:root {
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --card-radius: 16px;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --color-primario: #5867dd;
    --color-secundario: #ffffff;
    --color-terciario: #79829c;
    --color-acento: #34d399;
    --duolingo-orange: #ff9600;
    --bg-light: #f8f9fa;
    --border-color: #e2e8f0;
    --page-bg: #f8f9fa;
}

body {
    font-family: 'Nunito', 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--page-bg);
}

.dashboard-main { 
    max-width: 1400px; 
    margin: 0 auto; 
    padding: 1.5rem; /* Padding base para móvil */
    flex-grow: 1;
}

.dashboard-header { 
    text-align: left; 
    margin-bottom: 2rem; 
}
.dashboard-header h2 { 
    font-size: 2rem; /* Tamaño ajustado para móvil */
    font-weight: 800; 
    color: var(--text-primary); 
    margin: 0; 
}
.dashboard-header p { 
    font-size: 1.1rem; 
    color: var(--color-terciario); 
}

.dashboard-layout {
    display: grid;
    grid-template-columns: 1fr; /* Una columna por defecto para móvil */
    gap: 2rem;
    align-items: flex-start;
}

.dashboard-main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem; /* Espaciado ajustado */
}

/* --- INICIO DE LA SOLUCIÓN --- */
.dashboard-sidebar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem; /* Esta es la clave: añade un espacio de 1.5rem entre las tarjetas */
}
/* --- FIN DE LA SOLUCIÓN --- */

.dashboard-card { 
    background-color: var(--color-secundario); 
    border-radius: var(--card-radius); 
    padding: 1.5rem;
    box-shadow: var(--card-shadow); 
    transition: transform 0.3s ease, box-shadow 0.3s ease; 
    display: flex; 
    flex-direction: column;
}
.dashboard-card:hover { 
    transform: translateY(-5px); 
    box-shadow: var(--card-shadow-hover);
}
.dashboard-card h3 { 
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem; 
    font-weight: 700; 
    color: var(--text-primary); 
    margin-top: 0; 
    margin-bottom: 1.5rem; 
    padding-bottom: 1rem; 
    border-bottom: 1px solid var(--border-color); 
}
.dashboard-card h3 svg {
    width: 24px;
    height: 24px;
    color: var(--color-primario);
}

.primary-card {
    background: linear-gradient(135deg, var(--color-primario), #4a58c0);
    color: white;
}
.primary-card h3, .primary-card h3 svg {
    color: white;
    border-bottom-color: rgba(255,255,255,0.2);
}
.continue-learning-content {
    display: flex;
    flex-direction: column; /* Apilado en móvil */
    align-items: center;
    text-align: center;
    gap: 1rem;
    flex-grow: 1;
}
#continue-book-cover { 
    width: 90px; 
    height: 135px; 
    object-fit: cover; 
    border-radius: 8px; 
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.continue-learning-details {
    flex-grow: 1;
}
.continue-learning-details p { 
    font-weight: 700; 
    font-size: 1.2rem; 
    margin: 0 0 1rem 0; 
}
.progress-bar-container-dash { 
    background-color: rgba(255,255,255,0.2); 
    border-radius: 10px; 
    height: 12px; 
    overflow: hidden; 
    margin-bottom: 0.5rem; 
}
.progress-bar-dash { 
    background: linear-gradient(90deg, #34d399, #a7f3d0);
    height: 100%; 
    width: 0%; 
    transition: width 0.5s ease; 
}
#continue-book-progress-text { 
    font-size: 0.9rem; 
    color: white;
    opacity: 0.8;
}

.btn {
    text-decoration: none; /* Elimina el subrayado de todos los botones/enlaces con esta clase */
}

.btn.btn-primary { 
    align-self: center; 
    margin-top: 1.5rem;
    padding: .9rem 1.5rem; 
    background-color: var(--color-secundario); 
    color: var(--color-primario); 
    border-radius: 8px; 
    font-weight: 700;
}

.btn.btn-primary:hover { 
    background-color: #f0f2f5; 
}

.daily-review-content {
    display: flex;
    flex-direction: column; 
    align-items: center; /* Centra los elementos verticalmente en móvil */
    justify-content: space-between;
    gap: 1.5rem; /* Aumenta el espacio para mejor visualización */
    width: 100%;
    flex-grow: 1; /* Asegura que ocupe el espacio disponible */
}

.due-count-display {
    text-align: center;
}
.due-count-display span {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-primario);
    line-height: 1;
}
.due-count-display p {
    margin: 0;
    color: var(--color-terciario);
    font-weight: 600;
}
.daily-review-content .btn.btn-secondary {
    width: auto; /* Ancho automático para que se ajuste al contenido */
    padding: 0.9rem 1.8rem;
    background-color: var(--color-primario);
    color: var(--color-secundario);
    border: none;
    font-weight: 700;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}
.daily-review-content .btn.btn-secondary:hover {
    background-color: #4a58c0; /* Hover más oscuro */
}

.goals-streak-content {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: 2rem;
}
.daily-goal {
    text-align: center;
}
.daily-goal p {
    margin: 0 0 0.5rem 0;
    font-weight: 600;
    color: var(--color-terciario);
}
.daily-goal span {
    font-size: 3rem;
    line-height: 1;
}
#daily-goal-status.completed { color: var(--color-acento); }
#daily-goal-status.pending { color: var(--border-color); }

.streak-display p {
    font-weight: 600;
    color: var(--color-terciario);
    margin: 0 0 0.5rem 0;
    text-align: center;
}
.streak-calendar-week { 
    display: flex; 
    justify-content: space-around; 
    align-items: center; 
    background-color: var(--bg-light);
    border-radius: 10px;
    padding: 0.75rem;
}
.streak-day { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    font-size: 0.8rem; 
    color: var(--color-terciario); 
    font-weight: 700;
}
.streak-day .day-circle { 
    width: 32px;
    height: 32px; 
    border-radius: 50%; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    margin-top: 0.5rem; 
    background-color: var(--color-secundario); 
    color: var(--color-terciario); 
    border: 2px solid var(--border-color); 
    transition: all 0.2s ease;
}
.streak-day .day-circle.active { 
    background-color: var(--duolingo-orange); 
    color: white; 
    border-color: var(--duolingo-orange);
    box-shadow: 0 0 15px rgba(255, 150, 0, 0.5);
}

#suggestions-container, #recommendations-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.suggestion-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-radius: 10px;
    transition: background-color 0.2s ease;
    cursor: pointer;
}
.suggestion-card:hover {
    background-color: var(--bg-light);
}
.suggestion-card img {
    width: 50px;
    height: 75px;
    object-fit: cover;
    border-radius: 5px;
    flex-shrink: 0;
}
.suggestion-details p {
    margin: 0;
    font-weight: 700;
    line-height: 1.3;
}
.suggestion-details span {
    font-size: 0.85rem;
    color: var(--color-terciario);
}

#challenge-card {
    background: linear-gradient(135deg, #1a202c, #2d3748);
    color: white;
}

#challenge-card h3, #challenge-card h3 svg {
    color: white;
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.challenge-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex-grow: 1;
    gap: 1rem;
}

.challenge-content p {
    margin: 0;
    font-size: 1rem;
    opacity: 0.9;
}

.btn.btn-challenge {
    background-color: var(--duolingo-orange);
    color: white;
    padding: 0.9rem 2rem;
    border-radius: 8px;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    text-decoration: none;
}

.btn.btn-challenge:hover {
    background-color: #ffae33;
    transform: translateY(-2px);
}

.challenge-complete-text {
    font-weight: 700;
    color: var(--color-acento);
    background-color: rgba(52, 211, 153, 0.1);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
}

/* --- Daily Wisdom Card Styles --- */
.wisdom-card {
    background: linear-gradient(135deg, #fefce8, #fffbeb);
    border: 1px solid #fde68a;
    grid-column: 1 / -1; /* Ocupa todo el ancho en layout de grid */
}

.wisdom-card h3 {
    color: #92400e; /* Marrón oscuro para el título */
    border-bottom-color: #fde68a;
}

.wisdom-card h3 svg {
    color: #f59e0b; /* Naranja/dorado para el icono */
}

#daily-wisdom-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.wisdom-content-quote {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-primary);
    position: relative;
    padding-left: 2.5rem;
}

.wisdom-content-quote::before {
    content: '“';
    position: absolute;
    left: 0;
    top: -0.5rem;
    font-size: 4rem;
    color: #fcd34d;
    font-family: serif;
}

.wisdom-content-note {
    background: rgba(255, 255, 255, 0.6);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #fcd34d;
    font-style: italic;
    color: var(--text-secondary);
}

.wisdom-content-source {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-align: right;
    margin-top: 1rem;
}

footer { text-align: center; padding: 2rem; font-size: 0.9rem; color: var(--color-terciario); margin-top: auto; }

/* --- Media Queries para tablets y escritorio --- */
@media (min-width: 768px) {
    .dashboard-main { 
        padding: 2.5rem; 
    }
    .dashboard-header h2 { 
        font-size: 2.5rem; 
    }
    .dashboard-main-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .primary-card,
    #daily-review-card,
    .dashboard-grid-group {
        grid-column: 1 / -1;
    }

    .dashboard-grid-group {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .continue-learning-content {
        flex-direction: row; 
        text-align: left;
        align-items: center;
    }
    .btn.btn-primary {
        align-self: flex-start;
    }
    .daily-review-content {
        flex-direction: row;
    }
    .btn.btn-secondary {
        width: auto;
    }
    .streak-day .day-circle {
        width: 38px;
        height: 38px;
    }
}

@media (min-width: 1024px) {
    .dashboard-layout { 
        grid-template-columns: 2fr 1fr; 
    }
    
    .goals-streak-content {
        grid-template-columns: 1fr 2fr;
    }
}