/* ============================================
   UNIDAD3.CSS - Estilos de Temas 3.1 - 3.11
   Proyecto: Cálculo Integral
   ============================================ */
/* ============================================
   ESTILOS COMPARTIDOS (EJEMPLOS Y FÓRMULAS)
   Copiados de unidad2.css para consistencia
   ============================================ */

/* Ejemplo box */
.ejemplo-box {
    background: linear-gradient(135deg, #fef9c3 0%, #fef08a 100%);
    border: 2px solid #facc15;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.ejemplo-box h5 {
    color: #854d0e;
    margin-bottom: 1rem;
}

.ejemplo-contenido {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Pasos detallados */
.ejemplo-paso-detallado {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.paso-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.paso-body {
    padding: 1rem;
}

.paso-body p {
    margin-bottom: 0.5rem;
}

.paso-body p:last-child {
    margin-bottom: 0;
}

.paso-resultado {
    background: #f0fdf4;
    border-left: 3px solid var(--accent-green);
    padding: 0.5rem 0.75rem;
    margin-top: 0.5rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-weight: 600;
    color: #166534;
}

/* Resultado final */
.ejemplo-resultado-final {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.resultado-label {
    color: rgba(255,255,255,0.9);
    font-weight: 600;
}

.resultado-formula {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
}

/* Formula box */
.formula-box {
    background: white;
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
    margin: 0.5rem 0;
}

.formula-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.formula {
    font-size: 1.1rem;
    color: var(--text-dark);
}

.formula-traduccion {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-style: italic;
}

/* Formula grande */
.formula-grande {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-align: center;
    font-size: 1.3rem;
    color: var(--text-dark);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* Pregunta clave */
.pregunta-clave {
    background: rgba(255,255,255,0.7);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    margin-top: 1rem;
}

/* Lista simple */
.lista-simple {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
}

.lista-simple li {
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.lista-simple li::before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: var(--primary);
    font-weight: bold;
}

/* Responsive */
@media (max-width: 767.98px) {
    .ejemplo-resultado-final {
        flex-direction: column;
        text-align: center;
    }
    
    .resultado-formula {
        font-size: 1.1rem;
    }
    
    .formula-grande {
        font-size: 1.1rem;
        padding: 1rem;
    }
}
/* ============================================
   TEMA 3.1 - ÁREA ENTRE CURVAS
   ============================================ */

/* Explicación visual del área */
.area-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.area-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.area-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    flex-shrink: 0;
}

.area-color.area-arriba {
    background: #ef4444;
}

.area-color.area-abajo {
    background: #3b82f6;
}

.area-color.area-entre {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.5) 0%, rgba(79, 172, 254, 0.5) 100%);
    border: 2px solid var(--primary);
}

/* Controles del área */
.area-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.area-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.area-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.area-dato.area-principal {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
    margin-bottom: 0;
}

.area-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

.area-dato.area-principal .area-label {
    color: rgba(255,255,255,0.9);
}

.area-valor {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
}

.area-dato.area-principal .area-valor {
    color: white;
    font-size: 1.25rem;
}

/* ============================================
   TEMA 3.2 - VOLUMEN POR DISCOS
   ============================================ */

/* Visual de discos apilados */
.visual-discos {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    margin: 1.5rem 0;
}

.disco {
    height: 12px;
    background: linear-gradient(90deg, #667eea 0%, #4facfe 50%, #667eea 100%);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.disco:nth-child(1) { width: 40px; }
.disco:nth-child(2) { width: 60px; }
.disco:nth-child(3) { width: 80px; }
.disco:nth-child(4) { width: 100px; }
.disco:nth-child(5) { width: 120px; }

/* Explicación del disco */
.disco-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.disco-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.disco-simbolo {
    min-width: 50px;
    font-weight: 700;
    color: var(--primary);
}

/* Controles de volumen */
.vol-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.limite-valor {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 0.25rem;
}

.vol-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.vol-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.vol-dato.vol-principal {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
    margin-bottom: 0;
}

.vol-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.vol-label-sm {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
}

.vol-valor {
    font-size: 1.25rem;
    font-weight: 700;
}

.vol-valor-sm {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.vol-dato.vol-principal .vol-label {
    color: rgba(255,255,255,0.9);
}

.vol-dato.vol-principal .vol-valor {
    color: white;
    font-size: 1.5rem;
}

/* ============================================
   TEMA 3.3 - VOLUMEN POR ARANDELAS
   ============================================ */

/* Visual de arandela */
.arandela-visual {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 1.5rem auto;
}

.arandela-exterior {
    position: absolute;
    top: 0;
    left: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #4facfe 100%);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.arandela-interior {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: white;
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.2);
}

/* Explicación de arandela */
.arandela-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.arandela-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.arandela-simbolo {
    min-width: 60px;
    font-weight: 700;
    color: var(--primary);
}

/* ============================================
   TEMA 3.4 - VOLUMEN POR CAPAS CILÍNDRICAS
   ============================================ */

/* Visual de capas */
.capas-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 1.5rem 0;
    position: relative;
    height: 100px;
}

.capa {
    position: absolute;
    border-radius: 50%;
    border: 3px solid;
    background: transparent;
}

.capa.capa-1 {
    width: 100px;
    height: 100px;
    border-color: rgba(102, 126, 234, 0.3);
}

.capa.capa-2 {
    width: 70px;
    height: 70px;
    border-color: rgba(102, 126, 234, 0.5);
}

.capa.capa-3 {
    width: 40px;
    height: 40px;
    border-color: rgba(102, 126, 234, 0.8);
    background: rgba(102, 126, 234, 0.2);
}

/* Explicación de capas */
.capa-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.capa-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.capa-simbolo {
    min-width: 50px;
    font-weight: 700;
    color: var(--primary);
}

/* Comparación de métodos de volumen */
.comparacion-metodos-vol {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.comparacion-metodos-vol h5 {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.metodo-card {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    height: 100%;
    border-left: 4px solid;
}

.metodo-card.metodo-discos {
    border-left-color: var(--primary);
}

.metodo-card.metodo-capas {
    border-left-color: var(--accent-orange);
}

.metodo-card h6 {
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.metodo-card.metodo-discos h6 {
    color: var(--primary);
}

.metodo-card.metodo-capas h6 {
    color: var(--accent-orange);
}

.metodo-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.metodo-card li {
    padding: 0.35rem 0;
    padding-left: 1.25rem;
    position: relative;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.metodo-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    font-weight: bold;
}

.metodo-card.metodo-discos li::before {
    color: var(--primary);
}

.metodo-card.metodo-capas li::before {
    color: var(--accent-orange);
}

/* ============================================
   ESTILOS COMPARTIDOS UNIDAD 3
   ============================================ */

/* Resultado de volumen destacado */
.vol-resultado-destacado {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    color: white;
}

.vol-resultado-destacado .vol-label {
    color: rgba(255,255,255,0.9);
    margin-bottom: 0.5rem;
    display: block;
}

.vol-resultado-destacado .vol-valor {
    font-size: 2rem;
    font-weight: 700;
}

/* ============================================
   RESPONSIVE UNIDAD 3
   ============================================ */

@media (max-width: 991.98px) {
    .visual-discos {
        transform: scale(0.9);
    }
    
    .arandela-visual {
        transform: scale(0.9);
    }
    
    .capas-visual {
        transform: scale(0.9);
    }
}

@media (max-width: 767.98px) {
    .area-controles,
    .vol-controles {
        margin-bottom: 1rem;
    }
    
    .disco-item,
    .arandela-item,
    .capa-item {
        flex-direction: column;
        text-align: center;
        gap: 0.25rem;
    }
    
    .disco-simbolo,
    .arandela-simbolo,
    .capa-simbolo {
        min-width: unset;
    }
    
    .area-explicacion .area-item {
        flex-direction: column;
        text-align: center;
    }
    
    .visual-discos {
        transform: scale(0.8);
    }
    
    .arandela-visual {
        transform: scale(0.8);
    }
    
    .capas-visual {
        transform: scale(0.8);
    }
    
    .metodo-card {
        margin-bottom: 1rem;
    }
    
    .vol-dato.vol-principal .vol-valor {
        font-size: 1.25rem;
    }
    
    .comparacion-metodos-vol {
        padding: 1rem;
    }
}/* Contexto del ejemplo (situación real) */
.ejemplo-contexto {
    background: white;
    border-left: 4px solid #f59e0b;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

.ejemplo-contexto p {
    margin: 0;
    color: var(--text-dark);
    line-height: 1.6;
}

.ejemplo-contexto strong {
    color: #92400e;
}/* ============================================
   TEMA 3.5 - LONGITUD DE ARCO
   ============================================ */

/* Visual del arco */
.arco-visual {
    margin: 1rem 0;
    text-align: center;
}

.arco-svg {
    width: 100%;
    max-width: 250px;
    height: auto;
}

/* Explicación del arco */
.arco-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.arco-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.arco-simbolo {
    min-width: 80px;
    font-weight: 700;
    color: var(--primary);
}

/* Controles del arco */
.arco-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.arco-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.arco-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.arco-dato.arco-principal {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
}

.arco-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.arco-dato.arco-principal .arco-label {
    color: rgba(255,255,255,0.9);
}

.arco-valor {
    font-size: 1.25rem;
    font-weight: 700;
}

.arco-valor-sm {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.arco-dato.arco-principal .arco-valor {
    color: white;
}

/* ============================================
   TEMA 3.6 - ÁREA DE SUPERFICIE
   ============================================ */

/* Visual de superficie */
.superficie-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    margin: 1.5rem 0;
}

.cinta {
    height: 10px;
    background: linear-gradient(90deg, rgba(102,126,234,0.3) 0%, rgba(102,126,234,0.8) 50%, rgba(102,126,234,0.3) 100%);
    border-radius: 50%;
}

.cinta.cinta-1 { width: 40px; }
.cinta.cinta-2 { width: 70px; }
.cinta.cinta-3 { width: 90px; }
.cinta.cinta-4 { width: 100px; }

/* Explicación de superficie */
.superficie-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.superficie-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.superficie-simbolo {
    min-width: 100px;
    font-weight: 700;
    color: var(--primary);
}

/* Controles de superficie */
.superficie-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.superficie-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.superficie-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.superficie-dato.superficie-principal {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
}

.superficie-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.superficie-dato.superficie-principal .superficie-label {
    color: rgba(255,255,255,0.9);
}

.superficie-valor {
    font-size: 1.5rem;
    font-weight: 700;
}

.superficie-dato.superficie-principal .superficie-valor {
    color: white;
}

/* ============================================
   TEMA 3.7 - TRABAJO MECÁNICO
   ============================================ */

/* Visual del resorte */
.trabajo-visual {
    text-align: center;
    margin: 1.5rem 0;
    padding: 1rem;
    background: #f8fafc;
    border-radius: var(--radius-sm);
}

.resorte {
    font-size: 1.5rem;
    font-family: monospace;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.resorte-bloque {
    color: #f59e0b;
}

.trabajo-flecha {
    margin-top: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Casos de trabajo */
.trabajo-casos {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.trabajo-caso {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.trabajo-caso:last-child {
    border-bottom: none;
}

.caso-nombre {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.caso-formula {
    font-weight: 600;
    color: var(--primary);
}

/* Controles de trabajo */
.trabajo-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.trabajo-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.trabajo-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.trabajo-dato.trabajo-principal {
    background: linear-gradient(135deg, var(--accent-orange) 0%, #f59e0b 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
    margin-bottom: 0;
}

.trabajo-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.trabajo-dato.trabajo-principal .trabajo-label {
    color: rgba(255,255,255,0.9);
}

.trabajo-valor {
    font-size: 1.5rem;
    font-weight: 700;
}

.trabajo-valor-sm {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.trabajo-dato.trabajo-principal .trabajo-valor {
    color: white;
}

/* ============================================
   TEMA 3.8 - PRESIÓN HIDROSTÁTICA
   ============================================ */

/* Visual de presión */
.presion-visual {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
}

.tanque {
    width: 120px;
    height: 100px;
    border: 4px solid #64748b;
    border-top: none;
    border-radius: 0 0 8px 8px;
    position: relative;
    overflow: hidden;
}

.agua {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 90%;
    background: linear-gradient(180deg, rgba(59,130,246,0.3) 0%, rgba(59,130,246,0.7) 100%);
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    padding-left: 5px;
}

.flecha-presion {
    color: #1e40af;
    font-weight: bold;
    font-size: 0.9rem;
}

/* Explicación de presión */
.presion-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.presion-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
}

.presion-simbolo {
    min-width: 40px;
    font-weight: 700;
    color: var(--primary);
}

/* Controles de presión */
.presion-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.presion-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.presion-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.presion-dato.presion-principal {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
}

.presion-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.presion-dato.presion-principal .presion-label {
    color: rgba(255,255,255,0.9);
}

.presion-valor {
    font-size: 1.25rem;
    font-weight: 700;
}

.presion-valor-sm {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.presion-dato.presion-principal .presion-valor {
    color: white;
}

/* ============================================
   RESPONSIVE PARTE 3-B
   ============================================ */

@media (max-width: 767.98px) {
    .arco-item,
    .superficie-item,
    .presion-item {
        flex-direction: column;
        text-align: center;
        gap: 0.25rem;
    }
    
    .arco-simbolo,
    .superficie-simbolo,
    .presion-simbolo {
        min-width: unset;
    }
    
    .trabajo-caso {
        flex-direction: column;
        text-align: center;
        gap: 0.25rem;
    }
    
    .arco-controles,
    .superficie-controles,
    .trabajo-controles,
    .presion-controles {
        margin-bottom: 1rem;
    }
}   /* ============================================
   TEMA 3.9 - CENTRO DE MASA
   ============================================ */

/* Visual del centro de masa */
.centromasa-visual {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

.placa {
    width: 120px;
    height: 80px;
    background: linear-gradient(135deg, #94a3b8 0%, #64748b 100%);
    border-radius: 10px 40px 10px 10px;
    position: relative;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.punto-cm {
    position: absolute;
    top: 50%;
    left: 40%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    color: #ef4444;
    font-weight: bold;
}

/* Explicación CM */
.cm-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.cm-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.cm-simbolo {
    min-width: 60px;
    font-weight: 700;
    color: var(--primary);
}

/* Controles CM */
.cm-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.cm-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.cm-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.cm-dato.cm-principal {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
    margin-bottom: 0;
}

.cm-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.cm-dato.cm-principal .cm-label {
    color: rgba(255,255,255,0.9);
}

.cm-valor {
    font-size: 1.25rem;
    font-weight: 700;
}

.cm-valor-sm {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.cm-dato.cm-principal .cm-valor {
    color: white;
}

/* ============================================
   TEMA 3.10 - MOMENTOS DE INERCIA
   ============================================ */

/* Visual de inercia */
.inercia-visual {
    position: relative;
    height: 100px;
    margin: 1.5rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.eje-rotacion {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: #64748b;
    transform: translateX(-50%);
}

.masa {
    position: absolute;
    font-size: 2rem;
    color: var(--primary);
}

.masa.masa-cerca {
    left: calc(50% + 15px);
    top: 30%;
}

.masa.masa-lejos {
    left: calc(50% + 60px);
    top: 60%;
}

.inercia-labels {
    position: absolute;
    bottom: -10px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Explicación inercia */
.inercia-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.inercia-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.inercia-simbolo {
    min-width: 40px;
    font-weight: 700;
    color: var(--primary);
}

/* Controles inercia */
.inercia-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.inercia-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.inercia-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.inercia-dato.inercia-principal {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: white;
    margin-bottom: 0;
}

.inercia-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.inercia-dato.inercia-principal .inercia-label {
    color: rgba(255,255,255,0.9);
}

.inercia-valor {
    font-size: 1.5rem;
    font-weight: 700;
}

.inercia-valor-sm {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.inercia-dato.inercia-principal .inercia-valor {
    color: white;
}

/* ============================================
   TEMA 3.11 - APLICACIONES EN ECONOMÍA
   ============================================ */

/* Visual economía */
.economia-visual {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
}

.curva-demanda {
    width: 150px;
    height: 100px;
    position: relative;
    border-left: 3px solid #64748b;
    border-bottom: 3px solid #64748b;
}

.area-excedente {
    position: absolute;
    top: 10px;
    left: 5px;
    width: 0;
    height: 0;
    border-left: 60px solid rgba(34, 197, 94, 0.4);
    border-top: 40px solid transparent;
    border-bottom: 0 solid transparent;
}

.linea-precio {
    position: absolute;
    top: 50px;
    left: 0;
    right: 10px;
    height: 2px;
    background: #ef4444;
}

/* Explicación economía */
.economia-explicacion {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.economia-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.economia-simbolo {
    min-width: 40px;
    font-weight: 700;
    color: var(--primary);
}

/* Controles economía */
.economia-controles {
    background: white;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.param-grupo {
    margin-bottom: 0.75rem;
}

.param-valor {
    text-align: center;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

.economia-resultado {
    border-top: 1px solid #e2e8f0;
    padding-top: 1rem;
}

.economia-dato {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
}

.economia-dato.eco-consumidor {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
}

.economia-dato.eco-productor {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    margin-bottom: 0;
}

.economia-label {
    font-size: 0.85rem;
    font-weight: 600;
}

.economia-dato.eco-consumidor .economia-label,
.economia-dato.eco-productor .economia-label {
    color: rgba(255,255,255,0.9);
}

.economia-valor {
    font-size: 1.25rem;
    font-weight: 700;
}

.economia-valor-sm {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.economia-dato.eco-consumidor .economia-valor,
.economia-dato.eco-productor .economia-valor {
    color: white;
}

/* ============================================
   RESPONSIVE PARTE 3-C
   ============================================ */

@media (max-width: 767.98px) {
    .cm-item,
    .inercia-item,
    .economia-item {
        flex-direction: column;
        text-align: center;
        gap: 0.25rem;
    }
    
    .cm-simbolo,
    .inercia-simbolo,
    .economia-simbolo {
        min-width: unset;
    }
    
    .cm-controles,
    .inercia-controles,
    .economia-controles {
        margin-bottom: 1rem;
    }
    
    .inercia-visual {
        transform: scale(0.85);
    }
    
    .inercia-labels {
        font-size: 0.65rem;
    }
    
    .param-grupo {
        margin-bottom: 0.5rem;
    }
}