/* ==========================================================================
   Navigation — Mobile First (hamburger by default)
   Extracted from main.css for modularity (v0.8.0)
   ========================================================================== */

.navbar {
    background-color: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.75rem 1rem;
}

.navbar-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.logo:hover {
    color: var(--primary-dark);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    display: none;
}

/* Hamburger Button — visible on mobile */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    min-width: 44px;
    min-height: 44px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger animation when open */
.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Nav Menu — hidden by default on mobile */
.navbar-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0.25rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
}

.navbar-menu.open {
    display: flex;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    border-radius: var(--border-radius-sm);
    min-height: 44px;
    transition: background-color var(--transition-base, 0.2s ease), color var(--transition-base, 0.2s ease);
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

/* Notification bell in nav */
.nav-link-bell {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.bell-icon {
    width: 18px;
    height: 18px;
    vertical-align: middle;
}

.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--error);
    color: var(--text-inverse);
    font-size: 0.65rem;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center;
    border-radius: 50%;
    padding: 0 4px;
}

.nav-actions {
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
}

/* "More" Dropdown — groups secondary nav items */
.nav-more {
    position: relative;
}

.nav-more-toggle {
    cursor: pointer;
    background: none;
    border: none;
    font: inherit;
}

.nav-more-menu {
    display: none;
    flex-direction: column;
    gap: 0.125rem;
    /* On mobile, items show inline (no absolute positioning) */
    padding-left: 1rem;
}

.nav-more-menu.open {
    display: flex;
}

.nav-more-item {
    display: flex;
    align-items: center;
    padding: 0.625rem 1rem;
    color: var(--text-color);
    border-radius: var(--border-radius-sm);
    min-height: 44px;
    font-size: 0.9rem;
    transition: background-color var(--transition-base, 0.2s ease), color var(--transition-base, 0.2s ease);
}

.nav-more-item:hover,
.nav-more-item:focus-visible,
.nav-more-item.active {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.nav-more-item:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}

.nav-more-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.25rem 0;
}

/* Nav user display */
.nav-user {
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: 0 0.5rem;
}

/* --------------------------------------------------------------------------
   Tablet (768px+) — show logo text
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
    .logo-text {
        display: inline;
    }
}

/* --------------------------------------------------------------------------
   Desktop (1024px+) — horizontal nav
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }

    .navbar-menu {
        display: flex !important;
        flex-direction: row;
        align-items: center;
        width: auto;
        gap: 0.25rem;
        padding-top: 0;
        border-top: none;
        margin-top: 0;
    }

    .nav-link {
        padding: 0.5rem 0.75rem;
    }

    .nav-actions {
        padding-top: 0;
        border-top: none;
        margin-top: 0;
        margin-left: 0.5rem;
    }

    /* "More" dropdown — absolute on desktop */
    .nav-more-menu {
        position: absolute;
        top: 100%;
        right: 0;
        z-index: 200;
        min-width: 200px;
        padding: 0.5rem 0;
        padding-left: 0;
        background: var(--card-background);
        border: 1px solid var(--border-color);
        border-radius: var(--border-radius);
        box-shadow: var(--shadow-lg);
        margin-top: 0.25rem;
    }

    .nav-more-item {
        padding: 0.5rem 1rem;
        border-radius: 0;
    }

    .nav-more-item:first-child {
        border-radius: var(--border-radius) var(--border-radius) 0 0;
    }

    .nav-more-item:last-child {
        border-radius: 0 0 var(--border-radius) var(--border-radius);
    }
}