/* =====================================================================
   CONSTRUTORA — Tema do site
   Identidade: betão carvão + âmbar de sinalização + linguagem de planta
   Tipos: Anton (placas), Inter (texto), Space Mono (cotas/rótulos)
   ===================================================================== */

:root {
    --concrete-900: #14181d;
    --concrete-850: #181d24;
    --concrete-800: #1c232b;
    --concrete-700: #2a333d;
    --concrete-600: #3a4651;
    --amber:        #f5a524;
    --amber-600:    #d98a0b;
    --paper:        #f4f2ec;
    --paper-2:      #ece9e0;
    --ink:          #11151a;
    --muted:        #8c97a3;
    --muted-light:  #b7c0c9;
    --white:        #ffffff;

    --font-display: "Anton", Impact, sans-serif;
    --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono:    "Space Mono", ui-monospace, "Courier New", monospace;

    --shadow-md: 0 14px 40px rgba(10, 14, 18, .12);
    --shadow-lg: 0 24px 70px rgba(10, 14, 18, .22);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--ink);
    background: var(--paper);
    margin: 0;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

a { color: var(--amber-600); text-decoration: none; }
a:hover { color: var(--ink); }

/* ---- Tipografia ---------------------------------------------------- */
h1, h2, h3, .display {
    font-family: var(--font-display);
    font-weight: 400;
    letter-spacing: .01em;
    line-height: .98;
    text-transform: uppercase;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: .78rem;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--amber-600);
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: 1rem;
}
.eyebrow::before {
    content: "";
    width: 28px; height: 2px;
    background: var(--amber);
    display: inline-block;
}
.eyebrow.on-dark { color: var(--amber); }

.section { padding: 6rem 0; position: relative; }
.section-dark { background: var(--concrete-900); color: var(--paper); }
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--white); }
.section-paper-2 { background: var(--paper-2); }

.lead-muted { color: var(--muted); font-size: 1.05rem; max-width: 60ch; }
.section-dark .lead-muted { color: var(--muted-light); }

.section-title { font-size: clamp(2rem, 4.5vw, 3.4rem); margin: 0 0 1.2rem; }

/* Numeração de secção (linguagem de projeto) */
.sec-index {
    font-family: var(--font-mono);
    color: var(--amber-600);
    font-size: .8rem;
    letter-spacing: .15em;
}

/* ---- Navbar -------------------------------------------------------- */
.site-nav {
    background: rgba(20, 24, 29, .92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--concrete-700);
}
.site-nav .navbar-brand {
    font-family: var(--font-display);
    font-size: 1.5rem;
    text-transform: uppercase;
    color: var(--white) !important;
    letter-spacing: .02em;
    display: flex; align-items: center; gap: .55rem;
}
.brand-mark {
    width: 34px; height: 34px; border-radius: 7px;
    background: var(--amber); color: var(--concrete-900);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
}
.site-nav .nav-link {
    color: var(--muted-light) !important;
    font-size: .82rem;
    font-weight: 600;
    letter-spacing: .02em;
    padding: .5rem .8rem !important;
    text-transform: uppercase;
}
.site-nav .nav-link:hover,
.site-nav .nav-link.active { color: var(--white) !important; }
.site-nav .nav-link.active { position: relative; }
.site-nav .nav-link.active::after {
    content: ""; position: absolute; left: .8rem; right: .8rem; bottom: .15rem;
    height: 2px; background: var(--amber);
}
.btn-quote {
    background: var(--amber); color: var(--concrete-900) !important;
    font-weight: 700; text-transform: uppercase; letter-spacing: .03em;
    border-radius: 4px; padding: .55rem 1.1rem !important;
}
.btn-quote:hover { background: var(--white); }

/* Offcanvas mobile */
.offcanvas { background: var(--concrete-900); color: var(--paper); }
.offcanvas .nav-link { color: var(--muted-light) !important; padding: .7rem 0 !important; }
.offcanvas .nav-link.active { color: var(--amber) !important; }

/* ---- Botões -------------------------------------------------------- */
.btn-amber {
    background: var(--amber); color: var(--concrete-900);
    border: none; font-weight: 700; text-transform: uppercase;
    letter-spacing: .03em; border-radius: 4px; padding: .8rem 1.6rem;
    transition: transform .15s ease, background .15s ease;
}
.btn-amber:hover { background: var(--amber-600); color: var(--concrete-900); transform: translateY(-2px); }
.btn-outline-light-2 {
    background: transparent; color: var(--white);
    border: 1.5px solid var(--concrete-600); font-weight: 700;
    text-transform: uppercase; letter-spacing: .03em; border-radius: 4px;
    padding: .8rem 1.6rem; transition: border-color .15s ease;
}
.btn-outline-light-2:hover { border-color: var(--amber); color: var(--white); }

/* ---- Hero ---------------------------------------------------------- */
.hero {
    position: relative;
    background: var(--concrete-900);
    color: var(--paper);
    padding: 9rem 0 7rem;
    overflow: hidden;
}
/* Grelha de planta (blueprint) */
.hero::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(245,165,36,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245,165,36,.06) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(ellipse 80% 80% at 70% 30%, #000 30%, transparent 80%);
    pointer-events: none;
}
.hero::after {
    content: "";
    position: absolute; top: -20%; right: -10%;
    width: 540px; height: 540px;
    background: radial-gradient(circle, rgba(245,165,36,.16), transparent 60%);
    pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; }
.hero h1 {
    font-size: clamp(2.8rem, 8vw, 6rem);
    margin: 0 0 1.4rem;
    color: var(--white);
}
.hero h1 .amber { color: var(--amber); }
.hero p { color: var(--muted-light); font-size: 1.15rem; max-width: 52ch; }

/* Cota técnica decorativa no hero */
.dimension {
    font-family: var(--font-mono); color: var(--amber);
    font-size: .75rem; letter-spacing: .15em;
    display: inline-flex; align-items: center; gap: .5rem; margin-bottom: 1.2rem;
}
.dimension::before, .dimension::after { content: "|"; opacity: .6; }
.dimension span { border-top: 1px dashed rgba(245,165,36,.5); padding: 0 .4rem; }

/* ---- Faixa de estatísticas ---------------------------------------- */
.stats { background: var(--concrete-850); color: var(--paper); }
.stat { padding: 2.4rem 1rem; text-align: center; border-right: 1px solid var(--concrete-700); }
.stat:last-child { border-right: none; }
.stat .num { font-family: var(--font-display); font-size: 3rem; color: var(--amber); line-height: 1; }
.stat .lbl { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .18em;
    text-transform: uppercase; color: var(--muted-light); margin-top: .6rem; }

/* ---- Cartões de serviço ------------------------------------------- */
.service-card {
    background: var(--white); border: 1px solid var(--paper-2);
    border-radius: 8px; padding: 2rem 1.7rem; height: 100%;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    position: relative; overflow: hidden;
}
.service-card::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
    background: var(--amber); transform: scaleY(0); transform-origin: top;
    transition: transform .2s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--amber); }
.service-card:hover::before { transform: scaleY(1); }
.service-icon {
    width: 56px; height: 56px; border-radius: 8px;
    background: var(--concrete-900); color: var(--amber);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 1.6rem; margin-bottom: 1.2rem;
}
.service-card h3 { font-family: var(--font-body); font-weight: 800; font-size: 1.15rem;
    text-transform: none; letter-spacing: 0; margin-bottom: .5rem; color: var(--ink); }
.service-card p { color: var(--muted); font-size: .95rem; margin: 0; }
a.service-card { color: inherit; }
.link-amber { color: var(--amber-600); font-weight: 700; font-size: .9rem;
    font-family: var(--font-mono); letter-spacing: .02em; }
.link-amber i { transition: transform .18s ease; }
a.service-card:hover .link-amber i { transform: translateX(4px); }

/* ---- Media placeholder (sem imagem) ------------------------------- */
.media {
    position: relative; aspect-ratio: 4 / 3; overflow: hidden;
    background: var(--concrete-800); border-radius: 8px;
}
.media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.media-ph {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    background:
        repeating-linear-gradient(45deg, var(--concrete-800), var(--concrete-800) 14px, var(--concrete-850) 14px, var(--concrete-850) 28px);
    color: var(--concrete-600); font-size: 2.6rem;
}
.media-ph i { color: rgba(245,165,36,.45); }

/* ---- Cartões de obra ---------------------------------------------- */
.work-card { display: block; color: inherit; }
.work-card .media { border-radius: 8px; }
.work-card:hover img { transform: scale(1.05); }
.work-card .media img { transition: transform .4s ease; }
.work-card h3 { font-family: var(--font-body); font-weight: 800; text-transform: none;
    letter-spacing: 0; font-size: 1.15rem; margin: 1rem 0 .25rem; color: var(--ink); }
.work-card .meta { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .1em;
    text-transform: uppercase; color: var(--muted); }
.badge-status {
    position: absolute; top: .8rem; left: .8rem; z-index: 2;
    font-family: var(--font-mono); font-size: .68rem; letter-spacing: .1em;
    text-transform: uppercase; padding: .25rem .6rem; border-radius: 3px;
    background: var(--amber); color: var(--concrete-900); font-weight: 700;
}
.badge-status.em_curso { background: var(--white); }
.badge-status.planeada { background: var(--concrete-600); color: var(--white); }

/* ---- Pessoas (equipa / sócios) ------------------------------------ */
.person { text-align: center; }
.person .avatar {
    width: 100%; aspect-ratio: 1; border-radius: 8px; overflow: hidden;
    background: var(--concrete-800); position: relative; margin-bottom: 1rem;
}
.person .avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-ph {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display); font-size: 2.6rem; color: var(--amber);
    background: linear-gradient(160deg, var(--concrete-800), var(--concrete-900));
}
.person h3 { font-family: var(--font-body); font-weight: 800; text-transform: none;
    letter-spacing: 0; font-size: 1.1rem; margin: 0; }
.person .role { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .1em;
    text-transform: uppercase; color: var(--amber-600); margin: .3rem 0 .6rem; }
.person p { color: var(--muted); font-size: .92rem; }

/* ---- Galeria ------------------------------------------------------- */
.gal-filter { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .08em;
    text-transform: uppercase; background: transparent; border: 1px solid var(--paper-2);
    color: var(--muted); padding: .4rem .9rem; border-radius: 3px; cursor: pointer; }
.gal-filter.active, .gal-filter:hover { background: var(--concrete-900); color: var(--white); border-color: var(--concrete-900); }
.gal-item .media { cursor: pointer; }

/* ---- Formulários --------------------------------------------------- */
.form-panel { background: var(--white); border: 1px solid var(--paper-2); border-radius: 10px; padding: 2.5rem; box-shadow: var(--shadow-md); }
.form-label { font-weight: 600; font-size: .85rem; color: var(--ink); }
.form-control, .form-select {
    border: 1px solid #d8d4c8; border-radius: 5px; padding: .7rem .9rem; background: var(--paper);
}
.form-control:focus, .form-select:focus {
    border-color: var(--amber); box-shadow: 0 0 0 .2rem rgba(245,165,36,.18); background: var(--white);
}
.form-control.is-invalid { border-color: #dc3545; }
.field-error { color: #dc3545; font-size: .8rem; margin-top: .25rem; }

/* ---- Faixa CTA ----------------------------------------------------- */
.cta-band { background: var(--amber); color: var(--concrete-900); }
.cta-band h2 { color: var(--concrete-900); }
.cta-band .btn-amber { background: var(--concrete-900); color: var(--amber); }
.cta-band .btn-amber:hover { background: var(--concrete-800); }

/* ---- Page header --------------------------------------------------- */
.page-head { background: var(--concrete-900); color: var(--paper); padding: 6rem 0 4rem; position: relative; overflow: hidden; }
.page-head::before {
    content: ""; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(245,165,36,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245,165,36,.05) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse 70% 90% at 80% 20%, #000 30%, transparent 75%);
}
.page-head h1 { font-size: clamp(2.4rem, 6vw, 4rem); color: var(--white); position: relative; }
.breadcrumb-mono { font-family: var(--font-mono); font-size: .76rem; letter-spacing: .12em;
    text-transform: uppercase; color: var(--muted); position: relative; }
.breadcrumb-mono a { color: var(--muted-light); }
.breadcrumb-mono a:hover { color: var(--amber); }

/* ---- Footer -------------------------------------------------------- */
.site-footer { background: var(--concrete-900); color: var(--muted-light); padding: 4.5rem 0 2rem; }
.site-footer h4 { font-family: var(--font-body); font-weight: 800; text-transform: uppercase;
    font-size: .85rem; letter-spacing: .1em; color: var(--white); margin-bottom: 1.2rem; }
.site-footer a { color: var(--muted-light); display: inline-block; padding: .2rem 0; }
.site-footer a:hover { color: var(--amber); }
.footer-brand { font-family: var(--font-display); font-size: 1.7rem; color: var(--white); text-transform: uppercase; }
.social-ico { width: 38px; height: 38px; border-radius: 6px; border: 1px solid var(--concrete-700);
    display: inline-flex; align-items: center; justify-content: center; color: var(--muted-light); margin-right: .4rem; }
.social-ico:hover { background: var(--amber); color: var(--concrete-900); border-color: var(--amber); }
.footer-bottom { border-top: 1px solid var(--concrete-700); margin-top: 3rem; padding-top: 1.5rem;
    font-family: var(--font-mono); font-size: .74rem; letter-spacing: .06em; color: var(--muted); }

/* ---- Reveal animação ---------------------------------------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---- Util ---------------------------------------------------------- */
.divider-tick { display: flex; align-items: center; gap: 1rem; color: var(--concrete-700); }
.divider-tick::before, .divider-tick::after { content: ""; flex: 1; height: 1px; background: currentColor; }

@media (max-width: 767.98px) {
    .section { padding: 4rem 0; }
    .stat { border-right: none; border-bottom: 1px solid var(--concrete-700); }
    .stat:last-child { border-bottom: none; }
}

@media (prefers-reduced-motion: reduce) {
    * { scroll-behavior: auto !important; }
    .reveal { opacity: 1; transform: none; transition: none; }
}