/* ===================================================
   SECONCRETE — CONSTRUTORA DESIGN SYSTEM
   Professional Construction · Red & White Theme
   =================================================== */

:root {
  /* Brand Colors */
  --clr-primary: #e31e24; /* Construction Red */
  --clr-primary-hover: #b8161b;
  --clr-white: #ffffff;
  --clr-light: #f8f9fa;
  --clr-dark: #1a1b1e;
  --clr-gray: #6c757d;
  --clr-border: #dee2e6;

  /* Typography */
  --font-main: 'DM Sans', sans-serif;
  --font-headings: 'Inter', sans-serif;

  /* Spacing */
  --section-pad: 80px;
  --border-radius: 4px;
  --shadow: 0 10px 30px rgba(0,0,0,0.08);

  /* Transitions */
  --t-default: 0.3s ease;
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--clr-dark);
  background-color: var(--clr-white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 700;
  line-height: 1.2;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--t-default);
}

ul {
  list-style: none;
}

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

.text-red {
  color: var(--clr-primary);
}

.bg-light {
  background-color: var(--clr-light);
}

.bg-dark {
  background-color: var(--clr-dark);
}

.section {
  padding: var(--section-pad) 0;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--clr-primary);
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

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

.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 3rem; }

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--clr-white);
  padding: 15px 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.navbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo Box Branding */
.logo-box {
  background-color: var(--clr-primary);
  color: var(--clr-white);
  padding: 8px 16px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: transform var(--t-default);
}

.logo-box:hover {
  transform: scale(1.05);
}

.logo-box__top {
  font-family: var(--font-headings);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1;
  margin-bottom: 2px;
}

.logo-box__divider {
  width: 100%;
  height: 1.5px;
  background-color: var(--clr-white);
  margin: 4px 0;
}

.logo-box__bottom {
  font-family: var(--font-headings);
  font-size: 0.45rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .logo-box__top { font-size: 1.2rem; }
  .logo-box__bottom { font-size: 0.35rem; }
}


.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-dark);
  text-transform: uppercase;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 30px;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--border-radius);
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--t-default);
}

.btn-primary {
  background-color: var(--clr-primary);
  color: var(--clr-white);
}

.btn-primary:hover {
  background-color: var(--clr-primary-hover);
  transform: translateY(-2px);
}

.btn-outline {
  border-color: var(--clr-white);
  color: var(--clr-white);
}

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

/* Hero */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  color: var(--clr-white);
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -1;
}

.hero__content {
  max-width: 800px;
}

.hero__overline {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: 15px;
}

.hero__title {
  font-size: 4rem;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: rgba(255,255,255,0.9);
}

.hero__cta {
  display: flex;
  gap: 15px;
}

/* About */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.img-rounded {
  border-radius: 10px;
}

.shadow-lg {
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 30px;
}

.stat-item {
  border-left: 3px solid var(--clr-primary);
  padding-left: 20px;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--clr-primary);
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-gray);
  text-transform: uppercase;
}

/* Services */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.service-card {
  padding: 40px;
  background: var(--clr-white);
  border-bottom: 4px solid transparent;
  box-shadow: var(--shadow);
  transition: var(--t-default);
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--clr-primary);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  display: block;
}

.service-card h3 {
  margin-bottom: 15px;
}

/* Portfolio */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  height: 250px;
  border-radius: 5px;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--t-default);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(227, 30, 36, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  opacity: 0;
  transition: var(--t-default);
}

.portfolio-item:hover img {
  transform: scale(1.1);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

/* Contact */
.contact {
  color: var(--clr-white) !important;
}

.contact-details li {
  margin-bottom: 15px;
  font-size: 1.1rem;
  color: var(--clr-white);
}


.card-form {
  background: var(--clr-white);
  padding: 40px;
  border-radius: 5px;
  color: var(--clr-dark);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 0.85rem;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--clr-border);
  border-radius: 4px;
}

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--clr-border);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 15px;
}

/* Animations */
.animate-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: 0.8s ease;
}

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

/* WhatsApp Button */
.whatsapp-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #25d366;
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  z-index: 9999;
  transition: var(--t-default);
}

.whatsapp-btn:hover {
  transform: scale(1.1) rotate(5deg);
  background-color: #128c7e;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

/* Mobile */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero__title {
    font-size: 2.5rem;
  }
  
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 2rem;
  }

  .whatsapp-btn {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
  }
}


/* Additional Utilities for Real Data */
.card-highlight {
  border-left: 5px solid var(--clr-primary);
  background: var(--clr-dark);
  padding: 2rem;
  margin-top: 2rem;
}

.badge {
  background: var(--clr-primary);
  color: white;
  padding: 4px 12px;
  font-size: 0.7rem;
  border-radius: 20px;
  text-transform: uppercase;
  font-weight: 700;
}

.align-center {
  align-items: center;
}

.text-right {
  text-align: right;
}

@media (max-width: 768px) {
  .text-right { text-align: left; margin-top: 10px; }
}

/* Modalities Grid */
.modalities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 3rem;
}

.modality-item {
  padding: 20px;
  background: var(--clr-white);
  border-top: 3px solid var(--clr-primary);
  box-shadow: var(--shadow);
}

.modality-item h4 {
  font-size: 0.9rem;
  margin-bottom: 10px;
  color: var(--clr-primary);
}

.modality-item p {
  font-size: 0.8rem;
  color: var(--clr-gray);
}

/* Clients List */
.clients-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  padding: 20px 0;
}

.client-name {
  font-family: var(--font-headings);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--clr-gray);
  opacity: 0.6;
  text-transform: uppercase;
  transition: opacity 0.3s ease;
}

.client-name:hover {
  opacity: 1;
  color: var(--clr-primary);
}

.portfolio-overlay div {
  text-align: center;
  padding: 20px;
}

.portfolio-overlay p {
  font-size: 0.8rem;
  margin-top: 5px;
}

@media (max-width: 768px) {
  .modalities-grid { grid-template-columns: 1fr; }
}

/* ─── Feature UFLA Section ─────────────────────────────── */
.feature-ufla {
  position: relative;
  min-height: 75vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  margin: 0;
}

.feature-ufla__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: 0;
}

.feature-ufla__content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  padding: 5rem 2rem;
}

.feature-ufla h2 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  margin: 1rem 0 1.5rem;
  line-height: 1.1;
  color: #fff;
}

.feature-ufla p {
  font-size: 1.15rem;
  line-height: 1.7;
  opacity: 0.88;
  max-width: 660px;
}

.feature-ufla__stats {
  display: flex;
  gap: 3rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.2);
}

.stat-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-box strong {
  font-size: 2rem;
  color: var(--clr-primary);
  font-family: var(--font-headings);
  font-weight: 800;
  line-height: 1;
}

.stat-box span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.65;
}

.badge--red {
  background: var(--clr-primary);
  color: #fff;
  padding: 5px 14px;
  font-size: 0.75rem;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-block;
}

/* ─── Client Logo Grid ─────────────────────────────────── */
.clients-logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem 3rem;
  align-items: center;
  justify-items: center;
  padding: 2rem 0;
}

.client-logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  width: 100%;
  filter: grayscale(100%);
  opacity: 0.55;
  transition: filter 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
}

.client-logo-item:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.08);
}

.client-logo-item img {
  max-height: 70px;
  max-width: 140px;
  object-fit: contain;
}

.client-logo-text {
  font-family: var(--font-headings);
  font-weight: 700;
  font-size: 1.1rem;
  color: #444;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .clients-logo-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 600px) {
  .clients-logo-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .feature-ufla__stats { gap: 1.5rem; flex-wrap: wrap; }
  .feature-ufla { min-height: 60vh; }
  .feature-ufla__bg { background-attachment: scroll; }
}