/* ============================================
   GWC CONSTRUCTION - GLOBAL STYLESHEET
   ============================================ */

:root {
  --brand-yellow: #F5B301;
  --brand-yellow-dark: #D99A00;
  --brand-blue: #0056B3;
  --brand-blue-dark: #003D80;
  --brand-blue-light: #E8F1FB;
  --white: #FFFFFF;
  --off-white: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-300: #CBD5E1;
  --gray-500: #64748B;
  --gray-700: #334155;
  --dark: #0F172A;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);
  --radius: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--white);
  color: var(--dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  padding-top: 80px;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }

a { text-decoration: none; transition: all 0.25s ease; }

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

/* ---------- Header ---------- */
header {
  background: var(--white);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  border-bottom: 3px solid var(--brand-yellow);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.logo { height: 70px; width: auto; }

/* ---------- Navigation ---------- */
nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--dark);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 0;
  position: relative;
}

nav a:hover,
nav a.active {
  color: var(--brand-blue);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--brand-yellow);
  transition: width 0.3s ease;
}

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

/* ---------- Social Icons ---------- */
.social-icons {
  display: flex;
  gap: 12px;
}

.social-icons a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  color: var(--gray-700);
  font-size: 0.95rem;
  transition: all 0.25s ease;
}

.social-icons a:hover {
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.social-icons a.facebook:hover { background: #1877F2; }
.social-icons a.instagram:hover { background: #E4405F; }
.social-icons a.linkedin:hover { background: #0A66C2; }
.social-icons a.whatsapp:hover { background: #25D366; }

/* ---------- Hamburger ---------- */
.menu-toggle {
  display: none;
  font-size: 1.6rem;
  color: var(--dark);
  background: none;
  border: none;
  cursor: pointer;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.25s ease;
  text-align: center;
}

.btn-primary {
  background: var(--brand-yellow);
  color: var(--dark);
  border-color: var(--brand-yellow);
}

.btn-primary:hover {
  background: var(--brand-yellow-dark);
  border-color: var(--brand-yellow-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--brand-blue);
  color: var(--white);
  border-color: var(--brand-blue);
}

.btn-secondary:hover {
  background: var(--brand-blue-dark);
  border-color: var(--brand-blue-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--brand-blue);
  border-color: var(--brand-blue);
}

.btn-outline:hover {
  background: var(--brand-blue);
  color: var(--white);
}

/* ---------- Section Heading ---------- */
.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--dark);
  margin-bottom: 12px;
}

.section-title p {
  color: var(--gray-500);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-title h2 span {
  color: var(--brand-blue);
}

/* ---------- Yellow Divider ---------- */
.divider {
  width: 60px;
  height: 4px;
  background: var(--brand-yellow);
  margin: 15px auto 20px;
  border-radius: 2px;
}

/* ---------- Footer ---------- */
footer {
  background: var(--dark);
  color: var(--gray-300);
  padding: 40px 20px 20px;
  margin-top: auto;
  border-top: 4px solid var(--brand-yellow);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

footer p {
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 15px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--gray-300);
  font-size: 0.85rem;
}

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

/* ---------- Mobile ---------- */
@media (max-width: 768px) {
  .menu-toggle { display: block; }

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-md);
    border-top: 3px solid var(--brand-yellow);
  }

  nav.active { display: block; }

  nav ul {
    flex-direction: column;
    gap: 0;
    padding: 10px 0;
  }

  nav a {
    display: block;
    padding: 14px 25px;
    width: 100%;
  }

  nav a::after { display: none; }

  .social-icons { margin-right: 12px; }

  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.6rem; }

  body { padding-top: 70px; }
  .logo { height: 45px; }
}


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

.site-footer {
  background: linear-gradient(180deg, #0F172A 0%, #0A0F1C 100%);
  color: #CBD5E1;
  margin-top: auto;
  position: relative;
  overflow: hidden;
}

/* Yellow top accent */
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--brand-yellow), var(--brand-blue), var(--brand-yellow));
}

/* ---------- Footer Top ---------- */
.footer-top {
  padding: 70px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 40px;
}

/* ---------- Column Base ---------- */
.footer-col h4 {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 12px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 35px;
  height: 3px;
  background: var(--brand-yellow);
  border-radius: 2px;
}

/* ---------- Column 1: About ---------- */
.footer-about .footer-logo {
  display: inline-block;
  margin-bottom: 20px;
}

.footer-about .footer-logo img {
  height: 55px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: transform 0.3s ease;
}

.footer-about .footer-logo:hover img {
  transform: scale(1.05);
}

.footer-about p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: #94A3B8;
  margin-bottom: 22px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  color: #CBD5E1;
  font-size: 1rem;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-social a:hover {
  transform: translateY(-4px);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.footer-social a.facebook:hover { background: #1877F2; border-color: #1877F2; }
.footer-social a.instagram:hover { background: #E4405F; border-color: #E4405F; }
.footer-social a.linkedin:hover { background: #0A66C2; border-color: #0A66C2; }
.footer-social a.whatsapp:hover { background: #25D366; border-color: #25D366; }

/* ---------- Column 2 & 3: Links ---------- */
.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links-list li {
  margin-bottom: 12px;
}

.footer-links-list a {
  color: #94A3B8;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
}

.footer-links-list a i {
  font-size: 0.7rem;
  color: var(--brand-yellow);
  transition: transform 0.25s ease;
}

.footer-links-list a:hover {
  color: var(--brand-yellow);
  padding-left: 5px;
}

.footer-links-list a:hover i {
  transform: translateX(3px);
}

/* ---------- Column 4: Contact ---------- */
.footer-contact .contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}

.footer-contact .contact-item i {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(245, 179, 1, 0.1);
  color: var(--brand-yellow);
  border-radius: 8px;
  font-size: 0.95rem;
}

.footer-contact .contact-item div {
  display: flex;
  flex-direction: column;
}

.footer-contact .contact-item strong {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.footer-contact .contact-item span,
.footer-contact .contact-item a {
  color: #94A3B8;
  font-size: 0.85rem;
  transition: color 0.25s ease;
}

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

/* ---------- Newsletter Strip ---------- */
.footer-newsletter {
  background: rgba(0, 86, 179, 0.15);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 30px 0;
}

.newsletter-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.newsletter-text h4 {
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.newsletter-text p {
  color: #94A3B8;
  font-size: 0.88rem;
  margin: 0;
}

.newsletter-form {
  display: flex;
  gap: 10px;
  flex: 1;
  max-width: 500px;
  min-width: 280px;
}

.newsletter-form input {
  flex: 1;
  padding: 13px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: var(--white);
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all 0.25s ease;
}

.newsletter-form input::placeholder {
  color: #64748B;
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--brand-yellow);
  background: rgba(255, 255, 255, 0.08);
}

.newsletter-form button {
  padding: 13px 24px;
  background: var(--brand-yellow);
  color: var(--dark);
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: all 0.25s ease;
}

.newsletter-form button:hover {
  background: var(--brand-yellow-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 179, 1, 0.25);
}

/* ---------- Footer Bottom ---------- */
.footer-bottom {
  padding: 22px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.footer-bottom p {
  color: #94A3B8;
  font-size: 0.88rem;
  margin: 0;
}

.footer-bottom p strong {
  color: var(--brand-yellow);
  font-weight: 600;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-bottom-links a {
  color: #94A3B8;
  font-size: 0.85rem;
  transition: color 0.25s ease;
}

.footer-bottom-links a:hover {
  color: var(--brand-yellow);
}

.footer-bottom-links span {
  color: #475569;
  font-size: 0.7rem;
}

/* ---------- Back to Top Button ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--brand-yellow);
  color: var(--dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 8px 25px rgba(245, 179, 1, 0.4);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--brand-blue);
  color: var(--white);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 86, 179, 0.4);
}

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 35px;
  }
}

@media (max-width: 600px) {
  .footer-top {
    padding: 50px 0 30px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .newsletter-inner {
    flex-direction: column;
    text-align: center;
  }

  .newsletter-form {
    width: 100%;
    max-width: 100%;
    flex-direction: column;
  }

  .newsletter-form button {
    justify-content: center;
  }

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

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}