/* ============================================================
   GRUPO MACCAFERRI — STYLESHEET
   Mobile-first design
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@700;800;900&display=swap');

/* ── CSS Custom Properties ───────────────────────────────── */
:root {
  /* Colors */
  --gold:       #C9A84C;
  --gold-dark:  #A8853A;
  --gold-light: #E2C87A;
  --dark:       #0F0F0F;
  --dark-2:     #1A1A1A;
  --dark-3:     #242424;
  --cream:      #F5F0E8;
  --cream-2:    #EDE8DC;
  --white:      #FFFFFF;
  --gray-light: #D6D0C4;
  --gray-mid:   #8A8278;
  --gray-text:  #4A4540;

  /* Typography */
  --font-sans:  'Inter', sans-serif;
  --font-serif: 'Playfair Display', serif;

  /* Spacing */
  --section-pad-mobile: 4rem 1.25rem;
  --section-pad-desk:   6rem 2rem;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition: 0.35s var(--ease);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--cream);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ── Utilities ────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section-label {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 1rem;
}

.gold-divider {
  width: 40px;
  height: 2px;
  background: var(--gold);
  margin: 0.75rem 0 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

.btn-gold {
  background: var(--gold);
  color: var(--dark);
}
.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 168, 76, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* ── NAVIGATION ───────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 1.25rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.15);
  transition: background var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: rgba(10, 10, 10, 0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
}

.nav-logo-text {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--white);
  text-transform: uppercase;
}

.nav-logo-text span {
  color: var(--gold);
}

/* Desktop nav links */
.nav-links {
  display: none;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--gold);
}

.nav-links a:hover::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  width: 100%;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.2);
  padding: 2rem 1.25rem;
  z-index: 999;
  transform: translateY(-110%);
  opacity: 0;
  transition: transform 0.4s var(--ease), opacity 0.4s var(--ease);
  pointer-events: none;
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu ul li a {
  display: block;
  padding: 1.1rem 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color var(--transition), padding-left var(--transition);
}

.mobile-menu ul li a:hover {
  color: var(--gold);
  padding-left: 0.5rem;
}

/* ── HERO ─────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('images/hero_building.png');
  background-size: cover;
  background-position: center top;
  transform: scale(1.05);
  transition: transform 8s ease-out;
}

.hero-bg.loaded {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(5, 5, 5, 0.92) 0%,
    rgba(5, 5, 5, 0.6) 50%,
    rgba(5, 5, 5, 0.2) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 1.25rem 3.5rem;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

.hero-title {
  font-family: var(--font-sans);
  font-size: clamp(3rem, 14vw, 7rem);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--white);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-title .accent {
  color: var(--gold);
}

.hero-subtitle {
  font-size: 0.875rem;
  font-weight: 400;
  color: rgba(255,255,255,0.72);
  max-width: 420px;
  line-height: 1.7;
  margin-bottom: 2.25rem;
}

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

/* Scroll indicator */
.scroll-hint {
  position: absolute;
  bottom: 1.5rem;
  right: 1.25rem;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.5;
}

.scroll-hint span {
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  writing-mode: vertical-rl;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}

@keyframes scrollAnim {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.4; }
}

/* ── ABOUT SECTION ────────────────────────────────────────── */
#sobre {
  padding: var(--section-pad-mobile);
  background: var(--cream);
}

.sobre-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.sobre-heading {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 9vw, 3.5rem);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--dark);
}

.sobre-text {
  font-size: 0.9rem;
  color: var(--gray-text);
  line-height: 1.8;
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 3rem;
  border-top: 1px solid var(--gray-light);
}

.stat-item {
  padding: 2rem 1rem;
  text-align: center;
  border-right: 1px solid var(--gray-light);
  transition: background var(--transition);
}

.stat-item:last-child {
  border-right: none;
}

.stat-item.highlight {
  background: var(--dark);
}

.stat-number {
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 7vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--dark);
  margin-bottom: 0.25rem;
}

.stat-item.highlight .stat-number {
  color: var(--gold);
}

.stat-label {
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-mid);
}

.stat-item.highlight .stat-label {
  color: rgba(255,255,255,0.5);
}

/* ── PORTFOLIO / BANDEIRAS ────────────────────────────────── */
#bandeiras {
  padding: var(--section-pad-mobile);
  background: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-header .section-label {
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 7vw, 2.5rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--dark);
}

.gold-divider-center {
  width: 40px;
  height: 2px;
  background: var(--gold);
  margin: 1rem auto 0;
}

/* Cards grid */
.bandeiras-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.bandeira-card {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  cursor: pointer;
  aspect-ratio: 4/3;
}

.bandeira-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.bandeira-card:hover img {
  transform: scale(1.06);
}

.bandeira-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(5,5,5,0.92) 0%,
    rgba(5,5,5,0.4) 55%,
    rgba(5,5,5,0.1) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
}

.bandeira-tag {
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.35rem;
}

.bandeira-name {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.bandeira-stats {
  display: flex;
  gap: 1.5rem;
}

.bandeira-stat {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.bandeira-stat-num {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.bandeira-stat-label {
  font-size: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

.bandeira-card-border {
  position: absolute;
  inset: 0;
  border: 1.5px solid transparent;
  transition: border-color 0.4s var(--ease);
  pointer-events: none;
}

.bandeira-card:hover .bandeira-card-border {
  border-color: var(--gold);
}

/* ── CONTACT SECTION ──────────────────────────────────────── */
#contato {
  padding: var(--section-pad-mobile);
  background: var(--cream);
}

.contato-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.contato-info .section-label {
  margin-bottom: 0.75rem;
}

.contato-title {
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 8vw, 3rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--dark);
  margin-bottom: 1rem;
}

.contato-desc {
  font-size: 0.875rem;
  color: var(--gray-text);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.contato-address {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.address-label {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.address-text {
  font-size: 0.8rem;
  color: var(--gray-text);
  line-height: 1.6;
}

/* Form */
.contato-form {
  background: var(--white);
  padding: 2rem 1.5rem;
  border: 1px solid var(--gray-light);
}

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

.form-label {
  display: block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-mid);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--dark);
  background: var(--cream);
  border: 1px solid var(--gray-light);
  border-radius: 0;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}

.form-control:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.12);
}

.form-control::placeholder {
  color: var(--gray-light);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  cursor: pointer;
  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='%23C9A84C' 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;
}

.btn-form {
  width: 100%;
  padding: 1rem;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
}

/* ── FOOTER ───────────────────────────────────────────────── */
#footer {
  background: var(--dark);
  padding: 2.5rem 1.25rem;
  border-top: 1px solid rgba(201, 168, 76, 0.2);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-brand-name {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.25rem;
}

.footer-brand-name span {
  color: var(--gold);
}

.footer-tagline {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.6;
  max-width: 240px;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.07);
}

.footer-copy {
  font-size: 0.6rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--gold);
}

/* ── ANIMATIONS ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── RESPONSIVE — TABLET (≥ 640px) ───────────────────────── */
@media (min-width: 640px) {
  .bandeiras-grid {
    grid-template-columns: 1fr 1fr;
  }

  .bandeiras-grid .bandeira-card:last-child {
    grid-column: 1 / -1;
  }

  .contato-grid {
    gap: 3.5rem;
  }
}

/* ── RESPONSIVE — DESKTOP (≥ 1024px) ─────────────────────── */
@media (min-width: 1024px) {

  /* Navbar */
  #navbar {
    padding: 0 3rem;
    height: 72px;
  }

  .nav-links {
    display: flex;
  }

  .hamburger {
    display: none;
  }

  .mobile-menu {
    display: none;
  }

  /* Hero */
  .hero-content {
    padding: 0 3rem 5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
    max-width: 520px;
  }

  /* About */
  #sobre {
    padding: var(--section-pad-desk);
  }

  .sobre-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: 5rem;
  }

  /* Stats */
  .stat-label {
    font-size: 0.6rem;
  }

  /* Portfolio */
  #bandeiras {
    padding: var(--section-pad-desk);
  }

  .bandeiras-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .bandeiras-grid .bandeira-card:last-child {
    grid-column: auto;
  }

  /* Contact */
  #contato {
    padding: var(--section-pad-desk);
  }

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

  /* Form */
  .contato-form {
    padding: 2.5rem;
  }

  /* Footer */
  #footer {
    padding: 3rem;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ── RESPONSIVE — LARGE (≥ 1280px) ───────────────────────── */
@media (min-width: 1280px) {

  .container {
    padding: 0 2rem;
  }

  #navbar {
    padding: 0 4rem;
  }

  .hero-content {
    padding: 0 4rem 6rem;
  }

  #sobre { padding: 7rem 4rem; }
  #bandeiras { padding: 7rem 4rem; }
  #contato { padding: 7rem 4rem; }
  #footer { padding: 3.5rem 4rem; }
}