/*
 * Home quick navigation (template/quick-nav.php, assets/js/quick-nav.js).
 * Modes (exposed to JS through --qn-mode):
 *   bar  (default)   sticky chip bar at the top of the main column
 *   rail (>=1872px)  vertical tiles in the left gutter, hugging the container
 *   wide (>=2144px)  rail with full labels
 * Ad safety: the Ezoic side rail (160x600) is pinned at left:0 on desktop, the
 * Ezoic anchor (up to ~100px) sits at the bottom. The rail never extends further
 * left than 184px from the viewport edge and stops ~120px above the bottom.
 */
:root {
    --sbm-header-h: 76px;   /* updated from JS (header height) */
    --sbm-qnav-bar-h: 0px;  /* updated from JS in bar mode */
}

#mainContentArea {
    position: relative;
}

#homePageSections > [id] {
    scroll-margin-top: calc(var(--sbm-header-h) + var(--sbm-qnav-bar-h) + 16px);
}

.sbm-qnav-track {
    display: contents;
}

.sbm-qnav {
    --qn-mode: bar;
    --qn-l: 40%;
    --qn-gutter: calc(var(--bs-gutter-x, 1.5rem) * 0.5);
    --qn-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
    position: sticky;
    top: var(--sbm-header-h);
    z-index: 1010; /* below the sticky header (1020) and back-to-top (1030) */
    margin: 0 calc(var(--qn-gutter) * -1) 1.75rem;
    padding: 0.55rem var(--qn-gutter);
    background: color-mix(in srgb, var(--bs-body-bg) 93%, transparent);
    -webkit-backdrop-filter: saturate(1.5) blur(12px);
    backdrop-filter: saturate(1.5) blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
[data-bs-theme="dark"] .sbm-qnav {
    --qn-l: 64%;
}
.sbm-qnav.is-stuck {
    border-bottom-color: var(--bs-border-color-translucent);
    box-shadow: 0 10px 18px -16px rgba(0, 0, 0, 0.55);
}

.sbm-qnav__item {
    --qn-accent: hsl(var(--qn-h, 212) 78% var(--qn-l));
    --qn-tint: color-mix(in srgb, var(--qn-accent) 16%, transparent);
    flex: 0 0 auto;
    scroll-snap-align: start;
}

.sbm-qnav__title {
    display: none;
}

.sbm-qnav__list {
    --qn-fade-l: 0px;
    --qn-fade-r: 0px;
    display: flex;
    gap: 0.5rem;
    margin: 0;
    padding: 2px;
    list-style: none;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 var(--qn-fade-l), #000 calc(100% - var(--qn-fade-r)), transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0, #000 var(--qn-fade-l), #000 calc(100% - var(--qn-fade-r)), transparent 100%);
}
.sbm-qnav__list::-webkit-scrollbar {
    display: none;
}
.sbm-qnav__list.can-scroll-left {
    --qn-fade-l: 28px;
}
.sbm-qnav__list.can-scroll-right {
    --qn-fade-r: 36px;
}

.sbm-qnav__link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.3rem 0.85rem 0.3rem 0.3rem;
    border: 1px solid var(--bs-border-color);
    border-radius: 999px;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s var(--qn-ease);
}
.sbm-qnav__icon {
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    width: 1.85rem;
    height: 1.85rem;
    border-radius: 50%;
    background: var(--qn-tint);
    color: var(--qn-accent);
    font-size: 0.95rem;
    transition: background-color 0.18s ease, color 0.18s ease, transform 0.25s var(--qn-ease);
}
.sbm-qnav__text--full {
    display: none;
}

.sbm-qnav__link:hover {
    border-color: var(--qn-accent);
    color: var(--bs-emphasis-color);
}
.sbm-qnav__link:hover .sbm-qnav__icon {
    transform: scale(1.08) rotate(-6deg);
}
.sbm-qnav__link:active {
    transform: scale(0.96);
}
.sbm-qnav__link:focus-visible {
    outline: 2px solid var(--qn-accent);
    outline-offset: 2px;
}
.sbm-qnav__link[aria-current="true"] {
    border-color: var(--qn-accent);
    background: var(--qn-tint);
    color: var(--bs-emphasis-color);
}
.sbm-qnav__link[aria-current="true"] .sbm-qnav__icon {
    background: var(--qn-accent);
    color: #fff;
}
[data-bs-theme="dark"] .sbm-qnav__link[aria-current="true"] .sbm-qnav__icon {
    color: #10131a;
}

@media (min-width: 768px) {
    .sbm-qnav__list {
        gap: 0.6rem;
    }
}

/* Laptop widths: the chip bar must fit 8 chips into ~830px without scrolling. */
@media (min-width: 992px) and (max-width: 1399.98px) {
    .sbm-qnav__list {
        gap: 0.4rem;
    }
    .sbm-qnav__link {
        padding-right: 0.7rem;
        font-size: 0.8125rem;
    }
    .sbm-qnav__icon {
        width: 1.65rem;
        height: 1.65rem;
        font-size: 0.85rem;
    }
}

/* ---------- Rail: left gutter, next to the container ---------- */
@media (min-width: 1872px) {
    .sbm-qnav-track {
        display: block;
        position: absolute;
        top: 0;
        bottom: 0;
        right: calc(100% + 12px);
        width: 72px;
    }
    .sbm-qnav {
        --qn-mode: rail;
        top: calc(var(--sbm-header-h) + 24px);
        margin: 0;
        padding: 0.6rem 0.35rem;
        max-height: calc(100vh - var(--sbm-header-h) - 24px - 120px);
        overflow-y: auto;
        scrollbar-width: none;
        background: var(--bs-tertiary-bg);
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
        border: 1px solid var(--bs-border-color-translucent);
        border-radius: 1.25rem;
        box-shadow: 0 18px 32px -26px rgba(0, 0, 0, 0.6);
    }
    .sbm-qnav.is-stuck {
        border-bottom-color: var(--bs-border-color-translucent);
    }
    .sbm-qnav__title {
        display: block;
        margin: 0.1rem 0 0.5rem;
        color: var(--bs-secondary-color);
        font-size: 0.625rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        text-align: center;
        text-transform: uppercase;
    }
    .sbm-qnav__list {
        flex-direction: column;
        gap: 0.2rem;
        padding: 0;
        overflow: visible;
        -webkit-mask-image: none;
        mask-image: none;
    }
    .sbm-qnav__link {
        flex-direction: column;
        justify-content: center;
        gap: 0.3rem;
        width: 100%;
        padding: 0.5rem 0.15rem 0.45rem;
        border-color: transparent;
        border-radius: 0.9rem;
        background: transparent;
        font-size: 0.6875rem;
        letter-spacing: 0.01em;
    }
    .sbm-qnav__icon {
        width: 2.3rem;
        height: 2.3rem;
        font-size: 1.1rem;
    }
    .sbm-qnav__link:hover {
        border-color: transparent;
        background: color-mix(in srgb, var(--qn-accent) 9%, transparent);
    }
    .sbm-qnav__link[aria-current="true"] {
        border-color: transparent;
        background: var(--qn-tint);
        box-shadow: inset 3px 0 0 var(--qn-accent);
    }
}

/* ---------- Wide rail: full labels (184 ad reserve + 204 rail + 12 gap) ---------- */
@media (min-width: 2144px) {
    .sbm-qnav-track {
        width: 204px;
    }
    .sbm-qnav {
        --qn-mode: wide;
        padding: 0.75rem 0.5rem;
    }
    .sbm-qnav__title {
        margin: 0.1rem 0.5rem 0.6rem;
        font-size: 0.6875rem;
        text-align: left;
    }
    .sbm-qnav__link {
        flex-direction: row;
        justify-content: flex-start;
        gap: 0.6rem;
        padding: 0.4rem 0.5rem;
        font-size: 0.875rem;
        letter-spacing: 0;
        white-space: normal;
        text-align: left;
    }
    .sbm-qnav__icon {
        width: 2rem;
        height: 2rem;
        font-size: 1rem;
    }
    .sbm-qnav__text--short {
        display: none;
    }
    .sbm-qnav__text--full {
        display: inline;
    }
}

@media (prefers-reduced-motion: reduce) {
    .sbm-qnav,
    .sbm-qnav__link,
    .sbm-qnav__icon {
        transition: none;
    }
    .sbm-qnav__link:hover .sbm-qnav__icon {
        transform: none;
    }
}

@media print {
    .sbm-qnav-track {
        display: none;
    }
}