/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: var(--z-header);
    transition: background-color var(--transition-base), backdrop-filter var(--transition-base);
    border-bottom: 1px solid transparent;
}

.site-header--transparent {
    background-color: transparent;
}

.site-header--scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom-color: var(--color-border-white-10);
    box-shadow: var(--shadow-lg);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    z-index: 60;
}

.site-logo__icon {
    width: 20px;
    height: 20px;
    background-color: var(--color-accent);
    flex-shrink: 0;
}

.site-logo__text {
    font-family: var(--font-body);
    font-size: var(--text-xl);
    font-weight: var(--weight-black);
    color: var(--color-text-white);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Desktop Nav */
.nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-desktop__list {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    color: var(--color-text-white);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    transition: color var(--transition-base);
    white-space: nowrap;
}

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

/* CTA Button in Nav */
.nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent);
    color: var(--color-text-white);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0 var(--space-8);
    height: 2.5rem;
    text-decoration: none;
    transition: background-color var(--transition-base);
    white-space: nowrap;
}

.nav-cta:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-text-white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 60;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-white);
    margin: 5px 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

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

/* Mobile Menu Overlay */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background-color: var(--color-bg-primary);
    z-index: 55;
    padding: calc(var(--header-height) + var(--space-8)) var(--space-6) var(--space-8);
    overflow-y: auto;
}

.mobile-menu.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.mobile-menu__list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: center;
}

.mobile-menu__list li {
    margin-bottom: var(--space-8);
}

.mobile-menu__link {
    font-family: var(--font-body);
    font-size: var(--text-3xl);
    font-weight: var(--weight-black);
    color: var(--color-text-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: color var(--transition-base);
}

.mobile-menu__link:hover {
    color: var(--color-accent);
}

.mobile-menu__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent);
    color: var(--color-text-white);
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-4) var(--space-8);
    text-decoration: none;
    margin-top: var(--space-8);
    width: 100%;
    max-width: 300px;
    text-align: center;
}

@media (max-width: 1024px) {
    .nav-desktop {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }
}