/* ============================================
   SÚPER CONDUCTOR PLUS V3 - STYLES
   🎨 Tema oscuro + Amarillo ámbar + Sorpresas
   ============================================ */

/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
    /* Colores principales */
    --color-bg: #0a0a0a;
    --color-bg-secondary: #1a1a1a;
    --color-text: #ffffff;
    --color-text-secondary: #cccccc;
    
    /* Controles de audio - Amarillo ámbar */
    --color-controls: #ffbf00;
    --color-controls-hover: #ffdb4d;
    --color-controls-active: #e6ac00;
    
    /* Géneros */
    --color-genre-on: #fff;
    --color-genre-off: #333333;
    
    /* Sorpresas */
    --color-accent-1: #ff6b00; /* Naranja vibrante */
    --color-accent-2: #9D4EDD; /* Púrpura eléctrico */
    --color-like: #ff0000; /* Rojo corazón */
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #ffbf00 0%, #ff6b00 100%);
    --gradient-secondary: linear-gradient(135deg, #9D4EDD 0%, #00ff00 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0a 0%, #1a1a1a 100%);
    
    /* Sombras */
    --shadow-small: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.6);
    --shadow-large: 0 8px 32px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(255, 191, 0, 0.5);
    --shadow-glow-green: 0 0 20px rgba(0, 255, 0, 0.5);
    
    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 50%;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   RESET & BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gradient-dark);
    color: var(--color-text);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
    background: none;
    color: inherit;
}

input, textarea {
    font-family: inherit;
    color: inherit;
}

/* ============================================
   CONTENEDOR PRINCIPAL
   ============================================ */
.app-container {
    max-width: 600px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
}

/* ============================================
   HEADER
   ============================================ */
.header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glow);
}

.title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: #000;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* ============================================
   INDICADORES DE GÉNERO
   ============================================ */
.genre-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    padding: 0 var(--spacing-sm);
}

.indicator {
    font-size: 1.5rem;
    color: var(--color-genre-off);
    transition: var(--transition-fast);
    cursor: pointer;
    user-select: none;
}

.indicator.active {
    color: var(--color-genre-on);
    filter: drop-shadow(0 0 8px var(--color-genre-on));
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.indicator:hover {
    transform: scale(1.2);
}

/* ============================================
   CONTROLES DE AUDIO
   ============================================ */
.controls {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-medium);
    transition: all 0.5s ease-in-out;
}

/* Modo minimizado (solo móviles) */
@media (max-width: 767px) {
    .controls.minimized {
        padding: var(--spacing-sm) var(--spacing-lg);
        margin-bottom: var(--spacing-sm);
    }
    
    .controls.minimized .control-buttons {
        display: none;
    }
    
    .controls.minimized .btn-secondary {
        display: none;
    }
    
    .controls.minimized .progress-section {
        cursor: pointer;
        padding: var(--spacing-xs) 0;
    }
    
    /* Indicador visual de que es clickeable */
    .controls.minimized .progress-bar {
        box-shadow: 0 0 10px rgba(255, 191, 0, 0.3);
    }
}

.control-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.btn-control {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--color-controls);
    color: #000;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-small);
}

.btn-control:hover {
    background: var(--color-controls-hover);
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.btn-control:active {
    background: var(--color-controls-active);
    transform: scale(0.95);
}

.btn-play-pause {
    width: 72px;
    height: 72px;
    font-size: 2rem;
    background: var(--gradient-primary);
    box-shadow: var(--shadow-glow);
}

.btn-toggle.active {
    background: var(--color-accent-2);
    box-shadow: 0 0 20px rgba(157, 78, 221, 0.5);
}

.btn-like.liked {
    color: var(--color-like);
    animation: heartBeat 0.5s;
}

@keyframes heartBeat {
    0%, 100% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.3);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ============================================
   BARRA DE PROGRESO
   ============================================ */
.progress-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.time-current,
.time-total {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    min-width: 40px;
    text-align: center;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    min-width: 150px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    width: 0%;
    transition: width 0.1s linear;
    position: relative;
}

.progress-handle {
    width: 16px;
    height: 16px;
    background: var(--color-controls);
    border-radius: var(--radius-full);
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    left: 0%;
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-fast);
}

.progress-bar:hover .progress-handle {
    transform: translate(-50%, -50%) scale(1.3);
}

.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-accent-1);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-small);
    margin-top: var(--spacing-sm);
}

.btn-secondary:hover {
    background: var(--color-accent-2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* ============================================
   CARRUSEL
   ============================================ */
.carousel {
    position: relative;
    margin-bottom: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-large);
}

.carousel-container {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-slow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Banner Digital Wave */
.digitalwave-banner {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-controls); /* Amarillo canario #ffbf00 */
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md); /* Rectangular con esquinas redondeadas */
    border: 3px solid #fff; /* Outline blanco en el banner */
    z-index: 2;
    animation: bounce 2s infinite;
    box-shadow: 0 4px 12px rgba(255, 191, 0, 0.4);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

.digitalwave-banner a {
    color: #000; /* Texto negro limpio */
    font-weight: 700;
    text-decoration: none;
    /* Sin text-shadow - letras limpias */
}

/* Info de la canción */
.song-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    padding: var(--spacing-lg);
    text-align: center;
}

.song-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-controls);
}

.song-artist {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

/* Botones del carrusel */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    z-index: 2;
}

.carousel-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: var(--spacing-md);
}

.carousel-next {
    right: var(--spacing-md);
}

/* Dots del carrusel */
.carousel-dots {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 2;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition-fast);
}

.dot.active {
    background: var(--color-controls);
    transform: scale(1.3);
}

.dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    margin-top: auto;
    text-align: center;
    padding: var(--spacing-lg) 0;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer a {
    color: var(--color-controls);
    text-decoration: underline;
    transition: var(--transition-fast);
}

.footer a:hover {
    color: var(--color-controls-hover);
}

.btn-lang {
    background: var(--color-accent-2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.btn-lang:hover {
    transform: scale(1.05);
}

/* ============================================
   MODALES
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
}

.modal.active {
    display: block;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-large);
    animation: modalSlideIn var(--transition-normal);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-accent-1);
    color: #fff;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-accent-2);
    transform: rotate(90deg);
}

.modal-content h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-controls);
    font-size: 1.5rem;
}

/* Modal: Formulario de preguntas */
#formQuestions input,
#formQuestions textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: 2px solid var(--color-genre-off);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    transition: var(--transition-fast);
}

#formQuestions input:focus,
#formQuestions textarea:focus {
    outline: none;
    border-color: var(--color-controls);
    box-shadow: 0 0 0 3px rgba(255, 191, 0, 0.2);
}

.btn-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 700;
    color: #000;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-glow);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow), var(--shadow-medium);
}

/* Modal: Géneros */
.modal-genres {
    min-width: 320px;
    max-width: 500px;
}

.search-box {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

#searchInput {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: 2px solid var(--color-genre-off);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition-fast);
}

#searchInput:focus {
    outline: none;
    border-color: var(--color-controls);
    box-shadow: 0 0 0 3px rgba(255, 191, 0, 0.2);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-xs);
    max-height: 300px;
    overflow-y: auto;
    box-shadow: var(--shadow-large);
    display: none;
    z-index: 10;
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 1px solid var(--color-genre-off);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: var(--color-genre-off);
}

.search-result-title {
    font-weight: 600;
    color: var(--color-controls);
}

.search-result-artist {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.genres-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.genre-btn {
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: 2px solid var(--color-genre-off);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.genre-btn:hover {
    border-color: var(--color-controls);
    transform: translateY(-2px);
}

.genre-btn.active {
    background: var(--color-genre-on);
    border-color: var(--color-genre-on);
    color: #000;
    box-shadow: var(--shadow-glow-green);
}

.genre-number {
    font-size: 0.75rem;
    opacity: 0.7;
}

.genre-name {
    font-weight: 600;
}

.modal-close-bottom {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-accent-1);
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition-fast);
}

.modal-close-bottom:hover {
    background: var(--color-accent-2);
}

/* Modal: Compartir */
.modal-share {
    min-width: 320px;
    max-width: 500px;
}

.share-section {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.share-song {
    background: var(--color-accent-1);
}

.share-player {
    background: var(--color-accent-2);
}

.share-section h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.share-song-info {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
}

.share-song-info strong {
    display: block;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.share-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.share-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: var(--transition-fast);
    text-align: center;
}

.share-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: translateY(-2px);
}

.qr-container {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
}

.qr-container canvas {
    margin-bottom: var(--spacing-md);
}

.btn-download-qr {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: #000;
    color: #fff;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition-fast);
}

.btn-download-qr:hover {
    background: #333;
    transform: scale(1.05);
}

/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */
@media (max-width: 767px) {
    /* Modal ajustado para móviles */
    .modal-content {
        max-height: 70vh !important;
        padding: var(--spacing-md) !important;
        width: 92% !important;
    }
    
    .modal-header {
        position: sticky;
        top: 0;
        background: var(--color-bg-secondary);
        z-index: 10;
        padding-bottom: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
        border-bottom: 1px solid var(--color-genre-off);
    }
    
    .modal-body {
        max-height: calc(70vh - 100px);
        overflow-y: auto;
        padding-bottom: var(--spacing-md);
    }
    
    /* QR Codes más pequeños */
    .qr-container {
        gap: var(--spacing-sm) !important;
        flex-direction: column !important;
    }
    
    .qr-item {
        padding: var(--spacing-md) !important;
    }
    
    .qr-item canvas {
        max-width: 150px !important;
        height: auto !important;
    }
    
    /* Share buttons más compactos */
    .share-buttons {
        gap: var(--spacing-xs) !important;
    }
    
    .share-btn {
        padding: var(--spacing-sm) !important;
        font-size: 0.8rem !important;
    }
    
    /* Botón de cerrar más grande y visible */
    .modal-close {
        width: 36px !important;
        height: 36px !important;
        font-size: 1.5rem !important;
        z-index: 20;
        background: var(--color-accent-1) !important;
        box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    }
    
    /* Botón cerrar inferior (aparece solo al final) */
    .modal-close-bottom {
        padding: var(--spacing-md) var(--spacing-xl) !important;
        font-size: 1rem !important;
        margin-top: var(--spacing-lg) !important;
        background: var(--color-bg-secondary) !important;
        box-shadow: 0 -2px 10px rgba(0,0,0,0.3) !important;
        width: 100%;
        display: block;
    }
}

/* ============================================
   RESPONSIVE - TABLET
   ============================================ */
@media (min-width: 768px) {
    .app-container {
        max-width: 700px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .btn-control {
        width: 64px;
        height: 64px;
    }
    
    .btn-play-pause {
        width: 80px;
        height: 80px;
    }
    
    .genres-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   RESPONSIVE - DESKTOP
   ============================================ */
@media (min-width: 1024px) {
    .app-container {
        max-width: 800px;
    }
    
    .modal-content {
        max-width: 600px;
    }
}

/* ============================================
   RESPONSIVE - LANDSCAPE MOBILE
   ============================================ */
@media (orientation: landscape) and (max-height: 600px) {
    .app-container {
        padding: var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-md) 0;
    }
    
    .title {
        font-size: 1.25rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .carousel-container {
        aspect-ratio: 16 / 9;
    }
    
    .modal-content {
        max-height: 95vh;
    }
}

/* ============================================
   SCROLLBAR PERSONALIZADO
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-controls);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-controls-hover);
}

/* ============================================
   UTILIDADES
   ============================================ */
.hidden {
    display: none !important;
}

.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Animación de carga */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    border: 3px solid var(--color-genre-off);
    border-top-color: var(--color-controls);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}