/**
 * Ken Burns Effect CSS
 *
 * Provides smooth pan/zoom animations for AI-generated images
 * displayed during voice conversations.
 */

/* Main Ken Burns container */
.kenburns-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    border-radius: 12px;
}

/* Image layer - holds both current and next images for crossfade */
.kenburns-image-layer {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Individual image styling */
.kenburns-image {
    position: absolute;
    width: 120%;
    height: 120%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    will-change: transform, opacity;
}

.kenburns-image.active {
    opacity: 1;
}

.kenburns-image.exiting {
    opacity: 0;
}

/* Ken Burns animation variants - randomly applied */
.kenburns-zoom-in-left {
    animation: kenburnsZoomInLeft 20s ease-in-out forwards;
}

.kenburns-zoom-in-right {
    animation: kenburnsZoomInRight 20s ease-in-out forwards;
}

.kenburns-zoom-out-left {
    animation: kenburnsZoomOutLeft 20s ease-in-out forwards;
}

.kenburns-zoom-out-right {
    animation: kenburnsZoomOutRight 20s ease-in-out forwards;
}

.kenburns-pan-left {
    animation: kenburnsPanLeft 20s ease-in-out forwards;
}

.kenburns-pan-right {
    animation: kenburnsPanRight 20s ease-in-out forwards;
}

/* Keyframe animations */
@keyframes kenburnsZoomInLeft {
    0% {
        transform: scale(1) translate(0, 0);
    }
    100% {
        transform: scale(1.08) translate(-3%, -2%);
    }
}

@keyframes kenburnsZoomInRight {
    0% {
        transform: scale(1) translate(0, 0);
    }
    100% {
        transform: scale(1.08) translate(3%, -2%);
    }
}

@keyframes kenburnsZoomOutLeft {
    0% {
        transform: scale(1.08) translate(-3%, -2%);
    }
    100% {
        transform: scale(1) translate(0, 0);
    }
}

@keyframes kenburnsZoomOutRight {
    0% {
        transform: scale(1.08) translate(3%, 2%);
    }
    100% {
        transform: scale(1) translate(0, 0);
    }
}

@keyframes kenburnsPanLeft {
    0% {
        transform: scale(1.04) translate(3%, 0);
    }
    100% {
        transform: scale(1.04) translate(-3%, 0);
    }
}

@keyframes kenburnsPanRight {
    0% {
        transform: scale(1.04) translate(-3%, 0);
    }
    100% {
        transform: scale(1.04) translate(3%, 0);
    }
}

/* Transcript overlay on Ken Burns images - elegant subtitle style */
.kenburns-transcript-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 56px 32px 40px;
    background: linear-gradient(
        to top,
        rgba(0, 0, 0, 0.75) 0%,
        rgba(0, 0, 0, 0.45) 45%,
        rgba(0, 0, 0, 0) 100%
    );
    pointer-events: none;
    z-index: 10;
}

.kenburns-transcript-text {
    color: #fff;
    /* Far larger, responsive caption sizing (scales with the player width) */
    font-size: clamp(36px, 6.5vw, 72px);
    line-height: 1.25;
    font-weight: 600;
    letter-spacing: 0.005em;
    text-align: center;
    text-wrap: balance;
    text-shadow:
        0 2px 6px rgba(0, 0, 0, 0.85),
        0 0 24px rgba(0, 0, 0, 0.7),
        0 0 48px rgba(0, 0, 0, 0.45);
    /* Clamp long replies to a few clean lines */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    /* Caption fade: hidden by default; .visible fades it in, removing it fades out */
    opacity: 0;
    transform: translateY(16px);
    filter: blur(4px);
    transition: opacity 0.55s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.55s cubic-bezier(0.4, 0, 0.2, 1),
                filter 0.55s ease;
    will-change: opacity, transform, filter;
}

.kenburns-transcript-text.visible {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

.kenburns-transcript-text.agent,
.kenburns-transcript-text.assistant {
    color: rgba(255, 255, 255, 0.95);
}

.kenburns-transcript-text.user {
    color: rgba(1, 164, 166, 0.9);
    font-style: italic;
    font-weight: 300;
}

/* Loading state for image generation */
.kenburns-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.8);
    z-index: 5;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.kenburns-loading.active {
    opacity: 1;
    visibility: visible;
}

.kenburns-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(1, 164, 166, 0.3);
    border-top-color: #01a4a6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.kenburns-loading-text {
    margin-top: 12px;
    color: #a0a0a0;
    font-size: 13px;
}

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

/* Placeholder when no image is loaded yet */
.kenburns-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}

.kenburns-placeholder-icon {
    width: 64px;
    height: 64px;
    color: #333;
    margin-bottom: 16px;
}

.kenburns-placeholder-text {
    color: #666;
    font-size: 14px;
    text-align: center;
}

/* Image generation notification */
.kenburns-notification {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 8px 12px;
    background: rgba(1, 164, 166, 0.2);
    border: 1px solid rgba(1, 164, 166, 0.4);
    border-radius: 8px;
    color: #01a4a6;
    font-size: 12px;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 15;
}

.kenburns-notification.show {
    opacity: 1;
    transform: translateY(0);
}

/* Generation time badge */
.kenburns-gen-time {
    position: absolute;
    bottom: 8px;
    right: 8px;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 4px;
    color: #666;
    font-size: 10px;
    z-index: 5;
}