/* Back to Top Button Styles */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-blue-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.back-to-top::before {
    content: '↑';
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Form Styles */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="search"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    transition: all var(--transition-base);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

input.error,
textarea.error {
    border-color: var(--color-error);
}

.error-message {
    display: block;
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.breadcrumbs a {
    color: var(--color-gray-600);
    transition: color var(--transition-base);
}

.breadcrumbs a:hover {
    color: var(--color-primary);
}

.breadcrumbs .separator {
    color: var(--color-gray-400);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-3xl) 0;
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-md);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    color: var(--color-gray-700);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.pagination a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination .current {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--color-white);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.badge-success {
    background: var(--color-success);
    color: var(--color-white);
}

.badge-warning {
    background: var(--color-warning);
    color: var(--color-white);
}

.badge-error {
    background: var(--color-error);
    color: var(--color-white);
}

/* Tooltips */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gray-900);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    white-space: nowrap;
    z-index: var(--z-tooltip);
    transition: all var(--transition-base);
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* Alert Messages */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-info {
    background: rgba(0, 102, 255, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

.alert-success {
    background: rgba(0, 200, 83, 0.1);
    border-color: var(--color-success);
    color: #006B2D;
}

.alert-warning {
    background: rgba(255, 179, 0, 0.1);
    border-color: var(--color-warning);
    color: #995A00;
}

.alert-error {
    background: rgba(255, 61, 0, 0.1);
    border-color: var(--color-error);
    color: #990000;
}

/* Video Responsive Container */
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.video-container iframe,
.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg,
            var(--color-gray-200) 25%,
            var(--color-gray-100) 50%,
            var(--color-gray-200) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Print Styles */
@media print {

    .site-header,
    .site-footer,
    .back-to-top,
    .mobile-menu-toggle,
    .btn {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }

    a {
        text-decoration: underline;
    }
}