/* ==========================================================================
   Kurs-Navbar (Layer 1 / Layer 2)
   Ersetzt die Standard-Navbar auf Kurs-Seiten (Layout: course.hbs)
   ========================================================================== */

.course-navbar-outer {
    position: relative;
    z-index: 50;
    background-color: var(--background-color);
    border-bottom: 1px solid var(--text-color);
}

.course-navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: max(16px, 1.1vw);
}

.course-navbar-title {
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-decoration: none;
}

.course-exit-link {
    white-space: nowrap;
}

/* --- Kapitel-Leiste --- */

.course-chapter-nav {
    border-top: 1px solid var(--text-color);
}

.course-chapter-list {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: max(6px, 0.42vw);
    list-style: none;
    margin: 0;
    padding: max(10px, 0.7vw) 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.course-chapter-list::-webkit-scrollbar {
    display: none;
}

.course-chapter-link {
    display: block;
    padding: max(6px, 0.42vw) max(14px, 0.97vw);
    border: 1px solid transparent;
    color: var(--text-color);
    text-decoration: none;
    white-space: nowrap;
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.course-chapter-link:hover {
    border-color: var(--text-color);
}

.course-chapter-link.active {
    background-color: var(--text-color);
    color: var(--background-color);
}

/* --- Responsive --- */

@media (max-width: 768px) {
    .course-navbar-title {
        display: none;
    }

    /* Bei horizontalem Scrollen nicht zentrieren, sonst werden linke Kapitel abgeschnitten */
    .course-chapter-list {
        justify-content: flex-start;
    }
}