/* ==========================================================================
   Navigation Styles
   All styles scoped to .site-header, .nav, and .nav-* classes
   ========================================================================== */

/* Header Container */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

/* Nav Bar */
.nav {
    background: rgba(248, 249, 251, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-mark {
    height: 44px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    gap: 2px;
}

.logo-line1 {
    font-size: 0.8125rem;
    font-weight: var(--font-semibold);
    color: var(--color-primary);
    letter-spacing: 0.04em;
}

.logo-divider {
    width: 100%;
    height: 1px;
    background: var(--color-border);
}

.logo-line2 {
    font-size: 0.625rem;
    font-weight: var(--font-normal);
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* Nav Links Container */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Nav Item (dropdown container) */
.nav-item {
    position: relative;
}

/* Nav Link */
.nav-link {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-text-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: color var(--transition), background-color var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
    background: var(--color-bg-alt);
}

/* Nav Chevron Icon */
.nav-chevron {
    width: 12px;
    height: 12px;
    opacity: 0.5;
    transition: opacity var(--transition), transform var(--transition);
}

.nav-item:hover .nav-chevron {
    opacity: 1;
    transform: rotate(180deg);
}

/* Dropdown Menu */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    padding: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
}

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

.nav-dropdown a {
    display: block;
    padding: 0.625rem 0.875rem;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: color var(--transition), background-color var(--transition);
}

.nav-dropdown a:hover {
    color: var(--color-text);
    background: var(--color-bg-alt);
}

/* CTA Button */
.nav-cta {
    margin-left: var(--space-md);
    padding: 0.625rem 1.25rem;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-surface);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background-color var(--transition);
    white-space: nowrap;
}

.nav-cta:hover {
    color: var(--color-surface);
    background: var(--color-primary-light);
}

/* Mobile Menu Toggle */
.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: transform var(--transition), opacity var(--transition);
}

/* ==========================================================================
   Mobile Styles
   ========================================================================== */

@media (max-width: 1024px) {
    .nav-inner {
        padding: 0 var(--space-md);
    }
}

@media (max-width: 768px) {
    /* Show mobile toggle, hide desktop nav */
    .nav-mobile-toggle {
        display: flex;
    }

    .nav-links,
    .nav-cta {
        display: none;
    }

    /* Mobile menu open state */
    .nav.mobile-open .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border-light);
        padding: var(--space-md);
        gap: 0;
    }

    .nav.mobile-open .nav-cta {
        display: block;
        margin: var(--space-md);
        text-align: center;
    }

    .nav.mobile-open .nav-item {
        width: 100%;
    }

    .nav.mobile-open .nav-link {
        justify-content: space-between;
        padding: var(--space-md);
        border-bottom: 1px solid var(--color-border-light);
    }

    .nav.mobile-open .nav-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0 0 0 var(--space-md);
        display: none;
    }

    .nav.mobile-open .nav-item.dropdown-open .nav-dropdown {
        display: block;
    }

    .nav.mobile-open .nav-item.dropdown-open .nav-chevron {
        transform: rotate(180deg);
    }

    /* Hamburger animation */
    .nav.mobile-open .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav.mobile-open .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .nav.mobile-open .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .logo-mark {
        height: 36px;
    }

    .logo-text {
        display: none;
    }
}