/* Header */
.site-header {
    background: linear-gradient(180deg, var(--color-text-dark), var(--color-bg-end));
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 95%;
    width: 95%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 15px;
}

.logo-link {
    text-decoration: none;
    display: flex;
    align-items: center;
    background: var(--color-bg-end);
    transition: transform 0.3s ease;
    border-radius: 15px;
}

.header-logo {
    height: 70px;
    width: auto;
    border-radius: 15px;
    box-shadow: 0 0px 20px var(--color-bg-logo-shadow);
    transition: transform 0.3s ease;
    padding: 5px;
}

.header-logo:hover, .logo-link:hover {
    transform: scale(1.05);
}

/* Controles del header */
.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    transition: transform 0.3s ease;
}

.header-controls label {
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 8px;
}

#fretCount, .metronome-controls input {
    background: linear-gradient(180deg, var(--color-panel-title), var(--color-bg-end));
    border-radius: 15px;
    padding: 6px 8px;
    color: var(--color-text);
    font-size: 0.9em;
    width: 70px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    margin-left: 5px;
    margin-bottom: 5px;
    font-weight: bold;
    border:0;
}
#fretCount:focus, .metronome-controls input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}
#fretCount::-webkit-inner-spin-button,
#fretCount::-webkit-outer-spin-button,
.metronome-controls input::-webkit-inner-spin-button,
.metronome-controls input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
#fretCount{
    width: 100px;
    height: 45px;
    font-size: 3.0em;
    margin-top: 5px;
    padding: 0 2px 5px 0;
}

.header-controls button {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 8px 15px;
    color: var(--color-text);
    font-size: 0.8em;
    font-weight: 600;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.header-controls button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.header-controls button:active {
    transform: translateY(0);
}

/* Estados del header con scroll */
.site-header.header-scrolled {
    padding: 0;
}

.site-header.header-scrolled .header-logo {
    height: 45px;
}

/* Efecto seleccionar color mensaje */
.highlight-color-panel {
    animation: glowPulse 1s infinite alternate;
}

@keyframes glowPulse {
    0% {
        box-shadow: 0 0 8px rgba(255, 255, 0, 0.4),
                    0 0 15px rgba(255, 255, 0, 0.2);
        transform: scale(1);
    }
    100% {
        box-shadow: 0 0 18px rgba(255, 255, 0, 0.8),
                    0 0 30px rgba(255, 255, 0, 0.5);
        transform: scale(1.02);
    }
}

/* Responsive para controles del header */
@media (max-width: 1024px) {
    .header-controls {
        gap: 10px;
    }
    
    .header-controls button {
        padding: 6px 12px;
        font-size: 0.75em;
    }
    
    .header-controls input[type="number"] {
        width: 50px;
        padding: 6px 10px;
    }

    
}

@media (max-width: 768px) {
    .header-content {
        /*flex-direction: column;*/
        gap: 15px;
    }
    
    .header-controls {
        order: 2;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
    
    .language-selector {
        order: 3;
    }
}

/* Botón hamburguesa */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    transition: all 0.3s ease;
}

.hamburger-menu:hover {
    transform: scale(1.1);
}

.hamburger-menu span {
    width: 100%;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Selector de idioma */
.language-selector {
    position: relative;
    display: inline-block;
}

.current-language { 
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-text);
    padding: 10px 15px;
    border-radius: 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.current-language:hover {
    background: var(--color-bg-end);
    transform: translateY(-1px);
}

.flag-icon {
    font-size: 1.2em;
}

.language-name {
    font-weight: 600;
    font-size: 0.9em;
}

.dropdown-arrow {
    font-size: 0.8em;
    transition: transform 0.3s ease;
}

.language-selector:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-accent);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    padding: 10px 0;
    min-width: 145px;
    display: none;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    margin-top: 10px;
    z-index: 1000;
}

.language-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    text-decoration: none;
    color: var(--color-text-white);
    transition: all 0.3s ease;
    border-radius: 10px;
    margin: 0 10px;
    cursor: pointer;
    text-align: center;
}

.language-option:hover {
    background: var(--color-accent);
    transform: translateX(5px);
    font-weight: 600;
}

.language-option.active {
    background: var(--color-bg-start);
    font-weight: 600;
}

.language-option.active:hover {
    background: var(--color-accent);
}

/* Contenido principal */

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

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: linear-gradient(rgba(var(--color-bg-start-rgb),1), rgba(var(--color-bg-end-rgb),0.85)), url("../img/bg-main.webp") no-repeat center center;
    background-size: cover;
}

.container {
    max-width: 95%;
    margin: 0 auto;
    padding: 15px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.panel-colors {
    flex: 1 1 calc(33% - 10px);
    min-width: 250px;
    padding: 0 0 5px 0;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    background: rgba(var(--color-accent-rgb), 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);

}

.panel-colors input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent-secondary);
}

.panel-colors select, #scaleType {
    padding: 10px 12px;
    font-size: 14px;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    background: linear-gradient(180deg, var(--color-panel-title), var(--color-bg-end));
    color: var(--color-text);
    cursor: pointer;
    appearance: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
    margin: 5px 0;
    text-align: center;
}

.panel-colors select:hover, #scaleType:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    background-color:var(--color-text-dark);
}

.panel-colors select:focus, #scaleType:focus {
    outline: none;
    box-shadow: 0 0 6px rgba(255,255,255,0.6), 0 4px 10px rgba(0,0,0,0.2);
}

/* Estilo base */
.mark-notes-toggle-btn {
    position: relative;
    display: inline-block;
    width: 100px;
    height: 45px;
    cursor: pointer;
    user-select: none;
    margin: 5px 0;
    box-shadow: 0 0px 5px var(--color-bg-end);
    border-radius: 15px;
}

.mark-notes-toggle-btn input {
    display: none;
}

/* Fondo */
.mark-notes-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, var(--color-panel-title), var(--color-bg-end));
    border-radius: 15px;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    font-size: 1.8em;
    font-weight: bold;
    color: var(--color-text);
    border:0;
    justify-content: center;
}

/* Posición de texto */
.label-on {
    opacity: 0;
    transition: opacity 0.3s ease;
}
.label-off {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* Activado */
.mark-notes-toggle-btn input:checked + .mark-notes-slider {
    background: var(--color-accent); /* Verde (encendido) */
}
.mark-notes-toggle-btn input:checked + .mark-notes-slider .label-on {
    opacity: 1;
}
.mark-notes-toggle-btn input:checked + .mark-notes-slider .label-off {
    opacity: 0;
}

.panel-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin: 0 0 5px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.15);
    color: var(--color-text);
    letter-spacing: 0.5px;
    position: sticky; /* Siempre arriba dentro del panel */
    top: 0;
    background: var(--color-panel-title); /* Fondo semitransparente para legibilidad */
    padding-top: 5px;
    z-index: 1;
    width: 100%;
    padding-left: 15px;
    border-radius: 15px 15px 0 0;
    text-align: center;
}
@media (max-width: 1400px) {
    .panel-title {
        font-size: 1rem;
    }
}

.tuning-panel{
    align-items:baseline;
}
.color-panel div {
    padding: 5px;
}

/* Responsive: en pantallas chicas se apilan */
@media (max-width: 1024px) {
    .panel-colors {
        flex: 1 1 100%;
        max-width: 100%;
    }
}

button {
    background: linear-gradient(135deg, var(--color-accent-secondary), #357ABD);
    color: var(--color-text);
    border: none;
    padding: 12px 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

button:active {
    transform: translateY(0);
}

#colorPalette {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: 15px;
    flex-wrap: wrap;
    max-width: 70%;
}

@media (max-width: 1333px) {
    #colorPalette {
        max-width: 100%;
    }
}

.color-option {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-bg-logo-shadow);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #000;
    font-weight: bold;
    position: relative;
}

.color-option.selected {
    border-color: var(--color-text);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

.color-option:hover {
    transform: scale(1.15);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
}

canvas {
    display: block;
    margin: 0 auto;
    border-radius: 20px;
    background: #fdfdfd;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 100%;
    height: auto;
    box-sizing: border-box;
}

.chord-selector-section {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    margin: 20px 0;
    text-align: center;
}

.chord-selector-section h4 {
    margin-bottom: 15px;
    font-size: 1.3em;
    color: var(--color-text);
}

.chord-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.chord-controls select {
    padding: 10px 15px;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-text-dark);
    font-size: 14px;
    font-weight: 500;
    min-width: 120px;
}

.chord-controls button {
    padding: 10px 20px;
    font-size: 13px;
}

.selected-chord-display {
    border-radius: 20px;
    padding: 15px;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.15);
    overflow: hidden;
    width: auto;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    background: rgba(var(--color-accent-rgb), 0.4);
    backdrop-filter: blur(10px);
}

.selected-chord-display h4 {
    font-size: 1.4em;
    color: var(--color-text);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    font-weight: bold;
}

/*
@media (max-width: 1460px) {
    .panel-colors select {
        width: 50%;
    }
}

@media (max-width: 470px) {
    .panel-colors select {
        width: 50%!important;
    }
}
@media (max-width: 450px) {
    .panel-colors select {
        width: 45%!important;
    }
}
@media (max-width: 420px) {
    .panel-colors select {
        width: 40%!important;
    }
}
@media (max-width: 390px) {
    .panel-colors select {
        width: 35%!important;
    }
}
@media (max-width: 360px) {
    .panel-colors select {
        width: 30%!important;
    }
}
*/

/* Responsive design para selected-chord-display */
@media (max-width: 1400px) {
    .selected-chord-display {
        padding: 8px;
        border-radius: 12px;
    }
    
    .selected-chord-display h4 {
        font-size: 1em;
    }

    /*.panel-colors select {
        width: 55%;
    }*/

    .eye-btn {
        width: 25px !important;
        height: 25px !important;
        top: -9px !important;
        right: -8px !important;
        font-size: 0.8em !important;
    }
}

@media (max-width: 768px) {
    .eye-btn {
        width: 20px !important;
        height: 20px !important;
        top: -7px !important;
        right: -6px !important;
    }
    .selected-chord-display {
        padding: 6px;
        border-radius: 10px;
    }
    
    .selected-chord-display h4 {
        font-size: 0.9em;
    }
}

@media (max-width: 480px) {
    .selected-chord-display {
        padding: 4px;
        border-radius: 8px;
    }
    
    .selected-chord-display h4 {
        font-size: 0.8em;
    }
}

@media (max-width: 360px) {
    .selected-chord-display {
        padding: 3px;
        border-radius: 6px;
    }
    
    .selected-chord-display h4 {
        font-size: 0.7em;
    }
}

.chord-preview {
    display: flex;
    width: 100%;
    min-height: 140px;
    border-radius: 15px;
    margin: 15px 0;
    align-items: flex-start;
    justify-content: center;
    color: #000;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

/* Forzar responsive design en pantallas pequeñas */
@media (max-width: 1400px) {
    .selected-chord-display .chord-preview {
        min-height: 80px !important;
        margin: 10px 0 !important;
        border-radius: 10px !important;
    }
}

@media (max-width: 768px) {
    .selected-chord-display .chord-preview {
        min-height: 60px !important;
        margin: 8px 0 !important;
        border-radius: 8px !important;
    }
}

@media (max-width: 480px) {
    .selected-chord-display .chord-preview {
        min-height: 45px !important;
        margin: 6px 0 !important;
        border-radius: 6px !important;
    }
}

@media (max-width: 360px) {
    .selected-chord-display .chord-preview {
        min-height: 35px !important;
        margin: 4px 0 !important;
        border-radius: 4px !important;
    }
}

.chord-info {
    font-size: 1.2em;
    color: var(--color-text);
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Responsive design para chord-info */
@media (max-width: 1400px) {
    .chord-info {
        font-size: 1.1em;
    }
}

@media (max-width: 768px) {
    .chord-info {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .chord-info {
        font-size: 0.9em;
    }
}

/* Estilos para la nueva visualización de acordes */
.chords-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
    overflow: visible;
}

/* Responsive design para chords-container */
@media (max-width: 1400px) {
    .selected-chord-display .chords-container {
        padding: 10px !important;
        gap: 8px !important;
    }
}

@media (max-width: 768px) {
    .selected-chord-display .chords-container {
        padding: 8px !important;
        gap: 6px !important;
    }
}

@media (max-width: 480px) {
    .selected-chord-display .chords-container {
        padding: 5px !important;
        gap: 4px !important;
    }
}

@media (max-width: 360px) {
    .selected-chord-display .chords-container {
        padding: 3px !important;
        gap: 3px !important;
    }
}

.chord-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 15px;
    border-radius: 15px;
    font-weight: bold;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    width: 90px;
    height: 90px;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
    cursor: pointer;
}

.chord-item.selected {
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.45), 0 0 0 3px rgba(255, 255, 255, 0.5) inset;
    transform: translateY(-3px) scale(1.05);
    outline: 3px solid rgba(255, 255, 255, 0.35);
}

/* Responsive design para chord-item */
@media (max-width: 1400px) {
    .chord-item {
        width: 80px;
        height: 80px;
        padding: 8px;
        gap: 6px;
    }
}

@media (max-width: 768px) {
    .chord-item {
        width: 60px;
        height: 60px;
        padding: 6px;
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .chord-item {
        width: 55px;
        height: 55px;
        padding: 4px;
        gap: 3px;
    }
}

@media (max-width: 360px) {
    .chord-item {
        width: 45px;
        height: 45px;
        padding: 3px;
        gap: 2px;
    }
}

.chord-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.color-indicator {
    display: none;
}

.chord-name {
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-size: 1.4em;
    text-align: center;
}

/* Responsive design para chord-name */
@media (max-width: 1400px) {
    .chord-name {
        font-size: 1.1em;
    }
}

@media (max-width: 768px) {
    .chord-name {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .chord-name {
        font-size: 0.9em;
    }
}

@media (max-width: 360px) {
    .chord-name {
        font-size: 0.8em;
    }
}

/* Estilos para el scroll horizontal */
.chords-container::-webkit-scrollbar {
    height: 8px;
}

.chords-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.chords-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.chords-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.context-menu {
    position: fixed;
    background: var(--color-text-dark);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 8px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    min-width: 180px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: none;
}

.context-menu-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: background 0.2s ease;
    color: var(--color-text-white);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.context-menu-item:hover {
    background: var(--color-accent-secondary);
}

.context-menu-item:first-child {
    border-radius: 12px 12px 0 0;
}

.context-menu-item:last-child {
    border-radius: 0 0 12px 12px;
}

.context-menu-item i {
    font-size: 16px;
    color: var(--color-accent-secondary);
}

/* Estilos para el menú desplegable de acordes */
.chord-done-btn {
    background: var(--color-bg-end);
    color: var(--color-text);
    border: none;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}
.chord-done-btn:hover {
    background: var(--color-bg-end);
}
.chord-done-container{
    display:none; text-align:center; margin-top: 10px;
}
/* Overlay difuminado */
.chord-dropdown-over-blur {
    position: fixed;
    top: 0; 
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3); /* oscurece un poco */
    backdrop-filter: blur(6px);  /* difuminado */
    z-index: 9998; /* debajo del popup */
    display: none; /* oculto por defecto */
}
.chord-dropdown {
    position: fixed !important;
    border-radius: 12px;
    box-shadow: 0px 0px 80px var(--color-bg-logo-shadow);
    z-index: 9999 !important;
    min-width: 40%;
    max-width: 95%;
    /* Asegurar que el dropdown sea visible */
    visibility: visible !important;
    opacity: 1 !important;
    /* Centrado automático en la ventana */
    left: 50% !important;
    top: 50% !important;
    transform: translate(-50%, -50%) !important;
    border: 1px solid rgba(255, 255, 255, 0.15);
}
@media (max-width: 1100px) {
    .chord-dropdown{
        min-width: 90%;
    }
}
@media (max-width: 1450px) {
    .chord-dropdown{
        min-width: 80%;
    }
    .color-option{
        width: 40px;
        height: 40px;
    }
}

.chord-dropdown::before {
    content: '';
    position: absolute;
    left: var(--arrow-left, 20px);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
}

/* Flecha apuntando hacia arriba (cuando el dropdown está debajo del color) */
.chord-dropdown[style*="--arrow-direction: top"]::before,
.chord-dropdown::before {
    top: -8px;
    border-bottom: 8px solid white;
}

/* Flecha apuntando hacia abajo (cuando el dropdown está arriba del color) */
.chord-dropdown[style*="--arrow-direction: bottom"]::before {
    bottom: -8px;
    border-top: 8px solid white;
}

.chord-dropdown-header {
    background: var(--color-bg-end);
    color: var(--color-text);
    padding: 12px 16px;
    border-radius: 12px 12px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chord-dropdown-header h4 {
    margin: 0;
    font-size: 1.1em;
    font-weight: 600;
}

.close-dropdown {
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 20px;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.close-dropdown:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.chord-dropdown-content {
    padding: 16px;
    
    border-radius: 0 0 12px 12px;

    background: rgba(var(--color-accent-rgb), 0.85);
    backdrop-filter: blur(10px);
}

.chord-category {
    flex: 1;
    min-width: 220px;
    margin-bottom: 5px;
}

.chord-category h5 {
    margin: 0 0 10px 0;
    color: var(--color-text-dark);
    font-size: 0.9em;
    font-weight: 600;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 5px;
    text-align: left;
}

.center-chord-category{
    text-align: center;
}

.chord-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(45px, 1fr));
    gap: 6px;
}

.chord-btn, .chord-btn-type {
    background: linear-gradient(145deg, var(--color-text), #e0e0e0);
    border: 2px solid #ddd;
    border-radius: 6px;
    padding: 8px 4px;
    font-size: 0.85em;
    font-weight: 600;
    color: var(--color-text-dark);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.chord-btn:hover, .chord-btn-type:hover {
    background: linear-gradient(145deg, #e0e0e0, #d0d0d0);
    border-color: var(--color-bg-start);
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
}

.chord-btn:active, .chord-btn-type:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.chord-btn.selected, .chord-btn-type.selected {
    background: linear-gradient(145deg, var(--color-bg-start), var(--color-bg-end));
    color: var(--color-text);
    border-color: var(--color-bg-start);
    transform: scale(1.05);
    border-radius: 6px;
}

@media (max-width: 1400px) {
    .floating-subscribe-button,
    .floating-beta-button {
        font-size: 0.9em;
        border-radius: 50%;
        width: 50px;
        height: 50px;
        padding: 0;
        justify-content: center;
    }
    
    .floating-beta-button {
        right: 75px!important;
    }
    
    .subscribe-text,
    .beta-text {
        display: none;
    }
    
    .subscribe-icon,
    .beta-icon {
        font-size: 1.1em;
    }
}

@media (max-width: 768px) {
   
    .floating-subscribe-button,
    .floating-beta-button {
        font-size: 0.85em;
    }
    
    .floating-beta-button {
        right: 75px !important;
        bottom: 20px !important;
    }
    
    .subscribe-icon,
    .beta-icon {
        font-size: 1em;
    }
      
    .chord-controls {
        flex-direction: column;
    }
    
    .chords-container {
        gap: 10px;
        padding: 15px;
    }
    
    .chord-item {
        width: 55px;
        height: 55px;
        padding: 12px;
    }
}

/* Estilos del Footer */
.site-footer {
    background: linear-gradient(180deg, var(--color-text-dark), var(--color-bg-end));
    color: var(--color-text);
    padding: 20px 0;
    border-top: 3px solid var(--color-bg-start);
}

.footer-content {
    max-width: 95%;
    width: 95%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 40px;
}

.footer-help-section {
    flex: 0 0 75%;
}

.footer-contact-section {
    flex: 0 0 20%;
    min-width: 0;
    overflow: hidden;
}

.footer-help-section h3,
.footer-contact-section h3 {
    margin: 0 0 20px 0;
    font-size: 1.4em;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-bg-start);
    padding-bottom: 10px;
}
.footer-help-section h3 a{
    color: var(--color-accent) !important;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 0.8em;
}

.footer-help-section h3 a:hover{
    color: var(--color-text-dark);
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 10px 0;
}

.help-item {
    background: var(--color-bg-start);
    padding: 20px;
    border-radius: 12px;
    border-left: 3px solid var(--color-bg-start);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.help-item:hover {
    background: var(--color-bg-end);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.help-item h4 {
    margin: 0 0 12px 0;
    color: var(--color-footer-guide-title);
    font-size: 1.1em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.help-item h4:hover{
    color: var(--color-footer-guide-title);
}

.help-item p {
    margin: 0;
    line-height: 1.6;
    color: var(--color-footer-guide-text);
    font-size: 0.95em;
}

.help-item kbd {
    background: var(--color-bg-end);
    border: 1px solid var(--color-bg-start);
    border-radius: 3px;
    padding: 2px 6px;
    font-size: 0.9em;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
    max-width: 100%;
    overflow: hidden;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    max-width: 100%;
    overflow: hidden;
    white-space: nowrap;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-bg-start);
    transform: translateX(5px);
}

.social-icon {
    font-size: 1.2em;
}

.contact-info {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-info p {
    margin: 5px 0;
    color: #bdc3c7;
    font-size: 0.9em;
}

.contact-info a{
    color: var(--color-text) !important;
    text-decoration: none;
    font-weight: 600;
}

/* Responsive para el footer */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 30px;
        padding: 0 15px;
    }
    
    .footer-help-section,
    .footer-contact-section {
        flex: 0 0 100%;
    }
    
    .help-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .help-item {
        padding: 15px;
    }
    
    .help-item h4 {
        font-size: 1em;
    }
    
    .help-item p {
        font-size: 0.9em;
    }
    
    .help-item {
        padding: 15px;
    }
    
    .help-item h4 {
        font-size: 1em;
    }
    
    .help-item p {
        font-size: 0.9em;
    }
    
    .social-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        max-width: 100%;
    }
    
    .social-link {
        padding: 6px 10px;
        font-size: 0.9em;
        max-width: calc(100% - 5px);
        min-width: 120px;
    }
    
    .footer-contact-section {
        min-width: 0;
        max-width: 100%;
    }
    
    .footer-help-section h3,
    .footer-contact-section h3 {
        font-size: 1.2em;
        margin-bottom: 15px;
    }
    
    .site-footer {
        padding: 10px 0;
    }
}

/* Responsive para pantallas muy pequeñas */
@media (max-width: 480px) {
    .footer-content {
        padding: 0 10px;
        gap: 20px;
    }
    
    .help-grid {
        gap: 12px;
    }
    
    .help-item {
        padding: 12px;
    }
    
    .help-item h4 {
        font-size: 0.95em;
    }
    
    .help-item p {
        font-size: 0.85em;
        line-height: 1.5;
    }
    
    .social-links {
        gap: 8px;
        max-width: 100%;
    }
    
    .social-link {
        padding: 5px 8px;
        font-size: 0.85em;
        max-width: calc(100% - 4px);
        min-width: 100px;
    }
    
    .footer-contact-section {
        min-width: 0;
        max-width: 100%;
    }
    
    .footer-help-section h3,
    .footer-contact-section h3 {
        font-size: 1.1em;
        margin-bottom: 12px;
    }
    
    .site-footer {
        padding: 5px 0;
    }
    
    .contact-info p {
        font-size: 0.8em;
    }
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: preloaderFadeIn 0.8s ease-out;
    transition: opacity 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
    color: var(--color-text);
    animation: preloaderFadeIn 1s ease;
}

.preloader-logo {
    margin-bottom: 10px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: logoFloat 3s ease-in-out infinite;
}

.preloader-logo-img {
    width: 240px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.3));
    background: rgba(0, 0, 0, 0.3);
    padding: 10px;
}

.preloader-message {
    font-size: 1.8em;
    font-weight: 600;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    animation: messageGlow 2s ease-in-out infinite alternate;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s ease;
}

.preloader-spinner {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid transparent;
    border-top: 4px solid var(--color-text);
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
}

.spinner-ring:nth-child(1) {
    animation-delay: 0s;
    border-top-color: var(--color-highlight);
}

.spinner-ring:nth-child(2) {
    animation-delay: 0.3s;
    border-top-color: var(--color-green);
    animation-duration: 1.2s;
}

.spinner-ring:nth-child(3) {
    animation-delay: 0.6s;
    border-top-color: var(--color-blue);
    animation-duration: 0.9s;
}

/* Animaciones del preloader */
@keyframes preloaderFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes messageGlow {
    from {
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 255, 255, 0.3);
    }
    to {
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 255, 255, 0.6);
    }
}

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

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid transparent;
    border-top: 4px solid var(--color-text);
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
}

.spinner-ring:nth-child(1) {
    animation-delay: 0s;
    border-top-color: var(--color-highlight);
}

.spinner-ring:nth-child(2) {
    animation-delay: 0.3s;
    border-top-color: var(--color-green);
    animation-duration: 1.2s;
}

.spinner-ring:nth-child(3) {
    animation-delay: 0.6s;
    border-top-color: var(--color-blue);
    animation-duration: 0.9s;
}

/* Animaciones del preloader */
@keyframes preloaderFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes messageGlow {
    from {
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 255, 255, 0.3);
    }
    to {
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 255, 255, 0.6);
    }
}

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

/* ===== RESPONSIVE DESIGN ===== */

/* Media query para pantallas pequeñas (menos de 1280px) */
@media (max-width: 1400px) {

    .container {
        width: 100%;
    }

    /* Mostrar botón hamburguesa */
    .hamburger-menu {
        display: flex;
    }
    
    /* Ocultar controles del header por defecto */
    .header-controls,
    .language-selector {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--color-text-dark) 0%, var(--color-bg-end) 100%);
        flex-direction: column;
        padding: 10px;
        gap: 15px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        border-radius: 0 0 15px 15px;
        z-index: 999;
        opacity: 0;
        transform: translateY(-20px);
        transition: all 0.3s ease;
    }
    
    /* Mostrar controles cuando el menú está activo */
    .header-controls.active,
    .language-selector.active {
        display: flex;
        opacity: 1;
        transform: translateY(0);
    }
    
    /* Ajustar controles para móvil */
    .header-controls {
        align-items: stretch;
    }
    
    .header-controls label {
        justify-content: center;
    }
    
    .header-controls button {
        width: 100%;
        justify-content: center;
        padding: 12px;
        font-size: 0.9em;
    }
    
    /* Ajustar selector de idioma para móvil */
    .language-selector {
        position: relative;
        top: auto;
        right: auto;
        background: transparent;
        box-shadow: none;
        border-radius: 0;
        margin-top: 0;
    }
    
    .language-dropdown {
        position: relative;
        top: auto;
        right: auto;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        margin-top: 10px;
    }
    
    /* Ajustar logo del header */
    .header-logo {
        height: 60px;
    }
    
    /* Ajustar panel de colores para evitar scroll horizontal */
    .panel-colors {
        flex-direction: column;
        max-width: 100%;
        overflow: hidden;
    }
       
    #colorPalette {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .color-option {
        width: 38px;
        height: 38px;
        font-size: 10px;
    }
    
    /* Ajustar canvas para móvil */
    canvas {
        max-width: 100%;
        margin: 0 auto;
        border-radius: 15px;
    }
    
    /* Mejorar la experiencia táctil en móvil */
    canvas {
        touch-action: manipulation;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    /* Ajustar footer para móvil */
    .help-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .help-item {
        padding: 15px;
    }
    
    .help-item h4 {
        font-size: 1em;
    }
    
    .help-item p {
        font-size: 0.9em;
    }

    .site-footer{
        margin-top: 10px;
    }
}

/* Media query para pantallas muy pequeñas (menos de 768px) */
@media (max-width: 767px) {
    /* Mejorar menú contextual en móvil */
    .context-menu {
        min-width: 200px;
        font-size: 0.9em;
    }
    
    .context-menu-item {
        padding: 12px 15px;
    }
    .header-content {
        padding: 5px 10px;
    }
    
    .container {
        max-width: 100%;
        width: 100%;
    }   
   
    #colorPalette {
        gap: 8px;
    }
    
    .color-option {
        width: 30px;
        height: 30px;
        font-size: 9px;
    }
    
    .chord-dropdown {
        max-width: 95%;
        left: 2.5%;
        max-height: 80vh;
        overflow-y: auto;
    }
    
    .chord-dropdown-header {
        position: sticky;
        top: 0;
        z-index: 10;
    }
    
    .chord-dropdown-content {
        padding: 15px;
    }
    
    .chord-buttons {
        gap: 8px;
    }
    
    .chord-btn {
        padding: 8px 12px;
        font-size: 0.9em;
    }
}

/* Media query para pantallas extra pequeñas (menos de 480px) */
@media (max-width: 479px) {   
    .header-logo {
        height: 50px;
    }
       
    #colorPalette {
        gap: 6px;
    }
    
    .color-option {
        width: 28px;
        height: 28px;
        font-size: 8px;
    }
    
    .chord-dropdown {
        max-width: 100%;
        left: 0;
        right: 0;
        margin: 0 10px;
    }

    #metronome-minimized{
        bottom: 15px!important;
    }
}

/* ===== MENSAJE DE SELECCIÓN DE COLOR ===== */
/* Usa el mismo sistema de posicionamiento que el dropdown de acordes */

.color-selection-message {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: 10000;
    background: var(--color-bg-end);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 3px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    text-align: center;
    color: var(--color-text);
    max-width: 400px;
    width: 90%;
    transition: all 0.3s ease;
    /* Asegurar que el mensaje sea visible y centrado */
    visibility: visible !important;
    opacity: 1 !important;
}

.message-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.message-icon {
    font-size: 3em;
    animation: bounce 2s infinite;
}

.message-content h3 {
    margin: 0;
    font-size: 1.5em;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.message-content p {
    margin: 0;
    font-size: 1.1em;
    line-height: 1.5;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}


/* Animaciones del mensaje */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Responsive para el mensaje */
@media (max-width: 768px) {
    .color-selection-message {
        padding: 25px;
        max-width: 350px;
    }
    
    .message-content h3 {
        font-size: 1.3em;
    }
    
    .message-content p {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .color-selection-message {
        padding: 20px;
        max-width: 300px;
    }
    
    .message-content h3 {
        font-size: 1.2em;
    }
    
    .message-content p {
        font-size: 0.9em;
    }
    
    .message-icon {
        font-size: 2.5em;
    }
}

/* =====================================================
   SISTEMA DE SUSCRIPCIONES
   ===================================================== */

/* Botón flotante de suscripción */
.floating-subscribe-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    color: var(--color-text);
    padding: 15px 20px;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95em;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.floating-subscribe-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(var(--color-accent-rgb), 0.6);
    background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
}

.floating-subscribe-button:active {
    transform: translateY(-1px) scale(1.02);
}

.subscribe-icon {
    font-size: 1.2em;
    animation: pulse 2s infinite;
}

.subscribe-text {
    white-space: nowrap;
}

/* Botón flotante de Beta Version */
.floating-beta-button {
    position: fixed;
    bottom: 20px;
    right: 175px;
    background: linear-gradient(180deg, #ff6b6b 0%, #ee5a24 100%);
    color: var(--color-text);
    padding: 15px 20px;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95em;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.floating-beta-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(255, 107, 107, 0.6);
    background: linear-gradient(180deg, #ff5252 0%, #e64a19 100%);
}

.floating-beta-button:active {
    transform: translateY(-1px) scale(1.02);
}

.beta-icon {
    font-size: 1.2em;
    animation: pulse 2s infinite;
}

.beta-text {
    white-space: nowrap;
}

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

/* Modal de suscripción */
.subscription-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.subscription-modal.active {
    display: block;
    opacity: 1;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: white;
    border-radius: 20px;
    padding: 0;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.subscription-modal.active .modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    color: var(--color-text);
    padding: 25px 30px 20px;
    text-align: center;
    position: relative;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.3em;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 25px;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 2em;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    line-height: 1;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.modal-body {
    padding: 30px;
}

.subscribe-description {
    text-align: center;
    font-size: 1.1em;
    line-height: 1.6;
    color: #555;
    margin-bottom: 25px;
}

.subscribe-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group input[type="email"] {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #000;
    border-radius: 12px;
    font-size: 1em;
    transition: all 0.3s ease;
    box-sizing: border-box;
    background: #f8f9fa;
    color: #000;
}

.form-group input[type="email"]:focus {
    outline: none;
    border-color: var(--color-bg-start);
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input[type="email"]:invalid {
    border-color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 0.9em;
    margin-top: 8px;
    min-height: 20px;
    display: none;
}

.error-message.show {
    display: block;
}

.subscribe-submit {
    background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    color: var(--color-text);
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.subscribe-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.subscribe-submit:active:not(:disabled) {
    transform: translateY(0);
}

.subscribe-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.button-text, .loading-spinner {
    transition: opacity 0.3s ease;
}

.subscribe-submit.loading .button-text {
    opacity: 0;
}

.subscribe-submit.loading .loading-spinner {
    opacity: 1;
    display: inline-block !important;
}

.subscribe-result {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    display: none;
    min-height: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(-10px);
}

.subscribe-result.success {
    background: #d4edda !important;
    color: #155724 !important;
    border: 1px solid #c3e6cb !important;
    display: block !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.subscribe-result.error {
    background: #f8d7da !important;
    color: #721c24 !important;
    border: 1px solid #f5c6cb !important;
    display: block !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Estilo adicional para asegurar visibilidad */
.subscribe-result[style*="display: block"] {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Responsive para el modal */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-width: 400px;
    }
    
    .modal-header {
        padding: 20px 25px 15px;
    }
    
    .modal-header h2 {
        font-size: 1.6em;
    }
    
    .modal-body {
        padding: 25px;
    }
    
    .subscribe-description {
        font-size: 1em;
    }
    
    .floating-subscribe-button {
        bottom: 20px;
        right: 20px;
        padding: 12px 16px;
        font-size: 0.9em;
    }
    
    .floating-beta-button {
        bottom: 80px;
        right: 20px;
        padding: 12px 16px;
        font-size: 0.9em;
    }
    
    .subscribe-text,
    .beta-text {
        font-size: 0.9em;
    }
}

@media (max-width: 480px) {
    .modal-content {
        width: 98%;
        max-width: 350px;
    }
    
    .modal-header {
        padding: 18px 20px 12px;
    }
    
    .modal-header h2 {
        font-size: 1.4em;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .subscribe-description {
        font-size: 0.95em;
    }
    
    .form-group input[type="email"] {
        padding: 12px 16px;
        font-size: 0.95em;
    }
    
    .subscribe-submit {
        padding: 12px 25px;
        font-size: 1em;
    }
    
    .floating-subscribe-button {
        bottom: 15px;
        right: 15px;
        font-size: 0.8em;
    }
    
    .floating-beta-button {
        bottom: 15px !important;
        right: 70px;
        font-size: 0.8em;
    }
    
    .subscribe-icon,
    .beta-icon {
        font-size: 1em;
    }
}

@media (max-width: 360px) {
    .floating-subscribe-button {
        bottom: 10px;
        right: 10px;
        width: 45px;
        height: 45px;
        font-size: 0.75em;
    }
    
    .floating-beta-button {
        bottom: 10px!important;
        right: 60px;
        width: 45px;
        height: 45px;
        font-size: 0.75em;
    }
    
    .subscribe-icon,
    .beta-icon {
        font-size: 0.9em;
    }

    #metronome-minimized {
        width: 45px!important;
        height: 45px!important;
        bottom: 10px!important;
    }
    #metronome-mini-circle{
        width: 30px!important;
        height: 30px!important;
    }
}

/* Modal de bienvenida */
.welcome-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10001;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.welcome-modal.active {
    display: block;
    opacity: 1;
}

.welcome-modal .modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.welcome-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: white;
    border-radius: 20px;
    padding: 0;
    max-width: 600px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
    overflow: hidden;
    cursor: pointer;
}

.welcome-modal.active .welcome-content {
    transform: translate(-50%, -50%) scale(1);
}

.welcome-header {
    background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    color: var(--color-text);
    text-align: center;
    padding: 25px 30px;
    border-radius: 20px 20px 0 0;
}

.welcome-header h2 {
    margin: 0;
    font-size: 1.8em;
    font-weight: 700;
    line-height: 1.3;
}

.welcome-body {
    padding: 30px;
    text-align: center;
}

.welcome-message {
    margin-bottom: 30px;
}

.welcome-message p {
    margin: 0 0 20px 0;
    font-size: 1.1em;
    line-height: 1.6;
    color: var(--color-text-dark);
    text-align: left;
}

.welcome-message p:last-child {
    margin-bottom: 0;
}

.load-scale-btn, .welcome-button {
    background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    color: var(--color-text);
    border: none;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    /* Asegurar que el botón mantenga su cursor pointer */
    position: relative;
    z-index: 1;
}

.load-scale-btn:hover, .welcome-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.6);
    background: linear-gradient(180deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
}

.load-scale-btn:active, .welcome-button:active {
    transform: translateY(0);
}

.load-scale-btn {
    font-size: 1em;
    padding: 10px 20px;
    margin-top: 5px;
}

.welcome-hint {
    margin-top: 15px;
    text-align: center;
    opacity: 0.7;
}

.welcome-hint small {
    color: #666;
    font-size: 0.9em;
    font-style: italic;
}

/* Responsive para el modal de bienvenida */
@media (max-width: 768px) {
    .welcome-content {
        width: 95%;
        margin: 20px;
    }
    
    .welcome-header {
        padding: 20px 25px;
    }
    
    .welcome-header h2 {
        font-size: 1.5em;
    }
    
    .welcome-body {
        padding: 25px;
    }
    
    .welcome-message p {
        font-size: 1em;
    }
    
    .welcome-button {
        padding: 12px 30px;
        font-size: 1em;
    }
    
    .welcome-hint {
        margin-top: 12px;
    }
    
    .welcome-hint small {
        font-size: 0.85em;
    }
}

@media (max-width: 480px) {
    .welcome-content {
        width: 98%;
        margin: 10px;
    }
    
    .welcome-header {
        padding: 15px 20px;
    }
    
    .welcome-header h2 {
        font-size: 1.3em;
    }
    
    .welcome-body {
        padding: 20px;
    }
    
    .welcome-message p {
        font-size: 0.95em;
    }
    
    .welcome-button {
        padding: 10px 25px;
        font-size: 0.95em;
    }
    
    .welcome-hint {
        margin-top: 10px;
    }
    
    .welcome-hint small {
        font-size: 0.8em;
    }
}

.chord-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

/* Botones de nota raíz */
.chord-buttons.notes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(45px, 1fr));
    gap: 6px;
}

.chord-btn {
    padding: 8px;
    font-size: 14px;
    font-weight: bold;
    border-radius: 6px;
    border: 1px solid #ccc;
    cursor: pointer;
    transition: 0.2s;
}
.chord-btn.selected {
    color: var(--color-text);
    border: 2px solid #535C9D;
}

/* Botones de tipo de acorde (texto largo, multilínea) */
/* Contenedor de botones como tags */
.chord-buttons.types {
    display: flex;
    flex-wrap: wrap;       /* 🔹 Permite que salten de línea */
    gap: 8px;              /* 🔹 Espacio entre botones */
    justify-content: center;
}

.chord-btn-type {
    padding: 6px 0;
    font-size: 13px;
    background: #f1f1f1;
    border: 1px solid #ccc;
    cursor: pointer;
    transition: 0.2s;
    white-space: nowrap;
    min-width: 125px;        /* 🔹 Mínimo ancho para uniformidad */
    text-align: center;
    flex: 0 1 auto;         /* 🔹 Que crezcan pero no se superpongan */
    box-sizing: border-box; /* Evita que padding sume más de lo esperado */
}
@media (max-width: 577px) {
    .chord-btn-type{
        min-width: 120px;
    }
}
@media (max-width: 1439px) {
    .chord-btn-type{
        font-size: 13px;
        min-width: 115px;
    }
}
@media (max-width: 1677px) {
    .chord-btn-type{
        font-size: 12px;
        min-width: 106px;
    }
}

.chord-btn-type.selected {
    color: var(--color-text);
    border: 2px solid #535C9D;
}

#scaleType{width:90%;}

.chord-btn-type:disabled,
#scaleType:disabled,
#loadScaleBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Metronome */
#metronome-widget {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: var(--color-bg-end);
    color: var(--color-text);
    border-radius: 12px;
    box-shadow: 0 0px 40px rgba(0,0,0,1);
    border: 3px solid var(--color-footer-guide-title);
    padding-bottom: 3px;
    z-index: 1000;
    width: 240px;
}
.metronome-header {
    text-align: center;
    font-weight: bold;
    margin-bottom: 10px;
    background: var(--color-panel-title);
    padding: 5px;
    border-radius: 5px 5px 0 0;
    position: relative;
}

.metronome-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    justify-content: center;
    align-items: center;
    padding:0 8px;
}
.metronome-controls label {
    font-size: 0.8em;
}
#startStop {
  background: var(--color-accent-secondary);
  color: var(--color-text);
  border: none;
  padding: 7px 12px;
  border-radius: 6px;
  cursor: pointer;
}
#startStop:hover {
    background: var(--color-accent);
}
#beatCircle {
    margin: 5px auto;
    width: 40px;
    height: 40px;
    background: var(--color-blue);
    border-radius: 50%;
    transition: transform 0.1s, background 0.1s;
}
.metronome-controls-left,
.metronome-controls-right,
.metronome-controls-center {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.metronome-controls-center {
    top: -4px;
    position: relative;
    margin-left: 5px;
}

/* Minimizado */
#metronome-minimized {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 55px;
    height: 55px;
    background: var(--color-bg-end);
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0,0,0,0.9);
    align-items: center;
    justify-content: center;
    font-size: 22px;
    cursor: pointer;
    z-index: 1000;
    border: 2px solid var(--color-text);
}

  
  /* botón cerrar (arriba a la derecha) */
  #metronome-close {
    position: absolute;
    right: 6px;
    background: transparent;
    border: 0;
    color: var(--color-text);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    z-index: 2;
    pointer-events: auto;
  }

  #metronome-mini-circle {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--color-accent-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.1s ease, background 0.2s ease;
  }
  
  #mini-icon {
    font-size: 26px;
  pointer-events: none;
  margin-bottom: 5px;
  }

/* Theme selector */
/* Igual que language-selector, adaptado a themes */
.theme-selector {
    position: relative;
    display: inline-block;
    text-align: center;
    margin: 0 auto;
}

.current-theme {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-text);
    padding: 10px 15px;
    border-radius: 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    font-weight: 600;
    font-size: 0.9em;
}

.current-theme:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.theme-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-accent);
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--color-bg-end);
    padding: 10px 0;
    min-width: 125px;
    display: none;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    margin-top: 10px;
    z-index: 1000;
}

.theme-option {
    padding: 12px 0;
    text-decoration: none;
    color: var(--color-text-white);
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 10px;
    margin: 0 10px;
    text-align: center;
}

.theme-option:hover {
    background: var(--color-accent)!important;
    transform: translateX(5px);
    color: var(--color-text-white);
    font-weight: 600;
}

.theme-option.active {
    background: var(--color-bg-start);
    color: var(--color-text-white);
    font-weight: 600;
}

.theme-selector.open .theme-dropdown {
    display: block;
    transform: translateY(0);
}

.more-options-config-panel{
    display: flex; align-items: center;
}
.notation-selector{
    padding-left: 0px!important;
    font-weight: 700 !important;
}
#notationSelect{
    height: 45px;
    text-align: center;
}
@media (max-width: 480px){
    #notationSelect{
        margin-left: 0px;
    }
}

/* Ojo arriba del acorde seleccionado */
/* Contenedor del acorde */
.chord-item {
    position: relative; /* Necesario para que el ojo se posicione dentro */
    border-radius: 12px;
    padding: 8px 12px;
    margin: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  
  .chord-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  }
  
  /* Nombre del acorde */
  .chord-name {
    font-size: 2.5em;
  }
  
  /* Indicador de color */
  .color-indicator {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid #fff;
  }
  
  /* Botón ojo (badge flotante arriba a la derecha) */
  .eye-btn {
    position: absolute;
    width: 35px;
    height: 35px;
    top: -15px;
    right: -13px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.8);
    background: rgba(0,0,0,1)!important;
    padding: 6px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    opacity: 0.85;
    transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
  }
  
  .eye-btn:hover {
    transform: scale(1.1);
    opacity: 1;
    background: rgba(0,0,0,0.65);
  }
  
  /* Contenedor */
  #fret-focus {
    display: flex;
    flex-direction: column; /* label arriba, sliders abajo */
    gap: 10px;
    margin: 0 auto;
    width: 100%;
    padding: 0 0 12px 0;
    border-radius: 12px;
    color: var(--color-text);
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    background: rgba(var(--color-accent-rgb), 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
  }

  @media (max-width: 399px) {
    #fret-focus {
      display: none;
    }
  }
  
  #fret-focus label {
    text-align: center;
    font-weight: bold;
    font-size: 1rem;
    letter-spacing: 0.5px;
  }
  
  /* fila para sliders */
  #fret-focus .sliders {
    display: flex;
    gap: 12px;
    width: 100%;
    padding: 0 20px 8px 20px;
  }
  
  /* sliders lado a lado */
  #fret-focus input[type="range"] {
    flex: 1;              /* cada uno ocupa 50% */
    height: 10px;
    border-radius: 5px;
    appearance: none;
    outline: none;
    accent-color: var(--color-bg-end);
    border: 2px solid var(--color-accent);
  }
  
  /* Slider derecho */
#maxFret {
    background: linear-gradient(
      to right,
      white 0%,
      white calc(var(--val) * 1%),
      var(--color-bg-start) calc(var(--val) * 1%),
      var(--color-bg-start) 100%
    );
  }
  
  /* Slider izquierdo */
  #minFret {
    background: linear-gradient(
      to right,
      var(--color-bg-start) 0%,
      var(--color-bg-start) calc(var(--val) * 1%),
      white calc(var(--val) * 1%),
      white 100%
    );
  }
  
  /* Pulgar (Chrome/Safari/Edge) */
#fret-focus input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-bg-end); /* 🎨 tu violeta principal */
    border: 2px solid #fff;          /* contraste */
    box-shadow: 0 0 4px rgba(0,0,0,0.3);
    cursor: pointer;
    transition: transform 0.15s ease;
  }
  #fret-focus input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
  }
  
  /* Pulgar (Firefox) */
  #fret-focus input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-bg-end);
    border: 2px solid #fff;
    box-shadow: 0 0 4px rgba(0,0,0,0.3);
    cursor: pointer;
    transition: transform 0.15s ease;
  }
  #fret-focus input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
  }

/* Login - Register */
/* Botón del header */
.btn-accent {
    padding: 10px 15px!important;
    font-size: 0.9em!important
}

/* === LOGIN & REGISTER POPUP MEJORADO === */

/* --- POPUP FULLSCREEN --- */
.auth-popup {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(
      135deg,
      var(--color-bg-start),
      var(--color-bg-end)
    );
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.4s ease;
  }
  .auth-popup::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(var(--color-bg-start-rgb),0.7), rgba(var(--color-bg-end-rgb),0.7)), /* capa de transparencia */
        url("../img/register-background.webp") no-repeat center center;
    background-size: cover;
    transform: scale(1.1);
    z-index: -1;
}
@media (max-width: 820px) {
    .auth-popup::before{
        background-position: center left;
    }
}

  .auth-popup.hidden {
    opacity: 0;
    pointer-events: none;
  }
  
  /* Animación más llamativa */
  .auth-popup-content {
    background: rgba(var(--color-bg-end-rgb), 0.5);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    color: var(--color-text);
    position: relative;
    box-shadow: 0 0 25px var(--color-bg-logo-shadow);
  }
  
  .auth-close {
    position: absolute;
    top: 15px; right: 15px;
    background: none;
    border: none;
    font-size: 28px;
    color: var(--color-text);
    cursor: pointer;
  }
  
  .auth-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
  }
  
  .auth-tab {
    flex: 1;
    padding: 10px;
    background: transparent;
    border: 1px solid rgba(var(--color-text-rgb), 0.3);
    color: rgba(var(--color-text-rgb), 0.7);
    cursor: pointer;
    border-radius: 8px;
    margin: 0 5px;
    transition: 0.3s;
  }
  
  .auth-tab.active {
    background: var(--color-accent);
    color: var(--color-text);
    border-color: var(--color-accent);
  }
  
  .auth-form {
    display: none;
    flex-direction: column;
  }
  
  .auth-form.active {
    display: flex;
  }
  
  .auth-form h2 {
    margin-bottom: 15px;
    font-size: 20px;
    color: var(--color-text);
  }
  
  .auth-form input {
    background: rgba(var(--color-text-rgb), 0.15);
    border: none;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: 8px;
    color: var(--color-text);
  }
  
  .auth-form input::placeholder {
    color: rgba(var(--color-text-rgb), 0.7);
  }
  
  .btn-accent {
    background: var(--color-footer-guide-title)!important;
    border: none;
    padding: 12px;
    border-radius: 8px;
    color: var(--color-text);
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
  }
  
  .btn-accent:hover {
    background: var(--color-accent-secondary);
  }
  
  .btn-google {
    background: var(--color-text);
    color: var(--color-text-dark);
    padding: 12px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: bold;
    margin-top: 15px;
    width: 100%;
  }
  
  .auth-divider {
    margin: 20px 0;
    color: rgba(var(--color-text-rgb), 0.6);
  }
  
  .auth-alt {
    margin-top: 10px;
    font-size: 14px;
    color: rgba(var(--color-text-rgb), 0.8);
  }
  
  .auth-alt a {
    color: var(--color-highlight);
    font-weight: bold;
  }

  input.input-locked {
    background: rgba(255,255,255,0.2);
    filter: blur(1px);
    cursor: not-allowed;
  }
  input.input-error {
    border: 2px solid #e74c3c;     /* rojo */
    animation: shake 0.2s 2;       /* vibración rápida */
  }
    @keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
  }

  /* --- RESPONSIVE --- */

/* Tablets medianas */
@media (max-width: 768px) {
    .auth-popup-content {
      max-width: 90%;
      padding: 30px 20px;
    }
  
    .auth-form h2 {
      font-size: 18px;
    }
  
    .auth-logo h1 {
      font-size: 20px;
    }
  
    .auth-tab {
      padding: 8px;
      font-size: 14px;
    }
    .chord-name {
        font-size: 2em;
    }
  }
  
  /* Celulares */
  @media (max-width: 480px) {
    .auth-popup {
        align-items: center;
        padding-top: 0;
    }
  
    .auth-popup-content {
      width: 95%;
      max-width: none;
      padding: 20px 15px;
      border-radius: 12px;
    }
  
    .auth-close {
      font-size: 24px;
      top: 10px;
      right: 10px;
    }
  
    .auth-logo h1 {
      font-size: 18px;
    }
  
    .auth-form input {
      padding: 10px;
      font-size: 14px;
    }
  
    .btn-accent, .btn-google {
      padding: 10px;
      font-size: 14px;
    }
  
    .auth-alt {
      font-size: 12px;
    }
  }
  
  .auth-logo img{
    width: 120px;
    margin-bottom: 15px;
  }

  .auth-error {
    color: var(--color-error-text);
    font-size: 0.9em;
    margin-top: 8px;
    text-align: center;
  }
  
  .auth-success {
    color: var(--color-green);
    font-size: 0.9em;
    margin-top: 8px;
    text-align: center;
  }
  
  .btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
  }
  
  .btn-loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    margin: -9px 0 0 -9px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
  }
  
  @keyframes spin {
    to { transform: rotate(360deg); }
  }

  /* nickname login */
  /* User badge principal */
.header-controls .user-menu, .btn-accent {
    position: relative;
    display: inline-block;
    font-family: inherit;
    text-align: center;
    box-shadow: 0 0 20px rgba(var(--color-bg-end-rgb),0.6);
    border-radius: 22px;
    border:4px solid rgba(var(--color-bg-end-rgb),0.8);
}
@media (max-width: 1400px) {
    .header-controls .user-menu.active .dropdown{right: unset;max-width: max-content;}
    .header-controls .user-menu .dropdown{position:relative!important;margin:3px auto 0 auto;}
}

/* Span con el nombre del usuario */
.header-controls .user-menu span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 15px;
    font-size: 0.95em;
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-footer-guide-title);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.25s ease;
    user-select: none;
    width: 100%;
        justify-content: center;
}

.header-controls .user-menu span:hover {
    content: "▾";
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

/* Flecha para indicar que hay menú */
.header-controls .user-menu span::after {
    content: "▾";
    margin-left: 6px;
    font-size: 0.7em;
    transition: transform 0.25s ease;
}

/* Menú desplegable */
.header-controls .user-menu .dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 5px);
    background: rgba(var(--color-accent-rgb),0.95);
    color: #333;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
    min-width: 120px;
    overflow: hidden;
    z-index: 100;
    flex-direction: column;
}

/* Mostrar menú al activar la clase 'active' */
.header-controls .user-menu.active .dropdown {
    display: flex;
}

/* Opciones del menú */
.header-controls .user-menu .dropdown button {
    background: none;
    border: none;
    width: 100%;
    font-size: 0.9em;
    cursor: pointer;
    transition: background 0.2s ease;
}

.header-controls .user-menu .dropdown button:hover {
    background: rgba(0,0,0,0.05);
}

/* Responsive */
@media (max-width: 600px) {
    .header-controls .user-menu span {
        font-size: 1.1em;
        padding: 6px 10px;
        gap: 4px;
    }

    .header-controls .user-menu .dropdown {
        min-width: 120px;
    }
}

/* opciones generales */
/* Contenedor de opciones */
.options-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    justify-content: center;
  }
  .options-grid-color-panel{
    width: 100%;
    height: 100%;
    display: grid;
    gap: 6px;
    width: 95%;
    justify-content: center;         /* Centrado vertical */
    align-items: center;             /* Centrado horizontal */
    text-align: center;              /* Texto centrado */
  }
  
  /* Caja de opción */
  .option-box {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    flex-direction: column;          /* Apila icono/label y control */
    justify-content: center;         /* Centrado vertical */
    align-items: center;             /* Centrado horizontal */
    text-align: center;              /* Texto centrado */
    padding: 7px;
    box-shadow: 0 0px 5px var(--color-bg-end);
  }
  .options-grid select, .options-grid input{
    box-shadow: 0 0px 5px var(--color-bg-end);
  }
   
  /* Caja de Tuning ocupa toda la fila */
  .option-box.tuning-box {
    grid-column: span 3;
  }
  
  /* Títulos dentro de cada casilla */
  .option-box h5 {
    margin-bottom: 8px;
    font-size: 0.95em;
    font-weight: 600;
    color: #fff;
  }
  
  /* Responsive: tablet → 2 arriba + tuning abajo */
  
  
  /* Responsive: móvil → todo en 1 columna */
  @media (max-width: 530px) {
    .option-box.tuning-box {
      grid-column: span 1;
    }
    .options-grid {
        grid-template-columns: repeat(2, 1fr);
        font-size: 0.85em;
        width: 95%;
      }
      #tuningSelect{max-width: 100px;height: 35px;}
      #fretCount{height: 35px;font-size: 2em;}
      #notationSelect{height: 35px;}
      .mark-notes-toggle-btn{height: 35px;}
  }
  
  .tuning-panel {
    display: flex;
    flex-direction: column;
    align-items: center;     /* centra horizontal */
    justify-content: center; /* centra vertical (si el contenedor padre tiene altura) */
    text-align: center;
    margin: 0 auto;          /* centra en el eje horizontal */
  }