/* ===================================
   Depth Transition Animation Styles
   =================================== */

/* Container */
.depth-transition-player {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-md, 1rem);
}

.depth-transition-canvas-container {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg, 0.75rem);
    overflow: hidden;
    background: var(--color-bg-card, #1a2234);
    box-shadow: var(--shadow-lg, 0 10px 15px rgba(0, 0, 0, 0.3));
}

/* Canvas */
.depth-transition-canvas {
    display: block;
    width: 100%;
    height: auto;
}

/* Labels */
.depth-transition-label {
    position: absolute;
    top: var(--space-md, 1rem);
    padding: var(--space-xs, 0.25rem) var(--space-sm, 0.5rem);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-sm, 0.375rem);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text, #f1f5f9);
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 10;
}

.depth-transition-label.before {
    left: var(--space-md, 1rem);
}

.depth-transition-label.after {
    right: var(--space-md, 1rem);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.8) 0%, rgba(139, 92, 246, 0.8) 100%);
}

/* Controls */
.depth-transition-controls {
    display: flex;
    align-items: center;
    gap: var(--space-md, 1rem);
    padding: var(--space-sm, 0.5rem) var(--space-md, 1rem);
    background: var(--color-bg-card, #1a2234);
    border: 1px solid var(--color-border, #2d3748);
    border-radius: var(--radius-lg, 0.75rem);
}

/* Control Buttons */
.depth-transition-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md, 0.5rem);
    color: var(--color-text, #f1f5f9);
    cursor: pointer;
    transition: all 0.2s ease;
}

.depth-transition-btn:hover {
    background: var(--color-bg-card-hover, #1f2943);
    color: var(--color-primary-hover, #818cf8);
}

.depth-transition-btn.play {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary, linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%));
    box-shadow: 0 0 20px var(--color-primary-glow, rgba(99, 102, 241, 0.4));
}

.depth-transition-btn.play:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px var(--color-primary-glow, rgba(99, 102, 241, 0.5));
}

.depth-transition-btn.play svg {
    margin-left: 2px; /* Optical centering for play icon */
}

/* Progress Bar */
.depth-transition-progress {
    flex: 1;
    height: 6px;
    background: var(--color-bg-elevated, #111827);
    border-radius: var(--radius-full, 9999px);
    cursor: pointer;
    overflow: hidden;
    transition: height 0.2s ease;
}

.depth-transition-progress:hover {
    height: 10px;
}

.depth-transition-progress-bar {
    width: 0%;
    height: 100%;
    background: var(--gradient-primary, linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%));
    border-radius: var(--radius-full, 9999px);
    transition: width 0.05s linear;
    box-shadow: 0 0 8px var(--color-primary-glow, rgba(99, 102, 241, 0.4));
}

/* Fallback (CSS-only transition) */
.depth-transition-fallback {
    position: relative;
    width: 100%;
}

.depth-transition-fallback .depth-transition-img {
    width: 100%;
    height: auto;
    display: block;
}

.depth-transition-fallback .depth-transition-img.after {
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity 0.1s linear;
}

/* ===================================
   Inline Player Variant (for cards)
   =================================== */
.depth-transition-player.inline {
    gap: var(--space-sm, 0.5rem);
}

.depth-transition-player.inline .depth-transition-controls {
    padding: var(--space-xs, 0.25rem) var(--space-sm, 0.5rem);
    background: transparent;
    border: none;
}

.depth-transition-player.inline .depth-transition-btn {
    width: 28px;
    height: 28px;
}

.depth-transition-player.inline .depth-transition-btn.play {
    width: 32px;
    height: 32px;
}

.depth-transition-player.inline .depth-transition-progress {
    height: 4px;
}

.depth-transition-player.inline .depth-transition-progress:hover {
    height: 6px;
}

/* ===================================
   Minimal Player (no visible controls)
   =================================== */
.depth-transition-player.minimal .depth-transition-controls {
    display: none;
}

.depth-transition-player.minimal .depth-transition-canvas-container {
    cursor: pointer;
}

/* ===================================
   Dark variant with glow effect
   =================================== */
.depth-transition-player.glow .depth-transition-canvas-container {
    box-shadow: 
        0 0 0 1px rgba(99, 102, 241, 0.2),
        0 10px 40px rgba(0, 0, 0, 0.4),
        0 0 60px rgba(99, 102, 241, 0.15);
}

.depth-transition-player.glow .depth-transition-canvas-container::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), transparent 50%, rgba(139, 92, 246, 0.3));
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.depth-transition-player.glow:hover .depth-transition-canvas-container::before {
    opacity: 1;
}

/* ===================================
   Loading State
   =================================== */
.depth-transition-canvas-container.loading {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.depth-transition-canvas-container.loading::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border, #2d3748);
    border-top-color: var(--color-primary, #6366f1);
    border-radius: 50%;
    animation: depth-transition-spin 0.8s linear infinite;
}

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

/* ===================================
   Responsive
   =================================== */
@media (max-width: 640px) {
    .depth-transition-controls {
        padding: var(--space-xs, 0.25rem) var(--space-sm, 0.5rem);
        gap: var(--space-sm, 0.5rem);
    }

    .depth-transition-btn {
        width: 32px;
        height: 32px;
    }

    .depth-transition-btn.play {
        width: 40px;
        height: 40px;
    }

    .depth-transition-label {
        font-size: 0.625rem;
        padding: 0.2rem 0.4rem;
    }
}