/* ================================
   Site Header
   ================================ */

.site-header {
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-header);
}

/* backdrop-filter lives on .navbar, not .site-header: applying it to the
   header would create a containing block for the offcanvas's position:fixed
   (it's a descendant of <header>), trapping it inside the header's box and
   causing a phantom vertical scrollbar. */
.site-header .navbar {
    min-height: var(--header-height);
    padding-block: 0;
    background-color: rgba(248, 248, 246, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.is-scrolled .navbar {
    background-color: rgba(248, 248, 246, 0.97);
    box-shadow: var(--shadow-sm);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

/* ================================
   Brand
   ================================ */

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: 0;
    padding: 0;
    text-decoration: none;
}

/* ================================
   Brand Logo
   ================================ */

.brand-logo {
    display: block;



    object-fit: contain;

    flex-shrink: 0;

    transition:
        transform var(--transition-fast),
        opacity var(--transition-fast);
}

.navbar-brand:hover .brand-logo {
    transform: scale(1.05);
    opacity: 0.9;
}

.brand-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    letter-spacing: -0.01em;
}



.brand-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    letter-spacing: -0.01em;
}

/* ================================
   Desktop Navigation
   ================================ */

.navbar-collapse {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

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

.site-header .nav-link {
    position: relative;
    padding: var(--space-2) var(--space-3) !important;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.site-header .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    right: var(--space-3);
    left: var(--space-3);
    height: 2px;
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-normal);
}

.site-header .nav-link:hover {
    color: var(--color-text);
}

.site-header .nav-link:hover::after {
    transform: scaleX(0.5);
}

.site-header .nav-link.active {
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-semibold);
}

.site-header .nav-link.active::after {
    transform: scaleX(1);
}

/* ================================
   Buttons
   ================================ */

.btn-clinic-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border: 1px solid transparent;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.btn-clinic-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-clinic-primary:active {
    transform: translateY(0);
}

/* ================================
   Mobile Toggler
   ================================ */

.navbar-toggler {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.navbar-toggler:hover {
    background-color: var(--color-primary-light);
}

.navbar-toggler-icon {
    width: 1.4em;
    height: 1.4em;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgb(23, 23, 23)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ================================
   Mobile Offcanvas
   ================================ */

.mobile-offcanvas {
    width: min(22rem, 85vw);
    background-color: var(--color-surface-light);
    border-inline-start: 1px solid var(--color-border);
}

.mobile-offcanvas .offcanvas-header {
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu-brand {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
}

.mobile-menu-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.mobile-nav {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-3) !important;
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast), padding-inline-start var(--transition-fast);
}

.mobile-nav .nav-link:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.mobile-nav .nav-link.active {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-semibold);
}

.mobile-nav-arrow {
    color: var(--color-gold);
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.mobile-nav .nav-link:hover .mobile-nav-arrow,
.mobile-nav .nav-link.active .mobile-nav-arrow {
    opacity: 1;
    transform: translateX(0);
}

.offcanvas-footer {
    margin-top: auto;
    border-top: 1px solid var(--color-border);
}

/* ================================
   Responsive
   ================================ */

@media (max-width: 991.98px) {
    .site-header .navbar {
        min-height: calc(var(--header-height) - 1rem);
    }
}

/* ================================
   Reduced Motion
   ================================ */

@media (prefers-reduced-motion: reduce) {
    .site-header,
    ,
    .site-header .nav-link::after,
    .btn-clinic-primary,
    .mobile-nav .nav-link,
    .mobile-nav-arrow {
        transition: none !important;
    }

    .navbar-brand:hover  {
        transform: none;
    }
}