/* ===== 后台管理样式 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-card: #222222;
    --bg-hover: #2a2a2a;
    --accent-primary: #E85D4A;
    --accent-hover: #d44a3a;
    --text-primary: #F5F0E8;
    --text-secondary: #999999;
    --text-muted: #666666;
    --border-color: #333333;
    --success: #4CAF50;
    --warning: #FF9800;
    --danger: #f44336;
}

body {
    font-family: 'Noto Sans SC', 'Space Grotesk', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ===== 布局 ===== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* ===== 侧边栏 ===== */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
    letter-spacing: 0.1em;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(232, 93, 74, 0.15);
    color: var(--accent-primary);
}

.nav-icon {
    font-size: 1.2rem;
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.view-site-btn {
    display: block;
    padding: 12px 16px;
    background: var(--accent-primary);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    text-align: center;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.view-site-btn:hover {
    background: var(--accent-hover);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg-card);
    border-radius: 8px;
}

.user-icon {
    font-size: 1.1rem;
}

.logout-btn {
    display: block;
    width: 100%;
    padding: 10px 16px;
    margin-top: 8px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.logout-btn:hover {
    color: #ff6b6b;
    border-color: #ff6b6b;
    background: rgba(255, 107, 107, 0.1);
}

/* ===== 主内容区 ===== */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

/* ===== 顶部栏 ===== */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 32px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-bar h1 {
    font-size: 1.2rem;
    font-weight: 600;
}

/* ===== 按钮 ===== */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

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

.btn-primary:disabled {
    background: var(--bg-card);
    color: var(--text-muted);
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.btn-danger:hover {
    background: #d32f2f;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
}

/* ===== 内容区域 ===== */
.content-section {
    display: none;
    padding: 32px;
    flex: 1;
}

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

/* ===== 旅行卡片网格 ===== */
.trips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.trip-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    cursor: pointer;
}

.trip-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.trip-card-header {
    padding: 20px;
    background: linear-gradient(135deg, rgba(232, 93, 74, 0.2), rgba(232, 100, 53, 0.1));
    position: relative;
}

.trip-card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.trip-card-year {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    opacity: 0.8;
}

.trip-card-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    margin-top: 8px;
}

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

.trip-card-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stat-icon {
    font-size: 1rem;
}

.trip-card-destinations {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.destination-tag {
    padding: 4px 10px;
    background: var(--bg-primary);
    border-radius: 4px;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.trip-card-actions {
    display: flex;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.trip-card-actions .btn {
    flex: 1;
    justify-content: center;
    padding: 8px 12px;
    font-size: 0.75rem;
}

/* ===== 空状态 ===== */
.empty-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    text-align: center;
}

.empty-state.active {
    display: flex;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.empty-state p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* ===== 照片管理 ===== */
.photos-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.trip-selector {
    display: flex;
    align-items: center;
    gap: 12px;
}

.trip-selector label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.trip-selector select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    min-width: 200px;
}

.photos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.photo-card {
    background: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    position: relative;
    aspect-ratio: 3/4;
}

.photo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    opacity: 0;
    transition: opacity 0.2s;
}

.photo-card:hover .photo-card-overlay {
    opacity: 1;
}

.photo-card-info {
    font-size: 0.75rem;
    color: white;
}

.photo-card-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.photo-card-actions .btn {
    padding: 4px 8px;
    font-size: 0.7rem;
}

/* ===== 设置表单 ===== */
.settings-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

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

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.color-options {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.color-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.color-option:hover {
    border-color: var(--text-muted);
}

.color-option input {
    display: none;
}

.color-option input:checked + .color-preview {
    box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--accent-primary);
}

.color-preview {
    width: 24px;
    height: 24px;
    border-radius: 50%;
}

.color-option span:last-child {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

/* ===== 存储管理 ===== */
.storage-management {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.storage-management h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.storage-management h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
    margin-top: 24px;
    color: var(--text-primary);
}

.storage-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.file-system-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 24px;
}

.status-ok {
    color: var(--success);
    font-weight: 500;
}

.status-warn {
    color: var(--warning);
    font-weight: 500;
}

.help-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.data-actions {
    margin-top: 24px;
}

.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== 上传存储状态 ===== */
.upload-storage-status {
    padding: 10px 14px;
    background: var(--bg-card);
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 0.8rem;
}

.upload-storage-status .status-ok {
    color: var(--success);
}

.upload-storage-status .status-warn {
    color: var(--warning);
}

/* ===== 兼容性警告 ===== */
.compat-warning {
    background: var(--warning);
    color: #000;
    padding: 12px 20px;
    font-size: 0.85rem;
}

.compat-warning .warning-content {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 1200px;
    margin: 0 auto;
}

.compat-warning button {
    background: rgba(0,0,0,0.2);
    border: none;
    padding: 6px 14px;
    border-radius: 4px;
    cursor: pointer;
    white-space: nowrap;
}

/* ===== 预览信息 ===== */
.preview-info {
    position: absolute;
    bottom: 4px;
    left: 4px;
    right: 4px;
    text-align: center;
    font-size: 0.65rem;
    color: white;
    background: rgba(0,0,0,0.6);
    padding: 2px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.2s;
}

.preview-item:hover .preview-info {
    opacity: 1;
}

/* ===== 目的地列表 ===== */
.destinations-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 12px;
}

.destination-item {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 12px;
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.destination-item input {
    flex: 1;
    padding: 8px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
}

.destination-item input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.destination-item .btn {
    padding: 8px;
    min-width: 36px;
    justify-content: center;
}

/* ===== 弹窗 ===== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.modal-content.modal-lg {
    max-width: 700px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s;
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* ===== 上传区域 ===== */
.upload-section {
    margin-bottom: 24px;
}

.destination-select {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.destination-select label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.destination-select select {
    flex: 1;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-primary);
    background: rgba(232, 93, 74, 0.05);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.upload-zone p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.upload-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    max-height: 300px;
    overflow-y: auto;
}

.preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: rgba(0,0,0,0.7);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.preview-item:hover .remove-btn {
    opacity: 1;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .admin-layout {
        flex-direction: column;
    }

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

    .sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        padding: 12px;
    }

    .nav-item {
        white-space: nowrap;
    }

    .sidebar-footer {
        display: none;
    }

    .top-bar {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .trips-grid {
        grid-template-columns: 1fr;
    }

    .photos-header {
        flex-direction: column;
        gap: 16px;
    }

    .trip-selector {
        width: 100%;
    }

    .trip-selector select {
        width: 100%;
    }
}