/**
 * Funky.FileUpload - CSS Styles
 * @version 1.0.4
 */

/* ============================================
   CSS Variables (defined at :root for global access)
   ============================================ */
:root {
    --upload-border-color: var(--pro-border-color, #dee2e6);
    --upload-border-color-active: var(--pro-primary, #0d6efd);
    --upload-bg: var(--pro-bg-secondary, #f8f9fa);
    --upload-bg-active: var(--pro-bg-tertiary, #e9ecef);
    --upload-progress-bg: var(--pro-primary, #0d6efd);
    --upload-error-color: var(--pro-danger, #dc3545);
    --upload-success-color: var(--pro-success, #198754);
    --upload-icon-size: 48px;
    --upload-radius: var(--pro-radius, 8px);
    --upload-radius-sm: var(--pro-radius-sm, 4px);
}

/* ============================================
   Dropzone
   ============================================ */
.funky-upload__dropzone {
    border: 2px dashed var(--upload-border-color);
    border-radius: var(--upload-radius);
    background: var(--upload-bg);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.funky-upload__dropzone:hover {
    border-color: var(--upload-border-color-active);
}

.funky-upload__dropzone:focus-within {
    outline: 2px solid var(--pro-focus-ring, var(--upload-border-color-active));
    outline-offset: 2px;
}

/* Drag Over State */
.funky-upload--dragover .funky-upload__dropzone {
    border-color: var(--upload-border-color-active);
    background: var(--upload-bg-active);
    border-style: solid;
}

/* Icon */
.funky-upload__icon {
    font-size: var(--upload-icon-size);
    color: var(--pro-text-muted);
    margin-bottom: 16px;
    display: block;
}

.funky-upload--dragover .funky-upload__icon {
    color: var(--upload-border-color-active);
    animation: funky-upload-bounce 0.5s ease;
}

@keyframes funky-upload-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* Text */
.funky-upload__text {
    color: var(--pro-text-secondary);
    margin: 0 0 8px;
    font-size: 14px;
}

.funky-upload__browse {
    background: none;
    border: none;
    color: var(--pro-primary);
    cursor: pointer;
    text-decoration: underline;
    font-size: inherit;
    padding: 0;
}

.funky-upload__browse:hover {
    color: var(--pro-primary-hover, var(--pro-primary));
}

.funky-upload__browse:focus {
    outline: 2px solid var(--pro-focus-ring, var(--pro-primary));
    outline-offset: 2px;
}

.funky-upload__hint {
    font-size: 12px;
    color: var(--pro-text-muted);
    margin: 0;
}

/* ============================================
   File List
   ============================================ */
.funky-upload__list {
    list-style: none;
    padding: 0;
    margin: 16px 0 0;
}

.funky-upload__list:empty {
    display: none;
}

.funky-upload__item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--pro-bg-secondary);
    border: 1px solid var(--pro-border-color);
    border-radius: var(--upload-radius);
    margin-bottom: 8px;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.funky-upload__item:last-child {
    margin-bottom: 0;
}

/* File Preview */
.funky-upload__preview {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--pro-bg-tertiary);
    border-radius: var(--upload-radius-sm);
    color: var(--pro-text-muted);
    flex-shrink: 0;
    font-size: 18px;
}

.funky-upload__preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--upload-radius-sm);
}

/* File Info */
.funky-upload__info {
    flex: 1;
    min-width: 0;
}

.funky-upload__name {
    display: block;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--pro-text-primary);
    font-size: 14px;
}

.funky-upload__size {
    font-size: 12px;
    color: var(--pro-text-muted);
}

/* ============================================
   Progress Bar
   ============================================ */
.funky-upload__progress {
    width: 100px;
    height: 4px;
    background: var(--pro-bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
    flex-shrink: 0;
}

.funky-upload__progress-bar {
    height: 100%;
    width: 0;
    background: var(--upload-progress-bg);
    transition: width 0.2s ease;
    border-radius: 2px;
}

/* Uploading animation */
.funky-upload__item--uploading .funky-upload__progress-bar {
    background: linear-gradient(
        90deg,
        var(--upload-progress-bg) 0%,
        var(--pro-primary-hover, var(--upload-progress-bg)) 50%,
        var(--upload-progress-bg) 100%
    );
    background-size: 200% 100%;
    animation: funky-upload-progress 1.5s linear infinite;
}

@keyframes funky-upload-progress {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Complete state */
.funky-upload__item--complete .funky-upload__progress-bar {
    background: var(--upload-success-color);
    width: 100%;
}

.funky-upload__item--complete .funky-upload__preview {
    color: var(--upload-success-color);
}

/* Error state */
.funky-upload__item--error .funky-upload__progress-bar {
    background: var(--upload-error-color);
}

.funky-upload__item--error {
    border-color: var(--upload-error-color);
}

.funky-upload__item--error .funky-upload__preview {
    color: var(--upload-error-color);
}

/* ============================================
   Actions
   ============================================ */
.funky-upload__actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.funky-upload__cancel,
.funky-upload__retry {
    background: none;
    border: none;
    color: var(--pro-text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--upload-radius-sm);
    transition: color 0.2s ease, background-color 0.2s ease;
    font-size: 14px;
}

.funky-upload__cancel:hover {
    color: var(--upload-error-color);
    background: rgba(var(--pro-danger-rgb, 220, 53, 69), 0.1);
}

.funky-upload__retry:hover {
    color: var(--pro-primary);
    background: rgba(var(--pro-primary-rgb, 0, 123, 255), 0.1);
}

.funky-upload__cancel:focus,
.funky-upload__retry:focus {
    outline: 2px solid var(--pro-focus-ring, var(--pro-primary));
    outline-offset: 2px;
}

/* ============================================
   Footer
   ============================================ */
.funky-upload__footer {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.funky-upload__footer:empty {
    display: none;
}

/* ============================================
   States
   ============================================ */

/* Idle - no special styles needed */
.funky-upload--idle .funky-upload__footer {
    display: none;
}

/* Uploading */
.funky-upload--uploading .funky-upload__upload-all {
    opacity: 0.6;
    pointer-events: none;
}

/* Complete */
.funky-upload--complete .funky-upload__upload-all {
    display: none;
}

/* ============================================
   Phase 2: Thumbnail Previews
   ============================================ */
.funky-upload__preview {
    position: relative;
}

.funky-upload__preview--loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--pro-border-color);
    border-top-color: var(--pro-primary);
    border-radius: 50%;
    animation: funky-upload-spin 0.8s linear infinite;
}

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

.funky-upload__thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--upload-radius-sm);
}

.funky-upload__preview--image {
    cursor: zoom-in;
}

.funky-upload__preview--video {
    position: relative;
}

.funky-upload__video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    color: white;
    font-size: 20px;
    border-radius: var(--upload-radius-sm);
    pointer-events: none;
}

/* ============================================
   Phase 2: Drag Reorder
   ============================================ */
.funky-upload__item[draggable="true"] {
    cursor: grab;
}

.funky-upload__item--dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.funky-upload__placeholder {
    border: 2px dashed var(--pro-primary);
    border-radius: var(--upload-radius);
    background: var(--pro-bg-tertiary);
    margin-bottom: 8px;
    list-style: none;
}

/* ============================================
   Phase 2: Rename Input
   ============================================ */
.funky-upload__name-wrapper {
    display: flex;
    align-items: center;
    gap: 4px;
}

.funky-upload__edit {
    background: none;
    border: none;
    color: var(--pro-text-muted);
    cursor: pointer;
    padding: 2px 4px;
    font-size: 11px;
    opacity: 0;
    transition: opacity 0.2s, color 0.2s;
    border-radius: var(--upload-radius-sm);
}

.funky-upload__item:hover .funky-upload__edit {
    opacity: 1;
}

.funky-upload__edit:hover {
    color: var(--pro-primary);
}

.funky-upload__edit:focus {
    opacity: 1;
    outline: 2px solid var(--pro-focus-ring, var(--pro-primary));
    outline-offset: 2px;
}

.funky-upload__rename-input {
    font-size: inherit;
    font-family: inherit;
    padding: 2px 6px;
    border: 1px solid var(--pro-primary);
    border-radius: var(--upload-radius-sm);
    background: var(--pro-bg);
    color: var(--pro-text);
    width: 150px;
    max-width: 100%;
}

.funky-upload__rename-input:focus {
    outline: 2px solid var(--pro-focus-ring, var(--pro-primary));
    outline-offset: 2px;
}

/* ============================================
   Phase 2: Animated Transitions
   ============================================ */
.funky-upload__item {
    opacity: 0;
    transform: translateY(-10px);
}

.funky-upload__item--visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

/* ============================================
   Phase 2: Lightbox
   ============================================ */
.funky-upload__lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: funky-upload-fadeIn 0.2s ease;
}

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

.funky-upload__lightbox-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.funky-upload__lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.funky-upload__lightbox-close:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

.funky-upload__lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.funky-upload__lightbox-img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--upload-radius);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

/* ============================================
   Phase 3: Paused State
   ============================================ */
.funky-upload__item--paused {
    opacity: 0.7;
}

.funky-upload__item--paused .funky-upload__progress-bar {
    background: var(--pro-warning, #ffc107);
}

/* ============================================
   Phase 3: Retrying State
   ============================================ */
.funky-upload__item--retrying .funky-upload__progress-bar {
    animation: funky-upload-pulse 1s ease infinite;
}

@keyframes funky-upload-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   Phase 3: Speed Display
   ============================================ */
.funky-upload__speed {
    display: block;
    font-size: 11px;
    color: var(--pro-text-muted);
    margin-top: 2px;
}

/* ============================================
   Phase 3: Status Messages
   ============================================ */
.funky-upload__status {
    display: block;
    font-size: 11px;
    color: var(--pro-warning, #ffc107);
    margin-top: 2px;
}

/* ============================================
   Phase 3: Pause/Resume Button
   ============================================ */
.funky-upload__pause {
    background: none;
    border: none;
    color: var(--pro-text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--upload-radius-sm);
    transition: color 0.2s, background-color 0.2s;
    font-size: 14px;
}

.funky-upload__pause:hover {
    color: var(--pro-primary);
    background: rgba(var(--pro-primary-rgb, 0, 123, 255), 0.1);
}

.funky-upload__pause:focus {
    outline: 2px solid var(--pro-focus-ring, var(--pro-primary));
    outline-offset: 2px;
}

.funky-upload__item--paused .funky-upload__pause {
    color: var(--pro-success, #28a745);
}

.funky-upload__item--paused .funky-upload__pause:hover {
    background: rgba(var(--pro-success-rgb, 40, 167, 69), 0.1);
}

/* ============================================
   Phase 3: Chunk Progress
   ============================================ */
.funky-upload__chunks {
    display: inline-block;
    font-size: 10px;
    color: var(--pro-text-muted);
    margin-left: 8px;
    padding: 2px 6px;
    background: var(--pro-bg-tertiary);
    border-radius: var(--upload-radius-sm);
}

/* ============================================
   Phase 3: Offline Queued State
   ============================================ */
.funky-upload__item--offline {
    border-style: dashed;
}

.funky-upload__item--offline .funky-upload__progress-bar {
    background: var(--pro-text-muted);
}

.funky-upload__item--offline::after {
    content: 'Queued offline';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 10px;
    color: var(--pro-text-muted);
    background: var(--pro-bg-tertiary);
    padding: 2px 6px;
    border-radius: var(--upload-radius-sm);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 576px) {
    .funky-upload__dropzone {
        padding: 24px 16px;
    }
    
    .funky-upload__icon {
        font-size: 36px;
    }
    
    .funky-upload__item {
        flex-wrap: wrap;
    }
    
    .funky-upload__progress {
        width: 100%;
        order: 10;
        margin-top: 8px;
    }
    
    .funky-upload__actions {
        margin-left: auto;
    }
    
    .funky-upload__footer {
        flex-direction: column;
    }
    
    .funky-upload__footer .btn {
        width: 100%;
    }
    
    /* Phase 2: Mobile lightbox */
    .funky-upload__lightbox-close {
        top: 8px;
        right: 8px;
    }
    
    /* Always show edit button on mobile */
    .funky-upload__edit {
        opacity: 1;
    }
    
    /* Phase 3: Mobile speed display */
    .funky-upload__speed {
        font-size: 10px;
    }
    
    .funky-upload__chunks {
        display: block;
        margin-left: 0;
        margin-top: 4px;
    }
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .funky-upload__dropzone,
    .funky-upload__item,
    .funky-upload__item--visible,
    .funky-upload__progress-bar,
    .funky-upload__cancel,
    .funky-upload__retry,
    .funky-upload__edit,
    .funky-upload__pause,
    .funky-upload__lightbox,
    .funky-upload__lightbox-close {
        transition: none;
        animation: none;
    }
    
    .funky-upload--dragover .funky-upload__icon,
    .funky-upload__item--uploading .funky-upload__progress-bar,
    .funky-upload__item--retrying .funky-upload__progress-bar,
    .funky-upload__preview--loading::after {
        animation: none;
    }
    
    .funky-upload__item {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   High Contrast Mode Support
   ============================================ */
@media (forced-colors: active) {
    .funky-upload__dropzone {
        border-color: CanvasText;
    }
    
    .funky-upload--dragover .funky-upload__dropzone {
        border-color: Highlight;
    }
    
    .funky-upload__item--error {
        border-color: Mark;
    }
    
    .funky-upload__item--paused {
        border-color: Highlight;
    }
    
    .funky-upload__progress-bar {
        background: Highlight;
    }
    
    .funky-upload__item--error .funky-upload__progress-bar {
        background: Mark;
    }
    
    .funky-upload__item--paused .funky-upload__progress-bar {
        background: LinkText;
    }
    
    .funky-upload__placeholder {
        border-color: Highlight;
    }
    
    .funky-upload__lightbox {
        background: Canvas;
    }
    
    .funky-upload__lightbox-close {
        background: ButtonFace;
        color: ButtonText;
        border: 1px solid ButtonText;
    }
}

/* ============================================
   Phase 7: Form Integration
   ============================================ */

/* Form field wrapper */
.form-field--file-upload {
    margin-bottom: var(--pro-spacing-md, 16px);
}

.form-field--file-upload .form-label {
    display: block;
    margin-bottom: var(--pro-spacing-xs, 8px);
    font-weight: 500;
    color: var(--pro-text-primary);
}

.form-field--file-upload .form-field__upload {
    margin-bottom: var(--pro-spacing-xs, 8px);
}

/* Error state in form context */
.form-field--file-upload.has-error .funky-upload__dropzone {
    border-color: var(--upload-error-color);
}

.form-field--file-upload .form-error {
    color: var(--upload-error-color);
    font-size: 12px;
    margin-top: var(--pro-spacing-xs, 4px);
}

/* Preloaded file styling */
.funky-upload__item--preloaded {
    background: var(--pro-bg-secondary);
}

.funky-upload__item--preloaded .funky-upload__status--uploaded {
    color: var(--upload-success-color);
    font-size: 11px;
    font-weight: 500;
}

/* Required field indicator */
.form-field--file-upload.is-required .form-label::after {
    content: ' *';
    color: var(--upload-error-color);
}

/* Validation pending state */
.form-field--file-upload.is-validating .funky-upload__dropzone {
    opacity: 0.7;
    pointer-events: none;
}