/**
 * Navigation Components
 * Header, footer, and navigation elements
 */

/* Navigation base styles */
.nav {
    display: flex;
    flex-wrap: wrap;
    padding-left: 0;
    margin-bottom: 0;
    list-style: none;
}

.nav-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--qk-accent-blue);
    text-decoration: none;
    transition: color var(--transition-normal);
    border-radius: var(--border-radius-sm);
}

/* interactive states follow base .nav-link */
.nav-link:hover,
.nav-link:focus {
    color: var(--qk-accent-orange);
    background-color: rgb(230 151 90 / 10%);
}

/* Navigation variants */
.nav-pills .nav-link {
    border-radius: var(--border-radius-full);
}

/* Navigation tabs (structure) */
.nav-tabs .nav-link {
    border: 1px solid transparent;
    border-top-left-radius: var(--border-radius-md);
    border-top-right-radius: var(--border-radius-md);
}

/* Tabs active state */
.nav-tabs .nav-link.active {
    color: var(--qk-accent-blue);
    background-color: var(--white);
    border-color: var(--medium-gray) var(--medium-gray) var(--white);
}

/* Pills active state */
.nav-pills .nav-link.active {
    color: var(--white);
    background-color: var(--qk-accent-blue);
}


/* Variant/state groups complete */

/* End navigation variants */

/* Navigation justified */
.nav-justified {
    width: 100%;
}

.nav-justified .nav-item {
    flex: 1 1 auto;
    text-align: center;
}

.nav-justified .nav-link {
    margin-bottom: 5px;
}

/* Navigation fill */
.nav-fill .nav-item {
    flex: 1 1 auto;
    text-align: center;
}

.nav-fill .nav-link {
    width: 100%;
}

/* pills active states already declared above */

/* Navigation vertical */
.nav-vertical {
    flex-direction: column;
}

.nav-vertical .nav-item {
    width: 100%;
}

.nav-vertical .nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
}

/* nav-tabs hover/focus already declared above */

/* Breadcrumb navigation */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    list-style: none;
    background-color: var(--light-gray);
    border-radius: var(--border-radius-md);
}

.breadcrumb-item {
    display: flex;
}

.breadcrumb-item + .breadcrumb-item::before {
    display: inline-block;
    padding-right: var(--spacing-md);
    padding-left: var(--spacing-md);
    color: var(--medium-gray);
    content: "/";
}

.breadcrumb-item.active {
    color: var(--qk-accent-blue);
}

/* Header styles */

/* Align the global header with the hero's blue gradient treatment for visual continuity. */
.header {
    background: linear-gradient(135deg, rgb(15 29 56 / 95%) 0%, rgb(12 43 94 / 92%) 100%);
    box-shadow: 0 12px 30px rgb(8 16 32 / 40%);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.header .navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

/* Brand mark stays bright against dark header background. */
.header .navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--white);
    text-decoration: none;
}

.header .navbar-brand:hover {
    color: var(--qk-accent-orange);
}

.header .navbar-nav {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.header .navbar-nav .nav-item {
    margin-left: var(--spacing-lg);
}

/* Navigation links adopt lighter text with subtle translucency for readability. */
.header .navbar-nav .nav-link {
    color: rgb(224 231 245 / 88%);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
}

/* header nav interactive states */

/* Hover states keep the amber accent but over a translucent navy highlight. */
.header .navbar-nav .nav-link:hover,
.header .navbar-nav .nav-link:focus {
    color: var(--qk-accent-orange);
    background-color: rgb(12 61 144 / 35%);
}

.header .navbar-nav .nav-link.active {
    color: var(--white);
    background-color: rgb(10 53 118 / 45%);
}

/* Footer styles */

/* Footer mirrors the hero palette to frame pages with the same blue spectrum. */
.footer {
    background: linear-gradient(180deg, rgb(10 36 80 / 97%) 0%, rgb(6 20 46 / 97%) 100%);
    color: rgb(224 231 245 / 92%);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-3xl);
    box-shadow: 0 -12px 30px rgb(8 16 32 / 45%);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.footer .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer .footer-section h3 {
    color: var(--qk-accent-orange);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.footer .footer-section p,
.footer .footer-section li {
    color: var(--medium-gray);
    line-height: var(--line-height-relaxed);
}

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

.footer .footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer .footer-section a {
    color: var(--medium-gray);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer .footer-section a:hover {
    color: var(--qk-accent-orange);
}

.footer .footer-bottom {
    border-top: 1px solid var(--medium-gray);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--medium-gray);
    font-size: var(--font-size-sm);
}

/* Mobile navigation */
@media (width <= 768px) {
    .header .navbar {
        flex-direction: column;
        align-items: stretch;
    }

    .header .navbar-nav {
        flex-direction: column;
        width: 100%;
        margin-top: var(--spacing-md);
    }

    .header .navbar-nav .nav-item {
        margin-left: 0;
        margin-bottom: var(--spacing-sm);
    }

    .header .navbar-nav .nav-link {
        padding: var(--spacing-md);
        text-align: center;
    }

    .footer .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--qk-accent-blue);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    z-index: var(--z-tooltip);
}

.skip-link:focus {
    top: 6px;
}

/* Dropdown navigation */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: var(--z-dropdown);
    display: none;
    min-width: 200px;
    padding: var(--spacing-sm) 0;
    margin: 0;
    background-color: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-menu .dropdown-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--dark-gray);
    text-decoration: none;
    transition: background-color var(--transition-normal);
}

.dropdown-menu .dropdown-item:hover,
.dropdown-menu .dropdown-item:focus {
    background-color: var(--light-gray);
    color: var(--qk-accent-blue);
}

.dropdown-menu .dropdown-divider {
    height: 1px;
    margin: var(--spacing-sm) 0;
    background-color: var(--medium-gray);
}