/**
 * ShareHub 2.0 - UI组件
 */

/* ========== 导航栏 ========== */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 4px 30px rgba(0, 0, 0, 0.05),
        0 1px 0 rgba(255, 255, 255, 0.5) inset;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    transition: all var(--transition-base);
}

[data-theme="dark"] .navbar {
    background: rgba(26, 26, 26, 0.85);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 4px 30px rgba(0, 0, 0, 0.3),
        0 1px 0 rgba(255, 255, 255, 0.05) inset;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1280px;
    margin: 0 auto;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-brand:hover {
    text-decoration: none;
    color: var(--color-accent);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    text-decoration: none;
}

.nav-link.active {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

/* ========== 卡片 ========== */
.card {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.9) 0%,
            rgba(255, 255, 255, 0.7) 100%);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow:
        0 4px 20px rgba(102, 126, 234, 0.08),
        0 1px 3px rgba(0, 0, 0, 0.05),
        0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,
            var(--color-accent) 0%,
            #ed64a6 50%,
            #f6ad55 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card:hover {
    box-shadow:
        0 8px 30px rgba(102, 126, 234, 0.15),
        0 4px 6px rgba(0, 0, 0, 0.05),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
    transform: translateY(-4px);
}

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

[data-theme="dark"] .card {
    background: linear-gradient(135deg,
            rgba(36, 36, 36, 0.9) 0%,
            rgba(36, 36, 36, 0.7) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 4px 20px rgba(124, 58, 237, 0.1),
        0 1px 3px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

[data-theme="dark"] .card:hover {
    box-shadow:
        0 8px 30px rgba(124, 58, 237, 0.2),
        0 4px 6px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.card-header {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0;
}

.card-body {
    padding: var(--spacing-md) 0;
}

.card-footer {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
    margin-top: var(--spacing-md);
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #8b5cf6 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-accent-hover) 0%, #7c3aed 100%);
    border-color: transparent;
    color: white;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
    transform: translateY(-2px);
}

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

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

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

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

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

.btn-danger:hover {
    background: #e53e3e;
    color: white;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* ========== 表单 ========== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

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

/* ========== Gallery网格 ========== */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.gallery-item {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.95) 0%,
            rgba(255, 255, 255, 0.8) 100%);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.08),
        0 0 0 1px rgba(255, 255, 255, 0.4) inset;
    position: relative;
}

.gallery-item > a {
    display: block;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

.gallery-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.gallery-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow:
        0 20px 40px rgba(102, 126, 234, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
}

.gallery-item:hover::after {
    opacity: 1;
}

[data-theme="dark"] .gallery-item {
    background: linear-gradient(135deg,
            rgba(36, 36, 36, 0.95) 0%,
            rgba(45, 45, 45, 0.9) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

[data-theme="dark"] .gallery-item:hover {
    box-shadow:
        0 20px 40px rgba(124, 58, 237, 0.25),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.gallery-item img,
.gallery-item video {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
}

.gallery-item-meta {
    padding: var(--spacing-md);
}

.gallery-item-overlay {
    padding: var(--spacing-md);
}

.gallery-item-overlay > h3 {
    margin: 0;
    font-size: 1.125rem;
    line-height: 1.35;
}

.gallery-item-overlay .gallery-item-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) 0 0;
    border-top: 1px solid rgba(148, 163, 184, 0.28);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

[data-theme="dark"] .gallery-item-overlay .gallery-item-meta {
    border-top-color: rgba(148, 163, 184, 0.2);
}

.gallery-item-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gallery-item-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ========== Badge徽章 ========== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
}

.badge-primary {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

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

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

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

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

.alert-success {
    background: var(--color-success-light);
    border-color: var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background: var(--color-error-light);
    border-color: var(--color-error);
    color: var(--color-error);
}

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

/* ========== 暗色模式切换按钮 ========== */
.theme-toggle {
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

/* ========== Notification Icon ========== */
.notification-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.notification-icon:hover {
    background: var(--color-bg-tertiary);
}

.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: var(--radius-full);
    background: var(--color-error);
    color: #fff;
    font-size: 0.6875rem;
    font-weight: 700;
    line-height: 18px;
    text-align: center;
}

/* ========== Download Button ========== */
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ========== Quick Upload Modal ========== */
.quick-fab {
    position: fixed;
    right: 22px;
    bottom: 26px;
    z-index: 110;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    min-height: 46px;
    border-radius: var(--radius-full);
    padding: 11px 18px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    background: linear-gradient(135deg, var(--color-accent) 0%, #8b5cf6 55%, #ed64a6 100%);
    color: #fff;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow:
        0 16px 32px rgba(102, 126, 234, 0.35),
        0 4px 8px rgba(0, 0, 0, 0.12);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.quick-fab:hover {
    transform: translateY(-2px);
    filter: brightness(1.03);
    box-shadow:
        0 20px 40px rgba(102, 126, 234, 0.42),
        0 8px 14px rgba(0, 0, 0, 0.16);
}

.quick-fab:active {
    transform: translateY(0);
}

.quick-fab:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 3px rgba(255, 255, 255, 0.9),
        0 0 0 6px rgba(102, 126, 234, 0.45),
        0 16px 32px rgba(102, 126, 234, 0.35);
}

[data-theme="dark"] .quick-fab {
    border-color: rgba(255, 255, 255, 0.16);
    box-shadow:
        0 18px 36px rgba(124, 58, 237, 0.38),
        0 8px 14px rgba(0, 0, 0, 0.35);
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(11, 24, 45, 0.55);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 40;
    padding: 14px;
}

.modal-backdrop.on {
    display: flex;
}

.modal-card {
    width: min(560px, 100%);
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    padding: 14px;
    box-shadow: var(--shadow-xl);
}

.modal-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.modal-close {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.7rem;
}

.modal-card form {
    display: grid;
    gap: var(--spacing-md);
}

.modal-card label {
    display: grid;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.modal-card input[type="text"],
.modal-card input[type="file"],
.modal-card input:not([type]) {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
}

.modal-card .sub {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.modal-card button[type="submit"] {
    justify-self: end;
    background: linear-gradient(135deg, var(--color-accent) 0%, #8b5cf6 100%);
    color: #fff;
    border: 0;
    border-radius: var(--radius-md);
    padding: 0.55rem 1rem;
    font-weight: 600;
}

.quick-upload-dialog {
    width: min(560px, calc(100% - 28px));
    border: 0;
    padding: 0;
    background: transparent;
    margin: auto;
}

.quick-upload-dialog::backdrop {
    background: rgba(11, 24, 45, 0.55);
    backdrop-filter: blur(2px);
}

.quick-upload-dialog[open] {
    display: grid;
    place-items: center;
}

/* ========== 加载动画 ========== */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ========== 汉堡菜单 ========== */
.hamburger-btn {
    display: none; /* 桌面端隐藏 */
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1002;
}

.hamburger-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* 导航抽屉 */
.nav-drawer {
    display: contents; /* 桌面端：透明包装，不影响布局 */
}

.nav-drawer-backdrop {
    display: none; /* 桌面端隐藏 */
}

body.nav-open {
    overflow: hidden; /* 抽屉打开时防止背景滚动 */
}

/* 抽屉文字在桌面端隐藏 */
.drawer-text {
    display: none;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    /* 汉堡按钮显示 */
    .hamburger-btn {
        display: flex;
    }

    /* 导航抽屉 → 侧边滑出面板 */
    .nav-drawer {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-primary);
        backdrop-filter: blur(10px);
        box-shadow: -4px 0 12px rgba(0, 0, 0, 0.1);
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 1001;
        overflow-y: auto;
        display: flex;
        flex-direction: column;
        padding: var(--spacing-xl) 0;
    }

    .nav-drawer.open {
        transform: translateX(0);
    }

    /* 抽屉背景遮罩 */
    .nav-drawer-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(2px);
        z-index: 1000;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s, visibility 0.3s;
    }

    .nav-drawer-backdrop.open {
        opacity: 1;
        visibility: visible;
    }

    /* 导航菜单垂直布局 */
    .navbar-nav {
        flex-direction: column;
        gap: 0;
        padding: 0;
        margin: 0;
    }

    .navbar-nav li {
        width: 100%;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
        text-align: left;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link:hover {
        background: var(--color-bg-secondary);
    }

    /* 右侧操作区域 */
    .nav-drawer > .flex {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
        padding: var(--spacing-lg);
        margin-top: auto;
        border-top: 1px solid var(--color-border);
    }

    /* 显示抽屉文字 */
    .drawer-text {
        display: inline;
        margin-left: 8px;
    }

    /* 抽屉内图标链接统一样式 */
    .nav-drawer .notification-icon,
    .nav-drawer .theme-toggle {
        display: block;
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
        text-align: left;
        border-bottom: 1px solid var(--color-border);
        text-decoration: none;
        background: transparent;
        border-left: none;
        border-right: none;
        border-top: none;
        border-radius: 0;
        margin: 0;
        cursor: pointer;
    }

    .nav-drawer .notification-icon:hover,
    .nav-drawer .theme-toggle:hover {
        background: var(--color-bg-secondary);
    }

    /* 隐藏抽屉内的通知badge（小圆点） */
    .nav-drawer .notification-badge {
        display: none !important;
    }

    /* 抽屉内所有nav-link样式统一 */
    .nav-drawer .nav-link {
        border-bottom: 1px solid var(--color-border);
    }

    .nav-drawer .btn {
        width: 100%;
        justify-content: center;
    }

    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: var(--spacing-md);
    }

    .gallery-item img,
    .gallery-item video {
        height: 160px;
    }

    /* 快速上传按钮 - 移动端缩小为圆形 */
    .quick-fab {
        right: 16px;
        bottom: 16px;
        width: 56px;
        height: 56px;
        min-height: 56px;
        padding: 0;
        font-size: 1.5rem;
        border-radius: 50%;
    }

    /* 隐藏按钮内的文字，只保留加号图标 */
    .quick-fab .btn-text {
        display: none;
    }

    /* Modal 全宽 */
    .modal-card {
        width: 95%;
        margin: var(--spacing-md);
    }

    /* 按钮触控目标 */
    .btn {
        min-height: 44px;
    }

    /* Page header */
    .page-header {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    /* Pagination */
    .pagination {
        gap: var(--spacing-xs);
        font-size: 0.875rem;
    }

    .pagination .page-link {
        min-width: 36px;
        height: 36px;
        padding: 0 var(--spacing-xs);
    }
}