/* ============================================
   SITE NAVIGATION
   ============================================ */

/* Navigation Bar */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 20, 25, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    transition: opacity var(--transition-base);
}

.nav-logo:hover {
    opacity: 0.8;
}

.nav-brand {
    white-space: nowrap;
}

/* Desktop Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: 0.5rem 0;
    transition: color var(--transition-base);
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link:hover {
    color: var(--color-text-primary);
}

/* Categories Dropdown */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.dropdown-icon {
    transition: transform var(--transition-base);
}

.nav-dropdown:hover .dropdown-icon,
.nav-dropdown.active .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 1rem);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 240px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    padding: var(--spacing-sm) 0;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.dropdown-item:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.dropdown-item-highlight {
    color: var(--color-accent-primary);
    font-weight: 600;
}

.dropdown-item-highlight:hover {
    background: rgba(255, 107, 107, 0.1);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-sm) 0;
}

.category-icon-nav {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

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

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1001;
}

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    max-width: 85vw;
    background: var(--color-bg-primary);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 1002;
    overflow-y: auto;
}

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

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: 1.125rem;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-base);
}

.mobile-menu-close:hover {
    color: var(--color-text-primary);
}

.mobile-menu-content {
    padding: var(--spacing-lg);
}

.mobile-menu-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu-link:hover {
    color: var(--color-text-primary);
}

.mobile-menu-link-sub {
    padding-left: var(--spacing-lg);
    font-size: 0.9375rem;
}

.mobile-menu-link-highlight {
    color: var(--color-accent-primary);
    font-weight: 600;
}

.mobile-menu-section {
    margin-top: var(--spacing-lg);
}

.mobile-menu-section-title {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-sm);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-brand {
        font-size: 1.125rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--spacing-md);
        height: 60px;
    }

    .nav-brand {
        font-size: 1rem;
    }

    .nav-logo svg {
        width: 28px;
        height: 28px;
    }
}