:root {
    --color-primary: #4285f4;
    --color-primary-light: #669df6;
    --color-primary-dark: #1a73e8;
    --color-success: #34a853;
    --color-success-light: #57bb75;
    --color-warning: #fbbc04;
    --color-warning-light: #fcc934;
    --color-danger: #ea4335;
    --color-danger-light: #ee6c60;
    --color-info: #4285f4;
    --color-bg: #f0f2f5;
    --color-surface: #ffffff;
    --color-text: #333333;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-border: #e8e8e8;
    --color-border-light: #f0f0f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.35s ease;
}

.toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 2000;
}

.toast {
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    padding: 12px 20px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    animation: slideIn 0.3s ease;
    min-width: 280px;
}

.toast-success {
    border-left: 3px solid var(--color-success);
}

.toast-error {
    border-left: 3px solid var(--color-danger);
}

.toast-warning {
    border-left: 3px solid var(--color-warning);
}

.toast-info {
    border-left: 3px solid var(--color-primary);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.page-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    min-width: 120px;
    z-index: 100;
    display: none;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--color-text);
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-bg);
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 16px;
}

.pagination-btn {
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.pagination-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.search-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.search-bar .form-input {
    max-width: 300px;
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    margin-right: 4px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 14px;
}

.divider {
    border: none;
    border-top: 1px solid var(--color-border-light);
    margin: 16px 0;
}

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

.text-primary {
    color: var(--color-primary);
}

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

.text-success {
    color: var(--color-success);
}

.text-center {
    text-align: center;
}

.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

.flex {
    display: flex;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }

.lp-bubble-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 20px;
    padding: 8px 0;
}

.lp-bubble {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 12px 14px;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    user-select: none;
}

.lp-bubble-folder {
    background: linear-gradient(145deg, #e8f0fe, #d2e3fc);
    border: 2px solid transparent;
}

.lp-bubble-folder:hover {
    background: linear-gradient(145deg, #d2e3fc, #aecbfa);
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 12px 28px rgba(66, 133, 244, 0.25);
    border-color: var(--color-primary-light);
}

.lp-bubble-folder:active {
    transform: translateY(-2px) scale(0.98);
    box-shadow: 0 4px 12px rgba(66, 133, 244, 0.2);
}

.lp-bubble-plan {
    background: linear-gradient(145deg, #e6f4ea, #ceead6);
    border: 2px solid transparent;
}

.lp-bubble-plan:hover {
    background: linear-gradient(145deg, #ceead6, #a8dab5);
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 12px 28px rgba(52, 168, 83, 0.25);
    border-color: var(--color-success-light);
}

.lp-bubble-plan:active {
    transform: translateY(-2px) scale(0.98);
    box-shadow: 0 4px 12px rgba(52, 168, 83, 0.2);
}

.lp-bubble-icon-wrap {
    position: relative;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.lp-bubble-icon {
    position: relative;
    z-index: 2;
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary-dark);
    text-shadow: 0 1px 2px rgba(255,255,255,0.8);
}

.lp-bubble-icon-plan {
    color: #1e7e34;
}

.lp-folder-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    color: var(--color-primary);
    opacity: 0.35;
    transition: opacity 0.3s;
}

.lp-bubble-folder:hover .lp-folder-svg {
    opacity: 0.55;
}

.lp-file-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    color: var(--color-success);
    opacity: 0.35;
    transition: opacity 0.3s;
}

.lp-bubble-plan:hover .lp-file-svg {
    opacity: 0.55;
}

.lp-bubble-name {
    font-size: 13px;
    font-weight: 600;
    color: #333;
    text-align: center;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 2px;
}

.lp-bubble-meta {
    font-size: 11px;
    color: #888;
    text-align: center;
}

.lp-bubble-actions {
    position: absolute;
    top: 4px;
    right: 4px;
    display: flex;
    gap: 2px;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 5;
}

.lp-bubble:hover .lp-bubble-actions {
    opacity: 1;
}

.lp-bubble-action-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(255,255,255,0.85);
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    padding: 0;
}

.lp-bubble-action-btn:hover {
    background: #fff;
    transform: scale(1.15);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.lp-breadcrumb {
    font-size: 13px;
    margin-top: 2px;
}

.lp-breadcrumb-item {
    color: var(--color-primary);
    cursor: pointer;
    transition: color 0.2s;
}

.lp-breadcrumb-item:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.lp-icon-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.lp-icon-option {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: #555;
    transition: all 0.2s;
}

.lp-icon-option:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: #e8f0fe;
}

.lp-icon-active, .lp-icon-option.lp-icon-active {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #fff;
}

.lp-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 15px;
}

.lp-manage-active {
    cursor: pointer !important;
}

.lp-selected {
    outline: 3px solid #4285f4;
    outline-offset: 2px;
    background: linear-gradient(145deg, #bbdefb, #90caf9) !important;
}

.lp-bubble-plan.lp-selected {
    background: linear-gradient(145deg, #c8e6c9, #a5d6a7) !important;
}

@media (max-width: 768px) {
    .lp-bubble-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 12px;
    }
    .lp-bubble-icon-wrap {
        width: 56px;
        height: 56px;
    }
    .lp-bubble-icon {
        font-size: 18px;
    }
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.media-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    position: relative;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.media-card-selected {
    outline: 3px solid var(--color-primary);
    outline-offset: -3px;
}

.media-card-check {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 10;
    background: rgba(255,255,255,0.9);
    border-radius: 4px;
    padding: 2px;
}

.media-card-thumb {
    width: 100%;
    height: 160px;
    overflow: hidden;
    cursor: pointer;
    background: #f5f5f5;
}

.media-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.media-card-thumb:hover img {
    transform: scale(1.05);
}

.media-video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a237e, #283593);
    color: #fff;
}

.media-video-icon {
    font-size: 36px;
    opacity: 0.8;
}

.media-card-info {
    padding: 10px 12px;
}

.media-card-name {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.media-card-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 2px;
}

.media-card-tags {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.media-ai-tag {
    display: inline-block;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 10px;
    background: #e3f2fd;
    color: #1565c0;
}

.media-card-actions {
    display: flex;
    gap: 4px;
    padding: 0 12px 10px;
}

.media-card-actions .btn {
    padding: 2px 8px;
    font-size: 12px;
}

.media-tag {
    display: inline-block;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 14px;
    background: #f5f5f5;
    color: #666;
    transition: all var(--transition-fast);
}

.media-tag:hover {
    background: #e3f2fd;
    color: #1565c0;
}

.media-tag-active {
    background: var(--color-primary);
    color: #fff;
}

.media-album-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.media-album-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.media-album-cover {
    height: 120px;
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.media-album-type-badge {
    font-size: 32px;
}

.media-album-count {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 10px;
}

.media-album-info {
    padding: 10px 12px;
}

.media-album-title {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.media-preview-overlay {
    z-index: 3000;
}

.media-preview-modal {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    max-width: 90vw;
    max-height: 90vh;
    overflow: auto;
    margin: auto;
    position: relative;
}

.media-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    font-weight: 500;
}

.media-preview-body {
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.media-preview-info {
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

@media (max-width: 768px) {
    .media-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 10px;
    }
    .media-card-thumb {
        height: 120px;
    }
    .media-album-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 480px) {
    .media-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .media-card-thumb {
        height: 100px;
    }
}