/* ============================================================
   navigation.css — Mobile hamburger menu, desktop dropdowns,
                    user menu
   ============================================================ */

/* ── Mobile nav container (hidden by default) ────────────── */
.mobile-nav-container {
    display: none;
}

/* ── Hamburger menu ──────────────────────────────────────── */
.hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1001;
}

.hamburger-menu:hover {
    background: var(--hover-bg);
}

.hamburger-line {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.hamburger-line:not(:last-child) {
    margin-bottom: 4px;
}

/* Hamburger Animation */
.hamburger-menu.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger-menu.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger-menu.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu Overlay ─────────────────────────────────── */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ── Mobile Navigation Menu ──────────────────────────────── */
.mobile-nav {
    position: absolute;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--card-bg);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    padding: 6rem 0 2rem 0;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu-overlay.active .mobile-nav {
    transform: translateX(0);
}

/* Mobile Navigation Items */
.mobile-nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.mobile-nav-item:hover {
    background: var(--hover-bg);
    border-left-color: var(--gradient-start);
}

.mobile-nav-item.active {
    background: linear-gradient(90deg, rgba(11, 74, 125, 0.1), transparent);
    border-left-color: var(--gradient-start);
    color: var(--gradient-start);
    font-weight: 600;
}

.mobile-nav-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.mobile-nav-text {
    flex: 1;
    text-align: left;
}

/* Mobile Navigation Group (for Documents submenu) */
.mobile-nav-group {
    border-left: 4px solid transparent;
}

.mobile-nav-group-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-nav-group:hover .mobile-nav-group-header {
    background: var(--hover-bg);
}

.mobile-nav-arrow {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    margin-left: auto;
}

.mobile-nav-group.expanded .mobile-nav-arrow {
    transform: rotate(180deg);
}

.mobile-nav-submenu {
    max-height: 0;
    overflow: hidden;
    background: var(--hover-bg);
    transition: max-height 0.3s ease;
}

.mobile-nav-group.expanded .mobile-nav-submenu {
    max-height: 200px;
}

.mobile-nav-subitem {
    display: block;
    width: 100%;
    padding: 0.75rem 3rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.mobile-nav-subitem:hover {
    background: rgba(11, 74, 125, 0.1);
    color: var(--gradient-start);
}

.mobile-nav-subitem.active {
    color: var(--gradient-start);
    font-weight: 600;
}

/* Mobile User Section Styles */
.mobile-user-section {
    padding: 1rem 1.5rem 1.5rem 1.5rem;
    background: linear-gradient(135deg, rgba(11, 74, 125, 0.05), rgba(18, 104, 12, 0.05));
    border-bottom: 1px solid var(--border-default);
    margin-bottom: 1rem;
}

.mobile-user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-default);
}

.mobile-user-icon {
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    color: white;
}

.mobile-user-text {
    flex: 1;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.mobile-user-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-user-action {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 8px;
}

.mobile-user-action:hover {
    background: var(--hover-bg);
    border-color: var(--gradient-start);
    color: var(--gradient-start);
}

.mobile-user-action:last-child {
    background: rgba(220, 53, 69, 0.1);
    border-color: rgba(220, 53, 69, 0.3);
    color: #dc3545;
}

.mobile-user-action:last-child:hover {
    background: rgba(220, 53, 69, 0.15);
    border-color: #dc3545;
}

.mobile-nav-separator {
    height: 1px;
    background: var(--border-default);
    margin: 0 1.5rem 1rem 1.5rem;
}

/* Prevent body scroll when mobile menu is open */
body.mobile-menu-open {
    overflow: hidden;
}

/* ── Desktop Dropdown Menus ──────────────────────────────── */
.nav-tab-dropdown .dropdown-arrow {
    margin-left: 0.5rem;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    display: inline-block;
    width: 12px;
    text-align: center;
}

.nav-tab-dropdown .nav-tab:hover .dropdown-arrow,
.nav-tab-dropdown .nav-dropdown-menu.show ~ .nav-tab .dropdown-arrow {
    transform: rotate(180deg);
}

.nav-tab-dropdown {
    position: relative;
    display: inline-block;
    white-space: nowrap;
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card-bg);
    border: 2px solid transparent;
    background-image: linear-gradient(var(--card-bg), var(--card-bg)),
                      linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    border-radius: 8px;
    box-shadow: var(--shadow-medium);
    min-width: 160px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    margin-top: 0.5rem;
}

.nav-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-item {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    text-align: left;
    color: #333333;
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 0.9rem;
}

.nav-dropdown-item:hover {
    background: #f5f5f5;
    color: #333333;
}

.nav-dropdown-item:first-child {
    border-radius: 8px 8px 0 0;
}

.nav-dropdown-item:last-child {
    border-radius: 0 0 8px 8px;
}

/* ── User Menu ───────────────────────────────────────────── */
.user-menu {
    position: relative;
    margin-left: 2em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-menu-button {
    background: linear-gradient(var(--card-bg), var(--card-bg)),
                linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    border: 2px solid transparent;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.user-menu-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.15), 0 4px 10px rgba(0,0,0,0.1);
}

.user-icon {
    font-size: 1.2rem;
    color: var(--gradient-start);
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.15), 0 4px 10px rgba(0,0,0,0.1);
    border: 1px solid var(--border-default);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.user-menu-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-menu-dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    right: 16px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid var(--card-bg);
    filter: drop-shadow(0 -2px 2px rgba(0,0,0,0.1));
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 4px;
}

.user-menu-item:first-child {
    margin-top: 8px;
}

.user-menu-item:last-child {
    margin-bottom: 8px;
}

.user-menu-item:hover {
    background: linear-gradient(135deg, rgba(11, 74, 125, 0.1), rgba(18, 104, 12, 0.1));
    color: var(--gradient-start);
}

.menu-icon {
    font-size: 1rem;
    opacity: 0.8;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .mobile-nav-container {
        display: block;
    }

    .mobile-nav {
        width: 320px;
        padding-top: 4rem;
    }

    .user-menu-dropdown {
        right: -10px;
        min-width: 180px;
    }
}

@media (max-width: 480px) {
    .mobile-nav {
        width: 100%;
    }
}