/* ========================================
   Shared Header Styles
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    transition: all var(--transition-base);
    border-bottom: 1px solid transparent;
}

.header-scrolled {
    background: rgba(255, 255, 255, 0.92);
    border-bottom-color: var(--border-light);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

/* Header on dark background */
.header:not(.header-scrolled) .logo-text { color: #FFFFFF; }
.header:not(.header-scrolled) .logo-text strong { color: #93B4FF; }
.header:not(.header-scrolled) .nav-link { color: rgba(255, 255, 255, 0.6); }
.header:not(.header-scrolled) .nav-link:hover { color: #FFFFFF; background: rgba(255, 255, 255, 0.08); }
.header:not(.header-scrolled) .nav-link-active { color: #FFFFFF; background: rgba(255, 255, 255, 0.06); }
.header:not(.header-scrolled) .btn-ghost { color: rgba(255, 255, 255, 0.7); }
.header:not(.header-scrolled) .btn-ghost:hover { color: #FFFFFF; background: rgba(255, 255, 255, 0.08); }
.header:not(.header-scrolled) .mobile-menu-btn span { background: #FFFFFF; }

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo-text {
    font-size: 24px;
    font-weight: var(--weight-medium);
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-text strong {
    font-weight: var(--weight-extrabold);
    color: var(--primary);
}

.nav {
    display: flex;
    gap: var(--space-6);
}

.nav-link {
    font-size: 13px;
    font-weight: var(--weight-medium);
    color: var(--text-secondary);
    transition: all var(--transition-base);
    padding: var(--space-8) var(--space-12);
    border-radius: var(--radius-md);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-50);
}

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

.nav-link i { margin-right: 5px; font-size: 12px; opacity: 0.7; }
.nav-link:hover i { opacity: 1; }

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.header-actions .btn {
    padding: var(--space-8) var(--space-16);
    font-size: 13px;
    border-radius: var(--radius-md);
}

.header-actions .btn i { font-size: 12px; }

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-8);
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all var(--transition-base);
}

/* Mobile nav */
@media (max-width: 767px) {
    .nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-12) var(--space-20);
        gap: var(--space-4);
        box-shadow: var(--shadow-xl);
        border-bottom: 1px solid var(--border-light);
    }

    .nav-open { display: flex; }

    .nav-link {
        padding: var(--space-12) var(--space-16);
        border-radius: var(--radius-lg);
    }

    .header-actions { display: none; }

    .mobile-menu-btn { display: flex; }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}