/* ---- Hamburger (mobile only) ---------------------------------------- */

.topbar-hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    margin-right: 4px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--sidebar-fg);
    font-size: 1.25rem;
    cursor: pointer;
}

@media (max-width: 1024px) {
    .topbar-hamburger {
        display: inline-flex;
    }
}

/* ---- Container ------------------------------------------------------- */

.topbar {
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0) 100%
    ), var(--bg-topbar);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--sidebar-fg);
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--layout-width);
    margin: 0 auto;
    padding: 0 2.5rem 0 0;
}

/* ---- Left: logo block (same width as the left sidebar) -------------- */

.topbar .topbar-logo,
.topbar .topbar-logo:visited {
    display: flex;
    align-items: center;
    height: 100%;
    width: var(--left-sidebar-width);
    /* Match the left sidebar's item indentation (1.618em) so the
       wordmark sits directly above where the toctree items start. */
    padding-left: 1.618em;
    gap: 10px;
    text-decoration: none;
    color: #ffffff;
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.01em;
}

.topbar-logo span {
    padding-top: 6px;
    line-height: 1;
}

.topbar-logo img {
    height: 30px;
    width: auto;
    display: block;
}

/* ---- Right: actions cluster ----------------------------------------- */

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Visual gap between the "preferences/nav" group (Blog, theme) and the
   "repo facts" group (GitHub, version). */
.topbar-btn + .topbar-link {
    margin-left: 6px;
}

/* Square icon button base (theme-toggle button + GitHub link). FA
   icons inside scale via font-size. */
.topbar-link,
.topbar-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--sidebar-fg);
    font-size: 1.5rem;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}

/* Blog link reads as a text label, not an icon button. */
.topbar-text {
    display: inline-flex;
    align-items: center;
    height: 32px;
    padding: 0 10px;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--sidebar-fg);
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.15s, color 0.15s;
}

/* Shared hover for every actionable element in the topbar. */
.topbar-hamburger:hover,
.topbar-link:hover,
.topbar-btn:hover,
.topbar-text:hover,
.topbar-version:hover {
    background: var(--bg-hover-on-dark);
    color: #ffffff;
}

.topbar a:hover {
    text-decoration: none;
}

/* GitHub: icon + star count, expands beyond the 32px square. */
.topbar-github {
    width: auto;
    padding: 0 8px 0 6px;
    gap: 6px;
}

.topbar-stars {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    color: var(--sidebar-fg);
}

/* FontAwesome star, matching the old site exactly. */
.topbar-stars::before {
    content: "\f005";
    font-family: "Font Awesome 7 Free";
    font-weight: 900;
    font-size: 0.85em;
    opacity: 0.85;
}

.topbar-stars:empty {
    display: none;
}

/* PyPI version: tag icon + version number. */
.topbar-version {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 0 8px;
    height: 32px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    color: var(--sidebar-fg);
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}

/* FontAwesome tag, matching the old site exactly. */
.topbar-version::before {
    content: "\f02b";
    font-family: "Font Awesome 7 Free";
    font-weight: 900;
    font-size: 0.95em;
    opacity: 0.85;
}

.topbar-version:empty {
    display: none;
}

/* ---- Mobile responsive ---------------------------------------------- */

@media (max-width: 1024px) {
    .topbar-logo,
    .topbar-logo:visited {
        width: auto;
        padding-left: 0;
    }

    .topbar-inner {
        padding: 0 12px;
        justify-content: flex-start;
    }

    .topbar-actions {
        gap: 6px;
        margin-left: auto;
    }

    /* Drop the stars count + version pill once the hamburger is in
       play; the icon-only GitHub link stays. */
    .topbar-version {
        display: none;
    }

    .topbar-stars {
        display: none;
    }

    .topbar-github {
        padding: 0 6px;
    }
}

@media (max-width: 600px) {
    .topbar-text {
        padding: 0 6px;
        font-size: 0.95rem;
    }
}

/* Touch devices: meet the 44px minimum tap target (WCAG 2.5.5). */
@media (pointer: coarse) {
    .topbar-link,
    .topbar-btn,
    .topbar-hamburger {
        width: 44px;
        height: 44px;
    }

    .topbar-text,
    .topbar-version {
        height: 44px;
    }
}