/* ============================================
   PECA Foundation — Layout
   Header, Footer, Trust Bar
   ============================================ */

/* ── Header ── */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    transition: all var(--duration-normal) var(--ease-out);
}

.site-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(10, 22, 40, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    transition: background var(--duration-normal) ease;
    z-index: -1;
}

.site-header.scrolled::before {
    background: rgba(10, 22, 40, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

/* Trust Bar */
.trust-bar {
    background: rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--space-1) 0;
}

.trust-bar .container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.trust-bar__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.6);
    font-weight: var(--weight-medium);
}

.trust-bar__item svg {
    width: 14px;
    height: 14px;
    color: var(--color-accent);
}

.trust-bar__divider {
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

/* Main Nav */
.header-main {
    padding: var(--space-4) 0;
}

.header-main .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

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

.header-logo__text {
    display: flex;
    flex-direction: column;
}

.header-logo__name {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
    color: var(--color-white);
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.header-logo__tagline {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.5);
    font-weight: var(--weight-medium);
    letter-spacing: 0.03em;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.header-nav a {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: rgba(255, 255, 255, 0.75);
    border-radius: var(--radius-sm);
    transition: all var(--duration-fast) ease;
}

.header-nav a:hover,
.header-nav a.active {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.08);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--color-white);
    transition: background var(--duration-fast) ease;
}

.mobile-menu-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
}

.mobile-menu-toggle svg {
    width: 24px;
    height: 24px;
}

.mobile-menu-toggle .close-icon {
    display: none;
}

.mobile-menu-toggle.active .hamburger-icon {
    display: none;
}

.mobile-menu-toggle.active .close-icon {
    display: block;
}

/* Mobile Menu Overlay */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: calc(var(--z-sticky) - 1);
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    padding-top: 120px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--duration-normal) var(--ease-out);
}

.mobile-menu.open {
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu a {
    display: block;
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-xl);
    font-weight: var(--weight-semibold);
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    transition: color var(--duration-fast) ease;
}

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

.mobile-menu .btn {
    margin-top: var(--space-8);
}

/* ── Footer ── */
.site-footer {
    background: var(--color-primary);
    color: rgba(255, 255, 255, 0.7);
}

.footer-main {
    padding: var(--space-16) 0 var(--space-12);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-10);
}

.footer-brand p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
    line-height: var(--leading-relaxed);
    margin-top: var(--space-4);
    max-width: 280px;
}

.footer-brand .header-logo {
    margin-bottom: var(--space-2);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.6);
    transition: all var(--duration-fast) ease;
}

.footer-social a:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

.footer-social a svg {
    width: 18px;
    height: 18px;
}

.footer-column h4 {
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--color-white);
    margin-bottom: var(--space-5);
}

.footer-column ul li {
    margin-bottom: var(--space-3);
}

.footer-column ul a {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--duration-fast) ease;
}

.footer-column ul a:hover {
    color: var(--color-accent);
}

.footer-contact-item {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
}

.footer-contact-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--space-6) 0;
}

.footer-bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-bottom p {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.35);
}

.footer-bottom-links {
    display: flex;
    gap: var(--space-6);
}

.footer-bottom-links a {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.35);
    transition: color var(--duration-fast) ease;
}

.footer-bottom-links a:hover {
    color: rgba(255, 255, 255, 0.7);
}

/* ── Responsive Layout ── */
@media (max-width: 1024px) {
    .header-nav {
        display: none;
    }

    .header-actions .btn--secondary {
        display: none;
    }

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

    .trust-bar {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer-bottom .container {
        flex-direction: column;
        text-align: center;
    }
}