/**
 * Video Player CSS - AKT Video Player Element
 * 
 * Responsive video player component following BEM methodology
 * Features:
 * - Responsive design with aspect ratios
 * - Accessibility support
 * - Touch-friendly controls
 * - Loading states and error handling
 * - Progressive enhancement
 * - No border radius (as per requirements)
 */

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

:root {
    --akt-video-player-transition: all 0.3s ease;
    --akt-video-player-focus-color: #0071b4;
    --akt-video-player-overlay-bg: rgba(0, 0, 0, 0.7);
    --akt-video-player-text-color: #363d52;
    --akt-video-player-error-color: #dc2626;
    --akt-video-player-loading-color: #6b7280;
}

/* ==========================================================================
   Base Component
   ========================================================================== */

.akt-video-player {
    position: relative;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
}

.akt-video-player *,
.akt-video-player *::before,
.akt-video-player *::after {
    box-sizing: border-box;
}

/* ==========================================================================
   Title
   ========================================================================== */

.akt-video-player__title {
    margin: 0 0 1rem 0;
    padding: 0;
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.2;
    color: var(--akt-video-player-text-color);
    text-align: inherit;
}

/* ==========================================================================
   Video Container
   ========================================================================== */

.akt-video-player__container {
    position: relative;
    width: 100%;
    background: #f3f4f6;
    overflow: hidden;
    border-radius: 0; /* No border radius as per requirements */
}

/* ==========================================================================
   Aspect Ratios
   ========================================================================== */

.akt-video-player--aspect-16-9 .akt-video-player__container {
    aspect-ratio: 16 / 9;
}

.akt-video-player--aspect-4-3 .akt-video-player__container {
    aspect-ratio: 4 / 3;
}

.akt-video-player--aspect-1-1 .akt-video-player__container {
    aspect-ratio: 1 / 1;
}

.akt-video-player--aspect-21-9 .akt-video-player__container {
    aspect-ratio: 21 / 9;
}

.akt-video-player--aspect-auto .akt-video-player__container {
    aspect-ratio: auto;
}

/* ==========================================================================
   Video Element
   ========================================================================== */

.akt-video-player__video {
    position: relative;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
    background: #000;
    outline: none;
    border: none;
    border-radius: 0;
}

/* Focus styles for accessibility */
.akt-video-player__video:focus {
    outline: none;
}

/* ==========================================================================
   Width Variations
   ========================================================================== */

.akt-video-player--width-full {
    width: 100%;
    max-width: 100%;
}

.akt-video-player--width-large {
    width: 100%;
    max-width: 80%;
}

.akt-video-player--width-medium {
    width: 100%;
    max-width: 60%;
}

.akt-video-player--width-small {
    width: 100%;
    max-width: 40%;
}

.akt-video-player--width-custom {
    width: 100%;
    /* Max-width is set via inline styles */
}

/* ==========================================================================
   Alignment
   ========================================================================== */

.akt-video-player--align-center {
    margin-left: auto;
    margin-right: auto;
}

.akt-video-player--align-left {
    margin-left: 0;
    margin-right: auto;
}

.akt-video-player--align-right {
    margin-left: auto;
    margin-right: 0;
}

/* ==========================================================================
   Play Overlay (Custom Play Button)
   ========================================================================== */

.akt-video-player__play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    cursor: pointer;
    color: white;
    background: var(--akt-video-player-overlay-bg);
    padding: 1rem;
    border-radius: 0; /* No border radius */
    transition: var(--akt-video-player-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid transparent;
}

.akt-video-player__play-overlay:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: translate(-50%, -50%) scale(1.1);
}

.akt-video-player__play-overlay:focus {
    outline: none;
    border-color: var(--akt-video-player-focus-color);
    background: rgba(0, 0, 0, 0.8);
}

.akt-video-player__play-icon {
    display: block;
    width: 64px;
    height: 64px;
    pointer-events: none;
}

.akt-video-player__play-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* ==========================================================================
   Loading Indicator
   ========================================================================== */

.akt-video-player__loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--akt-video-player-loading-color);
    pointer-events: none;
}

.akt-video-player__loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--akt-video-player-loading-color);
    animation: akt-spin 1s linear infinite;
    margin-bottom: 0.5rem;
}

.akt-video-player__loading-text {
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
}

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

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

.akt-video-player__error,
.akt-video-player__fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    text-align: center;
    color: var(--akt-video-player-error-color);
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 0; /* No border radius */
    min-height: 200px;
}

.akt-video-player__error-icon,
.akt-video-player__fallback-icon {
    margin-bottom: 1rem;
    opacity: 0.7;
}

.akt-video-player__error-message,
.akt-video-player__fallback p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.5;
}

.akt-video-player__fallback a {
    color: var(--akt-video-player-focus-color);
    text-decoration: underline;
    font-weight: 500;
}

.akt-video-player__fallback a:hover {
    text-decoration: none;
}

.akt-video-player__fallback-image {
    margin-top: 1rem;
    max-width: 100%;
    height: auto;
    border-radius: 0;
}

/* ==========================================================================
   Description
   ========================================================================== */

.akt-video-player__description {
    margin-top: 1rem;
    color: var(--aktd-color-font);
    text-align:center;
    font-size: 1rem;
    line-height: 1.6;
}

.akt-video-player__description p {
    margin: 0 0 1rem 0;
}

.akt-video-player__description p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   Animation Support
   ========================================================================== */

.akt-video-player.akt-animated {
    opacity: 0;
    transition: var(--akt-video-player-transition);
}

.akt-video-player.akt-animated.akt-fadeIn {
    animation: aktFadeIn 0.6s ease-out forwards;
}

.akt-video-player.akt-animated.akt-slideInUp {
    animation: aktSlideInUp 0.6s ease-out forwards;
}

.akt-video-player.akt-animated.akt-slideInLeft {
    animation: aktSlideInLeft 0.6s ease-out forwards;
}

.akt-video-player.akt-animated.akt-slideInRight {
    animation: aktSlideInRight 0.6s ease-out forwards;
}

.akt-video-player.akt-animated.akt-zoomIn {
    animation: aktZoomIn 0.6s ease-out forwards;
}

@keyframes aktFadeIn {
    to {
        opacity: 1;
    }
}

@keyframes aktSlideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes aktSlideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes aktSlideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes aktZoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
    .akt-video-player__title {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }
    
    .akt-video-player__play-icon {
        width: 48px;
        height: 48px;
    }
    
    .akt-video-player__play-overlay {
        padding: 0.75rem;
    }
    
    .akt-video-player__error,
    .akt-video-player__fallback {
        padding: 1.5rem 1rem;
        min-height: 150px;
    }
    
    .akt-video-player__description {
        font-size: 0.875rem;
    }
    
    /* Mobile width adjustments */
    .akt-video-player--width-small,
    .akt-video-player--width-medium,
    .akt-video-player--width-large {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .akt-video-player__title {
        font-size: 1.125rem;
    }
    
    .akt-video-player__play-icon {
        width: 40px;
        height: 40px;
    }
    
    .akt-video-player__loading-spinner {
        width: 24px;
        height: 24px;
        border-width: 2px;
    }
    
    .akt-video-player__loading-text {
        font-size: 0.75rem;
    }
}

/* ==========================================================================
   High DPI / Retina Support
   ========================================================================== */

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .akt-video-player__video {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

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

@media print {
    .akt-video-player__play-overlay,
    .akt-video-player__loading {
        display: none !important;
    }
    
    .akt-video-player__video {
        background: #f3f4f6 !important;
    }
    
    .akt-video-player__fallback-image {
        max-height: 300px;
        object-fit: contain;
    }
}

/* ==========================================================================
   Dark Mode Support (Optional)
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --akt-video-player-text-color: #f3f4f6;
        --akt-video-player-loading-color: #9ca3af;
    }
    
    .akt-video-player__container {
        background: #1f2937;
    }
    
    .akt-video-player__error,
    .akt-video-player__fallback {
        background: #1f1f1f;
        border-color: #374151;
        color: #ef4444;
    }
}

/* ==========================================================================
   Accessibility Enhancements
   ========================================================================== */

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .akt-video-player *,
    .akt-video-player *::before,
    .akt-video-player *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .akt-video-player__play-overlay:hover {
        transform: translate(-50%, -50%);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .akt-video-player__video:focus {
        outline-width: 3px;
    }
    
    .akt-video-player__play-overlay {
        background: rgba(0, 0, 0, 0.9);
        border: 2px solid white;
    }
    
    .akt-video-player__play-overlay:focus {
        border-color: yellow;
    }
}