/* SPINNER STYLES */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.spinner-overlay.active {
    opacity: 1;
    visibility: visible;
}

.spinner-container {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 320px;
    width: 90%;
    transform: scale(0.7);
    transition: transform 0.3s ease;
}

.spinner-overlay.active .spinner-container {
    transform: scale(1);
}

/* Spinner animado */
.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto 20px;
    position: relative;
}

.spinner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Variantes de spinner */
.spinner.dots {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 60px;
    height: 20px;
}

.spinner.dots::before,
.spinner.dots::after {
    content: '';
    position: static;
    width: 12px;
    height: 12px;
    background: #007bff;
    border-radius: 50%;
    border: none;
    animation: dotBounce 1.4s ease-in-out infinite both;
}

.spinner.dots::before {
    animation-delay: -0.32s;
}

.spinner.dots::after {
    animation-delay: -0.16s;
}

.spinner.dots .dot {
    width: 12px;
    height: 12px;
    background: #007bff;
    border-radius: 50%;
    animation: dotBounce 1.4s ease-in-out infinite both;
}

@keyframes dotBounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.spinner.pulse::before {
    border: none;
    background: #007bff;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* Mensaje del spinner */
.spinner-message {
    color: #333;
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 8px;
}

.spinner-submessage {
    color: #666;
    font-size: 14px;
    line-height: 1.4;
}

/* Variantes de color */
.spinner-overlay.success .spinner::before,
.spinner-overlay.success .spinner.dots::before,
.spinner-overlay.success .spinner.dots::after,
.spinner-overlay.success .spinner.dots .dot,
.spinner-overlay.success .spinner.pulse::before {
    border-top-color: #28a745;
    background-color: #28a745;
}

.spinner-overlay.warning .spinner::before,
.spinner-overlay.warning .spinner.dots::before,
.spinner-overlay.warning .spinner.dots::after,
.spinner-overlay.warning .spinner.dots .dot,
.spinner-overlay.warning .spinner.pulse::before {
    border-top-color: #ffc107;
    background-color: #ffc107;
}

.spinner-overlay.danger .spinner::before,
.spinner-overlay.danger .spinner.dots::before,
.spinner-overlay.danger .spinner.dots::after,
.spinner-overlay.danger .spinner.dots .dot,
.spinner-overlay.danger .spinner.pulse::before {
    border-top-color: #dc3545;
    background-color: #dc3545;
}

.spinner-close-btn {
    margin-top: 20px;
    padding: 10px 24px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: none;
}

.spinner-close-btn:hover {
    background: #0056b3;
    transform: translateY(-1px);
}

.spinner-close-btn.show {
    display: inline-block;
}

/* Responsive */
@media (max-width: 480px) {
    .spinner-container {
        padding: 30px 20px;
    }

    .demo-content {
        padding: 20px;
    }
}