* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #e0eafc 0%, #cfdef3 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(2px);
    border-radius: 48px;
    padding: 35px 30px;
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1), 0 2px 5px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

header {
    text-align: center;
    margin-bottom: 45px;
}

h1 {
    font-size: 3.2rem;
    background: linear-gradient(120deg, #8ba6b9, #6d8e9f);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.subtitulo {
    font-size: 1.2rem;
    color: #8b9aad;
    font-weight: 500;
}

.subtitulo_bold {
    font-size: 1.2rem;
    color: #8b9aad;
    font-weight: 800;
}

/* ========== PESTAÑAS ========== */
.tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.tab-btn {
    background: #e2e8f0;
    border: none;
    border-radius: 50px;
    padding: 12px 28px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    color: #4a627a;
}

.tab-btn.active {
    background: linear-gradient(135deg, #8ba6b9, #6d8e9f);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.tab-btn:hover:not(.active) {
    background: #d0dbe8;
    transform: translateY(-2px);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeInUp 0.4s ease-out;
}

/* ========== BOTONERA PRINCIPAL ========== */
.botonera {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 18px;
    margin-bottom: 40px;
}

.btn {
    border: none;
    border-radius: 32px;
    padding: 28px 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    color: #4a627a;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.btn:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, #ffffff 0%, #fff 100%);
}

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

/* ========== COLORES PASTEL PARA CADA BOTÓN ========== */
/* Años 40 */
.btn[data-genero="40s-es"] { background: linear-gradient(135deg, #fde2e4, #fff0f0); }
.btn[data-genero="40s-en"] { background: linear-gradient(135deg, #fef3e8, #fffaf5); }

/* Años 50 */
.btn[data-genero="50s-es"] { background: linear-gradient(135deg, #e2f0e8, #f5faf7); }
.btn[data-genero="50s-en"] { background: linear-gradient(135deg, #fff0db, #fff8ef); }

/* Años 60 */
.btn[data-genero="60s-es"] { background: linear-gradient(135deg, #e0f2fe, #f0f9ff); }
.btn[data-genero="60s-en"] { background: linear-gradient(135deg, #fee2e2, #fff5f5); }

/* Años 70 */
.btn[data-genero="70s-es"] { background: linear-gradient(135deg, #fef9e0, #fffcf0); }
.btn[data-genero="70s-en"] { background: linear-gradient(135deg, #e0f0e8, #f0faf5); }

/* Años 80 */
.btn[data-genero="80s-es"] { background: linear-gradient(135deg, #e0e7ff, #f0f3ff); }
.btn[data-genero="80s-en"] { background: linear-gradient(135deg, #ffe6e6, #fff5f5); }

/* Boleros y Clásica */
.btn[data-genero="romantica"] { background: linear-gradient(135deg, #ffe6f0, #fff5f9); }
.btn[data-genero="clasica"] { background: linear-gradient(135deg, #e6f7e6, #f4fbf4); }

.emoji {
    font-size: 2.8rem;
    display: block;
    margin-bottom: 12px;
}

.texto {
    font-size: 1.3rem;
    font-weight: 600;
    display: block;
    color: #5d6f83;
}

.texto small {
    font-size: 0.75rem;
    font-weight: normal;
    display: block;
    margin-top: 6px;
    color: #8fa0b0;
}

/* ========== BUSCADORES DE YOUTUBE ========== */
.buscadores {
    background: #fefefe;
    border-radius: 40px;
    padding: 28px 25px;
    margin-bottom: 35px;
    border: 1px solid rgba(180, 190, 200, 0.2);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.buscadores h3 {
    text-align: center;
    color: #6c829c;
    margin-bottom: 25px;
    font-size: 1.4rem;
    font-weight: 500;
}

.buscador-texto {
    display: flex;
    gap: 12px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

#campo-busqueda {
    flex: 1;
    padding: 16px 24px;
    font-size: 1.1rem;
    border: 1.5px solid #e2e8f0;
    border-radius: 60px;
    outline: none;
    transition: all 0.3s;
    font-family: inherit;
    background: #ffffff;
    color: #4a5568;
}

#campo-busqueda:focus {
    border-color: #a5c0d4;
    box-shadow: 0 0 0 4px rgba(141, 173, 197, 0.2);
}

.btn-buscar {
    background: linear-gradient(135deg, #b5d3e7, #9bc0d4);
    color: #3d5a6c;
    border: none;
    border-radius: 60px;
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
}

.btn-buscar:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, #c2ddee, #aac9df);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
}

.buscador-voz {
    text-align: center;
}

.btn-voz-grande {
    background: linear-gradient(135deg, #f5c6b5, #efb09b);
    color: #5a3e32;
    border: none;
    border-radius: 60px;
    padding: 16px 40px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
    max-width: 280px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
}

.btn-voz-grande:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, #fad7c8, #f5c2ae);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
}

.estado-busqueda {
    text-align: center;
    margin-top: 20px;
    padding: 12px;
    font-size: 1rem;
    color: #7e95ab;
    min-height: 55px;
    font-weight: 500;
}

.escuchando {
    color: #e5987c;
    font-weight: 600;
    animation: pulse 1.4s infinite;
}

.exito {
    color: #7dab7f;
    font-weight: 600;
}

.error {
    color: #d99e8e;
    font-weight: 600;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

/* ========== REPRODUCTOR YOUTUBE ========== */
.reproductor {
    background: #ffffffdd;
    backdrop-filter: blur(4px);
    border-radius: 40px;
    padding: 28px 25px;
    text-align: center;
    border: 1px solid rgba(200, 210, 220, 0.3);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.03);
}

.info-now-playing {
    background: #fafcff;
    border-radius: 32px;
    padding: 22px;
    margin-bottom: 25px;
    min-height: 95px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #eef3fc;
}

#titulo-cancion {
    font-size: 1.25rem;
    color: #5f7a95;
    margin: 0;
    line-height: 1.5;
    font-weight: 500;
}

.btn-control {
    background: #e3eef9;
    color: #658098;
    border: none;
    border-radius: 50px;
    padding: 14px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.btn-control:hover {
    background: #d6e4f0;
    transform: scale(0.98);
}

/* ========== RADIO BROWSER ========== */
.radio-browser-section {
    background: #fefefe;
    border-radius: 40px;
    padding: 25px;
    border: 1px solid rgba(180, 190, 200, 0.2);
}

.radio-browser-section h3 {
    text-align: center;
    color: #6c829c;
    margin: 20px 0 25px 0;
    font-size: 1.4rem;
    font-weight: 500;
}

.botonera-radio {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.btn-radio {
    border: none;
    border-radius: 28px;
    padding: 20px 12px;
    cursor: pointer;
    transition: all 0.3s;
    color: #5d6f83;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.btn-radio:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, #ffffff, #f0f4f8);
}

.btn-radio .emoji {
    font-size: 2.4rem;
    display: block;
    margin-bottom: 10px;
}

.btn-radio .texto {
    font-size: 1.15rem;
    font-weight: 600;
    color: #5d6f83;
}

.btn-radio .texto small {
    font-size: 0.7rem;
    font-weight: normal;
    color: #8fa0b0;
}

/* Colores pastel para botones de Radio Browser */
.btn-radio[data-genero-radio="spanish 40s"] { background: linear-gradient(135deg, #fde2e4, #fff0f0); }
.btn-radio[data-genero-radio="40s swing jazz"] { background: linear-gradient(135deg, #fef3e8, #fffaf5); }
.btn-radio[data-genero-radio="spanish 50s"] { background: linear-gradient(135deg, #e2f0e8, #f5faf7); }
.btn-radio[data-genero-radio="50s rockabilly"] { background: linear-gradient(135deg, #fff0db, #fff8ef); }
.btn-radio[data-genero-radio="spanish 60s"] { background: linear-gradient(135deg, #e0f2fe, #f0f9ff); }
.btn-radio[data-genero-radio="60s rock pop"] { background: linear-gradient(135deg, #fee2e2, #fff5f5); }
.btn-radio[data-genero-radio="spanish 70s"] { background: linear-gradient(135deg, #fef9e0, #fffcf0); }
.btn-radio[data-genero-radio="70s disco funk"] { background: linear-gradient(135deg, #e0f0e8, #f0faf5); }
.btn-radio[data-genero-radio="spanish 80s"] { background: linear-gradient(135deg, #e0e7ff, #f0f3ff); }
.btn-radio[data-genero-radio="80s pop rock"] { background: linear-gradient(135deg, #ffe6e6, #fff5f5); }
.btn-radio[data-genero-radio="romantica"] { background: linear-gradient(135deg, #ffe6f0, #fff5f9); }
.btn-radio[data-genero-radio="classical"] { background: linear-gradient(135deg, #e6f7e6, #f4fbf4); }

.buscadores-radio {
    margin: 25px 0;
}

.buscador-texto-radio {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

#campo-busqueda-radio {
    flex: 1;
    padding: 14px 20px;
    font-size: 1rem;
    border: 1.5px solid #e2e8f0;
    border-radius: 50px;
    outline: none;
    font-family: inherit;
}

#campo-busqueda-radio:focus {
    border-color: #a5c0d4;
    box-shadow: 0 0 0 4px rgba(141, 173, 197, 0.2);
}

.emisora-actual {
    background: #fafcff;
    border-radius: 28px;
    padding: 20px;
    margin: 20px 0;
    text-align: center;
    border: 1px solid #eef3fc;
}

.controles-radio {
    text-align: center;
    margin-top: 20px;
}

/* ========== FOOTER ========== */
footer {
    margin-top: 35px;
    text-align: center;
    color: #a2b6c6;
    font-size: 0.85rem;
    border-top: 1px solid #eaf0f5;
    padding-top: 25px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .container {
        padding: 20px 18px;
        border-radius: 32px;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    .texto {
        font-size: 1.1rem;
    }
    
    .emoji {
        font-size: 2.2rem;
    }
    
    .btn, .btn-radio {
        padding: 18px 10px;
    }
    
    .buscador-texto, .buscador-texto-radio {
        flex-direction: column;
    }
    
    .btn-buscar, .btn-voz-grande {
        width: 100%;
        max-width: 100%;
    }
    
    .buscadores h3, .radio-browser-section h3 {
        font-size: 1.2rem;
    }
    
    .tab-btn {
        padding: 10px 20px;
        font-size: 1rem;
    }
}

/* ========== ANIMACIONES ========== */
.container, .btn, .btn-radio, .buscadores, .reproductor, .radio-browser-section {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Botón de parada global */
.parada-global {
    text-align: center;
    margin-bottom: 25px;
}

.btn-parar-todo {
    background: linear-gradient(135deg, #e53e3e, #c53030);
    color: white;
    border: none;
    border-radius: 60px;
    padding: 15px 35px;
    font-size: 1.3rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 250px;
}

.btn-parar-todo:hover {
    transform: scale(1.02);
    background: linear-gradient(135deg, #f56565, #e53e3e);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.btn-parar-todo:active {
    transform: scale(0.98);
}