/* 双棋对战平台 - 样式文件 */

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --admin-color: #9c27b0;
    --chessboard-dark: #b58863;
    --chessboard-light: #f0d9b5;
    --chinese-dark: #b55a30;
    --chinese-light: #f0c090;
    --guest-color: #9b59b6;
}

body {
    background: linear-gradient(135deg, #1a2980, #26d0ce);
    color: #333;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

/* 头部样式 */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
}

.logo i {
    margin-right: 10px;
    font-size: 28px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.username {
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 5px 15px;
    border-radius: 20px;
}

.guest-badge {
    background-color: var(--guest-color);
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 5px;
}

.admin-badge {
    background-color: var(--admin-color);
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 5px;
}

/* 按钮样式 */
.btn {
    padding: 8px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: var(--light-color);
    color: var(--dark-color);
}

.btn-secondary:hover {
    background-color: #bdc3c7;
}

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

.btn-danger:hover {
    background-color: #c0392b;
}

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

.btn-guest:hover {
    background-color: #8e44ad;
}

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

.btn-admin:hover {
    background-color: #7b1fa2;
}

/* 主体布局 */
main {
    display: flex;
    min-height: 700px;
}

.sidebar {
    width: 250px;
    background-color: #f8f9fa;
    padding: 20px;
    border-right: 1px solid #dee2e6;
}

.menu {
    list-style: none;
    margin-top: 20px;
}

.menu-item {
    padding: 12px 15px;
    margin-bottom: 8px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.menu-item i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.menu-item:hover {
    background-color: #e9ecef;
}

.menu-item.active {
    background-color: var(--secondary-color);
    color: white;
}

.menu-item.admin-only {
    display: none;
}

/* 内容区域 */
.content {
    flex: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
}

.page {
    display: none;
    flex: 1;
}

.page.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

.page-title {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    display: flex;
    align-items: center;
}

.page-title i {
    margin-right: 10px;
}

/* 表单样式 */
.form-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.admin-container {
    max-width: 100%;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ced4da;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-control:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

/* 游戏卡片 */
.game-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.game-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
}

.game-card:hover {
    transform: translateY(-5px);
}

.game-card-header {
    padding: 20px;
    color: white;
    text-align: center;
    font-size: 22px;
    font-weight: bold;
}

.chinese-chess {
    background: linear-gradient(to right, var(--chinese-dark), var(--chinese-light));
}

.international-chess {
    background: linear-gradient(to right, var(--chessboard-dark), var(--chessboard-light));
}

.game-card-body {
    padding: 20px;
}

.game-card-body p {
    margin-bottom: 15px;
    color: #555;
}

/* 对手选择 */
.opponent-selection {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.opponent-option {
    display: flex;
    align-items: center;
    padding: 15px;
    border: 2px solid #dee2e6;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.opponent-option:hover {
    border-color: var(--secondary-color);
    background-color: rgba(52, 152, 219, 0.05);
}

.opponent-option.selected {
    border-color: var(--secondary-color);
    background-color: rgba(52, 152, 219, 0.1);
}

.opponent-option.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.opponent-option.disabled:hover {
    border-color: #dee2e6;
    background-color: transparent;
}

.guest-restriction {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--warning-color);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
}

.opponent-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 24px;
    color: var(--primary-color);
}

.opponent-info h3 {
    margin-bottom: 5px;
    color: var(--primary-color);
}

.opponent-info p {
    color: #666;
    font-size: 14px;
}

/* 棋盘样式 */
.chessboard-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}

.chessboard {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(10, 1fr);
    width: 600px;
    height: 667px;
    border: 3px solid #333;
    margin-bottom: 20px;
}

.international-board {
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    width: 600px;
    height: 600px;
}

.cell {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    cursor: pointer;
    user-select: none;
}

.cell:hover {
    opacity: 0.9;
}

.dark {
    background-color: var(--chessboard-dark);
}

.light {
    background-color: var(--chessboard-light);
}

.chinese-cell.dark {
    background-color: var(--chinese-dark);
}

.chinese-cell.light {
    background-color: var(--chinese-light);
}

/* 游戏信息 */
.game-info {
    display: flex;
    justify-content: space-between;
    width: 600px;
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.player-info {
    display: flex;
    align-items: center;
}

.player-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-right: 10px;
    font-size: 18px;
}

.guest-icon {
    background-color: var(--guest-color);
}

.admin-icon {
    background-color: var(--admin-color);
}

.turn-indicator {
    font-weight: bold;
    color: var(--secondary-color);
}

.game-controls {
    display: flex;
    gap: 10px;
}

/* 提示信息 */
.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: none;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.alert-admin {
    background-color: rgba(156, 39, 176, 0.1);
    border: 1px solid var(--admin-color);
    color: var(--admin-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.guest-notice {
    background-color: rgba(155, 89, 182, 0.1);
    border: 1px solid var(--guest-color);
    color: var(--guest-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.guest-notice i {
    margin-right: 10px;
    font-size: 20px;
}

.admin-notice {
    background-color: rgba(156, 39, 176, 0.1);
    border: 1px solid var(--admin-color);
    color: var(--admin-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.admin-notice i {
    margin-right: 10px;
    font-size: 20px;
}

/* 管理员面板 */
.admin-panel {
    margin-top: 30px;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.admin-section {
    margin-bottom: 30px;
}

.admin-section h3 {
    color: var(--admin-color);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--admin-color);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.admin-table th, .admin-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.admin-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: var(--dark-color);
}

.admin-table tr:hover {
    background-color: #f8f9fa;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 15px;
}

.stat-card {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-card .stat-label {
    color: #666;
    font-size: 14px;
}

.system-controls {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

/* 特色功能 */
.features-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}

.feature-card {
    flex: 1;
    min-width: 200px;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
}

.feature-card h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.feature-restriction {
    font-size: 12px;
    color: #e74c3c;
    margin-top: 5px;
}

.feature-available {
    font-size: 12px;
    color: var(--guest-color);
    margin-top: 5px;
}

/* 个人资料页面 */
.profile-header {
    text-align: center;
    margin-bottom: 30px;
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 40px;
    margin-bottom: 15px;
}

.profile-badges {
    margin-top: 5px;
}

.profile-stats {
    margin-bottom: 20px;
}

.guest-stats-note {
    margin-top: 15px;
    font-size: 14px;
    color: #666;
    text-align: center;
}

.recent-activity {
    margin-top: 30px;
}

.activity-container {
    margin-top: 15px;
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
}

/* 表单切换 */
.form-switch {
    text-align: center;
    margin-top: 15px;
}

.form-switch a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: bold;
}

/* 开始游戏页面 */
.start-game-btn {
    width: 100%;
    padding: 12px;
}

.play-mode-info {
    text-align: center;
    margin-top: 20px;
    color: #666;
    font-size: 14px;
}

/* 页脚 */
footer {
    text-align: center;
    padding: 20px;
    background-color: var(--primary-color);
    color: white;
    margin-top: 20px;
}

.footer-sub {
    margin-top: 5px;
    font-size: 14px;
    opacity: 0.8;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
}

/* 警告区域 */
.admin-warning {
    margin-top: 15px;
    font-size: 14px;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .chessboard, .international-board {
        width: 500px;
        height: 556px;
    }
    
    .international-board {
        height: 500px;
    }
    
    .game-info {
        width: 500px;
    }
}

@media (max-width: 768px) {
    main {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #dee2e6;
    }
    
    .menu {
        display: flex;
        justify-content: space-around;
        margin-top: 0;
    }
    
    .menu-item {
        margin-bottom: 0;
        flex-direction: column;
        text-align: center;
        padding: 10px;
        font-size: 14px;
    }
    
    .menu-item i {
        margin-right: 0;
        margin-bottom: 5px;
        font-size: 18px;
    }
    
    .chessboard, .international-board {
        width: 100%;
        max-width: 400px;
        height: 445px;
    }
    
    .international-board {
        height: 400px;
    }
    
    .game-info {
        width: 100%;
        max-width: 400px;
        flex-direction: column;
        gap: 15px;
    }
    
    .admin-table {
        display: block;
        overflow-x: auto;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .logo span {
        display: none;
    }
}

@media (max-width: 480px) {
    .game-options {
        grid-template-columns: 1fr;
    }
    
    .chessboard, .international-board {
        max-width: 350px;
        height: 389px;
    }
    
    .international-board {
        height: 350px;
    }
    
    .cell {
        font-size: 28px;
    }
    
    .form-container {
        padding: 20px;
    }
    
    .features-grid {
        flex-direction: column;
    }
}