body {
    font-family: 'Inter', sans-serif;
    background-color: #f0f2f5;
}

/* Modo oscuro por defecto */
.dark body {
    background-color: #111827;
}
.container {
    max-width: 1000px;
}
.drop-zone {
    min-height: 50px;
    transition: background-color 0.2s ease;
}
.drop-zone.drag-over {
    background-color: #c7d2fe;
    border-style: solid;
}

/* Estilos para modo oscuro */
.dark .drop-zone {
    background-color: #374151;
    border: 2px dashed #6b7280;
}

.dark .drop-zone.drag-over {
    background-color: #4f46e5;
    border-color: #6366f1;
}
.draggable {
    cursor: grab;
}
.draggable:active {
    cursor: grabbing;
}
.dragging {
    opacity: 0.5;
    transform: scale(1.05);
}

.dark .draggable {
    background-color: #4b5563;
    color: #f3f4f6;
    border: 1px solid #6b7280;
}
/* Ocultar scrollbars completamente */
.option-container::-webkit-scrollbar {
    display: none;
}

#concepts-column::-webkit-scrollbar {
    display: none;
}

/* Firefox - ocultar scrollbars */
.option-container, #concepts-column {
    scrollbar-width: none;
}

/* Para navegadores que soportan -ms-overflow-style */
.option-container, #concepts-column {
    -ms-overflow-style: none;
}

/* Estilos para feedback de respuestas */
.correct-answer {
    background-color: #d1fae5 !important;
    border-color: #10b981 !important;
    border-width: 3px !important;
    border-style: solid !important;
    position: relative;
    animation: correctPulse 0.5s ease-in-out;
}

.dark .correct-answer {
    background-color: #065f46 !important;
    border-color: #34d399 !important;
    color: #d1fae5 !important;
}

.incorrect-answer {
    background-color: #fee2e2 !important;
    border-color: #ef4444 !important;
    border-width: 3px !important;
    border-style: solid !important;
    position: relative;
    animation: incorrectShake 0.5s ease-in-out;
}

.dark .incorrect-answer {
    background-color: #7f1d1d !important;
    border-color: #f87171 !important;
    color: #fee2e2 !important;
}

/* Iconos de feedback */
.feedback-icon {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    font-size: 24px;
    font-weight: bold;
    pointer-events: none;
    z-index: 10;
}

.correct-icon {
    color: #10b981;
    animation: scaleIn 0.3s ease-in-out;
}

.dark .correct-icon {
    color: #34d399;
}

.incorrect-icon {
    color: #ef4444;
    animation: scaleIn 0.3s ease-in-out;
}

.dark .incorrect-icon {
    color: #f87171;
}

/* Animaciones */
@keyframes correctPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes incorrectShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes scaleIn {
    0% { transform: translateY(-50%) scale(0); }
    50% { transform: translateY(-50%) scale(1.2); }
    100% { transform: translateY(-50%) scale(1); }
}

/* Caja de feedback para respuestas incorrectas */
.feedback-box {
    animation: slideDown 0.3s ease-in-out;
}

@keyframes slideDown {
    0% { 
        opacity: 0;
        transform: translateY(-10px);
    }
    100% { 
        opacity: 1;
        transform: translateY(0);
    }
}

/* Estilos para botones de hint */
.hint-btn {
    min-width: 40px;
    font-size: 18px;
}

/* Estilo para resaltar la respuesta correcta cuando se usa hint */
.hint-highlight {
    background-color: #fef08a !important;
    border-color: #eab308 !important;
}

.dark .hint-highlight {
    background-color: #ca8a04 !important;
    border-color: #facc15 !important;
    color: #fef3c7 !important;
}