/* Iconos vectoriales SVG */
.svg-icon {
    width: 1.1em;
    height: 1.1em;
    flex-shrink: 0;
    vertical-align: middle;
}

@keyframes svg-spin {
    to {
        transform: rotate(360deg);
    }
}

/* Mostrar el icono SVG correspondiente según el estado aria-pressed */
.toggle-btn[aria-pressed="false"] .icon-when-on {
    display: none;
}

.toggle-btn[aria-pressed="true"] .icon-when-off {
    display: none;
}

/* Contenedor del botón de descarga */
.download-btn-container {
    display: flex;
    justify-content: center;
    margin-top: 1.1rem;
}

#capture-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Comfortaa', cursive;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.5em 1.4em;
    border-radius: 1em;
    border: 1px solid #ffe600;
    background: #000;
    color: #ffe600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border 0.2s;
}

#capture-btn:hover {
    background: #ffe600;
    color: #000;
    border-color: #ffe600;
}

body {
    background: #000;
    min-height: 100vh;
    margin: 0;
    padding: 0.85rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: 'Comfortaa', cursive;
    box-sizing: border-box;
}

#audio-warning {
    display: none;
    align-items: center;
    gap: 0.6rem;
    color: #fff;
    background: #c00;
    padding: 0.8em 1.6em;
    border-radius: 1em;
    position: fixed;
    top: 1em;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    font-family: 'Comfortaa', cursive;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.3s;
    text-align: center;
    box-shadow: 0 4px 16px rgba(255, 0, 0, 0.4);
}

#audio-warning:hover {
    background: #e00;
}

#audio-warning.is-visible {
    display: inline-flex;
}

/* Panel superior unificado de controles */
.controls-panel {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.65rem 1rem;
    max-width: 1180px;
    width: 100%;
    margin-bottom: 1.1rem;
    padding: 0.7rem 1rem;
    border: 1px solid rgba(255, 230, 0, 0.35);
    border-radius: 1.1rem;
    background: rgba(255, 230, 0, 0.03);
    box-sizing: border-box;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Comfortaa', cursive;
}

.control-group label {
    color: #ffe600;
    font-weight: 700;
    font-size: 0.9rem;
    white-space: nowrap;
}

#key-select,
#instrument-select {
    font-family: 'Comfortaa', cursive;
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.4em 0.95em;
    border-radius: 1em;
    border: 1px solid #ffe600;
    background: #000;
    color: #ffe600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border 0.2s;
    outline: none;
}

#key-select:hover,
#key-select:focus,
#instrument-select:hover,
#instrument-select:focus {
    background: #ffe600;
    color: #000;
    border-color: #ffe600;
}

#key-select option,
#instrument-select option {
    background: #000;
    color: #ffe600;
}

/* Indicador de estado de carga de instrumento */
.status-badge {
    display: none;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    color: #00eaff;
    min-width: 0;
    white-space: nowrap;
}

.status-badge .icon-spinner,
.status-badge .icon-alert {
    display: none;
}

.status-badge.is-loading {
    display: inline-flex;
}

.status-badge.is-loading .icon-spinner {
    display: inline-block;
    animation: svg-spin 0.9s linear infinite;
}

.status-badge.is-error {
    display: inline-flex;
    color: #ff4444;
}

.status-badge.is-error .icon-alert {
    display: inline-block;
}

/* Botones de interruptor */
.toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: 'Comfortaa', cursive;
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.4em 1em;
    border-radius: 1em;
    border: 1px solid #ffe600;
    background: #000;
    color: #ffe600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
    outline: none;
    white-space: nowrap;
}

.toggle-btn:hover {
    background: rgba(255, 230, 0, 0.15);
}

#layout-toggle[aria-pressed="true"] {
    border-color: #00eaff;
    color: #00eaff;
}

#layout-toggle[aria-pressed="true"]:hover {
    background: #00eaff;
    color: #000;
}

/* Estado activo de iluminación y guía */
#highlight-toggle.is-on,
#guide-toggle.is-on {
    border-color: #39ff14;
    color: #39ff14;
}

#highlight-toggle.is-on:hover,
#guide-toggle.is-on:hover {
    background: #39ff14;
    color: #000;
}

#highlight-toggle.is-off,
#guide-toggle.is-off {
    border-color: #777;
    color: #888;
}

#highlight-toggle.is-off:hover,
#guide-toggle.is-off:hover {
    border-color: #aaa;
    color: #ccc;
}

/* Metrónomo */
.metronome-group {
    flex-wrap: wrap;
    justify-content: center;
}

#metro-toggle.is-running {
    background: #ffe600;
    color: #000;
    border-color: #ffe600;
    box-shadow: 0 0 10px rgba(255, 230, 0, 0.5);
}

.bpm-controls {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.bpm-step-btn {
    font-family: 'Comfortaa', cursive;
    font-weight: 700;
    font-size: 0.9rem;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    border: 1px solid #ffe600;
    background: #000;
    color: #ffe600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background 0.2s, color 0.2s;
}

.bpm-step-btn:hover {
    background: #ffe600;
    color: #000;
}

#bpm-input {
    font-family: 'Comfortaa', cursive;
    font-weight: 700;
    font-size: 0.9rem;
    width: 3.2rem;
    padding: 0.25em 0.3em;
    border-radius: 0.6em;
    border: 1px solid #ffe600;
    background: #000;
    color: #ffe600;
    text-align: center;
    outline: none;
    -moz-appearance: textfield;
}

#bpm-input::-webkit-outer-spin-button,
#bpm-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bpm-label {
    color: #ffe600;
    font-size: 0.8rem;
    font-weight: 700;
}

#bpm-slider {
    width: 80px;
    accent-color: #ffe600;
    cursor: pointer;
}

/* Indicador visual LED del metrónomo */
.metro-led {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid #555;
    background: #1a1a1a;
    display: inline-block;
    transition: background 0.05s, box-shadow 0.05s, transform 0.05s;
}

.metro-led.pulse {
    background: #39ff14;
    border-color: #39ff14;
    box-shadow: 0 0 12px #39ff14, 0 0 24px #39ff14;
    transform: scale(1.25);
}

/* =====================================================
   RECUADRO GUÍA DE GRABACIÓN (16:9 Horizontal / 9:16 Vertical)
   ===================================================== */
.stage-frame {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    border: 1px dashed transparent;
    border-radius: 0.75rem;
    transition: border-color 0.2s, width 0.25s, height 0.25s;
}

.stage-frame.show-guide {
    border-color: rgba(255, 230, 0, 0.45);
}

/* Etiqueta discreta con la proporción (16:9 o 9:16) */
.aspect-badge {
    position: absolute;
    top: 0.55rem;
    right: 0.75rem;
    font-size: 0.75rem;
    color: rgba(255, 230, 0, 0.55);
    border: 1px solid rgba(255, 230, 0, 0.35);
    padding: 0.15em 0.55em;
    border-radius: 0.5em;
    pointer-events: none;
    user-select: none;
    display: none;
}

.stage-frame.show-guide .aspect-badge {
    display: inline-block;
}

/* Ocultar borde guía durante la exportación PNG */
.stage-frame.is-capturing {
    border-color: transparent !important;
}

.stage-frame.is-capturing .aspect-badge {
    display: none !important;
}

/* Proporción 16:9 (Modo Horizontal) */
.stage-frame.is-horizontal {
    aspect-ratio: 16 / 9;
    width: min(92vw, calc(66vh * 16 / 9));
    max-width: 960px;
}

/* Proporción 9:16 (Modo Vertical para Reels / TikTok / Shorts) */
.stage-frame.is-vertical {
    aspect-ratio: 9 / 16;
    height: min(73vh, calc(90vw * 16 / 9));
    width: auto;
}

/* Contenedor de círculos */
.circle-container {
    display: flex;
    flex-direction: row;
    gap: 0.65rem;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    box-sizing: border-box;
}

/* En modo vertical: columna invertida (1 abajo -> 8 arriba) */
.stage-frame.is-vertical .circle-container {
    flex-direction: column-reverse;
    gap: min(1.2vh, 0.65rem);
    padding: 1rem;
}

.circle-btn {
    aspect-ratio: 1 / 1;
    width: min(9vw, 68px);
    min-width: 38px;
    max-width: 76px;
    height: auto;
    border-radius: 50%;
    border: 1px solid #39ff14;
    background: transparent;
    color: #39ff14;
    font-family: 'Comfortaa', cursive;
    font-weight: 700;
    font-size: min(5vw, 1.85rem);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    outline: none;
    transition: background 0.18s, color 0.18s, transform 0.18s, box-shadow 0.18s;
    box-sizing: border-box;
    position: relative;
    z-index: 1;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Tamaño de los círculos ajustado a la altura del marco 9:16 en modo vertical */
.stage-frame.is-vertical .circle-btn {
    width: min(6.2vh, 56px);
    min-width: 30px;
    max-width: 60px;
    font-size: min(3.1vh, 1.5rem);
}

/* Botones 2 y 6: azul neón */
.circle-btn:nth-child(2),
.circle-btn:nth-child(6) {
    border-color: #00eaff;
    color: #00eaff;
}

/* Botones 4 y 7: rojo */
.circle-btn:nth-child(4),
.circle-btn:nth-child(7) {
    border-color: #ff2222;
    color: #ff2222;
}

/* =====================================================
   ANIMACIÓN AL ILUMINARSE (Horizontal vs Vertical)
   ===================================================== */

/* Horizontal (16:9): salta hacia arriba */
.circle-btn.active {
    background: #39ff14;
    color: #000;
    transform: scale(1.3) translateY(-30px);
    box-shadow: 0 0 18px rgba(57, 255, 20, 0.75);
    z-index: 10;
}

.circle-btn:nth-child(2).active,
.circle-btn:nth-child(6).active {
    background: #00eaff;
    color: #000;
    transform: scale(1.3) translateY(-30px);
    box-shadow: 0 0 18px rgba(0, 234, 255, 0.75);
    z-index: 10;
}

.circle-btn:nth-child(4).active,
.circle-btn:nth-child(7).active {
    background: #ff2222;
    color: #000;
    transform: scale(1.3) translateY(-30px);
    box-shadow: 0 0 18px rgba(255, 34, 34, 0.75);
    z-index: 10;
}

/* Vertical (9:16): crece y se desplaza hacia la derecha sin tapar el círculo superior */
.stage-frame.is-vertical .circle-btn.active,
.stage-frame.is-vertical .circle-btn:nth-child(2).active,
.stage-frame.is-vertical .circle-btn:nth-child(6).active,
.stage-frame.is-vertical .circle-btn:nth-child(4).active,
.stage-frame.is-vertical .circle-btn:nth-child(7).active {
    transform: scale(1.3) translateX(26px);
}

/* Modo sin iluminación: evita cualquier pista visual al tocar */
.circle-container.no-highlight .circle-btn,
.circle-container.no-highlight .circle-btn:active,
.circle-container.no-highlight .circle-btn:focus {
    background: transparent !important;
    transform: none !important;
    box-shadow: none !important;
}

@media (max-width: 600px) {
    .controls-panel {
        padding: 0.6rem;
        gap: 0.55rem;
        margin-bottom: 0.8rem;
    }
    .circle-container {
        gap: 0.4rem;
        padding: 0.75rem;
    }
    .stage-frame.is-horizontal .circle-btn {
        width: min(9.5vw, 46px);
        min-width: 28px;
        max-width: 54px;
        font-size: min(5.5vw, 1.15rem);
        border-width: 1px;
    }
}

/* Respeta preferencias de movimiento del sistema */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}