/**
 * Admin Asset Upload Component
 * 
 * Modern upload interface with batch upload support, drag & drop,
 * and individual file progress tracking.
 * Uses BEM naming convention and design system tokens.
 */

.admin-asset-upload {
    padding: var(--space-lg, 1.5rem);
    background: var(--bg, oklch(100% 0 0));
}

/* Mode Toggle */
.admin-asset-upload__mode-toggle {
    display: flex;
    gap: var(--space-xs, 0.5rem);
    margin-bottom: var(--space-lg, 1.5rem);
    border-bottom: 1px solid var(--border-light, oklch(75% 0.02 280));
    padding-bottom: var(--space-md, 1rem);
}

.admin-asset-upload__mode-button {
    padding: var(--space-xs, 0.5rem) var(--space-md, 1rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: var(--radius-sm, 4px);
    color: var(--text, oklch(20% 0.02 280));
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--duration-default, 0.2s) var(--easing-default);
}

.admin-asset-upload__mode-button:hover {
    background: var(--bg-hover, oklch(90% 0.01 280));
    border-color: var(--accent-primary, oklch(60% 0.2 280));
}

.admin-asset-upload__mode-button--active {
    background: var(--accent-primary, oklch(60% 0.2 280));
    color: var(--bg, oklch(100% 0 0));
    border-color: var(--accent-primary, oklch(60% 0.2 280));
}

/* Upload Zone */
.admin-upload-zone {
    border: 2px dashed var(--border, oklch(70% 0.02 280));
    border-radius: var(--radius-md, 8px);
    padding: var(--space-xl, 3rem) var(--space-lg, 2rem);
    text-align: center;
    background: var(--bg-secondary, oklch(95% 0.01 280));
    transition: all var(--duration-default, 0.3s) var(--easing-default);
    margin-bottom: var(--space-lg, 1.5rem);
    cursor: pointer;
    position: relative;
}

.admin-upload-zone:hover {
    border-color: var(--accent-primary, oklch(60% 0.2 280));
    background: var(--bg-hover, oklch(92% 0.01 280));
}

.admin-upload-zone--dragover {
    border-color: var(--accent-primary, oklch(60% 0.2 280));
    background: oklch(60% 0.2 280 / 0.1);
    transform: scale(1.02);
}

.admin-upload-zone__icon {
    font-size: 3rem;
    margin-bottom: var(--space-md, 1rem);
    opacity: 0.7;
}

.admin-upload-zone__text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text, oklch(20% 0.02 280));
    margin-bottom: var(--space-xs, 0.5rem);
}

.admin-upload-zone__subtext {
    color: var(--muted, oklch(50% 0.01 280));
    font-size: 0.875rem;
    margin-bottom: var(--space-md, 1rem);
}

.admin-upload-zone__button {
    display: inline-block;
    background: var(--accent-primary, oklch(60% 0.2 280));
    color: var(--bg, oklch(100% 0 0));
    padding: var(--space-sm, 0.75rem) var(--space-lg, 1.5rem);
    border-radius: var(--radius-sm, 4px);
    cursor: pointer;
    transition: background var(--duration-default, 0.2s) var(--easing-default);
    font-weight: 500;
}

.admin-upload-zone__button:hover {
    background: var(--accent-primary-dark, oklch(50% 0.2 280));
}

.admin-upload-zone__input {
    display: none;
}

.admin-upload-zone__info {
    color: var(--muted, oklch(50% 0.01 280));
    font-size: 0.75rem;
    margin-top: var(--space-md, 1rem);
}

/* Batch Upload Queue */
.admin-asset-upload__batch-progress {
    margin-bottom: var(--space-lg, 1.5rem);
}

.admin-asset-upload__batch-progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md, 1rem);
}

.admin-asset-upload__batch-progress-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text, oklch(20% 0.02 280));
    margin: 0;
}

.admin-asset-upload__queue {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm, 0.75rem);
    margin-bottom: var(--space-md, 1rem);
}

.admin-upload-item {
    display: flex;
    gap: var(--space-md, 1rem);
    padding: var(--space-md, 1rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: var(--radius-md, 8px);
    transition: all var(--duration-default, 0.2s) var(--easing-default);
}

.admin-upload-item:hover {
    border-color: var(--border, oklch(70% 0.02 280));
    box-shadow: 0 2px 4px oklch(0% 0 0 / 0.05);
}

.admin-upload-item--uploading {
    border-color: var(--accent-primary, oklch(60% 0.2 280));
}

.admin-upload-item--success {
    border-color: var(--success, oklch(60% 0.2 150));
    background: oklch(60% 0.2 150 / 0.05);
}

.admin-upload-item--error {
    border-color: var(--error, oklch(60% 0.2 20));
    background: oklch(60% 0.2 20 / 0.05);
}

.admin-upload-item__preview {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    border-radius: var(--radius-sm, 4px);
    overflow: hidden;
    background: var(--bg, oklch(100% 0 0));
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-upload-item__preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.admin-upload-item__preview-icon {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary, oklch(95% 0.01 280));
    color: var(--muted, oklch(50% 0.01 280));
    font-size: 1.5rem;
    font-weight: 600;
}

.admin-upload-item__info {
    flex: 1;
    min-width: 0;
}

.admin-upload-item__filename {
    font-weight: 500;
    color: var(--text, oklch(20% 0.02 280));
    margin-bottom: var(--space-xs, 0.5rem);
    word-break: break-word;
}

.admin-upload-item__meta {
    display: flex;
    gap: var(--space-sm, 0.75rem);
    font-size: 0.75rem;
    color: var(--muted, oklch(50% 0.01 280));
    margin-bottom: var(--space-xs, 0.5rem);
}

.admin-upload-item__size,
.admin-upload-item__mime {
    display: inline-block;
}

.admin-upload-item__progress {
    margin-top: var(--space-xs, 0.5rem);
}

.admin-upload-item__success {
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    color: var(--success, oklch(60% 0.2 150));
    font-size: 0.875rem;
    margin-top: var(--space-xs, 0.5rem);
}

.admin-upload-item__asset-id {
    font-size: 0.75rem;
    opacity: 0.7;
    margin-left: var(--space-xs, 0.5rem);
}

.admin-upload-item__error {
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    color: var(--error, oklch(60% 0.2 20));
    font-size: 0.875rem;
    margin-top: var(--space-xs, 0.5rem);
}

.admin-upload-item__actions {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs, 0.5rem);
}

/* Overall Progress */
.admin-asset-upload__overall-progress {
    margin-top: var(--space-md, 1rem);
    padding-top: var(--space-md, 1rem);
    border-top: 1px solid var(--border-light, oklch(75% 0.02 280));
}

/* Single Upload Progress */
.admin-upload-progress {
    margin-bottom: var(--space-lg, 1.5rem);
}

.admin-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: var(--radius-sm, 4px);
    overflow: hidden;
    margin-bottom: var(--space-xs, 0.5rem);
}

.admin-progress-bar--sm {
    height: 6px;
}

.admin-progress-fill {
    height: 100%;
    background: var(--accent-primary, oklch(60% 0.2 280));
    transition: width var(--duration-default, 0.3s) var(--easing-default);
}

.admin-progress-text {
    font-size: 0.875rem;
    color: var(--muted, oklch(50% 0.01 280));
}

/* File Preview */
.admin-file-preview {
    margin-bottom: var(--space-lg, 1.5rem);
    padding: var(--space-md, 1rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: var(--radius-md, 8px);
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-file-preview__image {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm, 4px);
    margin-bottom: var(--space-md, 1rem);
}

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

/* Form */
.admin-asset-upload__form {
    margin-top: var(--space-lg, 1.5rem);
}

.admin-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg, 1.5rem);
}

.admin-form-field {
    display: flex;
    flex-direction: column;
}

.admin-form-label {
    display: block;
    font-weight: 500;
    color: var(--text, oklch(20% 0.02 280));
    margin-bottom: var(--space-xs, 0.5rem);
    font-size: 0.875rem;
}

.admin-input {
    width: 100%;
    padding: var(--space-xs, 0.625rem) var(--space-sm, 0.875rem);
    border: 1px solid var(--border, oklch(70% 0.02 280));
    border-radius: var(--radius-sm, 4px);
    background: var(--bg, oklch(100% 0 0));
    color: var(--text, oklch(20% 0.02 280));
    font-size: 0.875rem;
    transition: border-color var(--duration-default, 0.2s) var(--easing-default);
}

.admin-input:focus {
    outline: none;
    border-color: var(--accent-primary, oklch(60% 0.2 280));
    box-shadow: 0 0 0 3px oklch(60% 0.2 280 / 0.1);
}

.admin-form-help {
    color: var(--muted, oklch(50% 0.01 280));
    font-size: 0.75rem;
    margin-top: var(--space-xs, 0.25rem);
}

/* Alerts */
.admin-alert {
    padding: var(--space-md, 1rem);
    border-radius: var(--radius-sm, 4px);
    margin-bottom: var(--space-lg, 1.5rem);
}

.admin-alert--error {
    background: oklch(60% 0.2 20 / 0.1);
    border-left: 4px solid var(--error, oklch(60% 0.2 20));
    color: var(--error, oklch(60% 0.2 20));
}

.admin-alert--success {
    background: oklch(60% 0.2 150 / 0.1);
    border-left: 4px solid var(--success, oklch(60% 0.2 150));
    color: var(--success, oklch(60% 0.2 150));
}

/* Buttons */
.admin-btn {
    padding: var(--space-xs, 0.5rem) var(--space-md, 1rem);
    border: none;
    border-radius: var(--radius-sm, 4px);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background var(--duration-default, 0.2s) var(--easing-default);
}

.admin-btn--secondary {
    background: var(--bg-secondary, oklch(95% 0.01 280));
    color: var(--text, oklch(20% 0.02 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-btn--secondary:hover {
    background: var(--bg-hover, oklch(90% 0.01 280));
}

.admin-btn--danger {
    background: var(--error, oklch(60% 0.2 20));
    color: var(--bg, oklch(100% 0 0));
}

.admin-btn--danger:hover {
    background: oklch(50% 0.2 20);
}

.admin-btn--sm {
    padding: var(--space-xs, 0.375rem) var(--space-sm, 0.75rem);
    font-size: 0.75rem;
}