/* =============================================
   Interstate Construction of NC – styles.css
   Wallpaper Installation | Charlotte, NC
   ============================================= */

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

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

:root {
  --primary:   #1a3a5c;
  --accent:    #c8922a;
  --light:     #f5f1eb;
  --dark:      #0d1f33;
  --white:     #ffffff;
  --gray:      #6b7280;
  --card-bg:   rgba(255,255,255,0.08);
  --radius:    14px;
  --shadow:    0 8px 32px rgba(0,0,0,0.18);
  --transition:0.35s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  color: #1e293b;
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

h1,h2,h3,h4 { font-family: 'Playfair Display', serif; line-height: 1.2; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: 1.25rem; }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
section { padding: 90px 20px; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ── Utility ── */
.section-label {
  font-family: 'Montserrat', sans-serif;
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}
.section-title { margin-bottom: 18px; color: var(--primary); }
.section-sub   { color: var(--gray); max-width: 640px; margin-bottom: 50px; }

.btn {
  display: inline-block;
  padding: 15px 36px;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .04em;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(200,146,42,.4);
}
.btn-primary:hover { background: #b07d20; transform: translateY(-3px); box-shadow: 0 8px 28px rgba(200,146,42,.5); }
.btn-outline {
  background: transparent;
  border: 2px solid var(--white);
  color: var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--primary); }

/* ── Navigation ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 30px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13,31,51,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition);
}
#navbar.scrolled { background: rgba(13,31,51,0.98); }

.nav-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
}
.nav-brand span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 6px;
  list-style: none;
}
.nav-links a {
  color: rgba(255,255,255,0.82);
  font-family: 'Montserrat', sans-serif;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .05em;
  padding: 8px 12px;
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 12px; right: 12px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 26px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.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 {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(160deg, rgba(13,31,51,0.82) 0%, rgba(200,146,42,0.25) 100%),
    url('../images/wallpaper-installation-charlotte-nc-hero.jpg') center/cover no-repeat;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13,31,51,0.55) 0%, rgba(13,31,51,0.75) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  padding: 0 20px;
}
.hero-badge {
  display: inline-block;
  background: rgba(200,146,42,0.2);
  border: 1px solid rgba(200,146,42,0.5);
  color: #f0c060;
  font-family: 'Montserrat', sans-serif;
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  padding: 7px 20px;
  border-radius: 50px;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  color: var(--white);
  text-shadow: 0 4px 24px rgba(0,0,0,0.5);
  margin-bottom: 22px;
  font-weight: 900;
}
.hero-content p {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: rgba(255,255,255,0.88);
  margin-bottom: 38px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 60px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat strong {
  display: block;
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  color: var(--accent);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.hero-stat span { color: rgba(255,255,255,0.75); font-size: .85rem; }

/* ── About ── */
#about {
  background: linear-gradient(135deg, #f0ebe3 0%, #e8dfd4 100%);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-image-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-image-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.about-image-wrap:hover img { transform: scale(1.04); }
.about-badge-img {
  position: absolute;
  bottom: 20px; right: 20px;
  background: var(--accent);
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: .8rem;
  padding: 10px 18px;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.about-card {
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius);
  padding: 44px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.08);
}
.about-card p { color: #374151; margin-bottom: 18px; }
.about-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}
.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .95rem;
  color: var(--primary);
  font-weight: 500;
}
.about-feature .check {
  width: 22px; height: 22px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--white);
  font-size: .7rem;
}

/* ── Services ── */
#services {
  background: var(--white);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  transition: transform var(--transition), box-shadow var(--transition);
  background: var(--white);
  border: 1px solid #e5e7eb;
}
.service-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 16px 48px rgba(0,0,0,0.15);
}
.service-img-wrap {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.service-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.service-card:hover .service-img-wrap img { transform: scale(1.08); }
.service-icon-overlay {
  position: absolute;
  bottom: -20px; right: 20px;
  width: 48px; height: 48px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(200,146,42,0.4);
  font-size: 1.3rem;
}
.service-body { padding: 30px 24px 26px; }
.service-body h3 { color: var(--primary); margin-bottom: 10px; }
.service-body p { color: var(--gray); font-size: .93rem; }

/* ── Why Choose Us ── */
#why {
  background: linear-gradient(135deg, #1a3a5c 0%, #0d1f33 100%);
}
#why .section-title { color: var(--white); }
#why .section-sub   { color: rgba(255,255,255,0.7); }
#why .section-label { color: var(--accent); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.why-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: transform var(--transition), background var(--transition);
  backdrop-filter: blur(8px);
}
.why-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,0.12);
}
.why-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, var(--accent), #e8a83a);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
  box-shadow: 0 6px 20px rgba(200,146,42,0.35);
}
.why-card h3 { color: var(--white); margin-bottom: 12px; }
.why-card p  { color: rgba(255,255,255,0.72); font-size: .93rem; }

/* ── Reviews ── */
#reviews {
  background: linear-gradient(135deg, #fdf8f2 0%, #f5ede0 100%);
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.07);
  border-top: 4px solid var(--accent);
  transition: transform var(--transition), box-shadow var(--transition);
}
.review-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}
.review-stars { color: var(--accent); font-size: 1.1rem; margin-bottom: 14px; letter-spacing: 2px; }
.review-text {
  font-style: italic;
  color: #374151;
  margin-bottom: 18px;
  font-size: .95rem;
  line-height: 1.75;
}
.review-author {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: .85rem;
  color: var(--primary);
}

/* ── Service Areas ── */
#areas {
  background: url('../images/wallpaper-installation-charlotte-nc-areas-bg.jpg') center/cover no-repeat fixed;
  position: relative;
}
#areas::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,31,51,0.88) 0%, rgba(26,58,92,0.82) 100%);
}
#areas .container { position: relative; z-index: 2; }
#areas .section-title { color: var(--white); }
#areas .section-sub   { color: rgba(255,255,255,0.75); }
#areas .section-label { color: var(--accent); }

.areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.area-item {
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: .9rem;
  transition: background var(--transition), transform var(--transition);
  backdrop-filter: blur(6px);
}
.area-item:hover {
  background: rgba(200,146,42,0.2);
  transform: translateX(4px);
}
.area-dot {
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── FAQ ── */
#faq { background: var(--white); }

.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  border: 1px solid #e5e7eb;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: .97rem;
  color: var(--primary);
  text-align: left;
  transition: background var(--transition);
}
.faq-question:hover { background: #f9fafb; }
.faq-question.open  { background: var(--primary); color: var(--white); }
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-question.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  background: #f9fafb;
}
.faq-answer.open { max-height: 300px; }
.faq-answer p { padding: 20px 28px; color: #374151; font-size: .95rem; }

/* ── Contact ── */
#contact {
  background: linear-gradient(135deg, #f0ebe3 0%, #e8dfd4 100%);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}
.contact-info h3 { color: var(--primary); margin-bottom: 20px; }
.contact-info p  { color: var(--gray); margin-bottom: 28px; }

.nap-block {
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.07);
}
.nap-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  font-size: .95rem;
  color: #1e293b;
}
.nap-row:last-child { margin-bottom: 0; }
.nap-icon {
  width: 36px; height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
  flex-shrink: 0;
}
.nap-row a { color: var(--primary); font-weight: 500; }
.nap-row a:hover { color: var(--accent); }

.contact-form-wrap {
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius);
  padding: 44px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.09);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--primary);
  margin-bottom: 7px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid #d1d5db;
  border-radius: 10px;
  font-family: 'Inter', sans-serif;
  font-size: .95rem;
  color: #1e293b;
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200,146,42,0.15);
}
.form-group textarea { resize: vertical; min-height: 120px; }

#form-success {
  display: none;
  text-align: center;
  padding: 40px;
  background: linear-gradient(135deg, #d4edda, #c3e6cb);
  border-radius: var(--radius);
  color: #155724;
}
#form-success h3 { font-size: 1.5rem; margin-bottom: 10px; }

/* ── Map ── */
#map-section { padding: 0; }
#map-section iframe {
  width: 100%;
  height: 420px;
  border: none;
  display: block;
}

/* ── Footer ── */
#footer {
  background: linear-gradient(135deg, #0d1f33 0%, #1a3a5c 100%);
  color: rgba(255,255,255,0.75);
  padding: 70px 20px 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 50px;
}
.footer-brand h3 {
  font-family: 'Playfair Display', serif;
  color: var(--white);
  font-size: 1.3rem;
  margin-bottom: 14px;
}
.footer-brand h3 span { color: var(--accent); }
.footer-brand p { font-size: .9rem; line-height: 1.8; }

.footer-col h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  color: rgba(255,255,255,0.7);
  font-size: .9rem;
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); }

.footer-nap { display: flex; flex-direction: column; gap: 10px; font-size: .9rem; }
.footer-nap a { color: rgba(255,255,255,0.7); }
.footer-nap a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .82rem;
  color: rgba(255,255,255,0.45);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .services-grid, .why-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: rgba(13,31,51,0.98);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 16px; font-size: .9rem; }

  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-image-wrap { height: 280px; }
  .about-image-wrap img { height: 280px; }
  .services-grid, .why-grid, .reviews-grid, .areas-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stats { gap: 24px; }
}

@media (max-width: 480px) {
  section { padding: 60px 16px; }
  .contact-form-wrap, .about-card { padding: 28px 20px; }
  .reviews-grid { grid-template-columns: 1fr; }
}

/* ── Animations ── */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.fade-in-up { animation: fadeInUp 0.7s ease both; }