/* ============================================================
   BASE
   ============================================================ */

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

body.nav-open,
body.lightbox-open {
  overflow: hidden;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-24);
}

.section--dark {
  background: var(--color-charcoal);
  color: var(--color-white);
  position: relative;
}

.section--dark::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange) 0%, rgba(232,80,10,0.3) 50%, transparent 100%);
  pointer-events: none;
}

.section--mid {
  background: var(--color-charcoal-mid);
  color: var(--color-white);
  position: relative;
}

.section--mid::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange) 0%, rgba(232,80,10,0.3) 50%, transparent 100%);
  pointer-events: none;
}

.section--light {
  background: var(--color-off-white);
  color: var(--color-text);
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-header.text-center {
  text-align: center;
}

.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.section-title .accent {
  color: var(--color-orange);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-top: var(--space-4);
  line-height: 1.6;
}

.section--dark .section-subtitle,
.section--mid .section-subtitle {
  color: rgba(255,255,255,0.6);
}

/* ============================================================
   REVEAL ANIMATIONS
   ============================================================ */

[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--dur-slower) var(--ease-out),
              transform var(--dur-slower) var(--ease-out);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal][data-delay="100"] { transition-delay: 100ms; }
[data-reveal][data-delay="200"] { transition-delay: 200ms; }
[data-reveal][data-delay="300"] { transition-delay: 300ms; }
[data-reveal][data-delay="400"] { transition-delay: 400ms; }
[data-reveal][data-delay="500"] { transition-delay: 500ms; }

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.8rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all var(--dur-base) var(--ease-out);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-orange);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--color-orange-light);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
}

.btn--ghost {
  border: 2px solid rgba(255,255,255,0.55);
  color: var(--color-white);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
  transform: translateY(-2px);
}

.btn--outline {
  border: 2px solid var(--color-orange);
  color: var(--color-orange);
  background: transparent;
}

.btn--outline:hover {
  background: var(--color-orange);
  color: var(--color-white);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
}

.btn--whatsapp {
  background: #25D366;
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(37,211,102,0.35);
}

.btn--whatsapp:hover {
  background: #1DA851;
  transform: translateY(-2px);
}

/* ============================================================
   HEADER
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  padding-block: 4px;
  background: #ffffff;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  transition: box-shadow var(--dur-slow) var(--ease-out);
}

.site-header.scrolled {
  background: #ffffff;
  box-shadow: 0 2px 20px rgba(0,0,0,0.12);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-logo {
  height: 144px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-list a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-charcoal);
  transition: color var(--dur-fast);
  position: relative;
  padding-bottom: 3px;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-orange);
  transition: width var(--dur-base) var(--ease-out);
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--color-orange);
}

.nav-list a:hover::after,
.nav-list a.active::after {
  width: 100%;
}

.nav-cta {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white) !important;
  background: var(--color-orange);
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: all var(--dur-base) var(--ease-out);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-cta:hover {
  background: var(--color-orange-light);
  box-shadow: var(--shadow-orange);
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  z-index: calc(var(--z-nav) + 10);
}

.hamburger .bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--dur-base) var(--ease-out);
  transform-origin: center;
}

body.nav-open .hamburger .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.nav-open .hamburger .bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

body.nav-open .hamburger .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: calc(var(--z-nav) - 1);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}

body.nav-open .nav-backdrop {
  opacity: 1;
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--color-charcoal);
  color: var(--color-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../assets/images/projects/hero.JPG');
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
  opacity: 1;
  transform: scale(1.03);
  animation: hero-zoom 20s ease-in-out infinite alternate;
}

@keyframes hero-zoom {
  from { transform: scale(1.03); }
  to   { transform: scale(1.08); }
}

/* Grain texture for depth */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  opacity: 0.35;
  pointer-events: none;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232,80,10,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,80,10,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 1;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(26,31,46,0.97) 0%,
    rgba(26,31,46,0.88) 45%,
    rgba(26,31,46,0.55) 75%,
    rgba(26,31,46,0.40) 100%
  );
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 3;
  padding-top: calc(var(--header-h) + var(--space-16));
  padding-bottom: calc(var(--space-20) + 120px);
}

.hero-content {
  max-width: 760px;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-orange);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--color-orange);
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 0.95;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-6);
}

.hero-title .line {
  display: block;
}

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

.hero-subtitle {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: rgba(255,255,255,0.72);
  max-width: 540px;
  line-height: 1.65;
  margin-bottom: var(--space-10);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.hero-stats {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  background: rgba(26,31,46,0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(232,80,10,0.25);
}

.hero-stats .container {
  padding-top: 0;
  padding-bottom: 0;
  display: flex;
  justify-content: space-around;
  align-items: stretch;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) var(--space-4);
  flex: 1;
  position: relative;
}

.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--color-border);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  color: var(--color-orange);
  line-height: 1;
  letter-spacing: 0.02em;
}

.stat-suffix {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-orange);
}

.stat-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-top: var(--space-1);
  text-align: center;
}

/* ============================================================
   SOBRE
   ============================================================ */

.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.sobre-visual {
  position: relative;
}

.sobre-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border-left: 4px solid var(--color-orange);
  box-shadow: var(--shadow-xl);
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, #e8e8e8, #d0d0d0);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sobre-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sobre-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  color: #aaa;
}

.sobre-placeholder i {
  font-size: 3rem;
}

.sobre-badge {
  position: absolute;
  bottom: var(--space-6);
  left: calc(-1 * var(--space-6));
  background: var(--color-orange);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-orange);
}

.sobre-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.sobre-text p {
  color: #4a5568;
  line-height: 1.75;
  font-size: var(--text-base);
}

.sobre-text p + p {
  margin-top: var(--space-4);
}

.sobre-values {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-2);
}

.value-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.value-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(232,80,10,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-orange);
  font-size: 1.4rem;
  transition: background var(--dur-base);
}

.value-item:hover .value-icon {
  background: var(--color-orange);
  color: var(--color-white);
}

.value-text strong {
  display: block;
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: 2px;
}

.value-text span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ============================================================
   SERVIÇOS
   ============================================================ */

.servicos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.servico-card {
  background: var(--color-charcoal-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  border: 1px solid var(--color-border);
  border-left: 3px solid transparent;
  transition: all var(--dur-slow) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.servico-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(232,80,10,0.05), transparent 60%);
  opacity: 0;
  transition: opacity var(--dur-slow);
}

.servico-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.04), transparent);
  transition: left 0.6s var(--ease-out);
  pointer-events: none;
}

.servico-card:hover {
  border-left-color: var(--color-orange);
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.5), 0 0 0 1px rgba(232,80,10,0.15);
  background: var(--color-charcoal-light);
}

.servico-card:hover::before {
  opacity: 1;
}

.servico-card:hover::after {
  left: 140%;
}

.card-number {
  font-family: var(--font-heading);
  font-size: 5rem;
  font-weight: 800;
  color: rgba(255,255,255,0.04);
  line-height: 1;
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
  letter-spacing: -0.04em;
  user-select: none;
  transition: color var(--dur-slow);
}

.servico-card:hover .card-number {
  color: rgba(232,80,10,0.08);
}

.card-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(232,80,10,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-orange);
  font-size: 1.6rem;
  transition: all var(--dur-base) var(--ease-out);
  position: relative;
  z-index: 1;
}

.servico-card:hover .card-icon-wrap {
  background: var(--color-orange);
  color: var(--color-white);
  box-shadow: var(--shadow-orange);
}

.card-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-white);
  margin-bottom: var(--space-3);
  position: relative;
  z-index: 1;
}

.card-desc {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: var(--space-5);
  position: relative;
  z-index: 1;
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
}

.card-list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.72);
}

.card-list li::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-orange);
  flex-shrink: 0;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-orange);
  transition: gap var(--dur-base) var(--ease-out);
  position: relative;
  z-index: 1;
}

.card-link:hover {
  gap: var(--space-4);
}

/* ============================================================
   PROJETOS
   ============================================================ */

.projetos-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-bottom: var(--space-10);
}

.filter-btn {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.12);
  transition: all var(--dur-base) var(--ease-out);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-orange);
  color: var(--color-white);
  border-color: var(--color-orange);
  box-shadow: var(--shadow-orange);
}

.projetos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.projeto-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-charcoal-light);
  border: 1px solid var(--color-border);
  transition: all var(--dur-slow) var(--ease-out);
}

.projeto-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.projeto-card.card-hidden {
  display: none;
}

.projeto-media {
  position: relative;
  overflow: hidden;
}

.projeto-media img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  transition: transform var(--dur-slower) var(--ease-out);
}

.projeto-card:hover .projeto-media img {
  transform: scale(1.05);
}

.projeto-placeholder {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-charcoal-light), #2a3347);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: rgba(255,255,255,0.2);
  border: 2px dashed rgba(255,255,255,0.1);
  border-radius: 0;
}

.projeto-placeholder i {
  font-size: 2.5rem;
}

.projeto-placeholder span {
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
}

.projeto-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-5);
  background: linear-gradient(to top, rgba(26,31,46,0.97) 0%, rgba(26,31,46,0.5) 70%, transparent 100%);
  transform: translateY(40%);
  transition: transform var(--dur-slow) var(--ease-out), opacity var(--dur-base) var(--ease-out);
  opacity: 0;
}

.projeto-card:hover .projeto-overlay {
  transform: translateY(0);
  opacity: 1;
}

.projeto-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-1);
}

.projeto-meta {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
}

.projeto-desc {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  line-height: 1.5;
  margin-top: var(--space-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.projeto-ano {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: var(--color-orange);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   CONTATO
   ============================================================ */

.contato-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-16);
  align-items: start;
}

.contato-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.contato-intro {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.65);
  line-height: 1.65;
  max-width: 420px;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(232,80,10,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-orange);
  font-size: 1.2rem;
  margin-top: 2px;
}

.info-detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.info-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

.info-value {
  font-size: var(--text-base);
  color: var(--color-white);
  font-weight: 500;
  transition: color var(--dur-fast);
}

.info-value:hover {
  color: var(--color-orange);
}

.social-row {
  display: flex;
  gap: var(--space-3);
  padding-top: var(--space-2);
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 1.2rem;
  transition: all var(--dur-base) var(--ease-out);
}

.social-link:hover {
  background: var(--color-orange);
  color: var(--color-white);
  border-color: var(--color-orange);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
}

/* Form */
.contact-form {
  background: var(--color-charcoal-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--color-white);
  font-size: var(--text-base);
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.25);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-orange);
  background: rgba(232,80,10,0.04);
}

.form-group select option {
  background: var(--color-charcoal-mid);
  color: var(--color-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form-note {
  text-align: center;
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
}

.form-actions .btn {
  width: 100%;
  justify-content: center;
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background: #111520;
  color: var(--color-white);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-logo {
  height: 96px;
  width: auto;
  margin-bottom: var(--space-4);
  filter: brightness(0) invert(1);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
  max-width: 280px;
}

.footer-title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: var(--space-5);
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links-list a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  transition: color var(--dur-fast);
}

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

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
}

.footer-contact-item i {
  color: var(--color-orange);
  font-size: 1rem;
  flex-shrink: 0;
}

.footer-contact-item a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.05em;
}

.footer-location {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ============================================================
   WHATSAPP FAB
   ============================================================ */

.whatsapp-fab {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  z-index: var(--z-float);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.5);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base);
  opacity: 0;
  transform: scale(0) translateY(20px);
}

.whatsapp-fab.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
  animation: fab-bounce 0.6s var(--ease-out);
}

.whatsapp-fab:hover {
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 8px 28px rgba(37,211,102,0.6);
}

.whatsapp-fab .fab-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(37,211,102,0.4);
  animation: pulse-ring 2.5s ease-out infinite;
}

@keyframes fab-bounce {
  0%   { transform: scale(0) translateY(20px); }
  60%  { transform: scale(1.12) translateY(-4px); }
  100% { transform: scale(1) translateY(0); }
}

@keyframes pulse-ring {
  0%   { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* ============================================================
   LIGHTBOX
   ============================================================ */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  transition: opacity var(--dur-base);
}

.lightbox.open {
  opacity: 1;
}

.lightbox-inner {
  position: relative;
  max-width: 960px;
  width: 100%;
  animation: lightbox-in var(--dur-slow) var(--ease-out);
}

.lightbox-inner img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.lightbox-close {
  position: absolute;
  top: calc(-1 * var(--space-10));
  right: 0;
  color: rgba(255,255,255,0.7);
  font-size: 1.5rem;
  background: rgba(255,255,255,0.1);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--dur-fast);
}

.lightbox-close:hover {
  background: var(--color-orange);
  color: white;
}

@keyframes lightbox-in {
  from { transform: scale(0.92); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .servicos-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding-block: var(--space-16);
  }

  /* Nav mobile */
  .site-header .container {
    justify-content: center;
    position: relative;
  }

  .site-header {
    padding-block: 0;
  }

  .site-logo {
    height: 80px;
  }

  .hamburger {
    display: flex;
    position: absolute;
    right: var(--container-pad);
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100dvh;
    background: var(--color-charcoal);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: var(--space-16) var(--space-8);
    gap: var(--space-8);
    z-index: var(--z-nav);
    transition: right var(--dur-slow) var(--ease-out);
    box-shadow: -8px 0 32px rgba(0,0,0,0.5);
    border-left: 1px solid var(--color-border);
  }

  body.nav-open .main-nav {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    width: 100%;
  }

  .nav-list a {
    font-size: var(--text-xl);
    color: rgba(255,255,255,0.85);
  }

  .nav-cta {
    width: 100%;
    justify-content: center;
  }

  /* Hero */
  .hero-stats .container {
    flex-direction: row;
  }

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

  /* Sobre */
  .sobre-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .sobre-visual {
    order: -1;
  }

  .sobre-badge {
    left: var(--space-4);
  }

  /* Serviços */
  .servicos-grid {
    grid-template-columns: 1fr;
  }

  /* Contato */
  .contato-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

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

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  /* FAB */
  .whatsapp-fab {
    bottom: var(--space-6);
    right: var(--space-6);
    width: 54px;
    height: 54px;
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta-group .btn {
    justify-content: center;
  }

  .projetos-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: var(--space-6);
  }
}

/* ============================================================
   CALCULADORAS TÉCNICAS
   ============================================================ */

/* ── Mode Switch ───────────────────────────────────────────── */
.calc-mode-switch {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  background: rgba(26, 31, 46, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
}

.calc-mode-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--dur-base) var(--ease-out);
}

.calc-mode-btn.active {
  background: var(--color-charcoal);
  color: var(--color-white);
  box-shadow: 0 2px 10px rgba(26, 31, 46, 0.25);
}

.calc-mode-btn:not(.active):hover {
  background: rgba(26, 31, 46, 0.08);
  color: var(--color-charcoal);
}

/* ── Tabs ──────────────────────────────────────────────────── */
.calc-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.calc-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-white);
  border: 1.5px solid rgba(26, 31, 46, 0.15);
  border-radius: var(--radius-md);
  color: var(--color-charcoal);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--dur-base) var(--ease-out);
  text-align: center;
}

.calc-tab i {
  font-size: 1.15rem;
  flex-shrink: 0;
  color: var(--color-charcoal-light);
  transition: color var(--dur-base);
}

.calc-tab:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.calc-tab:hover i,
.calc-tab.active i {
  color: var(--color-orange);
}

.calc-tab.active {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(232, 80, 10, 0.35);
}

.calc-tab.active i {
  color: var(--color-white);
}

/* ── Panels ────────────────────────────────────────────────── */
.calc-panels {
  background: var(--color-white);
  border: 1.5px solid rgba(26, 31, 46, 0.10);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: 0 2px 20px rgba(26, 31, 46, 0.06);
}

.calc-panel {
  display: none;
}

.calc-panel.active {
  display: block;
}

.calc-panel-intro {
  background: rgba(232, 80, 10, 0.06);
  border-left: 3px solid var(--color-orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
}

.calc-panel-intro p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
}

.calc-panel-intro strong {
  color: var(--color-orange);
  font-weight: 600;
}

/* ── Form grid ─────────────────────────────────────────────── */
.calc-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.calc-field--full {
  grid-column: 1 / -1;
}

.calc-field label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-charcoal-mid);
}

.calc-field input[type="number"],
.calc-field select {
  padding: var(--space-3) var(--space-4);
  background: var(--color-off-white);
  border: 1.5px solid rgba(26, 31, 46, 0.15);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-charcoal);
  outline: none;
  transition: border-color var(--dur-fast);
  width: 100%;
}

.calc-field input[type="number"]:focus,
.calc-field select:focus {
  border-color: var(--color-orange);
  background: var(--color-white);
}

/* ── Calculate button ──────────────────────────────────────── */
.calc-btn {
  margin-bottom: var(--space-2);
}

/* ── Result box ────────────────────────────────────────────── */
.calc-result {
  margin-top: var(--space-8);
  background: var(--color-charcoal);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border-left: 4px solid var(--color-orange);
}

.calc-result-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: var(--space-2);
}

.calc-result-value {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: var(--space-5);
}

.calc-result-note {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.45);
  margin-top: var(--space-4);
  line-height: 1.6;
}

.calc-result-cta {
  margin-top: var(--space-5);
  display: inline-flex;
}

/* ── Breakdown ─────────────────────────────────────────────── */
.calc-breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.calc-breakdown-item {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.bd-label {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.50);
  line-height: 1.4;
}

.bd-value {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-white);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .calc-tabs {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
  }

  .calc-tab span {
    font-size: var(--text-xs);
  }
}

@media (max-width: 768px) {
  .calc-mode-switch {
    flex-direction: column;
  }

  .calc-tabs {
    grid-template-columns: repeat(2, 1fr);
  }

  .calc-panels {
    padding: var(--space-6);
  }

  .calc-form-grid {
    grid-template-columns: 1fr 1fr;
  }

  .calc-breakdown {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .calc-tabs {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
  }

  .calc-tab {
    padding: var(--space-2) var(--space-3);
    flex-direction: column;
    gap: var(--space-1);
  }

  .calc-form-grid {
    grid-template-columns: 1fr;
  }

  .calc-breakdown {
    grid-template-columns: 1fr;
  }

  .calc-result {
    padding: var(--space-6);
  }
}