    font-size: 16px;
    color: var(--text-secondary);
}

.results-summary strong {
    color: var(--primary-color);
    font-size: 22px;
    font-weight: 700;
}

/* 结果分类 */
.result-section {
    margin-bottom: var(--spacing-2xl);
}

.section-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-light);
}

.section-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: clamp(20px, 3vw, 26px);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.section-header h3 small {
    font-weight: normal;
    color: var(--text-secondary);
    font-size: 16px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 15px;
    margin-top: var(--spacing-xs);
}

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-safe {
    background: var(--success-light);
    color: #065f46;
}

.badge-stable {
    background: var(--warning-light);
    color: #92400e;
}

.badge-rush {
    background: var(--danger-light);
    color: #991b1b;
}

/* 结果网格 */
.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

/* 结果卡片 */
.result-card {
    background: linear-gradient(135deg, #ffffff 0%, #f3f7ff 40%, #e5edff 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.result-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.view-all-card {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    min-height: 200px;
}

.view-all-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
    border-style: solid;
}

.view-all-btn {
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.safe-section .result-card {
    border-left: 4px solid var(--success);
}

.stable-section .result-card {
    border-left: 4px solid var(--warning);
}

.rush-section .result-card {
    border-left: 4px solid var(--danger);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(248, 250, 252, 0.95);
    border-bottom: 1px solid var(--border-light);
}

.college-logo {
    width: 64px;
    height: 64px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
}

.college-info {
    flex: 1;
    min-width: 0;
}

.college-info h4 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    line-height: 1.3;
    word-break: break-word;
}

.major-name {
    font-size: 14px;
    color: var(--text-secondary);
}

.card-body {
    padding: var(--spacing-lg);
    flex: 1;
}

.intro {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* 专业数量显示 */
.major-count {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
}

/* 无结果 */
.no-results {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: var(--text-secondary);
}

/* 页脚 */
.footer {
    text-align: center;
    color: white;
    padding: var(--spacing-xl) var(--spacing-md);
    opacity: 0.9;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    overflow: auto;
    padding: var(--spacing-md);
    box-sizing: border-box;
}

.modal[style*="display: flex"],
.modal.show {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-primary) !important;
    border-radius: var(--radius-xl) !important;
    width: 90% !important;
    max-width: 720px !important;
    max-height: 85vh !important;
    display: flex !important;
    flex-direction: column !important;
    box-shadow: var(--shadow-2xl) !important;
    animation: slideUp 0.3s ease !important;
    margin: 0 auto !important;
    position: relative !important;
    overflow: hidden !important;
    border: 1px solid var(--border-color) !important;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--spacing-lg) var(--spacing-xl) !important;
    border-bottom: 1px solid var(--border-light) !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    background: var(--bg-secondary) !important;
}

.modal-header h2 {
    margin: 0 !important;
    font-size: 24px !important;
    color: var(--text-primary) !important;
    font-weight: 600 !important;
}

.modal-close {
    font-size: 28px !important;
    font-weight: 300 !important;
    color: var(--text-secondary) !important;
    cursor: pointer !important;
    line-height: 1 !important;
    transition: all 0.3s ease !important;
    background: transparent !important;
    border: none !important;
    padding: var(--spacing-xs) !important;
    width: 36px !important;
    height: 36px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 50% !important;
}

.modal-close:hover {
    color: var(--text-primary) !important;
    background: var(--bg-tertiary) !important;
}

.modal-body {
    padding: var(--spacing-xl) !important;
    overflow-y: auto !important;
    flex: 1 !important;
    background: var(--bg-primary) !important;
}

.modal-major-item {
    padding: var(--spacing-lg) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: var(--spacing-md) !important;
    transition: all 0.3s ease !important;
    background: var(--bg-primary) !important;
}

.modal-major-item:hover {
    border-color: var(--primary-color) !important;
    box-shadow: var(--shadow-md) !important;
    transform: translateY(-2px) !important;
}

.modal-major-item:last-child {
    margin-bottom: 0 !important;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .main-content {
        padding: var(--spacing-xl);
    }
    
    .result-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .header h1 {
        font-size: 32px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .main-content {
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }
    
    .form-card {
        padding: var(--spacing-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .result-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .section-header h3 {
        font-size: 20px;
        flex-wrap: wrap;
    }
    
    .card-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .college-logo {
        width: 80px;
        height: 80px;
    }
    
    .card-footer {
        flex-direction: column;
    }
    
    .card-footer .btn {
        width: 100%;
    }
    
    .modal-content {
        width: 95% !important;
        max-height: 90vh !important;
        border-radius: var(--radius-lg) !important;
    }
    
    .modal-header {
        padding: var(--spacing-md) var(--spacing-lg) !important;
    }
    
    .modal-body {
        padding: var(--spacing-lg) !important;
    }
    
    .segment-card {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .btn-large {
        padding: 14px 28px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .form-card {
        padding: var(--spacing-md);
    }
    
    .result-grid {
        gap: var(--spacing-sm);
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: var(--spacing-md);
    }
    
    .modal-content {
        width: 100% !important;
        max-height: 95vh !important;
        border-radius: var(--radius-md) !important;
        margin: var(--spacing-sm) !important;
    }
}

/* 打印样式 */
@media print {
    body {
        background: white;
    }
    
    .header,
    .footer,
    .btn,
    .card-footer {
        display: none;
    }
    
    .main-content {
        box-shadow: none;
        padding: 0;
    }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}