.app-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(247, 245, 243, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.app-nav__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 16px 6vw;
}

.app-nav .navbar-collapse {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    flex-grow: 1;
}

/* Logo */
.logo {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--ink);
    text-decoration: none;
    padding-right: 0.5rem;
}

.logo span { color: var(--accent); }

/* Left links */
.app-nav__links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
    flex: 1;
    padding-left: 1rem;
}

.app-nav__link {
    display: block;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--muted);
    font-size: 0.93rem;
    font-weight: 500;
    transition: color 0.15s, background-color 0.15s;
    white-space: nowrap;
}

.app-nav__link:hover,
.app-nav__link.active {
    color: var(--ink);
    background: var(--accent2);
}

/* Right – auth buttons */
.app-nav__auth {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.app-nav__btn-ghost {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 50px;
    border: 1.5px solid var(--border);
    background: transparent;
    color: var(--ink);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: border-color 0.2s, background-color 0.2s;
    white-space: nowrap;
}

.app-nav__btn-ghost:hover {
    border-color: var(--accent);
    background: var(--accent2);
    color: var(--ink);
}

.app-nav__btn-primary {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 50px;
    background: var(--accent);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s;
    white-space: nowrap;
}

.app-nav__btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
}

/* Right – user menu */
.app-nav__user {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
}

/* Hamburger toggler */
.app-nav__toggler {
    display: none;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    appearance: none;
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
    padding: 6px 10px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.app-nav__toggler:hover { background: rgba(0, 0, 0, 0.03); }

.app-nav__toggler:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.app-nav__toggler-icon {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--ink);
    position: relative;
    transition: background-color 0.2s ease;
}

.app-nav__toggler-icon::before,
.app-nav__toggler-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--ink);
    transition: transform 0.2s ease, top 0.2s ease;
}

.app-nav__toggler-icon::before { top: -6px; }
.app-nav__toggler-icon::after  { top:  6px; }

.app-nav__toggler[aria-expanded="true"] .app-nav__toggler-icon {
    background: transparent;
}

.app-nav__toggler[aria-expanded="true"] .app-nav__toggler-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.app-nav__toggler[aria-expanded="true"] .app-nav__toggler-icon::after {
    top: 0;
    transform: rotate(-45deg);
}

@media (prefers-reduced-motion: reduce) {
    .app-nav__toggler-icon,
    .app-nav__toggler-icon::before,
    .app-nav__toggler-icon::after {
        transition: none;
    }
}

/* ── Responsive ── */
@media (max-width: 960px) {
    .app-nav__toggler {
        display: block;
        margin-left: auto;
    }

    .app-nav__container { flex-wrap: wrap; }

    .logo {
        display: block;
        width: fit-content;
        margin: 0 auto 0.5rem;
        padding-right: 0;
    }

    .app-nav .navbar-collapse {
        width: 100%;
        text-align: center;
    }

    .app-nav .navbar-collapse.collapse:not(.show) {
        display: none !important;
    }

    .app-nav .navbar-collapse.collapsing,
    .app-nav .navbar-collapse.collapse.show {
        display: block !important;
    }

    .app-nav .navbar-collapse.collapsing {
        transition-duration: 0.15s;
    }

    /* Bootstrap collapse still handles show/hide on mobile */
    .app-nav__links,
    .app-nav__auth,
    .app-nav__user {
        flex-direction: column;
        align-items: center;
        width: 100%;
        padding: 0.5rem 0 1rem;
        gap: 0.25rem;
    }

    .app-nav__links { padding-left: 0; }

    .app-nav__item,
    .app-nav__link,
    .app-nav__btn-ghost,
    .app-nav__btn-primary {
        text-align: center;
    }
}