/* 
 * Estilos Modernos para Botones - Sistema de Preinscripción IICO
 * Efectos avanzados y animaciones para mejorar la experiencia de usuario
 */

/* Efectos de partículas para botón primario */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:active::after {
    width: 300px;
    height: 300px;
}

/* Efecto de pulso para botones importantes */
@keyframes pulse {
    0% {
        box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    }
    50% {
        box-shadow: 0 4px 25px rgba(52, 152, 219, 0.5);
    }
    100% {
        box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    }
}

.btn-primary.pulse {
    animation: pulse 2s infinite;
}

/* Efecto de carga para botones */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Efectos hover mejorados */
.btn:hover {
    filter: brightness(1.05);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, #1f4e79);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #5a6268, #495057);
}

/* Efectos de focus para accesibilidad */
.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.3);
}

.nav-btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

/* Animación de entrada para botones */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.action-buttons .btn {
    animation: fadeInUp 0.6s ease-out;
}

.action-buttons .btn:nth-child(2) {
    animation-delay: 0.1s;
}

/* Efectos especiales para estados */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn:disabled:hover {
    transform: none !important;
    box-shadow: none !important;
}

/* Indicador de éxito */
.btn-success {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, #229954, #27ae60);
}

/* Indicador de error */
.btn-danger {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c0392b, #a93226);
}

/* Efectos para dispositivos táctiles */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .btn:active {
        transform: scale(0.98);
    }
    
    .nav-btn:hover {
        transform: none;
    }
    
    .nav-btn:active {
        transform: scale(0.95);
    }
}

/* Mejoras para modo oscuro (futuro) */
@media (prefers-color-scheme: dark) {
    .btn-outline {
        border-color: #4a90e2;
        color: #4a90e2;
    }
    
    .btn-outline:hover {
        background-color: #4a90e2;
        color: white;
    }
}

/* Efectos de micro-interacciones */
.btn {
    will-change: transform, box-shadow;
}

.btn:hover .fas {
    animation: iconBounce 0.6s ease;
}

@keyframes iconBounce {
    0%, 20%, 60%, 100% {
        transform: translateY(0) scale(1);
    }
    40% {
        transform: translateY(-3px) scale(1.1);
    }
    80% {
        transform: translateY(-1px) scale(1.05);
    }
}

/* Efectos de glassmorphism para navegación */
.nav-btn {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

/* Sombras dinámicas */
.btn-primary {
    box-shadow: 
        0 4px 15px rgba(52, 152, 219, 0.3),
        0 1px 3px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    box-shadow: 
        0 8px 25px rgba(52, 152, 219, 0.4),
        0 3px 10px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    box-shadow: 
        0 4px 15px rgba(108, 117, 125, 0.3),
        0 1px 3px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    box-shadow: 
        0 8px 25px rgba(108, 117, 125, 0.4),
        0 3px 10px rgba(0, 0, 0, 0.15);
}

/* Optimizaciones de rendimiento */
.btn,
.nav-btn {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Estados de carga específicos */
.btn-primary.loading {
    background: linear-gradient(135deg, #bdc3c7, #95a5a6);
    cursor: wait;
}

.btn-primary.loading::before {
    border-top-color: white;
}

/* Efectos de confirmación */
@keyframes checkmark {
    0% {
        transform: scale(0) rotate(45deg);
    }
    50% {
        transform: scale(1.2) rotate(45deg);
    }
    100% {
        transform: scale(1) rotate(45deg);
    }
}

.btn-confirmed::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.2em;
    animation: checkmark 0.6s ease;
}