/*
Theme Name: CityU Course Review
Theme URI: https://github.com/zbhaowen/cityu-course-review
Description: 香港城市大学课程评价系统 WordPress 主题
Author: zbhaowen
Author URI: https://zbhaowen.top
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: cityu-course-review
Tags: education, courses, reviews, university, CityU, Hong Kong
*/

:root {
    --primary-color: #DA562B;
    --primary-light: #DF7433;
    --primary-dark: #CC103C;
    --sidebar-bg: #ffffff;
    --sidebar-hover: rgba(218, 86, 43, 0.05);
    --sidebar-active: rgba(218, 86, 43, 0.1);
    --top-bar-bg: #ffffff;
    --page-bg: #FAFBFC;
    --card-bg: #ffffff;
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-light: #9CA3AF;
    --text-sidebar: #4B5563;
    --text-sidebar-active: var(--primary-color);
    --border-color: #E5E7EB;
    --border-light: #F3F4F6;
    --star-color: #F48C06;
    --cityu-gradient: linear-gradient(to right, #DF7433 0%, #DA562B 35%, #CC103C 80%, #9F0D43 100%);
    --sidebar-width: 220px;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--page-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.admin-layout {
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: var(--text-sidebar);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s ease;
    overflow-y: auto;
    overflow-x: hidden;
    border-right: 1px solid var(--border-light);
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.03);
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar-header {
    padding: 16px 20px 12px;
    text-align: center;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-logo {
    width: 160px;
    height: auto;
    object-fit: contain;
}

.sidebar-menu {
    padding: 12px 0;
}

.menu-group {
    margin-bottom: 16px;
}

.menu-group-title {
    display: block;
    padding: 6px 20px;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-light);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 20px;
    background: none;
    border: none;
    color: var(--text-sidebar);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background-color: var(--sidebar-hover);
    color: var(--text-sidebar-active);
    border-left-color: rgba(218, 86, 43, 0.5);
    padding-left: 22px;
}

.menu-item.active {
    background: rgba(218, 86, 43, 0.06);
    color: var(--text-sidebar-active);
    border-left-color: var(--primary-color);
}

.menu-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.menu-item:hover svg {
    transform: translateX(2px);
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

.top-bar {
    background: var(--top-bar-bg);
    padding: 0 20px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    border-bottom: 1px solid var(--border-light);
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    margin-right: 4px;
    display: none;
    transition: all 0.2s;
    border-radius: var(--radius-sm);
}

.sidebar-toggle:hover {
    color: var(--primary-color);
    background: rgba(218, 86, 43, 0.05);
}

.search-box {
    flex: 1;
    max-width: 320px;
    position: relative;
    margin: 0 20px;
}

.search-box input {
    width: 100%;
    padding: 8px 36px 8px 14px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 13px;
    background-color: #F3F4F6;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-box input::placeholder {
    color: var(--text-light);
}

.search-box input:focus {
    outline: none;
    background-color: white;
    box-shadow: 0 0 0 3px rgba(218, 86, 43, 0.1), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.search-box form {
    display: flex;
    align-items: center;
    position: relative;
}

.search-box button {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 12px;
    color: var(--text-light);
    transition: color 0.2s;
}

.search-box button:hover {
    color: var(--text-secondary);
}

.search-box input:focus+button {
    color: var(--primary-color);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.login-btn {
    background: var(--cityu-gradient);
    color: white;
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(218, 86, 43, 0.25);
}

.login-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(218, 86, 43, 0.35);
}

.page-container {
    flex: 1;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}


.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.page-header h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.page-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.back-btn:hover {
    color: var(--primary-color);
    background: rgba(218, 86, 43, 0.05);
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background-color: var(--card-bg);
    padding: 16px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--cityu-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: linear-gradient(135deg, rgba(218, 86, 43, 0.08) 0%, rgba(204, 16, 60, 0.08) 100%);
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.stat-card:hover .stat-icon {
    transform: scale(1.05);
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

.dashboard-section {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.section-header h2 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    position: relative;
    padding-left: 10px;
}

.section-header h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 16px;
    background: var(--cityu-gradient);
    border-radius: 2px;
}

.view-all {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

.view-all:hover {
    color: var(--primary-dark);
    background: rgba(218, 86, 43, 0.05);
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.course-card {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: 18px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.course-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--cityu-gradient);
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.course-card:hover::after {
    transform: scaleX(1);
}

.course-card:hover {
    border-color: rgba(218, 86, 43, 0.2);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.course-code {
    background: linear-gradient(135deg, rgba(218, 86, 43, 0.1) 0%, rgba(204, 16, 60, 0.1) 100%);
    color: var(--primary-color);
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    letter-spacing: 0.5px;
}

.course-tag {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.ge-tag {
    background: rgba(218, 86, 43, 0.1);
    color: var(--primary-color);
}

.course-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.course-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 8px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 80px;
}

.stat-label {
    font-size: 10px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.stars {
    display: flex;
    gap: 1.5px;
    align-items: center;
}

.star-icon {
    color: var(--star-color);
}

.star-icon.empty {
    color: var(--border-color);
}

.review-count {
    font-size: 13px;
    color: var(--text-light);
    margin-left: 8px;
}

.leaderboard {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    padding: 16px;
    cursor: pointer;
    transition: background-color 0.2s;
    border-radius: 8px;
}

.leaderboard-item:hover {
    background-color: rgba(218, 86, 43, 0.04);
}

.rank {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    margin-right: 16px;
    background-color: #E8E8E8;
    color: var(--text-secondary);
}

.rank.gold {
    background: var(--cityu-gradient);
    color: white;
}

.rank.silver {
    background-color: #94a3b8;
    color: white;
}

.rank.bronze {
    background-color: #cd7f32;
    color: white;
}

.leaderboard-info {
    flex: 1;
}

.leaderboard-course-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.leaderboard-course-code {
    font-size: 13px;
    color: var(--text-secondary);
}

.leaderboard-rating {
    display: flex;
    align-items: center;
    gap: 8px;
}

.g-course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.g-course-card {
    background: white;
    padding: 28px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 1px 4px rgba(218, 86, 43, 0.06);
}

.g-course-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(218, 86, 43, 0.12);
}

.schools-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.school-block {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.school-header {
    padding: 20px 24px;
    background: white;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s;
}

.school-header:hover {
    background: rgba(218, 86, 43, 0.03);
}

.school-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.school-header .expand-icon {
    transition: transform 0.3s;
    color: var(--text-secondary);
}

.school-header .expand-icon.rotated {
    transform: rotate(180deg);
}

.school-content {
    padding: 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.department-section {
    background-color: #FAFAFA;
    padding: 20px;
    border-radius: 8px;
}

.department-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.department-courses {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.school-course-card {
    background-color: white;
    padding: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--border-light);
}

.school-course-card:hover {
    background-color: rgba(218, 86, 43, 0.04);
    transform: translateY(-2px);
    border-color: rgba(218, 86, 43, 0.1);
}

.school-course-code {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.ge-badge {
    background: rgba(218, 86, 43, 0.1);
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 10px;
}

.school-course-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.school-course-rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.school-course-rating span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-left: 8px;
}

.school-empty {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

.course-detail-content {
    max-width: 800px;
    margin: 0 auto;
}

.course-info {
    background-color: var(--card-bg);
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    margin-bottom: 24px;
}

.course-meta {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.meta-icon {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
}

.course-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
    background-color: var(--card-bg);
    padding: 4px 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.tab {
    background: none;
    border: none;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
    border-radius: 6px;
}

.tab.active {
    color: var(--primary-color);
    background: rgba(218, 86, 43, 0.05);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--cityu-gradient);
    border-radius: 2px;
}

.tab-content {
    display: none;
    background-color: var(--card-bg);
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.tab-content.active {
    display: block;
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.review-card {
    background-color: #FAFAFA;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.review-header {
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.review-delete-btn {
    background: none;
    border: none;
    color: #999;
    font-size: 12px;
    font-weight: 300;
    cursor: pointer;
    padding: 2px 0;
    letter-spacing: 0.5px;
    white-space: nowrap;
    transition: color 0.2s;
}

.review-delete-btn:hover {
    color: #c05050;
}

.review-rating {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.review-rating div {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.review-label {
    font-size: 12px;
    color: var(--text-light);
}

.review-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.review-tag {
    background: rgba(218, 86, 43, 0.08);
    color: var(--primary-color);
    padding: 4px 12px;
    font-size: 12px;
    border-radius: 4px;
}

.review-comment {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.review-date {
    font-size: 12px;
    color: var(--text-light);
}

.add-review-form {
    background-color: #FAFAFA;
    padding: 24px;
    border-radius: 10px;
}

.add-review-form h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.rating-section {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.rating-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.interactive-stars {
    display: flex;
    gap: 4px;
    cursor: pointer;
}

.interactive-star {
    width: 32px;
    height: 32px;
    transition: transform 0.2s;
}

.interactive-star:hover {
    transform: scale(1.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.form-select,
.form-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    background-color: white;
}

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

.form-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    background-color: white;
    resize: vertical;
    min-height: 120px;
}

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

.btn-primary {
    padding: 14px;
    font-size: 16px;
    background: var(--cityu-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 12px rgba(218, 86, 43, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(218, 86, 43, 0.4);
}

.btn-secondary {
    padding: 8px 20px;
    border: none;
    border-radius: 6px;
    background: rgba(218, 86, 43, 0.1);
    color: #DA562B;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(218, 86, 43, 0.15);
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.2;
}

.empty-state p {
    font-size: 14px;
    margin-bottom: 16px;
}

/* ====== 找课友评论区 ====== */
.comment-section {
    max-width: 100%;
}

.comment-input-area {
    margin-bottom: 32px;
}

.comment-input-area textarea {
    width: 100%;
    resize: vertical;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: #fafafa;
    transition: border-color 0.2s, background 0.2s;
    font-family: inherit;
}

.comment-input-area textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: #fff;
}

.comment-login-hint {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: #faf7f2;
    border-radius: 10px;
    margin-bottom: 32px;
    font-size: 14px;
    color: var(--text-secondary);
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.comment-item {
    display: flex;
    gap: 14px;
}

.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #faf0e3;
    color: #b45918;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 500;
    flex-shrink: 0;
    letter-spacing: 0.5px;
}

.comment-body {
    flex: 1;
    min-width: 0;
}

.comment-meta {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 6px;
}

.comment-author {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.comment-date {
    font-size: 12px;
    color: #aaa;
    font-weight: 300;
}

.comment-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    word-wrap: break-word;
    font-weight: 300;
}

.comment-actions {
    margin-top: 8px;
    display: flex;
    gap: 16px;
    align-items: center;
}

.comment-reply-btn {
    background: none;
    border: none;
    color: #999;
    font-size: 12px;
    font-weight: 300;
    cursor: pointer;
    padding: 2px 0;
    letter-spacing: 0.5px;
    transition: color 0.2s;
}

.comment-reply-btn:hover {
    color: var(--primary-color);
}

.comment-delete-btn:hover {
    color: #c05050;
}

.reply-form {
    margin-top: 12px;
    padding: 14px;
    background: #fafafa;
    border-radius: 8px;
}

.reply-form textarea {
    width: 100%;
    resize: vertical;
    margin-bottom: 10px;
    border: 1px solid #e8e8e8;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 13px;
    line-height: 1.6;
    background: #fff;
    color: var(--text-primary);
    font-family: inherit;
}

.reply-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.reply-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.auth-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.auth-modal-overlay.show {
    display: flex;
}

.auth-modal {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 420px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.auth-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.2s;
    z-index: 10;
}

.auth-close-btn:hover {
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.05);
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
}

.auth-tab {
    flex: 1;
    background: none;
    border: none;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

.auth-tab.active {
    color: var(--primary-color);
}

.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 15%;
    right: 15%;
    height: 3px;
    background: var(--cityu-gradient);
    border-radius: 2px;
}

.auth-tab-content {
    padding: 24px;
}

.auth-header {
    text-align: center;
    margin-bottom: 24px;
}

.auth-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.auth-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-error {
    display: block;
    font-size: 12px;
    color: #ef4444;
    margin-top: 4px;
    min-height: 16px;
}

.auth-message-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 4px;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
}

.forgot-password {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s;
}

.forgot-password:hover {
    color: var(--primary-dark);
}

.auth-submit {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    background: var(--cityu-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(218, 86, 43, 0.3);
}

.auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(218, 86, 43, 0.4);
}

.auth-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-light);
    text-align: center;
}

.auth-footer p {
    font-size: 12px;
    color: var(--text-light);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

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

.logged-in-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(218, 86, 43, 0.05);
    border-radius: 24px;
    border: 1px solid rgba(218, 86, 43, 0.1);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--cityu-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    font-weight: 600;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.user-logout-btn {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.user-logout-btn:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.about-content {
    background-color: var(--card-bg);
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    max-width: 800px;
}

.about-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.section-tabs-inline {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    background: var(--card-bg);
    padding: 4px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    width: fit-content;
}

.section-tab {
    padding: 8px 20px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
}

.section-tab:hover {
    color: var(--primary-color);
    background: rgba(218, 86, 43, 0.05);
}

.section-tab.active {
    color: var(--primary-color);
    background: rgba(218, 86, 43, 0.08);
    font-weight: 600;
}

.course-section-badge {
    display: inline-block;
    background: rgba(218, 86, 43, 0.1);
    color: var(--primary-color);
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 8px;
}

.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    border: 1px solid var(--border-light);
    border-top: none;
}

.search-dropdown-item {
    padding: 10px 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: background 0.15s;
    text-decoration: none;
    color: inherit;
}

.search-dropdown-item:hover {
    background: rgba(218, 86, 43, 0.04);
}

.search-dropdown-code {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-color);
    min-width: 80px;
}

.search-dropdown-name {
    font-size: 14px;
    color: var(--text-primary);
    flex: 1;
}

.search-dropdown-rating {
    font-size: 12px;
    color: var(--text-light);
}

.form-hint {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
    display: block;
}

.submit-course-form {
    background: var(--card-bg);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.review-instructor {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-style: italic;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.about-title {
    font-size: 28px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.about-body {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-body h2 {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 32px 0 16px;
}

.about-body h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 24px 0 12px;
}

.about-body p {
    margin-bottom: 16px;
}

.about-body ul,
.about-body ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.about-body li {
    margin-bottom: 8px;
}

.about-body a {
    color: var(--primary-color);
    text-decoration: underline;
}

.about-body a:hover {
    opacity: 0.8;
}

.about-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 16px 0;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 240px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: block;
    }

    .search-box {
        margin: 0 12px;
    }

    .top-bar {
        padding: 0 16px;
    }

    .page-container {
        padding: 16px;
    }

    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .course-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .g-course-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .school-content {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .review-rating {
        flex-direction: column;
        gap: 16px;
    }

    .rating-section {
        flex-direction: column;
        gap: 16px;
    }

    .tabs {
        flex-wrap: wrap;
        padding: 4px 16px;
    }

    .tab {
        padding: 10px 16px;
        font-size: 13px;
    }
}