/* ================================================================
   VIDEO CAROUSEL & PORTFOLIO STYLES
   Version: 4.0.2
   FIX: @media (max-width: 768px) → 767px (breakpoint standard) x2
   NOTE: .video-embed-wrapper canonical definition lives here.
         09-page-specific.css carries only the margin-top override.
   WCAG 2.1 Level AA Compliant
   ================================================================ */

/* ================================================================
   CAROUSEL CONTAINER & STRUCTURE
   ================================================================ */

.carousel-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.video-carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg, 1rem);
    background: var(--bg-darkest, #0a0e1a);
}

.carousel-track {
    display: flex;
    transition: transform var(--transition-base, 250ms ease);
    will-change: transform;
}

.carousel-slide {
    min-width: 100%;
    flex-shrink: 0;
    padding: var(--space-md, 1rem);
}

/* ================================================================
   YOUTUBE EMBED WRAPPER (16:9 aspect ratio)
   Canonical definition — do not duplicate in 09-page-specific.css
   ================================================================ */

.video-embed-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-lg, 1rem);
    background-color: #000;
    box-shadow: var(--shadow-card-default);
}

.video-embed-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ================================================================
   SELF-HOSTED VIDEO CONTAINER
   ================================================================ */

.video-container {
    width: 100%;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg, 1rem);
}

.video-container video {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    object-position: center;
    display: block;
    border-radius: var(--radius-lg, 1rem);
}

.video-fallback {
    display: none;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius-lg, 1rem);
}

/* FIX: 768px → 767px */
@media (max-width: 767px), (prefers-reduced-motion: reduce) {
    .video-container video {
        display: none;
    }

    .video-fallback {
        display: block;
    }
}

/* ================================================================
   VIDEO CAPTION & METADATA
   ================================================================ */

.video-caption {
    padding: var(--space-md, 1rem);
    text-align: center;
}

.video-caption h3 {
    font-size: var(--font-size-xl, 1.25rem);
    font-family: var(--font-family-heading, 'Poppins', sans-serif);
    font-weight: 600;
    margin-bottom: var(--space-xs, 0.5rem);
    color: var(--text-primary, #ffffff);
}

.video-caption p {
    font-size: var(--font-size-base, 1rem);
    color: var(--text-secondary, #e0e4ea);
    margin-bottom: var(--space-sm, 1rem);
    line-height: var(--line-height-normal, 1.6);
}

.video-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    color: var(--color-primary-400, #ddd6fe);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-fast, 150ms ease);
    padding: var(--space-xs, 0.5rem);
}

.video-link:hover {
    color: var(--color-accent-400, #fb923c);
}

.video-link:focus-visible {
    outline: var(--focus-outline, 3px solid var(--color-accent-500));
    outline-offset: var(--focus-offset, 2px);
    border-radius: 4px;
}

/* ================================================================
   CAROUSEL NAVIGATION BUTTONS
   ================================================================ */

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    min-width: 44px;
    min-height: 44px;
    width: 48px;
    height: 48px;
    background: var(--glass-card-default, rgba(15, 22, 35, 0.6));
    backdrop-filter: var(--glass-blur-heavy, blur(8px));
    -webkit-backdrop-filter: var(--glass-blur-heavy, blur(8px));
    border: var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base, 250ms ease);
    box-shadow: var(--shadow-card-default);
}

.carousel-btn.prev {
    left: var(--space-md, 1rem);
}

.carousel-btn.next {
    right: var(--space-md, 1rem);
}

.carousel-btn svg {
    width: 24px;
    height: 24px;
    color: var(--text-primary, #ffffff);
    transition: color var(--transition-fast, 150ms ease);
    pointer-events: none;
}

.carousel-btn:hover {
    background: var(--glass-card-hover, rgba(21, 29, 45, 0.75));
    border: var(--glass-border-strong);
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-card-hover);
}

.carousel-btn:focus-visible {
    outline: var(--focus-outline, 3px solid var(--color-accent-500));
    outline-offset: var(--focus-offset, 2px);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.carousel-btn:active:not(:disabled) {
    transform: translateY(-50%) scale(0.95);
}

/* ================================================================
   CAROUSEL PAGINATION DOTS
   ================================================================ */

.carousel-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    padding: var(--space-md, 1rem) 0;
    margin: 0;
    list-style: none;
}

.carousel-dots button {
    min-width: 44px;
    min-height: 44px;
    width: 12px;
    height: 12px;
    padding: 16px;
    background: var(--glass-card-default, rgba(15, 22, 35, 0.6));
    border: var(--glass-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast, 150ms ease);
    position: relative;
    overflow: hidden;
}

.carousel-dots button span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.carousel-dots button[aria-selected="true"] {
    background: var(--color-primary-500, #b794f6);
    width: 32px;
    border-radius: 6px;
    box-shadow: var(--shadow-glow-lavender);
}

.carousel-dots button:hover {
    background: var(--glass-card-hover, rgba(21, 29, 45, 0.75));
    transform: scale(1.1);
}

.carousel-dots button:focus-visible {
    outline: var(--focus-outline, 3px solid var(--color-accent-500));
    outline-offset: var(--focus-offset, 2px);
}

/* ================================================================
   PORTFOLIO NOTE / DISCLAIMER
   ================================================================ */

.portfolio-note {
    margin-top: var(--space-lg, 2rem);
    padding: var(--space-md, 1rem);
    background: var(--glass-card-default, rgba(15, 22, 35, 0.6));
    backdrop-filter: var(--glass-blur-medium, blur(6px));
    -webkit-backdrop-filter: var(--glass-blur-medium, blur(6px));
    border-left: 4px solid var(--color-primary-500, #b794f6);
    border-radius: var(--radius-base, 0.5rem);
}

.portfolio-note p {
    margin: 0;
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-secondary, #e0e4ea);
    line-height: var(--line-height-normal, 1.6);
}

/* ================================================================
   SECTION INTRO TEXT
   ================================================================ */

.section-intro {
    text-align: center;
    font-size: var(--font-size-lg, 1.125rem);
    color: var(--text-secondary, #e0e4ea);
    margin-bottom: var(--space-lg, 2rem);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ================================================================
   RESPONSIVE ADJUSTMENTS
   ================================================================ */

/* FIX: 768px → 767px */
@media (max-width: 767px) {
    .carousel-btn {
        width: 44px;
        height: 44px;
    }

    .carousel-btn svg {
        width: 20px;
        height: 20px;
    }

    .carousel-btn.prev {
        left: var(--space-xs, 0.5rem);
    }

    .carousel-btn.next {
        right: var(--space-xs, 0.5rem);
    }

    .video-caption {
        padding: var(--space-sm, 0.5rem);
    }

    .video-caption h3 {
        font-size: var(--font-size-lg, 1.125rem);
    }
}

@media (max-width: 480px) {
    .carousel-slide {
        padding: var(--space-xs, 0.5rem);
    }

    .carousel-dots {
        gap: var(--space-xs, 0.25rem);
    }
}

/* ================================================================
   ACCESSIBILITY ENHANCEMENTS
   NOTE: .sr-only is defined in 02-base.css (canonical definition)
   ================================================================ */

@media (prefers-contrast: high) {
    .carousel-btn,
    .carousel-dots button {
        border-width: 3px;
    }

    .video-embed-wrapper {
        border: 2px solid currentColor;
    }
}

@media (prefers-reduced-motion: reduce) {
    .carousel-track,
    .carousel-btn,
    .carousel-dots button,
    .video-link {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    .carousel-btn:hover {
        transform: translateY(-50%) scale(1);
    }

    .carousel-dots button:hover {
        transform: scale(1);
    }
}