:root {
    --primary-color: #2c5aa0;
    --primary-dark: #1e3d6f;
    --secondary-color: #00a651;
    --header-green: #155215;
    --accent-color: #f39200;
    --text-dark: #333;
    --text-light: #fff;
    --bg-light: #f8faf8;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --header-height: 70px;
    --mobile-breakpoint: 768px;
}

/* Reset */
* {
    box-sizing: border-box;
}

/* ================================
   Header Container
================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--header-green);
    border-bottom: 2px solid var(--primary-color);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

/* ================================
   Logo
================================ */
.header-logo-link {
    text-decoration: none;
    color: var(--text-light);
    transition: var(--transition);
}

.header-logo-link:hover {
    transform: scale(1.05);
}

.header-logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.5px;
    color: var(--text-light);
}

/* ================================
   Desktop Navigation
================================ */
.desktop-nav {
    display: flex;
}

.header-nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.header-nav-link {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.75rem 0;
    position: relative;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-nav-link:hover {
    color: var(--accent-color);
}

.header-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), var(--text-light));
    transition: width 0.3s ease;
}

.header-nav-link:hover::after,
.header-nav-link[aria-current="page"]::after {
    width: 100%;
}

.header-nav-link[aria-current="page"] {
    color: var(--accent-color);
    font-weight: 600;
}

/* ================================
   Dropdowns
================================ */
.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--text-light);
    min-width: 180px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1001;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    display: block;
    padding: 0.75rem 1.25rem;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 0.9rem;
    transition: var(--transition);
}

.dropdown-content a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
    padding-left: 1.5rem;
}

.dropdown-header {
    padding: 0.5rem 1.25rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ================================
   Cart Icon
================================ */
.cart-icon-link {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    transition: var(--transition);
    text-decoration: none;
}

.cart-icon-link:hover {
    background: var(--accent-color);
    color: var(--text-light);
}

.cart-icon-link::after {
    display: none;
}

.cart-count-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--accent-color);
    color: var(--text-light);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.4rem;
    border-radius: 50%;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

.cart-count-badge:empty {
    display: none;
}

@keyframes pulse {
    50% {
        transform: scale(1.1);
    }
}

/* ================================
   Auth Containers
================================ */
/* Desktop Auth Container */
#auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

#auth-container .dropdown {
    position: relative;
}

#auth-container .header-nav-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    padding: 0;
    transition: var(--transition);
}

#auth-container .header-nav-link:hover {
    background: var(--accent-color);
    color: var(--text-light);
}

#auth-container .header-nav-link::after {
    display: none;
}

/* Mobile Auth Container */
#auth-container-mobile {
    background: var(--primary-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1rem;
    margin-top: auto;
    position: sticky;
    bottom: 0;
}

#auth-container-mobile .dropdown {
    width: 100%;
}

#auth-container-mobile .header-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1rem;
    background: var(--secondary-color);
    color: var(--text-light);
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    justify-content: center;
}

#auth-container-mobile .header-nav-link:hover {
    background: var(--secondary-color);
}

#auth-container-mobile .header-nav-link::after {
    display: none;
}

#auth-container-mobile img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
}

/* Mobile auth dropdown positioning */
#auth-container-mobile .dropdown-content {
    position: relative;
    top: 0;
    left: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    margin-top: 1rem;
    box-shadow: none;
    border: none;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

/* ================================
   Mobile Navigation
================================ */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--text-light);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: var(--header-height) 0 0 0;
    flex: 1;
    overflow-y: auto;
}

.mobile-nav .header-nav-link {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.mobile-nav .header-nav-link:hover {
    background: var(--bg-light);
    color: var(--primary-color);
    padding-left: 2rem;
}

.mobile-nav .header-nav-link::after {
    display: none;
}

.mobile-nav .cart-icon-link {
    background: var(--secondary-color);
    color: var(--text-light);
    margin: 0 1.5rem;
    border-radius: 8px;
    width: auto;
    height: auto;
    padding: 1rem;
    justify-content: flex-start;
    gap: 1rem;
}

.mobile-nav .cart-icon-link:hover {
    background: var(--accent-color);
}

/* Mobile dropdown adjustments */
.mobile-nav .dropdown-content {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: var(--bg-light); 
    margin: 0;
    padding: 0;
}

.mobile-nav .dropdown-content a {
    padding-left: 2.5rem;
    font-size: 0.85rem;
}

/* ================================
   Hamburger Toggle
================================ */
.header-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.header-hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--text-light);
    margin: 3px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.header-menu-toggle.active .header-hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.header-menu-toggle.active .header-hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ================================
   Overlay
================================ */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

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

    .header-menu-toggle {
        display: flex;
    }

    .header-logo-text {
        font-size: 1.5rem;
    }

    .mobile-nav {
        width: 100%;
        max-width: 320px;
    }

    .header-container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0 10px;
        height: 60px;
    }

    .header-logo-text {
        font-size: 1.3rem;
    }

    .mobile-nav {
        width: 100%;
    }

    #auth-container-mobile {
        padding: 0.75rem;
    }

    #auth-container-mobile .header-nav-link {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
}

@media (min-width: 769px) {
    .mobile-nav {
        display: none;
    }
}

/* ================================
   Enhanced Interactions
================================ */
.header-nav-link,
.cart-icon-link,
#auth-container .header-nav-link {
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.header-nav-link:focus-visible,
.cart-icon-link:focus-visible,
#auth-container .header-nav-link:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* ================================
   Auth-Specific Styles
================================ */
/* Desktop Auth Avatar */
.user-avatar-desktop {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
    transition: var(--transition);
}

.user-auth-link:hover .user-avatar-desktop {
    border-color: var(--accent-color);
    transform: scale(1.1);
}

.guest-auth-link,
.user-auth-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    padding: 0;
    transition: var(--transition);
}

.guest-auth-link:hover,
.user-auth-link:hover {
    background: var(--accent-color);
    color: var(--text-light);
}

.guest-auth-link::after,
.user-auth-link::after {
    display: none;
}

/* Mobile Auth Avatar */
.user-avatar-mobile {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
}

.mobile-user-link,
.mobile-guest-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1rem;
    background: var(--secondary-color);
    color: var(--text-light);
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    justify-content: center;
}

.mobile-user-link:hover,
.mobile-guest-link:hover {
    background: var(--secondary-color);
}

.mobile-user-link::after,
.mobile-guest-link::after {
    display: none;
}

/* Mobile dropdown show state */
#auth-container-mobile .dropdown-content.show {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: none;
}

#auth-container-mobile .dropdown-content {
    display: none;
    position: relative;
    top: 0;
    left: 0;
    opacity: 0;
    visibility: hidden;
    transform: none;
    margin-top: 1rem;
    box-shadow: none;
    border: none;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    overflow: hidden;
}

/* Auth dropdown icons */
.dropdown-content a i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
}

/* Smooth scroll behavior for anchor links */
html {
    scroll-behavior: smooth;
}

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