/**
 * AI BotKit Chat Media Styles
 *
 * Styles for rich media support including:
 * - Media container and gallery
 * - Image display with lightbox
 * - Video embed responsive styles
 * - File attachment cards
 * - Link preview cards
 * - Upload preview and progress
 * - Drag and drop overlay
 *
 * @package AI_BotKit
 * @since 2.0.0
 *
 * Implements: FR-220 to FR-229 (Rich Media Support)
 */

/* =========================================================
   Media Button
   ========================================================= */

.ai-botkit-media-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    min-width: 36px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: #6b7280;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    align-self: center;
}

.ai-botkit-media-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.ai-botkit-media-btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.5);
}

.ai-botkit-media-btn svg {
    width: 20px;
    height: 20px;
}

/* =========================================================
   Media Preview Container
   ========================================================= */

.ai-botkit-media-preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px;
    margin: 8px 0;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
}

.ai-botkit-upload-preview {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    min-width: 240px;
    max-width: 320px;
}

.ai-botkit-upload-preview.success {
    border-color: #10b981;
    background: #ecfdf5;
}

.ai-botkit-upload-preview.error {
    border-color: #ef4444;
    background: #fef2f2;
}

.ai-botkit-preview-image,
.ai-botkit-preview-file {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f3f4f6;
    border-radius: 8px;
    overflow: hidden;
}

.ai-botkit-preview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ai-botkit-preview-file svg {
    width: 24px;
    height: 24px;
    color: #6b7280;
}

.ai-botkit-preview-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ai-botkit-preview-name {
    font-size: 14px;
    font-weight: 500;
    color: #1f2937;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ai-botkit-preview-size {
    font-size: 12px;
    color: #6b7280;
}

.ai-botkit-preview-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #e5e7eb;
    border-radius: 0 0 8px 8px;
    overflow: hidden;
}

.ai-botkit-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #60a5fa);
    transition: width 0.3s ease;
    width: 0;
}

.ai-botkit-preview-error {
    font-size: 12px;
    color: #ef4444;
    padding: 4px 8px;
}

.ai-botkit-preview-cancel {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    padding: 0;
    background: #ef4444;
    border: 2px solid #ffffff;
    border-radius: 50%;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.ai-botkit-preview-cancel:hover {
    transform: scale(1.1);
}

.ai-botkit-preview-cancel svg {
    width: 12px;
    height: 12px;
}

/* =========================================================
   Image Media
   ========================================================= */

.ai-botkit-media-image {
    display: inline-block;
    max-width: 100%;
    margin: 8px 0;
}

.ai-botkit-media-image a {
    display: block;
    cursor: zoom-in;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ai-botkit-media-image a:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.ai-botkit-media-image img {
    display: block;
    max-width: 100%;
    max-height: 400px;
    width: auto;
    height: auto;
    border-radius: 8px;
    background: #f3f4f6;
}

/* Loading placeholder */
.ai-botkit-media-image img[src=""] {
    min-height: 100px;
    background: linear-gradient(90deg, #f3f4f6 25%, #e5e7eb 50%, #f3f4f6 75%);
    background-size: 200% 100%;
    animation: ai-botkit-image-loading 1.5s infinite;
}

@keyframes ai-botkit-image-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Image gallery (multiple images) */
.ai-botkit-media-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 8px;
    margin: 8px 0;
}

.ai-botkit-media-gallery .ai-botkit-media-image {
    margin: 0;
}

.ai-botkit-media-gallery .ai-botkit-media-image img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

/* =========================================================
   Video Embed
   ========================================================= */

.ai-botkit-media-video {
    margin: 12px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.ai-botkit-video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
}

.ai-botkit-video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Video placeholder (before embed) */
.ai-botkit-video-placeholder {
    position: relative;
    cursor: pointer;
    border-radius: 8px;
    overflow: hidden;
}

.ai-botkit-video-placeholder img {
    width: 100%;
    display: block;
    transition: transform 0.3s ease;
}

.ai-botkit-video-placeholder:hover img {
    transform: scale(1.02);
}

.ai-botkit-video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.ai-botkit-video-placeholder:hover .ai-botkit-video-play {
    background: rgba(239, 68, 68, 0.9);
}

.ai-botkit-video-play svg {
    width: 28px;
    height: 28px;
    color: #ffffff;
    margin-left: 4px;
}

/* =========================================================
   File Attachment Card
   ========================================================= */

.ai-botkit-media-document {
    margin: 8px 0;
}

.ai-botkit-file-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.ai-botkit-file-card:hover {
    border-color: #d1d5db;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.ai-botkit-file-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
}

.ai-botkit-file-icon svg {
    width: 24px;
    height: 24px;
    color: #ef4444;
    /* PDF red */
}

.ai-botkit-file-card[data-type="doc"] .ai-botkit-file-icon svg,
.ai-botkit-file-card[data-type="docx"] .ai-botkit-file-icon svg {
    color: #3b82f6;
    /* Word blue */
}

.ai-botkit-file-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ai-botkit-file-name {
    font-size: 14px;
    font-weight: 500;
    color: #1f2937;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ai-botkit-file-size {
    font-size: 12px;
    color: #6b7280;
    text-transform: uppercase;
}

.ai-botkit-file-download {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #3b82f6;
    border-radius: 50%;
    color: #ffffff;
    text-decoration: none;
    transition: background 0.2s ease, transform 0.2s ease;
}

.ai-botkit-file-download:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

.ai-botkit-file-download svg {
    width: 18px;
    height: 18px;
}

/* =========================================================
   Link Preview Card
   ========================================================= */

.ai-botkit-media-link {
    margin: 8px 0;
}

.ai-botkit-link-card {
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.ai-botkit-link-card:hover {
    border-color: #3b82f6;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.ai-botkit-link-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    background: #f3f4f6;
}

.ai-botkit-link-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.ai-botkit-link-card:hover .ai-botkit-link-image img {
    transform: scale(1.02);
}

.ai-botkit-link-content {
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ai-botkit-link-site {
    font-size: 12px;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ai-botkit-link-title {
    font-size: 16px;
    font-weight: 600;
    color: #1f2937;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ai-botkit-link-description {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Compact link preview (no image) */
.ai-botkit-link-card.compact {
    flex-direction: row;
    padding: 12px 16px;
}

.ai-botkit-link-card.compact .ai-botkit-link-image {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    margin-right: 12px;
}

.ai-botkit-link-card.compact .ai-botkit-link-content {
    padding: 0;
}

/* =========================================================
   Lightbox
   ========================================================= */

.ai-botkit-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ai-botkit-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.ai-botkit-lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
}

.ai-botkit-lightbox-container {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    z-index: 1;
}

.ai-botkit-lightbox-content {
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-botkit-lightbox-content img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.ai-botkit-lightbox-close {
    position: absolute;
    top: -48px;
    right: 0;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.ai-botkit-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.ai-botkit-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.ai-botkit-lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.ai-botkit-lightbox-prev {
    left: -64px;
}

.ai-botkit-lightbox-next {
    right: -64px;
}

/* =========================================================
   Drag and Drop Overlay
   ========================================================= */

.ai-botkit-drop-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(59, 130, 246, 0.95);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    pointer-events: none;
}

.ai-botkit-drop-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.ai-botkit-drop-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: #ffffff;
}

.ai-botkit-drop-message svg {
    width: 64px;
    height: 64px;
    animation: ai-botkit-bounce 1s ease infinite;
}

.ai-botkit-drop-message span {
    font-size: 18px;
    font-weight: 500;
}

@keyframes ai-botkit-bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* =========================================================
   Message Media Container
   ========================================================= */

.ai-botkit-message-media {
    margin-top: 8px;
}

.ai-botkit-message-media>*:first-child {
    margin-top: 0;
}

.ai-botkit-message-media>*:last-child {
    margin-bottom: 0;
}

/* =========================================================
   Responsive Styles
   ========================================================= */

@media (max-width: 640px) {
    .ai-botkit-upload-preview {
        min-width: auto;
        max-width: 100%;
    }

    .ai-botkit-link-image {
        height: 140px;
    }

    .ai-botkit-media-gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .ai-botkit-media-gallery .ai-botkit-media-image img {
        height: 120px;
    }

    .ai-botkit-lightbox-nav {
        display: none;
    }

    .ai-botkit-lightbox-close {
        top: 16px;
        right: 16px;
    }

    /* Touch gestures hint */
    .ai-botkit-lightbox-content::after {
        content: 'Swipe to navigate';
        position: absolute;
        bottom: -32px;
        left: 50%;
        transform: translateX(-50%);
        font-size: 12px;
        color: rgba(255, 255, 255, 0.5);
    }
}

/* =========================================================
   Dark Mode Support
   ========================================================= */

@media (prefers-color-scheme: dark) {
    .ai-botkit-media-preview-container {
        background: #1f2937;
        border-color: #374151;
    }

    .ai-botkit-upload-preview {
        background: #111827;
        border-color: #374151;
    }

    .ai-botkit-preview-name {
        color: #f3f4f6;
    }

    .ai-botkit-file-card {
        background: #1f2937;
        border-color: #374151;
    }

    .ai-botkit-file-card:hover {
        border-color: #4b5563;
    }

    .ai-botkit-file-icon {
        background: #111827;
        border-color: #374151;
    }

    .ai-botkit-file-name {
        color: #f3f4f6;
    }

    .ai-botkit-link-card {
        background: #1f2937;
        border-color: #374151;
    }

    .ai-botkit-link-card:hover {
        border-color: #3b82f6;
    }

    .ai-botkit-link-image {
        background: #111827;
    }

    .ai-botkit-link-title {
        color: #f3f4f6;
    }
}

/* =========================================================
   Print Styles
   ========================================================= */

@media print {

    .ai-botkit-media-btn,
    .ai-botkit-media-preview-container,
    .ai-botkit-lightbox,
    .ai-botkit-drop-overlay {
        display: none !important;
    }

    .ai-botkit-media-video {
        break-inside: avoid;
    }

    .ai-botkit-video-wrapper {
        padding-bottom: 0;
        height: auto;
    }

    .ai-botkit-video-wrapper iframe {
        display: none;
    }

    .ai-botkit-video-wrapper::after {
        content: '[Video content - not available in print]';
        display: block;
        padding: 20px;
        text-align: center;
        color: #6b7280;
        font-style: italic;
    }

    .ai-botkit-media-image a {
        cursor: default;
    }

    .ai-botkit-link-card {
        break-inside: avoid;
    }
}

/* =========================================================
   Message Attachments (in chat bubbles)
   ========================================================= */

.ai-botkit-message-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.ai-botkit-message-attachment {
    font-size: 12px;
}

.ai-botkit-message-attachment a {
    color: #2271b1;
    text-decoration: none;
}

.ai-botkit-message-attachment a:hover {
    text-decoration: underline;
}

.ai-botkit-message-attachment-image {
    max-width: 160px;
}

.ai-botkit-message-attachment-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.ai-botkit-message-attachment-image a:hover img {
    opacity: 0.9;
}