/* ================================
   PÁGINA PRINCIPIOS TÉCNICOS
   ================================ */

.principios-tecnicos {
    padding: 4rem 2rem;
}

.principios-tecnicos h1 {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary);
}

.principios-tecnicos .subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 4rem;
}

/* PRINCIPIOS CARDS */
.principio-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    padding: 3rem;
    margin-bottom: 3rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.principio-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    transition: var(--transition);
    z-index: 0;
}

.principio-card:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(0, 212, 255, 0.5);
    transform: translateY(-5px);
}

.principio-card:hover::before {
    right: -30%;
    top: -30%;
}

.principio-card.alternado {
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.05), rgba(0, 212, 255, 0.05));
}

.principio-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.principio-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    color: var(--primary);
    flex: 1;
    margin-right: 2rem;
}

.principio-tag {
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

.principio-content {
    position: relative;
    z-index: 1;
}

.principio-text h3 {
    color: var(--primary);
    font-size: 1.3rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.principio-text h3:first-child {
    margin-top: 0;
}

.principio-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

/* GRIDS ESPECIALIZADAS */
.principio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.altura-especificacion {
    background: rgba(255, 255, 255, 0.7);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--accent);
    transition: var(--transition);
}

.altura-especificacion:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
}

.altura-especificacion h4 {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.altura-especificacion .valor-tech {
    font-size: 1.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.altura-especificacion .descripcion {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* MOVIMIENTO GRID */
.movimiento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.aspecto-movimiento {
    background: rgba(255, 255, 255, 0.7);
    padding: 1.5rem;
    border-radius: 12px;
    transition: var(--transition);
}

.aspecto-movimiento.full-width {
    grid-column: 1 / -1;
}

.aspecto-movimiento h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.error-box,
.success-box,
.spec-box {
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.error-box {
    background: linear-gradient(135deg, rgba(244, 67, 54, 0.1), rgba(229, 115, 115, 0.1));
    border-left: 4px solid #f44336;
    color: #c62828;
}

.success-box {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1), rgba(103, 212, 162, 0.1));
    border-left: 4px solid #4caf50;
    color: #2e7d32;
}

.spec-box {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(243, 156, 18, 0.1));
    border-left: 4px solid var(--accent);
    color: var(--text-primary);
}

/* AGUA GRID */
.agua-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.agua-item {
    background: rgba(255, 255, 255, 0.7);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 2px dashed rgba(0, 212, 255, 0.3);
    transition: var(--transition);
    cursor: pointer;
}

.agua-item:hover {
    border-color: rgba(0, 212, 255, 0.6);
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-5px);
}

.agua-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.agua-item h4 {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.agua-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ALMACENAJE COMPARATIVA */
.almacenaje-comparativa {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.metodo {
    background: rgba(255, 255, 255, 0.7);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid #f44336;
}

.metodo.mejorado {
    border-left-color: #4caf50;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.05), rgba(103, 212, 162, 0.05));
}

.metodo h4 {
    color: var(--primary);
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    font-weight: 700;
}

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

.metodo li {
    padding: 0.6rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding-left: 1.5rem;
    position: relative;
}

.metodo li:last-child {
    border-bottom: none;
}

.metodo li::before {
    content: '•';
    position: absolute;
    left: 0;
    font-size: 1.5rem;
    color: var(--accent);
}

.metodo.mejorado li::before {
    color: #4caf50;
    content: '✓';
    font-weight: 900;
}

.almacenaje-nota {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(243, 156, 18, 0.1));
    border: 2px dashed rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    color: var(--text-primary);
    line-height: 1.8;
}

/* INGENIERÍA GRID */
.ingenieria-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.ing-sistema {
    background: rgba(255, 255, 255, 0.7);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    position: relative;
    border: 2px solid rgba(0, 212, 255, 0.2);
    transition: var(--transition);
}

.ing-sistema:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-5px);
}

.ing-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.5rem;
    margin: 0 auto 1.2rem;
}

.ing-sistema h4 {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.ing-sistema p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* SUPERFICIES GRID */
.superficies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.superficie {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(243, 156, 18, 0.08));
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.superficie:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(243, 156, 18, 0.15));
    border-color: rgba(0, 212, 255, 0.5);
    transform: translateY(-5px);
}

.sup-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.superficie h4 {
    color: var(--primary);
    font-size: 1rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.superficie p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.nota-superficies {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1), rgba(103, 212, 162, 0.1));
    border: 2px dashed #4caf50;
    border-radius: 12px;
    padding: 1.5rem;
    color: #2e7d32;
    line-height: 1.8;
    text-align: center;
}

/* CTA FINAL */
.cta-principios {
    background: linear-gradient(135deg, var(--primary) 0%, var(--neutral-dark) 100%);
    color: white;
    padding: 4rem;
    border-radius: 20px;
    text-align: center;
    margin-top: 4rem;
    position: relative;
    overflow: hidden;
}

.cta-principios::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: gradientShift 15s ease infinite;
}

.cta-principios h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta-principios p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.cta-principios .btn {
    position: relative;
    z-index: 1;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .principios-tecnicos h1 {
        font-size: 2.2rem;
    }

    .principio-header {
        flex-direction: column;
        gap: 1rem;
    }

    .principio-header h2 {
        margin-right: 0;
    }

    .almacenaje-comparativa {
        grid-template-columns: 1fr;
    }

    .cta-principios {
        padding: 2rem;
    }

    .cta-principios h2 {
        font-size: 1.8rem;
    }
}