:root {
    --primary: #e74c3c; /* Rojo Tomate */
    --secondary: #f39c12; /* Amarillo Queso */
    --bg-dark: #121212;
    --bg-card: #1e1e1e;
    --text-light: #ffffff;
    --text-muted: #aaaaaa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding-bottom: 120px;
}

/* Mejoras globales para dispositivos táctiles (Evita resalta azul nativo al pulsar) */
.tab-btn, .station-card, .control-btn, .fav-btn, .volume-slider {
    -webkit-tap-highlight-color: transparent;
}

header {
    background: linear-gradient(135deg, var(--primary), #c0392b);
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.user-info {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: rgba(0, 0, 0, 0.4); 
    padding: 10px 15px;
    border-radius: 15px;
    border: 1px solid var(--primary); 
    color: var(--text-light);
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 5px;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-container input {
    width: 100%;
    padding: 12px 20px 12px 40px;
    border-radius: 25px;
    border: none;
    font-size: 1rem;
    outline: none;
}

.search-container i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #555;
}

.tabs {
    display: flex;
    justify-content: center;
    margin: 20px 0;
    gap: 15px;
}

.tab-btn {
    background-color: var(--bg-card);
    color: var(--text-light);
    border: 2px solid var(--primary);
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

.tab-btn.active, .tab-btn:hover {
    background-color: var(--primary);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.station-card {
    background-color: var(--bg-card);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    position: relative;
    border-top: 4px solid var(--secondary);
}

.station-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(243, 156, 18, 0.2);
}

.station-icon {
    font-size: 3rem;
    color: var(--secondary);
    margin-bottom: 15px;
}

.station-name {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.fav-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s;
}

.fav-btn.active {
    color: var(--primary);
}

.player-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #000000;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.8);
    transform: translateY(100%);
    transition: transform 0.4s ease-in-out;
    z-index: 1000;
    border-top: 2px solid var(--primary);
}

.player-container.show {
    transform: translateY(0);
}

.player-info {
    display: flex;
    align-items: center;
    gap: 15px;
    width: 30%;
}

.vinyl-record {
    width: 60px;
    height: 60px;
    background: url('https://cdn-icons-png.flaticon.com/512/3425/3425072.png') center/cover;
    border-radius: 50%;
    animation: spin 4s linear infinite;
    animation-play-state: paused;
}

.vinyl-record.playing {
    animation-play-state: running;
}

.player-station-name {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--secondary);
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 15px; 
    width: 40%;
    justify-content: center;
}

.control-btn {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.8rem;
    cursor: pointer;
    transition: color 0.2s, transform 0.2s;
}

.control-btn:hover {
    color: var(--primary);
    transform: scale(1.1);
}

.play-pause-btn {
    font-size: 3rem;
    color: var(--secondary);
}

.play-pause-btn:hover {
    color: var(--primary);
    transform: scale(1.1);
}

.volume-container {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 30%;
    justify-content: flex-end;
}

.volume-slider {
    width: 100px;
    cursor: pointer;
    accent-color: var(--primary);
}

.visualizer {
    display: flex;
    gap: 3px;
    height: 30px;
    align-items: flex-end;
    display: none;
}

.visualizer.active {
    display: flex;
}

.bar {
    width: 5px;
    background-color: var(--primary);
    border-radius: 3px;
    animation: bounce 0.5s infinite alternate;
}

.bar:nth-child(2) { animation-delay: 0.1s; background-color: var(--secondary); }
.bar:nth-child(3) { animation-delay: 0.2s; }
.bar:nth-child(4) { animation-delay: 0.3s; background-color: var(--secondary); }
.bar:nth-child(5) { animation-delay: 0.4s; }

@keyframes spin { 100% { transform: rotate(360deg); } }
@keyframes bounce { 0% { height: 5px; } 100% { height: 30px; } }

.empty-message {
    text-align: center;
    grid-column: 1 / -1;
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-top: 50px;
}

/* Toast Styles */
.toast-container {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    background-color: var(--bg-card);
    color: var(--text-light);
    border: 2px solid var(--primary);
    padding: 15px 25px;
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    font-weight: bold;
    animation: slideIn 0.3s ease-out, fadeOut 0.3s ease-in 2.7s forwards;
    pointer-events: auto;
}

@keyframes slideIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }

/* ESTRUCTURACIÓN COMPLETA PARA DISPOSITIVOS TÁCTILES (MÓVILES Y TABLETS) */
@media (max-width: 768px) {
    .user-info { 
        position: static; 
        margin: 10px auto 15px auto; 
        width: 90%; 
        max-width: 450px;
        flex-direction: row; /* Estructura horizontal limpia en móviles */
        flex-wrap: wrap;
        justify-content: center; 
        gap: 12px; 
        padding: 8px 12px;
    }
    
    .tabs {
        gap: 10px;
        padding: 0 15px;
    }

    .tab-btn {
        padding: 12px 20px; /* Botones más altos y fáciles de presionar */
        font-size: 0.95rem;
        flex: 1;
        max-width: 200px;
        text-align: center;
    }

    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); /* Parrilla de 2 columnas compactas en pantallas chicas */
        gap: 12px;
        padding: 0 12px;
    }
    
    .station-card {
        padding: 15px 10px;
    }
    
    .station-icon {
        font-size: 2.5rem;
        margin-bottom: 8px;
    }

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

    .fav-btn {
        top: 10px;
        right: 10px;
        padding: 8px; /* Área de toque expandida para el corazón */
    }

    /* Rediseño del reproductor para dedos */
    .player-container { 
        flex-direction: column; 
        gap: 12px; 
        padding: 15px; 
    }

    .player-info { 
        width: 100%; 
        justify-content: center; 
        text-align: center; 
    }

    .player-controls { 
        width: 100%; 
        justify-content: space-around; /* Separa los botones para evitar toques erróneos */
        gap: 5px;
    }

    .control-btn {
        padding: 10px 14px; /* Mayor hitbox táctil */
    }

    .volume-container { 
        width: 100%; 
        justify-content: center; 
        margin-top: 5px;
        gap: 15px;
    }

    .volume-slider {
        width: 65%; /* Deslizador más ancho en móviles */
        height: 8px; /* Más grueso para arrastrar fácilmente con el pulgar */
    }

    body { 
        padding-bottom: 190px; /* Ajuste del espacio inferior por el player más alto */
    }
}