/* ==========================================================================
   Serralheria Amaral — Design tokens
   ========================================================================== */
:root {
  --ink: #15181d;
  --ink-soft: #20242b;
  --steel: #4b5560;
  --steel-light: #757e89;
  --line: #e3e0d7;
  --paper: #faf8f4;
  --paper-alt: #f1ede3;
  --white: #ffffff;
  --accent: #b85a1e;
  --accent-dark: #8f4516;
  --accent-soft: #f3e2d1;
  --whatsapp: #25d366;
  --whatsapp-dark: #1ea952;

  --container: 1180px;
  --gutter: 20px;
  --radius-s: 4px;
  --radius-m: 10px;
  --shadow-card: 0 16px 32px -20px rgba(21, 24, 29, 0.35);
  --shadow-pop: 0 20px 45px -18px rgba(21, 24, 29, 0.45);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ==========================================================================
   Reset / base
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, p {
  margin: 0;
}

h1, h2, h3 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-s);
  z-index: 200;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ==========================================================================
   Layout helpers
   ========================================================================== */
.section {
  padding: 64px 0;
}

.section-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.bg-paper { background: var(--paper); }
.bg-paper-alt { background: var(--paper-alt); }
.bg-ink { background: var(--ink); color: #fff; }
.bg-white { background: var(--white); }

.section-head {
  max-width: 640px;
  margin-bottom: 36px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 4.4vw, 2.3rem);
  margin-bottom: 14px;
}

.section-head p {
  color: var(--steel);
  font-size: 1.02rem;
  line-height: 1.65;
}

.bg-ink .section-head p { color: #c4c9d0; }

.lead-highlight {
  font-size: clamp(1.15rem, 2.6vw, 1.4rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  border-left: 3px solid var(--accent);
  padding-left: 18px;
  margin-top: 24px;
}

.bg-ink .lead-highlight { color: #fff; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.96rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-dark); }

.btn-whatsapp {
  background: var(--whatsapp);
  color: #fff;
}
.btn-whatsapp:hover { background: var(--whatsapp-dark); }

.btn-outline {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: #fff; }

.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  padding: 10px 4px;
  border-radius: 0;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--accent);
}

.btn-block { width: 100%; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 76px;
  display: flex;
  align-items: center;
  background: rgba(21, 24, 29, 0.97);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .section-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 800;
  font-size: 1.22rem;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.brand img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.brand-name { line-height: 1.15; }
.brand-name small {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #9aa1ab;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.main-nav a {
  color: #d7dade;
  font-weight: 600;
  font-size: 0.94rem;
  transition: color 0.15s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: #fff;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-cta .btn-whatsapp {
  padding: 10px 18px;
  font-size: 0.88rem;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: transparent;
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  background: #fff;
  transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease;
}

.nav-toggle span { top: 20px; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }

body.menu-open .nav-toggle span { background: transparent; }
body.menu-open .nav-toggle span::before { top: 0; transform: rotate(45deg); background: #fff; }
body.menu-open .nav-toggle span::after { top: 0; transform: rotate(-45deg); background: #fff; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 17, 21, 0) 0%, rgba(15, 17, 21, 0) 45%, rgba(15, 17, 21, 0.2) 70%, rgba(15, 17, 21, 0.62) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 140px 0 40px;
  width: 100%;
}

.hero h1 {
  font-size: clamp(2rem, 7vw, 3.4rem);
  max-width: 15ch;
  margin-bottom: 18px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.75), 0 10px 30px rgba(0, 0, 0, 0.65);
}

.hero-text {
  max-width: 46ch;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  color: #fff;
  line-height: 1.6;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8), 0 6px 18px rgba(0, 0, 0, 0.6);
}

.hero-quickfacts {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #cfd3d8;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.hero-quickfacts span:not(:last-child)::after {
  content: "·";
  margin-left: 10px;
  color: var(--accent);
}

/* ==========================================================================
   Diferenciais
   ========================================================================== */
.diff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.diff-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 26px 24px;
}

.diff-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.diff-card .icon svg { width: 22px; height: 22px; }

.diff-card h3 {
  font-size: 1.06rem;
  margin-bottom: 8px;
}

.diff-card p {
  color: var(--steel);
  font-size: 0.94rem;
  line-height: 1.6;
}

/* ==========================================================================
   Soluções
   ========================================================================== */
.solucoes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.solucao-card {
  background: var(--white);
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.solucao-card .thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.solucao-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.solucao-card:hover .thumb img { transform: scale(1.05); }

.solucao-card .body { padding: 20px 22px 24px; }

.solucao-card h3 {
  font-size: 1.04rem;
  margin-bottom: 8px;
}

.solucao-card p {
  color: var(--steel);
  font-size: 0.92rem;
  line-height: 1.6;
}

.solucoes-cta {
  margin-top: 44px;
  text-align: center;
  background: var(--paper-alt);
  border: 1px dashed var(--line);
  border-radius: var(--radius-m);
  padding: 34px 24px;
}

.solucoes-cta p {
  color: var(--steel);
  max-width: 46ch;
  margin: 8px auto 0;
  line-height: 1.6;
}

.solucoes-cta strong { color: var(--ink); }

/* ==========================================================================
   Portfólio / galeria
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-s);
  overflow: hidden;
  background: var(--ink-soft);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img { transform: scale(1.06); }

.gallery-item .cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px 14px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(180deg, rgba(15, 17, 21, 0) 0%, rgba(15, 17, 21, 0.82) 100%);
}

.gallery-cta {
  text-align: center;
  margin-top: 34px;
}

/* ==========================================================================
   Profissionais
   ========================================================================== */
.pro-section .section-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.pro-media {
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow-pop);
}

.pro-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.pro-text .lead-highlight {
  margin: 22px 0 26px;
}

/* ==========================================================================
   História
   ========================================================================== */
.historia-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.historia-text p {
  color: var(--steel);
  line-height: 1.7;
  margin-bottom: 14px;
}

.historia-text strong { color: var(--ink); }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.stat-card {
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius-m);
  padding: 22px 14px;
  text-align: center;
}

.stat-card .num {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  color: #f0a978;
  display: block;
  margin-bottom: 6px;
}

.stat-card .label {
  font-size: 0.76rem;
  color: #c4c9d0;
  line-height: 1.4;
}

/* ==========================================================================
   Prova social
   ========================================================================== */
.testi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.testi-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 26px 24px;
}

.testi-card .quote-mark {
  color: var(--accent);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  display: block;
  margin-bottom: 6px;
}

.testi-card p.quote {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 16px;
}

.testi-card .who {
  font-weight: 700;
  font-size: 0.92rem;
}

.testi-card .where {
  font-size: 0.82rem;
  color: var(--steel);
}

.testi-cta {
  text-align: center;
  margin-top: 8px;
}

/* ==========================================================================
   Filosofia
   ========================================================================== */
.filo-section .section-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.filo-media {
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.filo-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.filo-text p {
  color: var(--steel);
  line-height: 1.75;
  margin-bottom: 12px;
  font-size: 1.02rem;
}

/* ==========================================================================
   CTA final
   ========================================================================== */
.cta-final {
  text-align: center;
}

.cta-final .section-inner { max-width: 720px; }

.cta-final h2 {
  font-size: clamp(1.7rem, 4.6vw, 2.4rem);
  margin-bottom: 16px;
}

.cta-final p {
  color: #c4c9d0;
  line-height: 1.7;
  font-size: 1.02rem;
}

.cta-final .cta-row {
  justify-content: center;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding: 56px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand .brand { margin-bottom: 10px; }

.footer-brand p {
  color: #aeb4bb;
  font-size: 0.92rem;
  line-height: 1.6;
  max-width: 34ch;
}

.footer-col h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #88919b;
  margin-bottom: 14px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col a {
  color: #d7dade;
  font-size: 0.94rem;
  transition: color 0.15s ease;
}

.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  align-items: center;
  color: #838a93;
  font-size: 0.82rem;
}

/* ==========================================================================
   Floating WhatsApp button (mobile)
   ========================================================================== */
.wa-float {
  position: fixed;
  right: 16px;
  bottom: 18px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--whatsapp);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 26px -8px rgba(37, 211, 102, 0.65);
  z-index: 90;
}

.wa-float svg { width: 28px; height: 28px; }

@media (min-width: 992px) {
  .wa-float { display: none; }
}

/* ==========================================================================
   Mobile nav drawer
   ========================================================================== */
@media (max-width: 991.98px) {
  .nav-toggle { display: block; }

  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ink);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 30px var(--gutter);
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.28s ease;
    overflow-y: auto;
  }

  body.menu-open .main-nav {
    transform: translateX(0);
  }

  .main-nav a {
    display: block;
    width: 100%;
    padding: 16px 4px;
    font-size: 1.15rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .main-nav .header-cta {
    margin-top: 20px;
  }

  .main-nav .header-cta .btn { width: 100%; }

  .header-cta > .btn-whatsapp { display: none; }
}

@media (min-width: 992px) {
  .main-nav .header-cta { display: none; }
}

/* ==========================================================================
   Responsive layout upgrades
   ========================================================================== */
@media (min-width: 600px) {
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .solucoes-grid { grid-template-columns: repeat(2, 1fr); }
  .testi-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
  .section { padding: 88px 0; }
  .historia-grid { grid-template-columns: 1.1fr 0.9fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}

@media (min-width: 992px) {
  :root { --gutter: 32px; }

  .diff-grid { grid-template-columns: repeat(3, 1fr); }
  .solucoes-grid { grid-template-columns: repeat(4, 1fr); }
  .gallery-grid { grid-template-columns: repeat(4, 1fr); }
  .testi-grid { grid-template-columns: repeat(4, 1fr); }

  .pro-section .section-inner {
    grid-template-columns: 1fr 1fr;
  }
  .pro-media { order: 1; }
  .pro-text { order: 2; }

  .filo-section .section-inner {
    grid-template-columns: 0.85fr 1.15fr;
  }

  .hero-content { padding: 160px 0 64px; }
}