/* ============================================
   Arthur Resplandes — main.css
   Paleta: cinza claro, cinza médio, navy, preto
   ============================================ */

:root {
    /* Cores */
    --color-bg:           #f4f4f4;
    --color-bg-alt:       #ffffff;
    --color-gray-light:   #d9d9d9;
    --color-gray:         #8a8a8a;
    --color-gray-dark:    #4a4a4a;
    --color-navy:         #0f1b2d;
    --color-black:        #1a1a1a;
    --color-text:         #1a1a1a;
    --color-text-muted:   #6b6b6b;
    --color-accent:       #0f1b2d;

    /* Tipografia */
    --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Tamanhos fluidos */
    --fs-xs:   0.75rem;
    --fs-sm:   0.875rem;
    --fs-base: 1rem;
    --fs-md:   1.125rem;
    --fs-lg:   clamp(1.25rem, 1.5vw, 1.5rem);
    --fs-xl:   clamp(1.75rem, 3vw, 2.5rem);
    --fs-2xl:  clamp(2.5rem, 5vw, 4.5rem);
    --fs-3xl:  clamp(3rem, 7vw, 6rem);

    /* Espaçamentos */
    --space-xs:  0.5rem;
    --space-sm:  1rem;
    --space-md:  2rem;
    --space-lg:  4rem;
    --space-xl:  6rem;
    --space-2xl: 9rem;

    /* Layout */
    --container-max: 1400px;
    --container-pad: clamp(1.25rem, 4vw, 3rem);

    /* Transições */
    --transition-fast: 200ms ease;
    --transition-base: 350ms ease;
    --transition-slow: 600ms ease;

    /* Header */
    --header-h: 110px;
}

/* ============ Base ============ */
html, body { background: var(--color-bg); color: var(--color-text); }
body {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: var(--fs-base);
    letter-spacing: 0.01em;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1 0 auto; }

/* ============ Tipografia ============ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 300;
    line-height: 1.15;
    letter-spacing: -0.01em;
    color: var(--color-black);
}
h1 { font-size: var(--fs-3xl); font-weight: 300; }
h2 { font-size: var(--fs-2xl); font-weight: 300; }
h3 { font-size: var(--fs-xl);  font-weight: 400; }
h4 { font-size: var(--fs-lg);  font-weight: 500; }

p { color: var(--color-gray-dark); line-height: 1.7; }

.eyebrow {
    font-size: var(--fs-xs);
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-gray);
    display: inline-block;
    margin-bottom: var(--space-sm);
}

/* ============ Layout ============ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-pad);
    padding-right: var(--container-pad);
}

.section { padding: var(--space-xl) 0; }
.section--lg { padding: var(--space-2xl) 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--color-navy); color: #fff; }
.section--dark h1, .section--dark h2, .section--dark h3 { color: #fff; }
.section--dark p { color: rgba(255,255,255,0.75); }

/* ============ Header ============ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-h);
    background: rgba(244, 244, 244, 0.85);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base);
}
.site-header.is-scrolled { border-bottom-color: var(--color-gray-light); }

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.site-logo a { display: inline-flex; align-items: center; color: var(--color-black); }
.site-logo__svg { height: 64px; width: auto; max-width: 100%; display: block; color: inherit; }
.site-logo__svg--light { color: #fff; }
.site-footer__brand .site-logo__svg { height: 72px; }
@media (max-width: 768px) {
    .site-logo__svg { height: 42px; }
    .site-footer__brand .site-logo__svg { height: 56px; }
}

.site-nav { display: flex; align-items: center; gap: var(--space-md); }
.site-nav__list { display: flex; gap: var(--space-md); }
.site-nav__list a {
    font-size: var(--fs-sm);
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text);
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}
.site-nav__list a::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--color-navy);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}
.site-nav__list a:hover::after,
.site-nav__list .current-menu-item > a::after { transform: scaleX(1); }

.menu-toggle {
    display: none;
    width: 32px; height: 32px;
    position: relative;
}
.menu-toggle span {
    position: absolute;
    left: 4px; right: 4px;
    height: 1.5px;
    background: var(--color-black);
    transition: transform var(--transition-base), opacity var(--transition-fast);
}
.menu-toggle span:nth-child(1) { top: 10px; }
.menu-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.menu-toggle span:nth-child(3) { bottom: 10px; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: flex-end;
    color: #fff;
    overflow: hidden;
}
.hero__media {
    position: absolute; inset: 0;
    z-index: 1;
}
.hero__media img {
    width: 100%; height: 100%;
    object-fit: cover;
}
.hero__media::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(15,27,45,0.2) 0%, rgba(15,27,45,0.7) 100%);
}
.hero__content {
    position: relative;
    z-index: 2;
    padding-bottom: var(--space-xl);
    padding-top: var(--header-h);
}
.hero__title {
    color: #fff;
    font-size: var(--fs-3xl);
    font-weight: 200;
    max-width: 18ch;
}
.hero__subtitle {
    color: rgba(255,255,255,0.85);
    font-size: var(--fs-md);
    margin-top: var(--space-sm);
    max-width: 50ch;
}

/* ============ Botões ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.95rem 2rem;
    font-size: var(--fs-sm);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border: 1px solid currentColor;
    background: transparent;
    color: var(--color-navy);
    transition: background var(--transition-base), color var(--transition-base);
}
.btn:hover { background: var(--color-navy); color: #fff; }
.btn--filled { background: var(--color-navy); color: #fff; }
.btn--filled:hover { background: transparent; color: var(--color-navy); }
.btn--light { color: #fff; border-color: #fff; }
.btn--light:hover { background: #fff; color: var(--color-navy); }

/* ============ Section heading ============ */
.section-heading {
    margin-bottom: var(--space-lg);
    max-width: 800px;
}
.section-heading--center { margin-left: auto; margin-right: auto; text-align: center; }

/* ============ Projetos: grid ============ */
.projetos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 380px), 1fr));
    gap: var(--space-md);
}

.projeto-card {
    position: relative;
    overflow: hidden;
    background: var(--color-black);
    aspect-ratio: 4 / 5;
}
.projeto-card__media {
    position: absolute; inset: 0;
}
.projeto-card__media img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow), filter var(--transition-base);
}
.projeto-card:hover .projeto-card__media img {
    transform: scale(1.04);
    filter: brightness(0.7);
}
.projeto-card__info {
    position: absolute;
    inset: auto 0 0 0;
    padding: var(--space-md);
    color: #fff;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    transform: translateY(20px);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
}
.projeto-card:hover .projeto-card__info,
.projeto-card:focus-within .projeto-card__info { transform: translateY(0); opacity: 1; }

.projeto-card__category {
    font-size: var(--fs-xs);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.7);
    display: block;
    margin-bottom: 0.25rem;
}
.projeto-card__title {
    font-size: var(--fs-lg);
    color: #fff;
    font-weight: 400;
}

/* ============ Filtro de portfólio ============ */
.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    justify-content: center;
}
.portfolio-filter button {
    font-size: var(--fs-xs);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray);
    padding: 0.5rem 0;
    border-bottom: 1px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}
.portfolio-filter button:hover,
.portfolio-filter button.is-active {
    color: var(--color-navy);
    border-bottom-color: var(--color-navy);
}

/* ============ Sobre ============ */
.sobre-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}
.sobre-grid__media img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
}
.sobre-grid__content > * + * { margin-top: var(--space-sm); }

/* ============ Projeto single ============ */
.projeto-hero {
    margin-top: var(--header-h);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-gray-light);
}
.projeto-hero__title { margin-top: var(--space-sm); }
.projeto-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-gray-light);
}
.projeto-meta dt {
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-gray);
    margin-bottom: 0.25rem;
}
.projeto-meta dd {
    font-size: var(--fs-md);
    color: var(--color-black);
    font-weight: 400;
}
.projeto-galeria {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}
.projeto-galeria img { width: 100%; cursor: zoom-in; }
.projeto-galeria__item:nth-child(odd) { grid-column: 1 / -1; }

.projeto-nav {
    display: flex;
    justify-content: space-between;
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-gray-light);
    margin-top: var(--space-xl);
}

/* ============ Contato ============ */
.contato-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}
.contato-info > * + * { margin-top: var(--space-sm); }
.contato-info a:hover { color: var(--color-navy); }

.contato-form .wpcf7-form-control-wrap { display: block; margin-bottom: var(--space-sm); }
.contato-form input[type="text"],
.contato-form input[type="email"],
.contato-form input[type="tel"],
.contato-form textarea {
    width: 100%;
    padding: 1rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-gray-light);
    font-size: var(--fs-base);
    transition: border-color var(--transition-fast);
}
.contato-form input:focus,
.contato-form textarea:focus {
    outline: none;
    border-bottom-color: var(--color-navy);
}
.contato-form textarea { min-height: 120px; resize: vertical; }
.contato-form label {
    display: block;
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-gray);
    margin-bottom: 0.5rem;
}
.contato-form .wpcf7-submit { margin-top: var(--space-md); }

/* ============ Footer ============ */
.site-footer {
    background: var(--color-navy);
    color: rgba(255,255,255,0.75);
    padding: var(--space-lg) 0 var(--space-md);
    font-size: var(--fs-sm);
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--color-gray-light); }
.site-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}
.site-footer__brand { color: #fff; }
.site-footer__brand p { color: rgba(255, 255, 255, 0.85); }
.site-footer__heading {
    color: #fff;
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    margin-bottom: var(--space-sm);
}
.site-footer__list > * + * { margin-top: 0.5rem; }
.site-footer__bottom {
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-sm);
    font-size: var(--fs-xs);
}

/* ============ Lightbox ============ */
.lightbox {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-md);
}
.lightbox.is-open { display: flex; }
.lightbox img { max-width: 100%; max-height: 90vh; object-fit: contain; }
.lightbox__close {
    position: absolute;
    top: var(--space-md); right: var(--space-md);
    color: #fff;
    font-size: 2rem;
    line-height: 1;
}

/* ============ Animações de entrada ============ */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 800ms ease, transform 800ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ============ 404 ============ */
.error-page {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xl) 0;
}

/* ============ Responsivo ============ */
@media (max-width: 900px) {
    .sobre-grid,
    .contato-grid,
    .site-footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    :root { --header-h: 80px; }

    .menu-toggle { display: block; z-index: 110; position: relative; }

    .site-nav {
        position: fixed;
        top: var(--header-h); left: 0; right: 0; bottom: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-lg) var(--container-pad);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: 105;
        overflow-y: auto;
    }
    .site-nav.is-open { transform: translateX(0); }
    .site-nav__list { flex-direction: column; gap: var(--space-md); width: 100%; }
    .site-nav__list a { font-size: var(--fs-lg); }

    .section { padding: var(--space-lg) 0; }
    .section--lg { padding: var(--space-xl) 0; }

    .projeto-galeria__item:nth-child(odd) { grid-column: auto; }
}