/**
 * Music Master Bass - Estilos Principales
 * Tema oscuro optimizado para estudios de música
 */

/* CSS Reset y Variables */
:root {
    /* Colores del tema oscuro */
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f0f23;
    
    --text-primary: #ffffff;
    --text-secondary: #b8c5d6;
    --text-muted: #7a8796;
    
    --accent-primary: #4CAF50;    /* Verde para éxito */
    --accent-secondary: #2196F3;  /* Azul para información */
    --accent-warning: #FFC107;    /* Amarillo para advertencia */
    --accent-error: #f44336;      /* Rojo para error */
    
    --border-color: #2a2a42;
    --border-light: #3a3a58;
    
    /* Bass específico */
    --bass-wood: #8d6e63;
    --bass-frets: #424242;
    --bass-strings: #37474f;
    --bass-inlays: #ffc107;
    
    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Tipografía */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-sm: 12px;
    --font-size-md: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;
    --font-size-xxl: 24px;
    
    /* Bordes */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    
    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.text-muted {
    color: var(--text-muted);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

/* Splash Screen */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%),
                url('../assets/SplashScreenBass.png') center/cover no-repeat;
    background-blend-mode: overlay;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.splash-content {
    text-align: center;
    max-width: 800px;
    padding: var(--spacing-lg) var(--spacing-xl);
    /* Desplazar hacia arriba */
    margin-top: -10vh;
}

.splash-logo {
    width: 300px !important;
    height: auto !important;
    /* Redondear las esquinas del logo */
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
    background: none;
    padding: 0;
    /* Mantener proporciones naturales de la imagen */
    object-fit: contain;
}

.splash-content h1 {
    font-size: 4.5rem !important;
    font-weight: bold;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary) !important;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7);
    letter-spacing: -2px;
}

.splash-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem !important;
    font-weight: 300;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.6);
}

.loading-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 3px;
}

.loading-text {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Main App */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

/* Header */
.header {
    background-image: url('../assets/Fondo3.png');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    padding: var(--spacing-lg) var(--spacing-lg) !important;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    min-height: 140px !important;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-left .logo,
.header-left .header-logo {
    width: 120px !important;
    height: 120px !important;
    border-radius: 25px !important;
    overflow: hidden !important;
    object-fit: contain;
}

.header h1 {
    color: var(--text-primary);
    font-size: 28px !important;
    font-weight: bold;
}

.header-right {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--border-color);
    transform: translateY(-1px);
}

.icon-btn.connected {
    background: var(--accent-primary);
    color: white;
}

/* Bass Configuration */
.bass-config {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
}

.config-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.config-group label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: var(--font-size-md);
}

.config-group select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.config-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.config-group select option {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Exercise Selector Specific Styles */
.exercise-info {
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.exercise-progress {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Exercise options styling */
#exerciseSelector option:disabled {
    color: var(--text-muted);
    background: var(--bg-tertiary);
    opacity: 0.6;
}

#exerciseSelector option[data-locked="true"] {
    color: var(--text-muted);
    background: var(--bg-tertiary);
    font-style: italic;
}

#exerciseSelector option[data-locked="true"]:before {
    content: "🔒 ";
}

#exerciseSelector option[data-completed="true"]:before {
    content: "✅ ";
}

#exerciseSelector option[data-current="true"] {
    background: var(--accent-secondary);
    color: white;
    font-weight: bold;
}

/* Game Container */
.game-container {
    flex: 1;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
}

/* Staff Container */
.staff-container {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
}

.staff-canvas {
    width: 100%;
    height: 340px;
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    display: block;
    max-width: 100%;
    box-sizing: border-box;
}

.staff-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
}

.current-note, .target-note {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.current-note {
    color: var(--accent-secondary);
}

.target-note {
    color: var(--accent-primary);
}

/* Fretboard Container */
.fretboard-container {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
}

.fretboard-canvas {
    width: 100%;
    height: 200px;
    border-radius: var(--border-radius);
    background: var(--bass-wood);
    display: block;
    max-width: 100%;
    box-sizing: border-box;
}

.string-labels {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.string-label {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    text-align: center;
    min-width: 40px;
}

/* Audio Feedback */
.audio-feedback {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.tuner-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.frequency-display {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.frequency-display span:first-child {
    color: var(--text-secondary);
}

.frequency-display span:last-child {
    color: var(--accent-primary);
    min-width: 60px;
    text-align: center;
}

.tuning-indicator {
    position: relative;
    width: 120px;
    height: 30px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tuning-needle {
    position: absolute;
    width: 3px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.tuning-scale {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 0 var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Controls */
.controls {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr !important;
    gap: var(--spacing-md);
    align-items: center;
    width: 100%;
    box-sizing: border-box;
}

.game-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.center-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.notes-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: 8px;
    justify-content: center;
    min-width: 0; /* Permitir que se ajuste al contenido pero respete el grid */
}

.note-separator {
    color: var(--text-muted);
    font-weight: bold;
    margin: 0 var(--spacing-xs);
}

.current-note, .target-note {
    font-size: var(--font-size-md);
    font-weight: 600;
}

.current-note {
    color: var(--accent-secondary);
}

.target-note {
    color: var(--accent-primary);
}

.control-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 100px;
}

.control-btn:hover:not(:disabled) {
    background: var(--border-color);
    transform: translateY(-1px);
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.control-btn.primary {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.control-btn.primary:hover:not(:disabled) {
    background: #45a049;
    border-color: #45a049;
}

.metronome-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    justify-content: flex-end;
}

/* Tuner Controls */
.tuner-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: 8px;
    justify-content: center;
    min-width: 0; /* Permitir que se ajuste al contenido pero respete el grid */
}

.tuner-note {
    color: var(--accent-primary);
    font-weight: 600;
    min-width: 28px;
    text-align: center;
}

.tuner-freq {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    min-width: 45px;
    text-align: center;
}

.metronome-controls label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.bpm-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: var(--font-size-md);
}

.metronome-btn {
    padding: var(--spacing-xs) var(--spacing-sm) !important;
    min-width: 32px !important;
    font-size: var(--font-size-md);
}

.metronome-controls input[type="range"] {
    width: 70px;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    outline: none;
}

.metronome-controls input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
}

.metronome-controls input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

#bpmDisplay {
    color: var(--accent-primary);
    font-weight: 600;
    min-width: 30px;
    text-align: center;
    font-size: var(--font-size-sm);
}

/* Score Panel */
.score-panel {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 16px;
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    width: 100%;
    box-sizing: border-box;
}

.score-item {
    flex: 1;
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    min-width: 0; /* Permite que el texto se contraiga */
    box-sizing: border-box; /* 🚀 CORRECCIÓN: Evita desbordamiento de animaciones */
    /* overflow: hidden; REMOVIDO: La animación de rotación necesita espacio */
}

.score-item label {
    display: block;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.score-item span {
    display: block;
    color: var(--accent-primary);
    font-size: var(--font-size-xl);
    font-weight: bold;
    box-sizing: border-box; /* 🚀 CORRECCIÓN: Tamaño correcto */
    width: 100%; /* 🚀 CORRECCIÓN: Ocupa todo el ancho disponible */
    max-width: 100%; /* 🚀 CORRECCIÓN: No desborda el contenedor */
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: var(--accent-primary);
    font-size: var(--font-size-xl);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

.setting-group {
    margin-bottom: var(--spacing-lg);
}

.setting-group:last-child {
    margin-bottom: 0;
}

.setting-group label {
    display: block;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.setting-group select,
.setting-group input[type="number"] {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-md);
}

.setting-group input[type="range"] {
    width: 100%;
    margin-right: var(--spacing-md);
}

/* Error Message */
.error-message {
    animation: slideInDown 0.3s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-md);
    }
    
    .header h1 {
        font-size: var(--font-size-lg);
    }
    
    .bass-config {
        grid-template-columns: repeat(2, 1fr);
        padding: var(--spacing-md);
    }
    
    .game-container {
        padding: var(--spacing-md);
    }
    
    .controls {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .game-controls {
        flex-wrap: wrap;
    }
    
    .control-btn {
        flex: 1;
        min-width: auto;
    }
    
    .score-panel {
        flex-wrap: wrap;
        padding: var(--spacing-md);
        gap: var(--spacing-sm); /* 🚀 AÑADIDO: gap más pequeño en móviles */
    }
    
    .score-item {
        flex: 1 1 calc(50% - var(--spacing-sm));
        min-width: calc(50% - var(--spacing-sm));
        margin-bottom: var(--spacing-sm); /* 🚀 AÑADIDO: margen inferior para separación */
        box-sizing: border-box; /* 🚀 AÑADIDO: Consistencia con el estilo base */
        overflow: hidden; /* 🚀 AÑADIDO: Contiene animaciones */
    }
    
    .metronome-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .staff-canvas,
    .fretboard-canvas {
        height: 250px;
    }
}

/* ==========================================
   🎓 EXERCISE HELP SYSTEM
   ========================================== */

/* Exercise selector container with help button */
.exercise-selector-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
}

.exercise-selector-container select {
    flex: 1;
}

/* Help button styling */
.help-btn {
    background: var(--accent-secondary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.help-btn:hover {
    background: #1976D2;
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(33, 150, 243, 0.4);
}

.help-btn:active {
    transform: scale(0.95);
}

/* Exercise Help Modal specific styling */
.exercise-help-modal {
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.exercise-help-content {
    padding: var(--spacing-sm);
}

.help-section {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-primary);
}

.help-section h4 {
    color: var(--accent-primary);
    font-size: var(--font-size-lg);
    margin: 0 0 var(--spacing-sm) 0;
    font-weight: 600;
}

.help-section p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.help-tips {
    list-style: none;
    padding: 0;
    margin: 0;
}

.help-tips li {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    position: relative;
}

.help-tips li::before {
    content: "💡";
    position: absolute;
    left: 0;
    top: 0;
}

/* Different colors for different sections */
.help-section:nth-child(1) { border-left-color: var(--accent-secondary); }
.help-section:nth-child(2) { border-left-color: var(--accent-primary); }
.help-section:nth-child(3) { border-left-color: var(--accent-warning); }
.help-section:nth-child(4) { border-left-color: #9C27B0; }
.help-section:nth-child(5) { border-left-color: #FF5722; }
.help-section:nth-child(6) { border-left-color: var(--accent-warning); }
.help-section:nth-child(7) { border-left-color: #00BCD4; }
.help-section:nth-child(8) { border-left-color: var(--accent-primary); }

/* Modal animations */
.modal.show {
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive adjustments for exercise help */
@media (max-width: 768px) {
    .exercise-help-modal {
        max-width: 95vw;
        max-height: 90vh;
        margin: 20px;
    }
    
    .help-section {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .help-btn {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }
}

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

@media (max-width: 480px) {
    .bass-config {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .score-panel {
        flex-direction: column;
        gap: var(--spacing-sm); /* 🚀 AÑADIDO: gap consistente */
    }
    
    .score-item {
        flex: none;
        min-width: auto;
        margin-bottom: 0; /* 🚀 REMOVIDO: margen innecesario en columna */
        box-sizing: border-box; /* 🚀 AÑADIDO: Consistencia */
        overflow: hidden; /* 🚀 AÑADIDO: Contiene animaciones */
    }
    
    .frequency-display {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .tuning-indicator {
        width: 150px;
    }
}

/* ======================================
   🎯 TOAST NOTIFICATION SYSTEM
   ====================================== */

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    pointer-events: none;
    max-width: 400px;
}

.toast {
    background: var(--bg-secondary);
    border: 2px solid var(--accent-primary);
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    padding: 12px 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
    font-family: var(--font-family);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.toast-show {
    transform: translateX(0);
    opacity: 1;
}

.toast-hide {
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease-in;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast-icon {
    font-size: 18px;
    flex-shrink: 0;
}

.toast-message {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
}

/* Toast Types */
.toast-success {
    border-color: var(--success-color);
    background: rgba(76, 175, 80, 0.1);
}

.toast-success .toast-icon {
    color: var(--success-color);
}

.toast-error {
    border-color: var(--error-color);
    background: rgba(244, 67, 54, 0.1);
}

.toast-error .toast-icon {
    color: var(--error-color);
}

.toast-warning {
    border-color: #ff9800;
    background: rgba(255, 152, 0, 0.1);
}

.toast-warning .toast-icon {
    color: #ff9800;
}

.toast-info {
    border-color: var(--accent-primary);
    background: rgba(76, 175, 80, 0.1);
}

.toast-info .toast-icon {
    color: var(--accent-primary);
}

.toast-perfect {
    border-color: #ffd700;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 193, 7, 0.1));
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
    animation: perfectGlow 0.6s ease-out;
}

.toast-perfect .toast-icon {
    color: #ffd700;
    animation: perfectStar 0.8s ease-out;
}

/* 🎯 NUEVO: Estilo para rating "Almost" */
.toast-almost {
    border-color: #ff9800;
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.2), rgba(255, 165, 0, 0.1));
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
    animation: almostPulse 0.5s ease-out;
}

.toast-almost .toast-icon {
    color: #ff9800;
    animation: almostBolt 0.6s ease-out;
}

.toast-great {
    border-color: #00bcd4;
    background: rgba(0, 188, 212, 0.1);
}

.toast-great .toast-icon {
    color: #00bcd4;
}

.toast-good {
    border-color: #8bc34a;
    background: rgba(139, 195, 74, 0.1);
}

.toast-good .toast-icon {
    color: #8bc34a;
}

.toast-miss {
    border-color: #9e9e9e;
    background: rgba(158, 158, 158, 0.1);
}

.toast-miss .toast-icon {
    color: #9e9e9e;
}

/* Animations */
@keyframes perfectGlow {
    0% {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 4px 25px rgba(255, 215, 0, 0.5);
        transform: scale(1.02);
    }
    100% {
        box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
        transform: scale(1);
    }
}

@keyframes perfectStar {
    0%, 100% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.2) rotate(5deg);
    }
    75% {
        transform: scale(1.2) rotate(-5deg);
    }
}

/* 🎯 NUEVAS: Animaciones para rating "Almost" */
@keyframes almostPulse {
    0% {
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 4px 20px rgba(255, 152, 0, 0.4);
        transform: scale(1.05);
    }
    100% {
        box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
        transform: scale(1);
    }
}

@keyframes almostBolt {
    0%, 100% {
        transform: scale(1);
    }
    30% {
        transform: scale(1.3) rotate(-10deg);
    }
    70% {
        transform: scale(1.3) rotate(10deg);
    }
}

/* Mobile responsive */
@media (max-width: 768px) {
    .toast-container {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .toast {
        padding: 10px 14px;
    }
    
    .toast-message {
        font-size: 13px;
    }
}