/* ==========================================================================
   layout.css — container, site-header, site-footer, nav-primary, whatsapp-float
   ========================================================================== */

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

/* ===== Site header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--line-subtle);
    backdrop-filter: saturate(180%) blur(10px);
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    transition: box-shadow var(--dur-fast) var(--ease-out);
}

.site-header__inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    min-height: 72px;
    gap: var(--s-4);
}

.site-header__logo {
    display: block;
    flex-shrink: 0;
}

.site-header__logo img {
    height: 48px;
    width: auto;
}

.site-header__whatsapp {
    display: inline-flex;
    align-items: center;
    gap: var(--s-1);
    padding: 0.75rem var(--s-3);
    min-height: 44px;
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand-navy);
    background: transparent;
    border: 1px solid var(--brand-navy);
    border-radius: 0;
    transition:
        background var(--dur-fast) var(--ease-out),
        color var(--dur-fast) var(--ease-out);
}

.site-header__whatsapp:hover {
    background: var(--brand-navy);
    color: var(--brand-white);
}

.site-header__whatsapp-icon {
    display: inline-flex;
}

/* ===== Nav primary ===== */
.nav-primary {
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-primary__list {
    display: flex;
    gap: var(--s-4);
    list-style: none;
    padding: 0;
    margin: 0;
    justify-content: center;
}

.nav-primary__link {
    display: inline-block;
    padding-block: var(--s-1);
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.75rem;
    color: var(--ink-700);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    position: relative;
    transition: color var(--dur-fast) var(--ease-out);
}

.nav-primary__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--brand-cyan);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--dur-fast) var(--ease-out);
}

.nav-primary__link:hover,
.nav-primary__link.is-current {
    color: var(--brand-navy);
}

.nav-primary__link:hover::after,
.nav-primary__link.is-current::after {
    transform: scaleX(1);
}

.nav-primary__toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: 1.5px solid var(--brand-navy);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.nav-primary__toggle-bars {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    width: 100%;
    height: 100%;
}

.nav-primary__toggle-bars span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--brand-navy);
    border-radius: 2px;
    transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}

.nav-primary__toggle[aria-expanded="true"] .nav-primary__toggle-bars span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-primary__toggle[aria-expanded="true"] .nav-primary__toggle-bars span:nth-child(2) {
    opacity: 0;
}

.nav-primary__toggle[aria-expanded="true"] .nav-primary__toggle-bars span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 900px) {
    .nav-primary__toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-primary__list {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: var(--s-2) var(--container-pad);
        background: var(--brand-white);
        border-top: 1px solid var(--line-subtle);
        border-bottom: 1px solid var(--line-subtle);
        box-shadow: var(--shadow-md);
    }

    .nav-primary__list[data-open] {
        display: flex;
    }

    .nav-primary__item {
        border-bottom: 1px solid var(--line-subtle);
    }

    .nav-primary__item:last-child {
        border-bottom: 0;
    }

    .nav-primary__link {
        display: block;
        padding: var(--s-2) 0;
        font-size: var(--fs-body-lg);
    }

    .site-header__whatsapp-label {
        display: none;
    }

    .site-header__whatsapp {
        padding: var(--s-1);
        min-width: 44px;
    }
}

/* ===== Footer ===== */
.site-footer {
    background: var(--brand-navy);
    color: var(--brand-white);
    padding-block: var(--s-6) var(--s-4);
    margin-top: 0;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at top left, var(--brand-cyan-10) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, var(--brand-navy-20) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.site-footer > * {
    position: relative;
    z-index: 1;
}

.site-footer__grid {
    display: grid;
    gap: var(--s-5);
    grid-template-columns: 2fr repeat(3, 1fr);
    padding-bottom: var(--s-5);
    border-bottom: 1px solid var(--brand-navy-20);
}

.site-footer__brand img {
    width: 180px;
    height: auto;
}

.site-footer__tagline {
    margin-top: var(--s-2);
    color: var(--brand-gray);
    max-width: 32ch;
    font-size: var(--fs-body);
}

.site-footer h4 {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--brand-cyan);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: var(--s-3);
}

.site-footer__col p,
.site-footer__col ul {
    color: var(--brand-gray);
    font-size: var(--fs-body);
}

.site-footer__col ul {
    list-style: none;
    padding: 0;
}

.site-footer__col ul li {
    margin-bottom: var(--s-1);
}

.site-footer a {
    color: var(--brand-white);
    border-bottom: 1px solid transparent;
    transition: border-color var(--dur-fast) var(--ease-out);
}

.site-footer a:hover {
    border-color: var(--brand-cyan);
}

.site-footer__legal {
    display: flex;
    justify-content: space-between;
    padding-top: var(--s-3);
    padding-right: 80px; /* reserva espaço pro .whatsapp-float à direita */
    font-size: var(--fs-caption);
    color: var(--brand-gray);
}

@media (max-width: 900px) {
    .site-footer__grid {
        grid-template-columns: 1fr;
    }

    .site-footer__legal {
        flex-direction: column;
        gap: var(--s-1);
        text-align: center;
        padding-right: 0;
        padding-bottom: calc(56px + var(--s-3)); /* mobile: WhatsApp cobre embaixo, empurra texto pra cima */
    }
}

/* ===== WhatsApp float ===== */
.whatsapp-float {
    position: fixed;
    right: var(--s-3);
    bottom: var(--s-3);
    z-index: var(--z-float);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: #25D366;
    color: var(--brand-white);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    transition:
        transform var(--dur-fast) var(--ease-out),
        box-shadow var(--dur-fast) var(--ease-out);
}

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: var(--shadow-lg);
}

/* Esconde o float no header em desktop pra não competir com o botão */
@media (min-width: 901px) {
    .whatsapp-float {
        right: var(--s-4);
        bottom: var(--s-4);
    }
}