:root {
    --bg: #f0f0f0;
    --text: #333;
    --panel-bg: #ffffff;
    --panel-border: #333333;
    --button-bg: #4CAF50;
    --button-text: #ffffff;
    --button-hover: #45a049;
    --selected-bg: #2196F3;
    --selected-text: #ffffff;
}

html {
    font-size: 18px;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--bg);
    color: var(--text);
}

body.high-contrast {
    background-color: #000;
    color: #fff;
}

body.high-contrast .accessibility-panel,
body.high-contrast #contenedor-nivel,
body.high-contrast .botones-materias button,
body.high-contrast .botones-niveles button,
body.high-contrast .activity-controls button,
body.high-contrast .panel-section button {
    background-color: #000;
    color: #fff;
    border-color: #fff;
}

body.focus-mode .intro-text {
    display: none;
}

body.help-visible button {
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.35);
}

body.show-pictograms .activity-title::before {
    content: '💡 ';
}

.accessibility-panel {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 320px;
    background-color: var(--panel-bg);
    color: var(--text);
    border: 2px solid var(--panel-border);
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
    z-index: 1000;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
}

.accessibility-panel h2 {
    margin: 0 0 12px;
    font-size: 1.1rem;
}

.panel-section {
    margin-bottom: 14px;
}

.panel-label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.panel-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.panel-buttons button {
    flex: 1 1 auto;
    padding: 8px 10px;
    font-size: 0.95rem;
    border: 1px solid #333;
    background-color: #fff;
    color: #333;
    border-radius: 8px;
    cursor: pointer;
}

.panel-buttons button.active,
.panel-buttons button:focus {
    background-color: var(--selected-bg);
    color: var(--selected-text);
    border-color: var(--selected-bg);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.page-content {
    max-width: 1200px;
    margin: 0 auto;
    padding-right: 350px;
}

.intro-text {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 40px;
}

h1 {
    text-align: center;
    margin-bottom: 24px;
}

/* Panel de Alumno */
.alumno-panel {
    background-color: #e3f2fd;
    border: 2px solid #2196F3;
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 20px;
    text-align: center;
}

.alumno-input-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.alumno-input-group label {
    font-weight: bold;
    font-size: 1rem;
}

.alumno-input-group input {
    padding: 10px 14px;
    font-size: 1rem;
    border: 1px solid #2196F3;
    border-radius: 6px;
    width: 200px;
    max-width: 100%;
}

.alumno-input-group input:focus {
    outline: 3px solid #2196F3;
    outline-offset: 2px;
}

#btn-guardar-alumno {
    padding: 10px 24px;
    font-size: 1rem;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

#btn-guardar-alumno:hover {
    background-color: #1976D2;
}

.alumno-display {
    font-weight: bold;
    font-size: 1.1rem;
    color: #1976D2;
}

/* Panel de Estadísticas */
.estadisticas-panel {
    background-color: #f3e5f5;
    border: 2px solid #9C27B0;
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 20px;
}

.stats-row {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.stat-label {
    font-weight: bold;
    font-size: 0.95rem;
    color: #6A1B9A;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: #9C27B0;
}

#btn-reiniciar-progreso {
    padding: 10px 24px;
    font-size: 1rem;
    background-color: #FF6F00;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

#btn-reiniciar-progreso:hover {
    background-color: #E65100;
}

h1 {

.botones-materias,
.botones-niveles {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

button {
    padding: 20px 40px;
    font-size: 1.2rem;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover {
    background-color: var(--button-hover);
    transform: translateY(-1px);
}

.progress-wrapper {
    width: 100%;
}

.progress-fill {
    transition: width 0.5s ease;
}

button:focus {
    outline: 3px solid #000;
    outline-offset: 3px;
}

button.seleccionado {
    background-color: var(--selected-bg);
    color: var(--selected-text);
}

#contenedor-nivel {
    margin-top: 40px;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 10px;
    min-height: 300px;
    text-align: center;
}

.activity-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.activity-controls button {
    min-width: 120px;
}

.secuencia-visual {
    display: grid;
    grid-template-columns: repeat(8, 40px);
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
}

.secuencia-visual div {
    width: 40px;
    height: 40px;
    border: 2px dashed #999;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.secuencia-visual span {
    display: inline-block;
}

@media (max-width: 900px) {
    .page-content {
        padding-right: 20px;
    }
    .accessibility-panel {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        top: auto;
        width: auto;
        max-height: 260px;
        border-radius: 0;
    }
    body {
        padding-bottom: 300px;
    }
}

@media (max-width: 600px) {
    .botones-materias,
    .botones-niveles {
        flex-direction: column;
        align-items: center;
    }
    button {
        width: 80%;
        max-width: 300px;
    }
}

/* ================================================== */
/* ESTILOS DE ACCESIBILIDAD - PERFILES Y MODOS */
/* ================================================== */

/* Alto Contraste */
body.alto-contraste {
    background-color: #000;
    color: #fff;
}

body.alto-contraste .page-content {
    background-color: #000;
    color: #fff;
}

body.alto-contraste button {
    background-color: #fff;
    color: #000;
    border: 3px solid #fff;
}

body.alto-contraste button:hover {
    background-color: #ffff00;
    color: #000;
}

body.alto-contraste button.activo {
    background-color: #ffff00;
    color: #000;
    font-weight: bold;
}

body.alto-contraste .accessibility-panel,
body.alto-contraste .alumno-panel,
body.alto-contraste .estadisticas-panel,
body.alto-contraste #contenedor-nivel {
    background-color: #000;
    color: #fff;
    border-color: #fff;
}

/* Modo Concentración */
body.modo-concentracion .intro-text {
    display: none;
}

body.modo-concentracion .accessibility-panel {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 280px;
    max-height: 200px;
    overflow-y: auto;
    opacity: 0.8;
    z-index: 1000;
}

/* Ayudas Visuales */
body.ayudas-visibles button {
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.35);
}

/* Botón Activo */
.panel-buttons button.activo {
    background-color: #2196F3;
    color: #ffffff;
    font-weight: bold;
    border: 2px solid #1976D2;
}

/* Anuncio de Accesibilidad */
#anuncio-accesibilidad {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}