/* ═══════════════════════════════════════════════
   LAYOUT — Header, Footer, Grid, Container
   ═══════════════════════════════════════════════ */

/* ──── HEADER ──── */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 50;
    background: var(--color-black);
    will-change: opacity, transform;
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.main-header.main-header--intro {
    animation: slideDown 0.6s ease-out forwards;
}

.main-header.scrolled {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.header-logo img {
    height: 61px;
}

/* Desktop Nav */
.nav-desktop {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

.nav-desktop a {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.75);
    transition: color var(--transition-fast);
    position: relative;
    padding: var(--space-sm) 0;
}

.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-desktop a:hover,
.nav-desktop a.active {
    color: var(--color-white);
}

.nav-desktop a:hover::after,
.nav-desktop a.active::after {
    width: 100%;
}

.nav-desktop .btn {
    margin-left: var(--space-md);
}

/* Hamburger */
.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--color-white);
    background: none;
    border: none;
    cursor: pointer;
    z-index: 60;
}

/* Mobile Menu Fullscreen */
.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--color-black);
    z-index: 55;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    color: var(--color-white);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.mobile-menu nav a {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: var(--font-size-2xl);
    color: var(--color-white);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

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

/* Stagger dos links mobile */
.mobile-menu.open nav a:nth-child(1) {
    transition-delay: 0.05s;
}

.mobile-menu.open nav a:nth-child(2) {
    transition-delay: 0.1s;
}

.mobile-menu.open nav a:nth-child(3) {
    transition-delay: 0.15s;
}

.mobile-menu.open nav a:nth-child(4) {
    transition-delay: 0.2s;
}

.mobile-menu.open nav a:nth-child(5) {
    transition-delay: 0.25s;
}

.mobile-menu.open nav a:nth-child(6) {
    transition-delay: 0.3s;
}

.mobile-menu.open nav a:nth-child(7) {
    transition-delay: 0.35s;
}

.mobile-menu.open nav a:nth-child(8) {
    transition-delay: 0.4s;
}

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

.mobile-menu .btn {
    margin-top: var(--space-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.mobile-menu.open .btn {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.45s;
}

@media (min-width: 1024px) {
    .nav-desktop {
        display: flex;
    }

    .menu-toggle {
        display: none;
    }
}

/* ──── FOOTER ──── */
.main-footer {
    background: var(--color-black);
    color: var(--color-white);
    padding: 0;
}

.footer-top-bar,
.footer-bottom-bar {
    height: 3px;
    background: var(--color-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    padding: var(--space-3xl) 0 var(--space-2xl);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    margin-top: var(--space-md);
    max-width: 300px;
    line-height: 1.6;
}

.footer-brand img {
    height: 61px;
}

.footer-links h4 {
    color: var(--color-white);
    font-family: var(--font-display);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-sac {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    padding: var(--space-xs) 0;
}

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

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-full);
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-white);
    transition: all var(--transition-fast);
}

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

.footer-tagline {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

@media (min-width: 1024px) {
    .footer-tagline {
        justify-content: flex-end;
    }
}

.tagline-text {
    font-family: var(--font-display);
    font-size: var(--font-size-sm);
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    white-space: nowrap;
}

.tagline-text strong {
    font-size: var(--font-size-3xl);
    font-weight: 900;
    letter-spacing: 0.02em;
    display: inline;
    vertical-align: middle;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-lg) 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-xs);
    line-height: 1.6;
}

.footer-legal-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.footer-legal-links a,
.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-xs);
}

.footer-legal-links span {
    color: rgba(255, 255, 255, 0.3);
}

.footer-bottom a:hover,
.footer-legal-links a:hover {
    color: var(--color-primary);
}