/* Primary navbar — shared across every page (loads after page CSS) */

:root {
    --nav-bg: #2563eb;
    --nav-line: rgba(15, 23, 42, 0.1);
    --nav-ink: #ffffff;
    --nav-ink-muted: rgba(255, 255, 255, 0.82);
    --nav-hover: rgba(255, 255, 255, 0.12);
    --nav-active-line: rgba(255, 255, 255, 0.95);
    --nav-height: 72px;
    --nav-font-scale: 1.2;
    --nav-font: "Source Sans 3", system-ui, -apple-system, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

.app-navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    font-family: var(--nav-font);
    font-size: calc(1.0625rem * var(--nav-font-scale));
    line-height: 1.3;
    color: var(--nav-ink);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-line);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.08);
    isolation: isolate;
}

.app-navbar a {
    font-family: inherit;
    line-height: inherit;
}

.app-navbar__inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 clamp(20px, 5vw, 40px);
    min-height: var(--nav-height);
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    column-gap: clamp(16px, 3vw, 32px);
}

.app-navbar__brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: var(--nav-ink);
    font-weight: 600;
    font-size: calc(1.25rem * var(--nav-font-scale));
    letter-spacing: -0.025em;
    flex-shrink: 0;
    transition: opacity 0.2s ease;
}

.app-navbar__brand:hover {
    opacity: 0.88;
}

.app-navbar__logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
}

.app-navbar__mark {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: inline-grid;
    place-items: center;
    font-size: calc(0.75rem * var(--nav-font-scale));
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.95);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.28);
}

.app-navbar__nav {
    min-width: 0;
    overflow: hidden;
}

.app-navbar__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 4px;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    scroll-padding-inline: 8px;
}

.app-navbar__list::-webkit-scrollbar {
    display: none;
}

.app-navbar__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--nav-ink-muted);
    font-size: calc(1rem * var(--nav-font-scale));
    font-weight: 500;
    letter-spacing: 0.01em;
    white-space: nowrap;
    border: none;
    transition: color 0.2s ease, background 0.2s ease;
}

.app-navbar__link svg {
    flex-shrink: 0;
    width: calc(20px * var(--nav-font-scale));
    height: calc(20px * var(--nav-font-scale));
    opacity: 0.55;
    transition: opacity 0.2s ease;
}

.app-navbar__link:hover {
    color: var(--nav-ink);
    background: var(--nav-hover);
}

.app-navbar__link:hover svg {
    opacity: 0.85;
}

.app-navbar__link.is-active {
    color: var(--nav-ink);
}

.app-navbar__link.is-active svg {
    opacity: 0.95;
}

.app-navbar__link.is-active::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 9px;
    height: 1px;
    background: var(--nav-active-line);
    border-radius: 1px;
    opacity: 0.9;
}

.app-navbar__actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.app-navbar__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 26px;
    border-radius: 8px;
    font-size: calc(1rem * var(--nav-font-scale));
    font-weight: 500;
    letter-spacing: 0.01em;
    text-decoration: none;
    color: #fff;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.35);
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.app-navbar__cta:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
}

@media (max-width: 1280px) {
    .app-navbar__link {
        padding: 12px 14px;
        font-size: calc(0.9375rem * var(--nav-font-scale));
    }

    .app-navbar__link svg {
        width: calc(18px * var(--nav-font-scale));
        height: calc(18px * var(--nav-font-scale));
    }
}

/* ── Mobile menu toggle (hamburger) ───────────────────────── */
.app-navbar__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    margin: 0;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 8px;
    background: transparent;
    color: var(--nav-ink);
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.app-navbar__toggle:hover {
    background: var(--nav-hover);
}

.app-navbar__toggle:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.app-navbar__toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 1px;
    background: currentColor;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

.app-navbar.is-menu-open .app-navbar__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.app-navbar.is-menu-open .app-navbar__toggle-bar:nth-child(2) {
    opacity: 0;
}

.app-navbar.is-menu-open .app-navbar__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Drawer + backdrop (mobile only) */
.app-navbar__backdrop {
    display: none;
    position: fixed;
    inset: 0;
    top: var(--nav-height);
    z-index: 98;
    background: rgba(15, 23, 42, 0.45);
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

.app-navbar__drawer {
    display: none;
}

@media (max-width: 900px) {
    .app-navbar__inner {
        grid-template-columns: 1fr auto auto;
        column-gap: 12px;
    }

    .app-navbar__nav--desktop {
        display: none;
    }

    .app-navbar__actions--desktop {
        display: none;
    }

    .app-navbar__toggle {
        display: inline-flex;
        grid-column: 2;
    }

    .app-navbar__backdrop {
        display: block;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.25s ease, visibility 0.25s ease;
    }

    .app-navbar__backdrop:not([hidden]) {
        opacity: 1;
        visibility: visible;
    }

    .app-navbar__drawer {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--nav-height);
        right: 0;
        bottom: 0;
        z-index: 99;
        width: min(100%, 320px);
        max-width: 100%;
        padding: 1rem 1.25rem 1.5rem;
        background: var(--nav-bg);
        border-left: 1px solid var(--nav-line);
        box-shadow: -8px 0 32px rgba(15, 23, 42, 0.2);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        transform: translateX(100%);
        visibility: hidden;
        pointer-events: none;
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
            visibility 0.28s ease;
    }

    .app-navbar.is-menu-open .app-navbar__drawer {
        transform: translateX(0);
        visibility: visible;
        pointer-events: auto;
    }

    .app-navbar__list--mobile {
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 2px;
        overflow: visible;
        width: 100%;
    }

    .app-navbar__nav--mobile .app-navbar__link {
        width: 100%;
        padding: 14px 16px;
        font-size: calc(1.0625rem * var(--nav-font-scale));
        border-radius: 10px;
    }

    .app-navbar__nav--mobile .app-navbar__link.is-active::after {
        left: 16px;
        right: 16px;
        bottom: 8px;
    }

    .app-navbar__drawer-actions {
        margin-top: auto;
        padding-top: 1.25rem;
        border-top: 1px solid var(--nav-line);
    }

    .app-navbar__drawer-actions .app-navbar__cta {
        display: flex;
        width: 100%;
        padding: 14px 20px;
        font-size: calc(1.0625rem * var(--nav-font-scale));
    }
}

@media (max-width: 720px) {
    .app-navbar__brand span:not(.app-navbar__mark) {
        max-width: 10rem;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

body.is-nav-menu-open {
    overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
    .app-navbar__toggle-bar,
    .app-navbar__drawer,
    .app-navbar__backdrop {
        transition: none;
    }
}