/* Reset y configuración base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

:root {
    /* Colores principales */
    --primary-bg: #0b0c10;
    --secondary-bg: #1f2833;
    --accent-color: #66fcf1;
    --accent-color-hover: #45a29e;
    --text-primary: #c5c6cc;
    --text-secondary: #8b8b8b;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #66fcf1 0%, #45a29e 100%);
    --gradient-secondary: linear-gradient(135deg, #1f2833 0%, #0b0c10 100%);
    --gradient-overlay: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    
    /* Sombras */
    --shadow-primary: 0 8px 32px rgba(102, 252, 241, 0.1);
    --shadow-secondary: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(102, 252, 241, 0.3);
    
    /* Bordes y transiciones */
    --border-radius: 12px;
    --border-radius-small: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Tamaños de fuente */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

body {
    background: var(--gradient-secondary);
    color: var(--text-primary);
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 400;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

/* Mejoras para modo oscuro automático */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-bg: #0b0c10;
        --secondary-bg: #1f2833;
        --text-primary: #c5c6cc;
        --text-secondary: #8b8b8b;
    }
}

/* Mejoras para modo claro (si se implementa) */
@media (prefers-color-scheme: light) {
    :root {
        --primary-bg: #0b0c10;
        --secondary-bg: #1f2833;
        --text-primary: #c5c6cc;
        --text-secondary: #8b8b8b;
    }
}

/* Contenedor principal */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(11, 12, 16, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(102, 252, 241, 0.1);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: var(--transition);
}

/* Mejoras para dispositivos móviles */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-sm);
        padding-top: calc(var(--spacing-sm) + env(safe-area-inset-top));
    }
}

/* Soporte para notch en iPhone */
@supports (padding: max(0px)) {
    .header {
        padding-top: max(var(--spacing-sm), env(safe-area-inset-top));
    }
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 50px;
    width: auto;
    filter: drop-shadow(0 2px 8px rgba(102, 252, 241, 0.3));
    transition: var(--transition);
}

.logo:hover {
    filter: drop-shadow(0 4px 16px rgba(102, 252, 241, 0.5));
    transform: scale(1.05);
}

.header-controls {
    display: flex;
    gap: 1rem;
}

/* Botones de control */
.control-btn {
    background: rgba(102, 252, 241, 0.1);
    border: 1px solid rgba(102, 252, 241, 0.3);
    color: var(--accent-color);
    padding: 0.75rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.control-btn:hover {
    background: rgba(102, 252, 241, 0.2);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.control-btn:active {
    transform: translateY(0);
}

.install-btn {
    background: var(--gradient-primary);
    color: var(--primary-bg);
    font-weight: 600;
}

.install-btn:hover {
    background: linear-gradient(135deg, #45a29e 0%, #66fcf1 100%);
}

/* Contenido principal */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Contenedor de video */
.video-container {
    position: relative;
    width: 100%;
    max-width: 900px;
    background: var(--secondary-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-secondary);
    border: 1px solid rgba(102, 252, 241, 0.1);
    transition: var(--transition);
}

.video-container:hover {
    box-shadow: var(--shadow-primary);
    transform: translateY(-2px);
}

#videoPlayer {
    width: 100%;
    height: auto;
    display: block;
    background: #000;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

/* Protección contra descarga de videos */
#videoPlayer::-webkit-media-controls {
    display: none !important;
}

#videoPlayer::-webkit-media-controls-enclosure {
    display: none !important;
}

#videoPlayer::-webkit-media-controls-panel {
    display: none !important;
}

/* Mejoras para dispositivos móviles */
@media (max-width: 768px) {
    .video-container {
        max-width: 100%;
        margin: 0 var(--spacing-sm);
        border-radius: var(--border-radius-small);
    }
    
    #videoPlayer {
        border-radius: var(--border-radius-small);
    }
}

/* Información del video */
.video-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--gradient-overlay);
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.video-container:hover .video-info,
.video-container:focus-within .video-info {
    opacity: 1;
    pointer-events: auto;
}

/* Mejoras para dispositivos móviles */
@media (max-width: 768px) {
    .video-info {
        padding: var(--spacing-md) var(--spacing-sm) var(--spacing-sm);
        opacity: 1;
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    }
}

.video-details {
    flex: 1;
}

.video-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.video-artist {
    font-size: 1.1rem;
    color: var(--accent-color);
    margin-bottom: 0.25rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.video-year {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.video-controls {
    display: flex;
    gap: 0.5rem;
}

/* Navegación de canales */
.channel-nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.channel-btn {
    background: rgba(102, 252, 241, 0.1);
    border: 2px solid rgba(102, 252, 241, 0.3);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    min-width: 200px;
    justify-content: center;
}

.channel-btn:hover {
    background: rgba(102, 252, 241, 0.2);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.channel-btn.active {
    background: var(--gradient-primary);
    border-color: var(--accent-color);
    color: var(--primary-bg);
    font-weight: 600;
    box-shadow: var(--shadow-primary);
}

.channel-icon {
    font-size: 1.5rem;
}

.channel-name {
    font-size: 1rem;
}

/* Estado del reproductor */
.player-status {
    width: 100%;
    max-width: 900px;
    text-align: center;
}

.status-message {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.progress-container {
    width: 100%;
    height: 4px;
    background: rgba(102, 252, 241, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 2px;
}

/* Overlay de carga */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 12, 16, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(102, 252, 241, 0.3);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    color: var(--accent-color);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-sm);
    }
    
    .logo {
        height: 40px;
    }
    
    .main-content {
        padding: var(--spacing-sm);
        gap: var(--spacing-md);
        padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom));
    }
    
    .video-title {
        font-size: var(--font-size-lg);
    }
    
    .video-artist {
        font-size: var(--font-size-base);
    }
    
    .channel-nav {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .channel-btn {
        min-width: 250px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .header-controls {
        gap: var(--spacing-xs);
    }
    
    .control-btn {
        padding: var(--spacing-xs);
        min-width: 44px;
        min-height: 44px;
    }
    
    .video-info {
        padding: var(--spacing-md) var(--spacing-sm) var(--spacing-sm);
    }
    
    .video-controls {
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-xs);
        gap: var(--spacing-sm);
    }
    
    .video-container {
        margin: 0;
        border-radius: var(--border-radius-small);
    }
    
    .video-title {
        font-size: var(--font-size-base);
    }
    
    .video-artist {
        font-size: var(--font-size-sm);
    }
    
    .channel-btn {
        min-width: 200px;
        padding: var(--spacing-sm);
    }
    
    .channel-icon {
        font-size: var(--font-size-xl);
    }
    
    .channel-name {
        font-size: var(--font-size-sm);
    }
    
    .status-message {
        font-size: var(--font-size-sm);
    }
}

/* Soporte para dispositivos con notch */
@supports (padding: max(0px)) {
    .main-content {
        padding-bottom: max(var(--spacing-sm), env(safe-area-inset-bottom));
    }
}

/* Mejoras para tablets */
@media (min-width: 769px) and (max-width: 1024px) {
    .main-content {
        padding: var(--spacing-md);
        gap: var(--spacing-lg);
    }
    
    .video-container {
        max-width: 800px;
    }
    
    .channel-nav {
        gap: var(--spacing-md);
    }
}

/* Mejoras para pantallas grandes */
@media (min-width: 1025px) {
    .main-content {
        padding: var(--spacing-lg);
        gap: var(--spacing-xl);
    }
    
    .video-container {
        max-width: 1000px;
    }
}

@media (max-width: 480px) {
    .video-info {
        padding: 1rem;
    }
    
    .video-title {
        font-size: 1rem;
    }
    
    .video-artist {
        font-size: 0.9rem;
    }
    
    .channel-btn {
        min-width: 200px;
        padding: 0.75rem 1rem;
    }
    
    .channel-icon {
        font-size: 1.2rem;
    }
    
    .channel-name {
        font-size: 0.9rem;
    }
}

/* Animaciones adicionales */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.video-container {
    animation: fadeIn 0.6s ease-out;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--primary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #45a29e;
}

/* Estados de focus para accesibilidad */
.control-btn:focus,
.channel-btn:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Footer */
.footer {
    background: rgba(11, 12, 16, 0.95);
    border-top: 1px solid rgba(102, 252, 241, 0.1);
    padding: 1rem 0;
    margin-top: auto;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
    margin: 0;
}

.footer-highlight {
    color: var(--accent-color);
    font-weight: 600;
    text-shadow: 0 0 10px rgba(102, 252, 241, 0.3);
}

/* Modo oscuro automático */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-bg: #0b0c10;
        --secondary-bg: #1f2833;
    }
}