/* --- RESET E VARIÁVEIS --- */
:root {
    /* ==== CORES ==== */
    --color-bg-light: #ffffff;
    --color-bg-dark: #0f0f0f;
    --color-bg-gray: #f5f5f5;
    --color-text-dark: #111111;
    --color-text-light: #ffffff;
    --color-text-gray: #666666;
    --color-text-muted: #999999;
    --color-border: #e0e0e0;
    --color-border-dark: #333333;
    --color-placeholder: #f0f0f0;
    --color-placeholder-dark: #1a1a1a;
    --color-icon-bg: #f0f0f0;

    /* ==== TIPOGRAFIA ==== */
    --font-main: 'Sora', sans-serif;
    --fs-hero: 5rem;
    --fs-h2: 2.5rem;
    --fs-h3: 1.8rem;
    --fs-title-card: 1.2rem;
    --fs-title-small: 1.1rem;
    --fs-body: 1.1rem;
    --fs-body-sm: 0.95rem;
    --fs-small: 0.9rem;
    --fs-xs: 0.8rem;
    --lh-tight: 1.1;
    --lh-title: 1.2;

    /* ==== LAYOUT ==== */
    --container-width: 1140px;
    --container-padding: 24px;

    /* ==== ESPAÇAMENTO ENTRE SEÇÕES ==== */
    --spacing-section-g: 140px;   /* 80–120px  - mesma família de conteúdo */
    --spacing-section-m: 120px;   /* 120–160px - mudança de tema/assunto */
    --spacing-section-p: 100px;   /* 100–140px - Hero → primeira seção */

    /* ==== ESPAÇAMENTO INTERNO ==== */
    --spacing-internal-g: 48px;   /* 32–64px  - blocos internos da mesma seção */
    --spacing-internal-m: 40px;   /* 32–48px  - entre título/subtítulo e conteúdo */
    --spacing-internal-p: 20px;   /* 16–24px  - entre título e subtítulo */
    --spacing-header-bottom: 80px;/* header da seção -> conteúdo */

    /* ==== GAPS ==== */
    --gap-nav: 32px;
    --gap-grid: 40px;
    --gap-grid-sm: 30px;
    --gap-project: 60px;
    --gap-between-projects: 100px;
    --gap-testimonials: 80px;
    --gap-logo: 72px;

    /* ==== COMPONENTES ==== */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-pill: 50px;
    --btn-padding-y: 12px;
    --btn-padding-x: 24px;

    /* ==== MÍDIA ==== */
    --media-project-height: 350px;
    --media-card-height: 250px;
    --media-hero-width: 45%;
    --avatar-size: 40px;
    --icon-box-size: 48px;

    /* ==== HEADER / HERO ==== */
    --header-padding-y: 24px;
    --hero-padding-top: 100px;
    --hero-content-padding-bottom: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    color: var(--color-text-dark);
    line-height: 1.5;
    background-color: var(--color-bg-light);
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

section[id] {
    scroll-margin-top: 24px;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* --- UTILITÁRIOS --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.btn {
    display: inline-block;
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border-radius: var(--radius-pill);
    font-weight: 500;
    font-size: var(--fs-small);
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-text-dark);
    color: var(--color-text-light);
}

.btn-primary:hover {
    transition: all 0.3s ease-in-out;
    transform: scale(1.05);
}

.btn-secondary {
    color: var(--color-text-dark);
    background-color: var(--color-text-light);
}

.btn-secondary:hover {
    transition: all 0.3s ease-in-out;
    transform: scale(1.05);
}

/* CTA do header: contorno para não competir com o CTA sólido do hero */
.header-cta {
    background-color: transparent;
    color: var(--color-text-light);
    border: 1px solid rgba(255, 255, 255, 0.45);
}

.header-cta:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: var(--color-text-light);
    transform: none;
}

.btn-hero {
    background-color: var(--color-text-light);
    color: var(--color-text-dark);
}

.btn-hero:hover {
    transform: scale(1.05);
}

a:focus-visible,
summary:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 3px;
}

/* --- HEADER --- */
.header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--header-padding-y) 0;
    z-index: 10;
    color: var(--color-text-light);
}

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

.logo {
    font-weight: 700;
    font-size: 1.2rem;
}

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

.nav a {
    font-size: var(--fs-small);
    opacity: 0.8;
}

.nav a:hover {
    opacity: 1;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* --- MENU MOBILE (details/summary, sem JS) --- */
.nav-mobile {
    display: none;
    position: relative;
}

.nav-mobile summary {
    list-style: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: var(--radius-pill);
}

.nav-mobile summary::-webkit-details-marker {
    display: none;
}

.burger,
.burger::before,
.burger::after {
    content: "";
    display: block;
    width: 16px;
    height: 2px;
    background-color: var(--color-text-light);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
    position: relative;
}

.burger::before,
.burger::after {
    position: absolute;
    left: 0;
}

.burger::before { top: -5px; }
.burger::after { top: 5px; }

.nav-mobile[open] .burger {
    background-color: transparent;
}

.nav-mobile[open] .burger::before {
    transform: translateY(5px) rotate(45deg);
}

.nav-mobile[open] .burger::after {
    transform: translateY(-5px) rotate(-45deg);
}

.nav-mobile-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 14px);
    min-width: 220px;
    background-color: var(--color-bg-dark);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
    z-index: 20;
}

/* :not(.btn) — sem ele, esta regra sobrepõe a cor escura do
   .btn-secondary e o CTA vira texto branco sobre fundo branco */
.nav-mobile-panel a:not(.btn) {
    color: var(--color-text-light);
    font-size: var(--fs-body-sm);
    opacity: 0.85;
}

.nav-mobile-panel a:hover {
    opacity: 1;
}

.nav-mobile-panel .btn {
    opacity: 1;
    text-align: center;
}

/* --- HERO SECTION --- */
.hero {
    background: radial-gradient(ellipse at 100% 30%, #1476e4 10px, #0d224d 30%, #000000 50%);
    color: var(--color-text-light);
    padding-top: var(--hero-padding-top);
    padding-bottom: 0;
    overflow: hidden;
    position: relative;
}

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

.hero-content {
    max-width: 600px;
    padding-bottom: var(--hero-content-padding-bottom); /* Espaço para não colar no fundo */
}

.greeting {
    font-size: 1.2rem;
    display: block;
    margin-bottom: var(--spacing-internal-p);
    font-weight: 300;
}

.hero h1 {
    font-size: var(--fs-hero);
    line-height: var(--lh-tight);
    font-weight: 700;
    margin-bottom: var(--spacing-internal-p);
}

.hero p {
    font-size: var(--fs-body);
    color: #ccc;
    max-width: 400px;
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-top: var(--spacing-internal-m);
    flex-wrap: wrap;
}

.hero-link {
    color: var(--color-text-light);
    font-size: var(--fs-small);
    font-weight: 500;
    opacity: 0.85;
    border-bottom: 1px solid rgba(255, 255, 255, 0.4);
    padding-bottom: 2px;
    transition: opacity 0.3s ease, border-color 0.3s ease;
}

.hero-link:hover {
    opacity: 1;
    border-color: var(--color-text-light);
}

.hero-image {
    width: var(--media-hero-width);
    position: relative;
}

.hero-image picture {
    display: block;
}

.hero-image img {
    width: 100%;
    height: auto;
    /* Efeito de máscara para simular o corte da imagem */
    mask-image: linear-gradient(to bottom, black 80%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 80%, transparent 100%);
}

/* --- LOGOS (marquee infinita) --- */
.logos {
    padding: var(--spacing-section-p) 0;
}

/* recorte alinhado ao container: a faixa nunca passa da área do conteúdo */
.logos-viewport {
    overflow: hidden;
    /* fade suave nas bordas para o loop não parecer um corte */
    -webkit-mask-image: linear-gradient(to right, transparent, #000 4%, #000 96%, transparent);
    mask-image: linear-gradient(to right, transparent, #000 4%, #000 96%, transparent);
}

.logos-track {
    display: flex;
    align-items: center;
    width: max-content;
    animation: logos-scroll 28s linear infinite;
}

.logos-viewport:hover .logos-track {
    animation-play-state: paused;
}

.logo-item {
    flex-shrink: 0;
    /* margem à direita = espaçamento uniforme (inclusive no loop) */
    margin-right: var(--gap-between-projects);
    filter: grayscale(100%);
    opacity: 0.5;
    transition: filter 0.3s ease, opacity 0.3s ease;
}

.logo-item:hover {
    filter: grayscale(0%);
    opacity: 1;
}

@keyframes logos-scroll {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-50%);
    }
}

@media (prefers-reduced-motion: reduce) {
    .logos-track {
        animation: none;
        flex-wrap: wrap;
        width: 100%;
        justify-content: center;
        gap: var(--gap-logo);
    }

    .logos-track .logo-item[aria-hidden="true"] {
        display: none;
    }

    .logos-viewport {
        -webkit-mask-image: none;
        mask-image: none;
    }
}

/* --- PROJECTS SECTION --- */
.projects {
    padding-bottom: var(--spacing-section-m);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-internal-g);
    margin-bottom: var(--spacing-header-bottom);
}

.section-header h2 {
    font-size: var(--fs-h2);
    line-height: var(--lh-title);
    max-width: 500px;
}

.section-header p {
    max-width: 400px;
    color: var(--color-text-gray);
    font-size: var(--fs-body-sm);
    margin-top: 10px;
}

.project-item {
    display: flex;
    gap: var(--gap-project);
    align-items: center;
}

.project-item + .project-item {
    margin-top: var(--gap-between-projects);
}

.project-item.reverse {
    flex-direction: row-reverse;
}

.project-info {
    flex: 1 1 0;
    min-width: 0;
}

.project-info h3 {
    font-size: var(--fs-h3);
    margin-bottom: var(--spacing-internal-p);
}

.project-info p {
    color: var(--color-text-gray);
    margin-bottom: var(--spacing-internal-p);
    font-size: var(--fs-body-sm);
}

.tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tags span {
    border: 1px solid var(--color-border);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: var(--fs-xs);
    color: var(--color-text-gray);
}

.project-info .tags span:hover {
    border: 1px solid var(--color-text-dark);
    color: var(--color-text-dark);
    transition: all 0.3s ease-in-out;
}

.project-card .tags span:hover {
    border: 1px solid var(--color-text-light);
    color: var(--color-text-light);
    transition: all 0.3s ease-in-out;
}

.project-image {
    flex: 1 1 0;
    height: var(--media-project-height);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-image span {
    font-size: var(--fs-h3);
    font-weight: 700;
    color: #1a1a1a;
    letter-spacing: 0.5px;
}

/* Visuais de projeto (substitua por mockups reais) */
.visual-warm {
    background: linear-gradient(135deg, #f7797d 0%, #fbd786 100%);
}

.visual-violet {
    background: linear-gradient(135deg, #7f7fd5 0%, #86a8e7 50%, #91eae4 100%);
}

.placeholder {
    background-color: var(--color-placeholder);
}

/* --- SERVICES SECTION --- */
.services {
    padding-bottom: var(--spacing-section-g);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-grid);
}

.service-card .icon-box {
    width: var(--icon-box-size);
    height: var(--icon-box-size);
    background-color: var(--color-icon-bg);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: var(--spacing-internal-p);
}

.service-card .icon-box i {
    display: flex;
}

.service-card h3 {
    font-size: var(--fs-title-card);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--color-text-gray);
    font-size: var(--fs-small);
}

/* --- LAST PROJECTS (DARK) --- */
.last-projects {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: var(--spacing-section-p) 0;
}

.last-projects .section-header p {
    color: var(--color-text-muted);
}

/* Variante clara (página de projeto) */
.last-projects.on-light {
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
}

.last-projects.on-light .section-header p {
    color: var(--color-text-gray);
}

.last-projects.on-light .project-card p {
    color: var(--color-text-gray);
}

.last-projects.on-light .project-card .tags span {
    border-color: var(--color-border);
    color: var(--color-text-gray);
}

.last-projects.on-light .project-card .tags span:hover {
    border-color: var(--color-text-dark);
    color: var(--color-text-dark);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-grid-sm);
}

.project-card .card-image {
    width: 100%;
    height: var(--media-card-height);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-internal-p);
    background-color: #222;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.92);
    font-weight: 700;
    font-size: var(--fs-title-card);
    letter-spacing: 0.5px;
}

/* Visuais dos cards (substitua por capas reais) */
.project-card .visual-hosp {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 99%, #fecfef 100%);
    color: #3a1f2a;
}

.visual-coffee {
    background: linear-gradient(135deg, #4b6cb7 0%, #182848 100%);
}

.visual-app {
    background: linear-gradient(135deg, #0072ff 0%, #003a9e 100%);
}

.dark-placeholder {
    background-color: var(--color-placeholder-dark);
}

.project-card h3 {
    font-size: var(--fs-title-small);
    margin-bottom: 8px;
}

.project-card p {
    font-size: var(--fs-small);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-internal-p);
}

.project-card .tags span {
    border-color: var(--color-border-dark);
    color: #ccc;
}

/* --- TESTIMONIALS --- */
.testimonials {
    padding: var(--spacing-section-g) 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-testimonials);
}

.quote-icon {
    font-size: 3rem;
    font-family: serif;
    line-height: 1;
    display: block;
    margin-bottom: 10px;
}

.quote-text {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-internal-m);
    line-height: 1.6;
}

.author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: var(--avatar-size);
    height: var(--avatar-size);
    background-color: var(--color-bg-dark);
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.author-info {
    display: flex;
    flex-direction: column;
    font-size: var(--fs-small);
}

.author-info span {
    color: var(--color-text-gray);
    font-size: var(--fs-xs);
}

/* --- FOOTER --- */
.footer {
    padding-bottom: var(--spacing-internal-m);
    text-align: center;
}

.footer-content h2 {
    font-size: var(--fs-h2);
    margin-bottom: var(--spacing-internal-p);
    line-height: var(--lh-title);
}

.footer-content p {
    color: var(--color-text-gray);
    margin-bottom: var(--spacing-internal-m);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.footer-bottom {
    margin-top: var(--spacing-section-p);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-internal-p);
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-internal-m);
}

.social-icons {
    display: flex;
    gap: 12px;
}

.social-icons a {
    font-size: var(--fs-body-sm);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.social-icons a:hover {
    background-color: var(--color-bg-gray);
}

/* --- HEADER sobre fundo claro (páginas internas) --- */
.header-on-light {
    color: var(--color-text-dark);
}

.header-on-light .header-cta {
    color: var(--color-text-dark);
    border-color: rgba(0, 0, 0, 0.35);
}

.header-on-light .header-cta:hover {
    background-color: rgba(0, 0, 0, 0.06);
    border-color: var(--color-text-dark);
}

.header-on-light .nav-mobile summary {
    border-color: rgba(0, 0, 0, 0.35);
}

.header-on-light .burger,
.header-on-light .burger::before,
.header-on-light .burger::after {
    background-color: var(--color-text-dark);
}

/* --- PÁGINA DE PROJETO (fundo branco) --- */
.project-hero {
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    padding-top: calc(var(--hero-padding-top) + 40px);
    padding-bottom: var(--spacing-section-p);
}

.project-back {
    display: inline-block;
    font-size: var(--fs-small);
    color: var(--color-text-gray);
    margin-bottom: var(--spacing-internal-m);
    transition: color 0.3s ease;
}

.project-back:hover {
    color: var(--color-text-dark);
}

.project-hero h1 {
    font-size: var(--fs-hero);
    line-height: var(--lh-tight);
    font-weight: 700;
    margin-bottom: var(--spacing-internal-p);
    letter-spacing: -0.02em;
}

.gallery-item {
    height: clamp(260px, 45vw, 520px);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--color-placeholder);
    color: #1a1a1a;
    font-size: var(--fs-h3);
    font-weight: 700;
    letter-spacing: 0.5px;
}

.gallery-item + .gallery-item {
    margin-top: var(--gap-between-projects);
}

.gallery-item.visual-hosp {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 99%, #fecfef 100%);
    color: #3a1f2a;
}

/* =========================================================
   RESPONSIVIDADE
   Todo o ajuste fino acontece nos TOKENS.
   ========================================================= */

/* --- TABLET / MOBILE GRANDE --- */
@media (max-width: 900px) {
    :root {
        /* Tipografia */
        --fs-hero: 3.5rem;
        --fs-h2: 2rem;
        --fs-h3: 1.5rem;
        --fs-body: 1rem;

        /* Espaçamentos entre seções */
        --spacing-section-g: 96px;
        --spacing-section-m: 88px;
        --spacing-section-p: 72px;

        /* Espaçamentos internos */
        --spacing-header-bottom: 48px;
        --spacing-internal-g: 32px;
        --spacing-internal-m: 32px;

        /* Gaps */
        --gap-grid: 32px;
        --gap-grid-sm: 40px;   /* cards empilhados: respiro vertical entre blocos */
        --gap-project: 32px;
        --gap-between-projects: 64px;
        --gap-testimonials: 48px;

        /* Mídia */
        --media-project-height: 300px;
        --media-card-height: 220px;
        --media-hero-width: 100%;

        /* Header / Hero */
        --hero-padding-top: 132px;
        --hero-content-padding-bottom: 48px;
    }

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

    .hero-content {
        margin: 0 auto;
    }

    .hero p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .section-header {
        flex-direction: column;
        gap: var(--spacing-internal-p);
    }

    /* empilhado, o flex-gap já faz o papel do margin-top do parágrafo:
       manter os dois somaria 2 espaçamentos e colaria título/subtítulo */
    .section-header p {
        margin-top: 0;
    }

    /* display em tela menor pede tracking um pouco mais fechado */
    .hero h1 {
        letter-spacing: -0.02em;
    }

    .section-header h2 {
        letter-spacing: -0.01em;
    }

    /* >>> CORREÇÃO MOBILE <<<
       column-reverse: a imagem (último filho no DOM) sobe para o topo
       e o texto (primeiro filho no DOM) desce. Vale para .project-item
       e .project-item.reverse, pois ambos viram coluna no mobile. */
    .project-item,
    .project-item.reverse {
        flex-direction: column-reverse;
        gap: var(--gap-project);
    }

    /* >>> CORREÇÃO DO BUG DAS IMAGENS <<<
       Em coluna, `flex: 1` = flex-basis 0% → altura zero.
       Liberamos o basis e devolvemos a altura via token. */
    .project-item .project-info {
        flex: 0 0 auto;
        width: 100%;
    }

    .project-item .project-image {
        flex: 0 0 auto;
        width: 100%;
        height: var(--media-project-height);
    }

    /* >>> SERVIÇOS: carrossel arrastável <<<
       Em vez de empilhar, os cards viram uma faixa horizontal
       com scroll-snap. A margem negativa à direita deixa os cards
       correrem até a borda da tela; o padding devolve o respiro
       depois do último. */
    .services-grid {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        overscroll-behavior-x: contain;
        -webkit-overflow-scrolling: touch;
        gap: var(--gap-grid);
        margin-right: calc(var(--container-padding) * -1);
        padding-right: var(--container-padding);
        scrollbar-width: none;
    }

    .services-grid::-webkit-scrollbar {
        display: none;
    }

    .service-card {
        flex: 0 0 clamp(260px, 100% - 56px, 360px);
        scroll-snap-align: start;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: var(--spacing-internal-m);
        background-color: var(--color-bg-light);
    }

    .services-grid:focus-visible {
        outline: 2px solid var(--color-text-dark);
        outline-offset: 3px;
    }

    .projects-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* --- MOBILE --- */
@media (max-width: 600px) {
    :root {
        /* Tipografia — clamp() evita títulos desproporcionais em 320px
           e mantém a escala cheia a partir de ~400px */
        --fs-hero: clamp(2.25rem, 9.5vw, 2.5rem);
        --fs-h2: clamp(1.5rem, 7.2vw, 1.75rem);
        --fs-h3: 1.4rem;
        --fs-title-card: 1.1rem;
        --fs-title-small: 1rem;
        --fs-body-sm: 1rem;    /* subtítulos de seção e descrições: 15.2 → 16px */
        --fs-small: 0.95rem;   /* botões e descrições: 14.4 → 15.2px */
        --fs-xs: 0.85rem;      /* tags: 12.8 → 13.6px */
        --lh-tight: 1.15;      /* H1 multilinha respira mais em tela pequena */
        --lh-title: 1.25;      /* H2/H3 multilinha idem */

        /* Layout — margem lateral escala com a tela:
           20px em 320px, 24px a partir de 480px */
        --container-padding: clamp(20px, 5vw, 24px);

        /* Espaçamentos entre seções — escala 64 / 80 / 88 */
        --spacing-section-g: 88px;
        --spacing-section-m: 80px;
        --spacing-section-p: 64px;

        /* Espaçamentos internos */
        --spacing-header-bottom: 44px; /* subtítulo → conteúdo: era 32 */
        --spacing-internal-m: 28px;    /* blocos dentro da seção: era 24 */
        --spacing-internal-p: 16px;    /* elementos relacionados */

        /* Gaps */
        --gap-nav: 20px;
        --gap-grid: 24px;
        --gap-logo: 24px;
        --gap-between-projects: 56px;
        --gap-project: 28px;           /* imagem ↔ texto: era 24 */

        /* Componentes — padding-y 12px ≈ 47px de altura (mín. toque 44px) */
        --btn-padding-y: 12px;
        --btn-padding-x: 20px;

        /* Mídia */
        --media-project-height: 220px;
        --media-card-height: 200px;
        --icon-box-size: 44px;

        /* Header / Hero */
        --header-padding-y: 16px;
        --hero-padding-top: 104px;
        --hero-content-padding-bottom: 32px;
    }

    /* Header: mantém em linha e enxuga a navegação */
    .header-container {
        flex-wrap: nowrap;
    }

    .nav {
        display: none; /* escondido no mobile — use o menu hambúrguer */
    }

    .nav-mobile {
        display: block;
    }

    .header-cta {
        display: none; /* o CTA principal do mobile está no hero e no menu */
    }

    .hero-cta {
        justify-content: center;
        gap: 24px;
    }

    .logos-track {
        animation-duration: 18s;
    }

    /* Alvos de toque: mínimo confortável de 44×44 */
    .nav-mobile summary {
        width: 44px;
        height: 44px;
    }

    .social-icons a {
        width: 44px;
        height: 44px;
    }

    /* título → descrição no card escuro */
    .project-card h3 {
        margin-bottom: 12px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-internal-p);
    }
}

/* =========================================================
   MOBILE — PÁGINA DE PROJETO (.page-project)
   Só afeta projeto.html. Escala de ritmo vertical:
   pequeno = elementos relacionados        (--spacing-internal-p)
   médio   = blocos dentro da mesma seção  (--spacing-internal-m)
   grande   = header/título -> conteúdo    (--spacing-header-bottom)
   extra   = separação entre seções        (--spacing-section-p)
   ========================================================= */

@media (max-width: 900px) {
    .page-project {
        --spacing-section-p: 80px;
        --spacing-header-bottom: 56px;
        --spacing-internal-m: 40px;
        --spacing-internal-p: 20px;
        --gap-between-projects: 72px;
        --gap-grid-sm: 48px;
    }
}

@media (max-width: 600px) {
    .page-project {
        --spacing-section-p: 72px;
        --spacing-header-bottom: 52px;
        --spacing-internal-m: 32px;
        --spacing-internal-p: 20px;
        --gap-between-projects: 64px;
    }

    /* --- Tipografia: leitura confortável sem perder hierarquia --- */
    .page-project .project-hero h1 {
        text-wrap: balance;
    }

    .page-project .section-header h2 {
        text-wrap: balance;
    }

    .page-project .section-header p,
    .page-project .project-card p,
    .page-project .footer-content p {
        line-height: 1.6;
    }

    .page-project .project-card p {
        font-size: var(--fs-body-sm);
    }

    /* --- Link "voltar": alvo de toque confortável --- */
    .page-project .project-back {
        display: inline-flex;
        align-items: center;
        padding: 8px 0;
        margin-bottom: calc(var(--spacing-internal-m) - 8px);
    }

    /* --- Tags com respiro entre si --- */
    .page-project .tags {
        gap: 12px;
    }

    /* --- Galeria: altura acompanha a tela em vez de ficar fixa --- */
    .page-project .gallery-item {
        height: clamp(280px, 78vw, 400px);
    }

    /* --- CTA do rodapé: alvo de toque >= 44px --- */
    .page-project .footer-content .btn {
        padding: 14px 28px;
        font-size: var(--fs-body-sm);
    }
}