/**
 * Header and Navigation Styles
 */

.header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--spacing-lg);
    max-width: var(--container-max-width);
    margin: 0 auto;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-decoration: none;
}

.logo-image {
    height: 40px;
    width: auto;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--color-gray-700);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    position: relative;
}

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

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: var(--spacing-md);
    right: var(--spacing-md);
    height: 2px;
    background-color: var(--color-primary);
}

/* Auth Buttons */
.auth-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.auth-buttons .btn {
    white-space: nowrap;
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
}

.auth-buttons .btn-outline {
    border: 2px solid var(--color-primary);
}

.auth-buttons .btn-primary {
    border: 2px solid var(--color-primary);
}

/* Mobile Auth Toggle Button */
.mobile-auth-toggle {
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-base);
}

.mobile-auth-toggle:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.mobile-auth-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.mobile-auth-toggle.active svg {
    transform: rotate(180deg);
}

/* Profile Dropdown */
.profile-dropdown {
    position: relative;
    display: none; /* Hidden by default, shown when logged in */
}

.profile-trigger {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.profile-trigger:hover {
    background-color: var(--color-gray-200);
}

.profile-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.profile-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-900);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown-arrow {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
}

.profile-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    min-width: 200px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    width: 100%;
}

.dropdown-item:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--color-gray-200);
    margin: var(--spacing-sm) 0;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-900);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .mobile-menu-toggle {
        display: flex;
    }

    /* Show mobile auth toggle button, hide desktop auth buttons */
    .mobile-auth-toggle {
        display: flex;
    }

    .auth-buttons {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-white);
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        gap: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: var(--z-dropdown);
        border-top: 1px solid var(--color-gray-200);
        box-sizing: border-box;
    }

    .auth-buttons.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .auth-buttons .btn {
        width: 100%;
        justify-content: center;
        text-align: center;
        padding: var(--spacing-md);
        font-size: var(--font-size-base);
        margin: 0;
        box-sizing: border-box;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-white);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

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

    .nav-link {
        width: 100%;
        padding: var(--spacing-md);
    }

    .nav-link.active::after {
        display: none;
    }
}

@media (max-width: 640px) {
    .header-container {
        padding: 0 var(--spacing-md);
    }

    .logo {
        font-size: var(--font-size-xl);
    }

    .logo-image {
        height: 32px;
    }

    .profile-name {
        display: none;
    }
}