/* ═══════════════════════════════════════════════════════════
   MFL Construções – Stylesheet
   Palette: Gold #B89356 | Dark #111111 | Off-white #F5F1EB
   ═══════════════════════════════════════════════════════════ */

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --gold:        #B89356;
  --gold-light:  #D4B07A;
  --gold-dark:   #9A7B42;
  --dark:        #111111;
  --dark-2:      #1C1C1C;
  --dark-3:      #2A2A2A;
  --mid:         #6B6B6B;
  --light:       #F5F1EB;
  --white:       #FFFFFF;
  --border:      rgba(184, 147, 86, 0.2);
  --radius:      4px;
  --transition:  0.3s ease;
  --shadow:      0 20px 60px rgba(0,0,0,0.12);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
address { font-style: normal; }

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  line-height: 1.2;
  font-weight: 600;
}

h1 { font-size: clamp(2.6rem, 6vw, 4.2rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.35rem; }
h4 { font-size: 1rem; font-family: 'Inter', sans-serif; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }

p { color: var(--mid); line-height: 1.75; }

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

/* ── Layout ── */
.container { max-width: 1160px; margin: 0 auto; padding: 0 2rem; }

section { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 4rem; }
.section-header h2 { margin-bottom: 1rem; }
.section-sub { max-width: 540px; margin: 0 auto; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-gold {
  background: var(--gold);
  color: var(--white);
  border-color: var(--gold);
}
.btn-gold:hover { background: var(--gold-dark); border-color: var(--gold-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(184,147,86,0.35); }

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: var(--white); }

.btn-outline-dark {
  background: transparent;
  color: var(--dark);
  border-color: var(--dark);
}
.btn-outline-dark:hover { background: var(--dark); color: var(--white); }

.btn-sm { padding: 0.65rem 1.4rem; font-size: 0.85rem; }
.btn-lg { padding: 1.1rem 2.8rem; font-size: 1rem; }
.btn-full { width: 100%; }

/* ── Animations ── */
[data-animate] { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
[data-animate].visible { opacity: 1; transform: none; }

/* ════════════════════════════════════════
   HEADER
════════════════════════════════════════ */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}

#header.scrolled {
  background: rgba(17, 17, 17, 0.97);
  backdrop-filter: blur(12px);
  padding: 0.85rem 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo { height: 56px; width: auto; border-radius: 3px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-item {
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.85);
  transition: color var(--transition);
}
.nav-item:hover { color: var(--gold-light); }

.nav-cta {
  background: var(--gold);
  color: var(--white) !important;
  padding: 0.55rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 500;
}
.nav-cta:hover { background: var(--gold-dark); color: var(--white); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
  border-radius: 2px;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ════════════════════════════════════════
   HERO
════════════════════════════════════════ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, #0e0c08 0%, #1a160e 40%, #0d0b07 100%);
  z-index: 0;
}

/* Subtle texture overlay */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(184,147,86,0.015) 2px, rgba(184,147,86,0.015) 3px),
    repeating-linear-gradient(90deg, transparent, transparent 60px, rgba(184,147,86,0.01) 60px, rgba(184,147,86,0.01) 61px);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(184,147,86,0.08) 0%, transparent 65%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1160px;
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
  width: 100%;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
  padding-left: 2.5rem;
  position: relative;
}
.hero-eyebrow::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.8rem;
  height: 1px;
  background: var(--gold);
}

.hero-title {
  color: var(--white);
  margin-bottom: 1.5rem;
  max-width: 700px;
}

.hero-subtitle {
  color: rgba(255,255,255,0.6);
  font-size: 1.1rem;
  max-width: 520px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Stats bar */
.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
  width: 100%;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-num {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 600;
  color: var(--gold);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(184,147,86,0.25);
  margin: 0 2.5rem;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  right: 3rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--gold));
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ════════════════════════════════════════
   SOBRE
════════════════════════════════════════ */
#sobre { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  padding-bottom: 2rem;
}

.about-img-placeholder {
  aspect-ratio: 4/5;
  background: linear-gradient(145deg, var(--dark-2), var(--dark-3));
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.about-img-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 40px,
    rgba(184,147,86,0.04) 40px,
    rgba(184,147,86,0.04) 41px
  );
}

.about-img-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: rgba(184,147,86,0.4);
}

.about-img-icon { font-size: 4rem; opacity: 0.5; }

.about-badge {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--gold);
  color: var(--white);
  padding: 1.2rem 1.5rem;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  box-shadow: 0 12px 40px rgba(184,147,86,0.4);
}

.about-badge strong { font-size: 1.5rem; font-family: 'Playfair Display', serif; }
.about-badge span { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.85; }

.about-text h2 { margin-bottom: 1.5rem; }
.about-text .lead { font-size: 1.05rem; color: var(--dark); margin-bottom: 1rem; }
.about-text p { margin-bottom: 1.5rem; }

.values-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 2rem; }

.value-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--dark);
  letter-spacing: 0.04em;
}

.value-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

/* ════════════════════════════════════════
   EMPREENDIMENTOS
════════════════════════════════════════ */
#empreendimentos { background: var(--light); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--white);
  border-radius: 2px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.project-thumb {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.thumb-1 { background: linear-gradient(135deg, #1e1e1e 0%, #3a3a3a 100%); }
.thumb-2 { background: linear-gradient(135deg, #1a1610 0%, #3a3020 100%); }
.thumb-current { background: linear-gradient(135deg, #100d06 0%, #2e2210 50%, #1a1208 100%); }
.thumb-upcoming { background: linear-gradient(135deg, #0a0e10 0%, #141e20 100%); }

/* Decorative lines on thumbnails */
.project-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 30px,
    rgba(255,255,255,0.03) 30px,
    rgba(255,255,255,0.03) 31px
  );
}

.project-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.tag-delivered { background: rgba(255,255,255,0.15); color: rgba(255,255,255,0.85); border: 1px solid rgba(255,255,255,0.2); }
.tag-construction { background: var(--gold); color: var(--white); }
.tag-soon { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7); border: 1px solid rgba(255,255,255,0.15); }

.project-featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(184,147,86,0.2);
  border: 1px solid var(--gold);
  color: var(--gold-light);
  padding: 0.25rem 0.7rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 100px;
}

.project-body { padding: 1.75rem; }
.project-meta { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.5rem; }

.project-body h3 { margin-bottom: 0.75rem; color: var(--dark); }

.project-desc { font-size: 0.9rem; margin-bottom: 1rem; }

.project-specs {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1.25rem;
}

.project-specs li {
  font-size: 0.85rem;
  color: var(--mid);
  padding-left: 1rem;
  position: relative;
}

.project-specs li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: 0.7rem;
  top: 2px;
}

/* Featured card spans full width */
.project-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 2fr 3fr;
}

.project-featured .project-thumb { height: auto; min-height: 260px; }

/* ════════════════════════════════════════
   DIFERENCIAIS
════════════════════════════════════════ */
#diferenciais { background: var(--dark); }

#diferenciais .eyebrow { color: var(--gold); }
#diferenciais .section-header h2 { color: var(--white); }
#diferenciais .section-sub { color: rgba(255,255,255,0.45); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
}

.feature-card {
  background: var(--dark);
  padding: 2.5rem 2rem;
  transition: background var(--transition);
}

.feature-card:hover { background: var(--dark-2); }

.feature-icon-wrap {
  width: 52px;
  height: 52px;
  border: 1px solid var(--border);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--gold);
  transition: border-color var(--transition), background var(--transition);
}

.feature-card:hover .feature-icon-wrap {
  background: rgba(184,147,86,0.1);
  border-color: var(--gold);
}

.feature-card h3 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.feature-card p { color: rgba(255,255,255,0.45); font-size: 0.9rem; }

/* ════════════════════════════════════════
   CTA BAND
════════════════════════════════════════ */
#cta-band {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, #0e0c08 0%, #1e1a10 100%);
  overflow: hidden;
}

.cta-band-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(184,147,86,0.12) 0%, transparent 70%);
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-content h2 { color: var(--white); margin-bottom: 1rem; }
.cta-content p { color: rgba(255,255,255,0.55); margin-bottom: 2rem; font-size: 1.05rem; }

/* ════════════════════════════════════════
   CONTATO
════════════════════════════════════════ */
#contato { background: var(--white); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 6rem;
  align-items: start;
}

.contact-info h2 { margin: 0.5rem 0 1.25rem; }
.contact-info > p { margin-bottom: 2rem; }

.contact-items { display: flex; flex-direction: column; gap: 1.25rem; }

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--gold);
  margin-top: 2px;
}

.contact-item strong {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dark);
  margin-bottom: 0.2rem;
}

.contact-item span { font-size: 0.92rem; color: var(--mid); }

/* Form */
.contact-form-wrap {
  background: var(--light);
  padding: 2.5rem;
  border-radius: 2px;
}

.form-group { margin-bottom: 1.25rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.required { color: var(--gold); }

input, select, textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--white);
  border: 1px solid #E0DDD6;
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  color: var(--dark);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

input::placeholder, textarea::placeholder { color: #B0ABA0; }

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(184,147,86,0.15);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23B89356' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

textarea { resize: vertical; min-height: 110px; }

.form-feedback {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  text-align: center;
}

.form-success { background: rgba(34,139,34,0.1); color: #228B22; border: 1px solid rgba(34,139,34,0.2); }
.form-error   { background: rgba(200,50,50,0.08); color: #C03232; border: 1px solid rgba(200,50,50,0.15); }

.hidden { display: none !important; }

/* ════════════════════════════════════════
   FOOTER
════════════════════════════════════════ */
#footer {
  background: var(--dark);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-logo { height: 36px; width: auto; margin-bottom: 1rem; }

.footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.4); line-height: 1.7; max-width: 260px; }

.footer-col h4 {
  font-size: 0.72rem;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1.25rem;
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a { font-size: 0.88rem; color: rgba(255,255,255,0.55); transition: color var(--transition); }
.footer-col a:hover { color: var(--gold-light); }

.footer-col address { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col address p { font-size: 0.88rem; color: rgba(255,255,255,0.45); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
}

.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.25); }
.footer-legal { letter-spacing: 0.06em; }

/* ════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════ */

/* Tablet */
@media (max-width: 1024px) {
  section { padding: 80px 0; }

  .about-grid { gap: 3rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
}

/* Mobile nav */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 80vw;
    max-width: 320px;
    height: 100vh;
    background: var(--dark-2);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2.5rem 2.5rem;
    gap: 0;
    transition: right 0.35s ease;
    border-left: 1px solid rgba(184,147,86,0.15);
  }

  .nav-links.open { right: 0; }

  .nav-item {
    width: 100%;
    padding: 1rem 0;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    color: rgba(255,255,255,0.8);
  }

  .nav-cta {
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    border-bottom: none !important;
  }

  /* Hero */
  .hero-content { padding: 7rem 1.5rem 3rem; }
  .hero-stats { flex-wrap: wrap; gap: 1.5rem; padding: 0 1.5rem 3.5rem; }
  .hero-stat-divider { display: none; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .scroll-hint { display: none; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-visual { order: -1; }
  .about-img-placeholder { aspect-ratio: 3/2; }

  /* Projects */
  .projects-grid { grid-template-columns: 1fr; }
  .project-featured { grid-column: unset; grid-template-columns: 1fr; }
  .project-featured .project-thumb { min-height: 200px; }

  /* Features */
  .features-grid { grid-template-columns: 1fr; gap: 1px; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 480px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.75rem; }
  .container { padding: 0 1.25rem; }
  .contact-form-wrap { padding: 1.5rem; }
  section { padding: 64px 0; }
}