/* Atlántico Steel — sistema visual base */

:root {
  --cream: #e8e1d6;
  --cream-soft: #f3efe7;
  --white: #fffdfa;
  --terracota: #b08d6a;
  --terracota-dark: #8f6f4f;
  --olive: #5c6b47;
  --olive-dark: #475336;
  --steel-900: #1c1b19;
  --steel-800: #26241f;
  --steel-700: #34322b;
  --silver: #c9c2b4;
  --ink: #2b2620;
  --ink-soft: #55503f;
  --radius: 14px;
  --shadow: 0 18px 40px -20px rgba(28, 27, 25, 0.35);
  --max: 1180px;
  --font-head: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--ink);
}

h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--ink-soft); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--terracota-dark);
  margin-bottom: 0.6em;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 88px 0; }
.section--soft { background: var(--cream-soft); }
.section--dark { background: var(--steel-900); color: var(--silver); }
.section--dark h2, .section--dark h3 { color: var(--white); }
.section--dark p { color: var(--silver); }
.section--tight { padding: 56px 0; }

@media (max-width: 780px) {
  .section { padding: 56px 0; }
  .section--tight { padding: 40px 0; }
  .page-banner { padding: 56px 0 44px; }
}

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: 999px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--terracota);
  color: var(--white);
  box-shadow: 0 14px 28px -14px rgba(176, 141, 106, 0.7);
}
.btn--primary:hover { background: var(--terracota-dark); }

.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: inherit;
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.08); }

.btn--dark {
  background: var(--steel-900);
  color: var(--white);
}
.btn--dark:hover { background: var(--steel-700); }

.btn--whatsapp {
  background: var(--olive);
  color: var(--white);
  box-shadow: 0 14px 28px -14px rgba(92, 107, 71, 0.7);
}
.btn--whatsapp:hover { background: var(--olive-dark); }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--steel-900);
  border-bottom: 1px solid rgba(201, 194, 180, 0.15);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 46px; height: 46px; border-radius: 50%; }
.brand-name {
  font-family: var(--font-head);
  font-weight: 800;
  color: var(--white);
  font-size: 1.02rem;
  letter-spacing: 0.03em;
  line-height: 1.1;
}
.brand-name span {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--silver);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

.nav { display: flex; align-items: center; gap: 34px; }
.nav-links { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--silver);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--white);
  border-color: var(--terracota);
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 12px;
  margin: -12px -12px -12px 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

@media (max-width: 860px) {
  .nav-links {
    position: absolute;
    top: 82px;
    left: 0;
    right: 0;
    background: var(--steel-900);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    border-bottom: 1px solid rgba(201, 194, 180, 0.15);
  }
  .nav-links.is-open { max-height: 420px; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 16px 24px; border-bottom: 1px solid rgba(201, 194, 180, 0.08); }
  .nav .btn--primary { display: none; }
  .nav-toggle { display: block; }
}

/* Hero */
.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  color: var(--white);
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(28, 27, 25, 0.35) 0%, rgba(28, 27, 25, 0.55) 55%, rgba(28, 27, 25, 0.92) 100%);
}
.hero-content { position: relative; z-index: 1; padding: 64px 0 72px; }
.hero .eyebrow { color: var(--cream); }
.hero h1 { color: var(--white); max-width: 820px; }
.hero p.lead { color: var(--cream); max-width: 560px; font-size: 1.1rem; }

.hero--compact { min-height: 46vh; }

.page-banner {
  background: var(--steel-900);
  color: var(--white);
  padding: 76px 0 60px;
}
.page-banner .eyebrow { color: var(--cream); }
.page-banner h1 { color: var(--white); }
.page-banner p.lead { color: var(--silver); max-width: 600px; font-size: 1.05rem; }

/* Value props */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.value-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 26px;
  box-shadow: var(--shadow);
}
.value-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--cream-soft);
  border: 1px solid var(--terracota);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--olive);
}
.value-icon svg { width: 26px; height: 26px; }

@media (max-width: 780px) {
  .value-grid { grid-template-columns: 1fr; }
}

/* Model cards */
.model-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.model-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.model-card img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.model-card__body { padding: 26px; flex: 1; display: flex; flex-direction: column; }
.model-card__tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--olive);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.model-card ul { margin: 0 0 18px; padding-left: 20px; color: var(--ink-soft); }
.model-card ul li { margin-bottom: 4px; }
.model-card__body .btn { margin-top: auto; align-self: flex-start; }

@media (max-width: 780px) {
  .model-grid { grid-template-columns: 1fr; }
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 220px;
  gap: 14px;
}
.gallery figure { margin: 0; position: relative; overflow: hidden; border-radius: 10px; }
.gallery img { width: 100%; height: 100%; object-fit: cover; }
.gallery figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 10px 14px;
  background: linear-gradient(0deg, rgba(28,27,25,0.75), transparent);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 600;
}
.gallery .span-2 { grid-column: span 2; }
.gallery .span-2-row { grid-row: span 2; }

@media (max-width: 900px) {
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
  .gallery .span-2 { grid-column: span 2; }
}
@media (max-width: 560px) {
  .gallery { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .gallery figure { aspect-ratio: 4 / 3; }
  .gallery .span-2 { grid-column: span 1; }
  .gallery .span-2-row { grid-row: span 1; }
}

/* Plano técnico */
.plano-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  text-align: center;
}
.plano-card img { margin: 0 auto 14px; max-height: 520px; width: auto; object-fit: contain; }
.plano-card figcaption { color: var(--ink-soft); font-size: 0.9rem; }

.model-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}
.model-intro ul { list-style: none; padding: 0; margin: 10px 0 0; display: flex; gap: 22px; flex-wrap: wrap; }
.model-intro ul li { color: var(--ink-soft); font-weight: 600; font-size: 0.92rem; }
.model-intro ul li b { display: block; color: var(--ink); font-family: var(--font-serif); font-style: italic; font-weight: 500; font-size: 1.1rem; }

/* Process steps */
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-top: 1px solid rgba(43, 38, 32, 0.12);
}
.steps li:last-child { border-bottom: 1px solid rgba(43, 38, 32, 0.12); }
.steps li::before {
  content: counter(step);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.8rem;
  color: var(--terracota-dark);
}
.steps h3 { margin-bottom: 6px; }
.steps p { margin: 0; }

/* Quote / storytelling block */
.quote-block {
  border-left: 3px solid var(--terracota);
  padding-left: 26px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.4rem;
  color: var(--ink);
  max-width: 720px;
}

/* Two column */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split img { border-radius: var(--radius); box-shadow: var(--shadow); }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; gap: 32px; }
}

/* FAQ */
.faq-item {
  background: var(--white);
  border-radius: 10px;
  padding: 6px 24px;
  margin-bottom: 14px;
  box-shadow: 0 8px 24px -18px rgba(28,27,25,0.4);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 0;
  font-weight: 700;
  font-family: var(--font-head);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--terracota-dark);
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { padding-bottom: 20px; margin: 0; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
}
.contact-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.contact-card .person { display: flex; align-items: center; gap: 16px; margin-bottom: 14px; }
.contact-card .person img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--cream-soft);
}
.contact-card h3 { margin-bottom: 4px; }
.contact-card .role { color: var(--terracota-dark); font-weight: 600; font-size: 0.9rem; display: block; }
.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li { padding: 14px 0; border-top: 1px solid rgba(43,38,32,0.12); }
.info-list li:first-child { border-top: none; }
.info-list .label { display: block; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin-bottom: 3px; }

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* Floating WhatsApp button */
.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  background: var(--olive);
  color: var(--white);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 16px 30px -12px rgba(28,27,25,0.55);
  text-decoration: none;
}
.wa-float svg { width: 28px; height: 28px; }

/* Footer */
.site-footer {
  background: var(--steel-900);
  color: var(--silver);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(201,194,180,0.15);
}
.footer-brand { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.footer-brand img { width: 52px; height: 52px; border-radius: 50%; }
.footer-brand .brand-name { color: var(--white); }
.site-footer h4 {
  color: var(--white);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { text-decoration: none; color: var(--silver); font-size: 0.92rem; }
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  font-size: 0.82rem;
  color: rgba(201,194,180,0.7);
}

@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}