/* ─── Top Navbar ─────────────────────────────────────── */
.topnav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-h, 56px);
    background: #fff;
    border-bottom: 1px solid var(--border, #e0e0e0);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 4px;
    z-index: 1000;
    box-shadow: var(--shadow-sm, 0 1px 4px rgba(0, 0, 0, .08));
}

/* ─── Brand ──────────────────────────────────────────── */
.topnav .brand {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--brand, #1a73e8);
    margin-right: auto;
    letter-spacing: -0.01em;
}

/* ─── All nav links (top level) ──────────────────────── */
.topnav>a,
.topnav .nav-item>a {
    text-decoration: none;
    color: #444;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 4px;
    transition: background var(--transition, 0.18s ease), color var(--transition, 0.18s ease);
    white-space: nowrap;
}

.topnav>a:hover,
.topnav .nav-item>a:hover {
    background: #f1f3f4;
    color: var(--brand, #1a73e8);
    text-decoration: none;
}

/* ─── Nav item wrapper (needed for dropdowns) ─────────── */
.topnav .nav-item {
    position: relative;
    display: flex;
    align-items: center;
}

/* ═══════════════════════════════════════════════════════
   LEVEL 1 DROPDOWN
═══════════════════════════════════════════════════════ */
.topnav .dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    flex-direction: column;
    background: #fff;
    min-width: 190px;
    border: 1px solid var(--border, #e0e0e0);
    border-radius: 6px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .10);
    padding: 6px 0;
    z-index: 1001;
}

/* Show ONLY direct child dropdown on hover — not deeper levels */
.topnav .nav-item:hover>.dropdown-content {
    display: flex;
}

/* Level-1 links */
.topnav .dropdown-content>a,
.topnav .dropdown-content>.has-submenu>a {
    display: block;
    padding: 9px 16px;
    font-size: 0.875rem;
    color: #333;
    font-weight: 450;
    border-radius: 0;
    transition: background var(--transition, 0.18s ease), color var(--transition, 0.18s ease);
    white-space: nowrap;
}

.topnav .dropdown-content>a:hover {
    background: #f1f3f4;
    color: var(--brand, #1a73e8);
    text-decoration: none;
}

/* ═══════════════════════════════════════════════════════
   LEVEL 2+ SUBMENU  (reusable at any depth)
═══════════════════════════════════════════════════════ */
.topnav .has-submenu {
    position: relative;
}

/* The submenu panel itself */
.topnav .has-submenu>.submenu-content {
    display: none;
    position: absolute;
    top: -6px;
    /* align with the parent item */
    left: 100%;
    flex-direction: column;
    background: #fff;
    min-width: 180px;
    border: 1px solid var(--border, #e0e0e0);
    border-radius: 6px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .10);
    padding: 6px 0;
    z-index: 1002;
}

/* Show ONLY the direct child submenu — > prevents cascade */
.topnav .has-submenu:hover>.submenu-content {
    display: flex;
}

/* Submenu links */
.topnav .submenu-content>a,
.topnav .submenu-content>.has-submenu>a {
    display: block;
    padding: 9px 16px;
    font-size: 0.875rem;
    color: #333;
    font-weight: 450;
    border-radius: 0;
    transition: background var(--transition, 0.18s ease), color var(--transition, 0.18s ease);
    white-space: nowrap;
}

.topnav .submenu-content>a:hover,
.topnav .submenu-content>.has-submenu>a:hover {
    background: #f1f3f4;
    color: var(--brand, #1a73e8);
    text-decoration: none;
}

/* Arrow indicator for items that have a submenu */
.topnav .has-submenu>a::after {
    content: " ›";
    font-size: 0.8rem;
    opacity: 0.55;
}

/* Each deeper level steps z-index up by 1 automatically
   because .submenu-content z-index increases with nesting */