/* 校园问题反馈系统样式 */

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --radius-lg: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部 */
.header {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 1.25rem;
    font-weight: 600;
}

.logo-icon {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    gap: 24px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-name {
    font-weight: 500;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

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

.btn-secondary:hover {
    background: #d1d5db;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.75rem;
}

.btn-block {
    width: 100%;
}

/* 主要内容 */
.main {
    flex: 1;
    padding: 40px 0;
}

/* 卡片 */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

/* 表单 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.form-help {
    display: block;
    margin-top: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

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

/* 提示框 */
.alert {
    padding: 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
}

/* 认证页面 */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-box {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header h1 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-muted);
}

.auth-links {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* 首页 Hero */
.hero-section {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    color: white;
    margin-bottom: 40px;
}

.hero-section h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.hero-section p {
    font-size: 1.125rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* 统计栏 */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.stat-item {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-number.pending { color: var(--warning-color); }
.stat-number.processing { color: var(--info-color); }
.stat-number.resolved { color: var(--success-color); }

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 内容布局 */
.content-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 24px;
}

.sidebar {
    position: sticky;
    top: 84px;
    height: fit-content;
}

.sidebar h3 {
    font-size: 1rem;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.category-list,
.filter-list {
    list-style: none;
}

.category-list li,
.filter-list li {
    margin-bottom: 4px;
}

.category-list a,
.filter-list a {
    display: block;
    padding: 10px 12px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.category-list a:hover,
.filter-list a:hover,
.category-list li.active a,
.filter-list li.active a {
    background: var(--primary-color);
    color: white;
}

/* 搜索栏 */
.search-bar {
    margin-bottom: 24px;
}

.search-bar form {
    display: flex;
    gap: 12px;
}

.search-bar input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.875rem;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 反馈列表 */
.feedback-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feedback-item {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feedback-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.feedback-header {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.category-tag {
    display: inline-block;
    padding: 4px 10px;
    background: #e0e7ff;
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge,
.priority-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-pending { background: #fef3c7; color: #92400e; }
.status-processing { background: #dbeafe; color: #1e40af; }
.status-resolved { background: #d1fae5; color: #065f46; }
.status-closed { background: #f3f4f6; color: #4b5563; }

.priority-low { background: #f3f4f6; color: #4b5563; }
.priority-normal { background: #dbeafe; color: #1e40af; }
.priority-high { background: #fef3c7; color: #92400e; }
.priority-urgent { background: #fee2e2; color: #991b1b; }

.feedback-title {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.feedback-title a {
    color: var(--text-color);
    text-decoration: none;
}

.feedback-title a:hover {
    color: var(--primary-color);
}

.feedback-excerpt {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 12px;
    line-height: 1.6;
}

.feedback-meta {
    display: flex;
    gap: 16px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.feedback-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 32px;
}

.page-info {
    color: var(--text-muted);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

/* 反馈详情 */
.feedback-detail {
    max-width: 800px;
    margin: 0 auto;
}

.feedback-detail-header {
    margin-bottom: 24px;
}

.feedback-detail-header h1 {
    font-size: 1.5rem;
    margin: 16px 0;
}

.feedback-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.feedback-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 24px;
}

.feedback-images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.image-thumbnail img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: var(--radius);
}

.feedback-contact {
    padding: 16px;
    background: #f9fafb;
    border-radius: var(--radius);
    margin-bottom: 24px;
}

/* 回复区域 */
.replies-section {
    margin-top: 32px;
}

.replies-section h2 {
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.reply-item {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}

.reply-item.official {
    border-left: 4px solid var(--primary-color);
    background: #f5f3ff;
}

.reply-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.reply-header .author {
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.official-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-size: 0.75rem;
}

.role-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
}

.role-badge.admin {
    background: var(--danger-color);
    color: white;
}

.role-badge.teacher {
    background: var(--info-color);
    color: white;
}

.reply-content {
    line-height: 1.8;
}

.reply-form {
    margin-top: 24px;
}

.reply-form h3 {
    margin-bottom: 16px;
}

.login-prompt {
    text-align: center;
    padding: 40px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
}

.login-prompt p {
    margin-bottom: 16px;
    color: var(--text-muted);
}

/* 管理操作 */
.admin-actions {
    padding: 20px;
    background: #f9fafb;
    border-radius: var(--radius);
    margin-top: 24px;
}

.admin-actions h4 {
    margin-bottom: 12px;
}

.status-form {
    display: flex;
    gap: 12px;
}

.status-form select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

/* 页脚 */
.footer {
    background: var(--card-bg);
    padding: 24px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
}

.footer-inner p {
    margin-bottom: 4px;
}

/* 页面头部 */
.page-header {
    margin-bottom: 32px;
}

.page-header h1 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-muted);
}

/* 响应式 */
@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 0;
    }

    .nav {
        order: 3;
        width: 100%;
        margin-top: 12px;
        justify-content: center;
    }

    .hero-section h1 {
        font-size: 1.75rem;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .content-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .search-bar form {
        flex-wrap: wrap;
    }

    .search-bar input {
        width: 100%;
    }

    .feedback-meta {
        flex-wrap: wrap;
    }
}