/* ===== FONDO CON EFECTO MÁQUINA ===== */
/* Fondo animado que se adapta a los temas claro y oscuro */

/* Contenedor del fondo de máquina */
.machine-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}



/* Efecto de circuitos */
.circuit-lines {
    position: absolute;
    width: 100%;
    height: 100%;
}

.circuit-line {
    position: absolute;
    background: var(--circuit-color);
    opacity: var(--circuit-opacity);
    animation: circuitFlow var(--circuit-speed) linear infinite;
}

.circuit-line.horizontal {
    height: 2px;
    width: 100px;
}

.circuit-line.vertical {
    width: 2px;
    height: 100px;
}

.circuit-line.diagonal {
    height: 2px;
    width: 140px;
    transform: rotate(45deg);
}

/* Efecto de partículas flotantes */
.machine-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--particle-color);
    border-radius: 50%;
    opacity: var(--particle-opacity);
    animation: float var(--float-speed) ease-in-out infinite;
}

/* Efecto de ondas de energía */
.energy-waves {
    position: absolute;
    width: 100%;
    height: 100%;
}

.energy-wave {
    position: absolute;
    border: 2px solid var(--wave-color);
    border-radius: 50%;
    opacity: var(--wave-opacity);
    animation: expand var(--wave-speed) ease-out infinite;
}

/* Variables CSS para tema claro */
[data-theme="light"] {
    --circuit-color: #388E3C;
    --circuit-opacity: 0.4;
    --particle-color: #FF6F00;
    --particle-opacity: 0.6;
    --wave-color: #1976D2;
    --wave-opacity: 0.2;
    --circuit-speed: 15s;
    --float-speed: 8s;
    --wave-speed: 12s;
}

/* Variables CSS para tema oscuro */
[data-theme="dark"] {
    --circuit-color: #81C784;
    --circuit-opacity: 0.8;
    --particle-color: #FFCC80;
    --particle-opacity: 0.9;
    --wave-color: #90CAF9;
    --wave-opacity: 0.5;
    --circuit-speed: 20s;
    --float-speed: 10s;
    --wave-speed: 15s;
}

/* Variables CSS para tema automático (por defecto) */
:root {
    --circuit-color: #388E3C;
    --circuit-opacity: 0.4;
    --particle-color: #FF6F00;
    --particle-opacity: 0.6;
    --wave-color: #1976D2;
    --wave-opacity: 0.2;
    --circuit-speed: 15s;
    --float-speed: 8s;
    --wave-speed: 12s;
}

/* Animaciones */


@keyframes circuitFlow {
    0% { opacity: 0; transform: scale(0.8); }
    50% { opacity: var(--circuit-opacity); transform: scale(1); }
    100% { opacity: 0; transform: scale(0.8); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.3; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: var(--particle-opacity); }
}



@keyframes expand {
    0% { 
        transform: scale(0);
        opacity: var(--wave-opacity);
    }
    100% { 
        transform: scale(3);
        opacity: 0;
    }
}



/* Responsive design */
@media (max-width: 768px) {
    .circuit-line {
        opacity: calc(var(--circuit-opacity) * 0.7);
    }
    
    .particle {
        opacity: calc(var(--particle-opacity) * 0.7);
    }
    
    .energy-wave {
        opacity: calc(var(--wave-opacity) * 0.7);
    }
}

@media (max-width: 480px) {
    .machine-background {
        display: none;
    }
}

/* Efectos de hover para elementos interactivos */
.nav-link:hover ~ .machine-background .circuit-line,
.btn:hover ~ .machine-background .circuit-line {
    animation-duration: calc(var(--circuit-speed) * 0.7);
}

/* Efectos especiales para secciones activas */
.section.active ~ .machine-background .energy-wave {
    animation-duration: calc(var(--wave-speed) * 0.8);
}

/* Transiciones suaves para cambios de tema */
.machine-background * {
    transition: all 0.5s ease;
}



[data-theme="dark"] .circuit-line {
    box-shadow: 0 0 10px var(--circuit-color);
    filter: drop-shadow(0 0 5px var(--circuit-color));
}

[data-theme="dark"] .particle {
    box-shadow: 0 0 15px var(--particle-color);
    filter: drop-shadow(0 0 8px var(--particle-color));
}

[data-theme="dark"] .energy-wave {
    box-shadow: 0 0 20px var(--wave-color);
    filter: drop-shadow(0 0 10px var(--wave-color));
}

/* Efectos de profundidad */
.circuit-line { z-index: 1; }
.particle { z-index: 2; }
.energy-wave { z-index: 3; }