/* ==========================================================================
   Frontend Header & Navbar
   Loaded after style.css / responsive.css, so it intentionally overrides the
   header + navbar rules of the base theme.
   Layout: [top bar] > [brand bar: logo left + school name right, centered]
           > [navbar: centered menu, sticky, off-canvas sidebar on mobile]
   ========================================================================== */

:root {
    /* Overridden per branch by the theme options at /frontend/setting.
       The two text colours follow the chosen background's brightness. */
    --thm-header-bg: #fff;
    --thm-header-text: var(--thm-text);
    --thm-header-subtext: var(--thm-secondary-text);
    --thm-display-font: 'Arial Narrow', 'Helvetica Neue', sans-serif;
}


/* Brand Bar ------------------------------------------------------------- */

.brand-bar {
    background: var(--thm-header-bg, #fff);
    padding: 18px 0;
    text-align: center;
}

.brand-bar-inner {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: clamp(10px, 2.2vw, 24px);
    max-width: 100%;
    text-align: left;
    text-decoration: none;
}

.brand-bar-inner:hover,
.brand-bar-inner:focus {
    text-decoration: none;
}

.brand-logo {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
}

/* Footer ----------------------------------------------------------------- */

/* Centre the footer columns as a group: each one sizes to its content and the
   block sits in the middle of the row rather than every column being a fixed
   third of the width. */
@media (min-width: 768px) {
    .footer-area > .container > .row {
        justify-content: center;
        column-gap: 20px;
    }
    .footer-area > .container > .row > [class*="col-"] {
        flex: 0 1 auto;
        width: auto;
        max-width: 32%;
    }
}

/* Only widen the gap where there is room for it - at tablet width the three
   columns would wrap onto a second line. */
@media (min-width: 992px) {
    .footer-area > .container > .row {
        column-gap: 60px;
    }
}

/* Footer link lists fill a column six items deep before starting the next one.
   The base theme floats every item at 50%, which halves the list and reads left
   to right; CSS columns fill top to bottom instead. */
.footer-area .quick-links {
    column-count: 1;
    column-gap: 30px;
}

.footer-area .quick-links li {
    width: auto;
    float: none;
    break-inside: avoid;
    page-break-inside: avoid;
}

/* A second column only once there is a seventh link */
.footer-area .quick-links:has(li:nth-child(7)) {
    column-count: 2;
}

/* The footer logo sits under the address block, so it needs space above
   rather than the base theme's 40px below. */
.footer-area .footer-logo {
    margin-top: 28px;
    margin-bottom: 0;
}

/* Optional round treatment, toggled per branch at /frontend/setting */
.brand-logo img.logo-round,
.main-footer img.logo-round {
    padding: 5px;
    border-radius: 50%;
    background-color: #fff;
    aspect-ratio: 1 / 1;
    object-fit: contain;
}

.brand-logo img {
    width: auto;
    height: clamp(66px, 11vw, 116px);
    max-width: 100%;
    object-fit: contain;
    background: #fff;
    border-radius: 50%;
    padding: 4px;
}

.brand-identity {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.brand-name {
    display: block;
    color: var(--thm-header-text, var(--thm-text));
    font-family: var(--thm-display-font);
    font-size: clamp(1.3rem, 5.6vw, 2.9rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: 1px;
}

.brand-address {
    display: block;
    margin-top: 2px;
    color: var(--thm-header-subtext, var(--thm-secondary-text));
    font-family: var(--thm-display-font);
    font-size: clamp(.85rem, 2.7vw, 1.25rem);
    line-height: 1.3;
    letter-spacing: .6px;
}

/* Works on a light or a dark header, unlike a fixed hover colour */
.brand-bar-inner:hover {
    opacity: .85;
}

@media (min-width: 992px) {
    .brand-name {
        font-size: 2.9rem;
    }
    .brand-address {
        font-size: 1.25rem;
    }
}


/* Navbar Shell ---------------------------------------------------------- */

.stricky-wrap {
    position: relative;
}

.stricky {
    width: 100%;
    border-top: 1px solid rgba(0, 0, 0, .08);
    border-bottom: 1px solid rgba(0, 0, 0, .08);
}

.stricky.stricky-fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    border-top-color: transparent;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .18);
    animation: strickySlideDown .35s ease forwards;
}

@keyframes strickySlideDown {
    from { transform: translateY(-100%); }
    to   { transform: translateY(0); }
}

#nav,
#nav.navbar {
    margin: 0;
    padding: 0;
    background: none;
}

/* The bar itself is full-width; .container-md above it constrains the row */


/* Navbar Menu (lg and up) ----------------------------------------------- */

@media (min-width: 992px) {
    #mainNav.offcanvas {
        flex-grow: 1;
    }
    /* The menu never wraps: it stays one row and scrolls sideways instead.
       `width: max-content` + `margin: 0 auto` centres it while it fits and
       keeps the first items reachable once it overflows. */
    #mainNav .offcanvas-body {
        flex-grow: 1;
        padding: 0;
        overflow-x: auto;
        overflow-y: hidden;
        scrollbar-width: thin;
        scrollbar-color: rgba(0, 0, 0, .25) transparent;
        overscroll-behavior-x: contain;
        -webkit-overflow-scrolling: touch;
    }
    #mainNav .offcanvas-body::-webkit-scrollbar {
        height: 4px;
    }
    #mainNav .offcanvas-body::-webkit-scrollbar-track {
        background: transparent;
    }
    #mainNav .offcanvas-body::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, .25);
        border-radius: 4px;
    }
    #nav .navbar-nav {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: flex-start;
        width: max-content;
        max-width: none;
        margin: 0 auto;
    }
    #nav .navbar-nav > .nav-item > .nav-link {
        padding-top: 9px !important;
        padding-bottom: 9px !important;
        padding-left: 10px !important;
        padding-right: 10px !important;
        font-size: 14px;
        font-weight: 500;
        text-transform: uppercase;
        letter-spacing: .2px;
        white-space: nowrap;
    }
    #nav .navbar-nav > .nav-item + .nav-item {
        margin-left: 0;
    }
    /* The bar is a solid colour band now, so the base theme's corner brackets
       are swapped for a hover tint + active underline */
    #nav .navbar-nav > li > a:before,
    #nav .navbar-nav > li > a:after {
        content: none;
    }
    #nav .navbar-nav > .nav-item > .nav-link {
        transition: background-color .2s ease, color .2s ease;
    }
    #nav .navbar-nav > .nav-item:hover > .nav-link,
    #nav .navbar-nav > .nav-item.active > .nav-link {
        background-color: rgba(0, 0, 0, .06);
    }
    #nav .navbar-nav > .nav-item.active > .nav-link {
        box-shadow: inset 0 -2px 0 var(--thm-primary);
        font-weight: 600;
    }
    /* The scrolling menu is a clipping container, so dropdowns are taken out
       of it: custom.js writes their viewport coordinates on hover. */
    #nav .dropdown-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: auto;
        margin: 0;
        border-top-width: 3px;
        transform: translateY(10px);
    }
    #nav li.dropdown:hover > .dropdown-menu,
    #nav li.dropdown .dropdown-menu:hover {
        top: 0;
        transform: translateY(0);
    }
}


/* Hamburger (below lg) --------------------------------------------------- */

@media (min-width: 992px) {
    #nav .navbar-toggler {
        display: none;
    }
}

@media (max-width: 991.98px) {
    #nav .navbar-toggler {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 12px !important;
        border: 1px solid rgba(0, 0, 0, .15);
        border-radius: var(--thm-radius);
        line-height: 1;
    }

    #nav .navbar-toggler .toggler-text {
        font-size: 14px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: .5px;
        color: #313131;
    }

    #nav .navbar-toggler:hover .toggler-text {
        color: var(--thm-primary);
    }
}


/* Off-canvas Sidebar (below lg) ------------------------------------------ */

@media (max-width: 991.98px) {
    #nav.navbar {
        padding: 5px 0;
    }

    #mainNav.offcanvas {
        width: 290px;
        max-width: 85vw;
        background-color: #fff;
    }

    #mainNav .offcanvas-header {
        align-items: center;
        gap: 10px;
        padding: 16px 18px;
        border-bottom: 1px solid #eee;
        background-color: var(--thm-primary);
    }

    #mainNav .offcanvas-title {
        color: #fff;
        font-size: 15px;
        font-weight: 600;
        line-height: 1.3;
    }

    #mainNav .offcanvas-header .btn-close {
        margin: 0 0 0 auto;
        filter: invert(1) grayscale(100%) brightness(200%);
        opacity: .9;
    }

    #mainNav .offcanvas-body {
        padding: 0;
        overflow-y: auto;
    }

    #nav .navbar-nav {
        width: 100%;
        flex-direction: column;
    }

    #nav .navbar-nav > .nav-item {
        width: 100%;
        border-bottom: 1px solid #eee;
    }

    #nav .navbar-nav > .nav-item > .nav-link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 13px 18px;
        font-size: 15px;
    }

    #nav .navbar-nav > .nav-item.active > .nav-link {
        color: var(--thm-primary);
        font-weight: 600;
    }

    /* Submenus behave as accordions instead of hover dropdowns */
    #nav .navbar-nav .dropdown-menu {
        position: static !important;
        display: none;
        float: none;
        width: 100%;
        min-width: 0;
        top: auto;
        opacity: 1;
        visibility: visible;
        border: none;
        border-top: 1px solid #eee;
        border-radius: 0;
        box-shadow: none !important;
        background-color: #fafafa;
        transition: none;
    }

    #nav .navbar-nav > .nav-item.submenu-open > .dropdown-menu {
        display: block;
    }

    #nav .navbar-nav > .nav-item.submenu-open > .nav-link .arrow:after {
        transform: rotate(180deg);
    }

    #nav .dropdown-menu > .dropdown-item {
        padding: 11px 18px 11px 34px;
        border-bottom: 1px solid #eee;
        white-space: normal;
    }

    #nav .dropdown-menu > .dropdown-item:last-of-type {
        border-bottom: 0;
    }

    #nav .dropdown-menu a.dropdown-item:before {
        left: 18px;
    }

    /* Enlarged tap target for the submenu caret */
    #nav .navbar-nav > .nav-item.dropdown > .nav-link .arrow {
        padding: 12px 10px;
        margin: -12px -10px -12px 10px;
    }

    #nav .navbar-nav > .nav-item.dropdown > .nav-link .arrow:after {
        margin-left: 0;
        transition: transform .25s ease;
    }

    #nav .navbar-nav > .nav-item.m-login {
        border-bottom: 0;
        padding: 16px 18px;
    }
}