/* ============================================================
   INDYO.COM — Navigation / Header
   ============================================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    transition: background var(--transition-base), border-color var(--transition-base), backdrop-filter var(--transition-base);
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    background: rgba(9, 9, 15, 0.85);
    border-bottom-color: var(--color-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

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

/* ---- Logo ---- */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    text-decoration: none;
}

.nav-logo-img {
    height: 36px;
    width: auto;
}

.nav-logo-text {
    font-size: 1.375rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

/* ---- Nav Links ---- */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    display: block;
    padding: 0.45rem 0.9rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text-primary);
    background: rgba(255,255,255,0.05);
}

/* ---- Nav Actions ---- */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.nav-user-greeting {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ---- Hamburger ---- */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    gap: 5px;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: border-color var(--transition-fast);
    z-index: 1010;
}

.hamburger:hover { border-color: var(--color-accent-purple); }

.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile Nav Overlay ---- */
.mobile-nav {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(9, 9, 15, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    padding: var(--space-xl);
    flex-direction: column;
    gap: var(--space-sm);
    overflow-y: auto;
    border-top: 1px solid var(--color-border);
    transform: translateY(-10px);
    opacity: 0;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.mobile-nav.open {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.mobile-nav a {
    display: block;
    padding: var(--space-md) var(--space-lg);
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.mobile-nav a:hover, .mobile-nav a.active {
    color: var(--color-text-primary);
    background: var(--color-bg-card);
    border-color: var(--color-border);
}

.mobile-nav-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-sm) 0;
}

.mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-md);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .nav-links  { display: none; }
    .nav-actions .btn { display: none; }
    .nav-actions .nav-user-greeting { display: none; }
    .hamburger { display: flex; }
}

@media (max-width: 480px) {
    .nav-container { padding: 0 var(--space-lg); }
}