/* ===== CSS Custom Properties ===== */
:root {
  --primary: #0EA5E9;
  --primary-dark: #0284C7;
  --primary-light: #E0F2FE;
  --dark: #0F172A;
  --dark-mid: #1E293B;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6B7280;
  --gray-300: #D1D5DB;
  --gray-100: #F3F4F6;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--gray-700);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* ===== Utility ===== */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 8px;
}
.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 560px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14,165,233,0.3);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn-card {
  background: var(--primary);
  color: var(--white);
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-card:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* ===== Scroll Animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--transition), transform 0.7s var(--transition);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}
.header.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  padding: 10px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
}
.logo span { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.nav-links a:hover { color: var(--white); }
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-phone {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  font-weight: 500;
}
.header-cta {
  background: var(--primary);
  color: var(--white);
  padding: 10px 22px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition);
}
.header-cta:hover {
  background: var(--primary-dark);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-mid) 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(14,165,233,0.12) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 60px;
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(14,165,233,0.1);
  border: 1px solid rgba(14,165,233,0.2);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
}
.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
}
.hero-title .highlight { color: var(--primary); }
.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-badges {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.8);
  font-size: 0.85rem;
  font-weight: 500;
}
.hero-badge-item svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}
.hero-image-wrap {
  position: relative;
  z-index: 2;
}
.hero-image-wrap img {
  border-radius: var(--radius);
  width: 100%;
  height: 400px;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

/* ===== Estimate Form Card ===== */
.estimate-card {
  background: var(--white);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-lg);
  margin-top: 32px;
}
.estimate-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 20px;
}
.estimate-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.estimate-form .full-width {
  grid-column: 1 / -1;
}
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 4px;
}
.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--gray-900);
  background: var(--white);
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}
.estimate-form .btn-primary {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 1rem;
  margin-top: 4px;
}

/* ===== Stats ===== */
.stats {
  background: var(--white);
  padding: 60px 0;
  border-bottom: 1px solid var(--gray-100);
}
.stats .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  padding: 24px;
}
.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--gray-500);
  font-weight: 500;
}

/* ===== Why Choose Us ===== */
.why-us {
  padding: 100px 0;
  background: var(--gray-100);
}
.why-us .section-header {
  text-align: center;
  margin-bottom: 60px;
}
.why-us .section-subtitle {
  margin: 0 auto;
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.why-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
}
.why-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(14,165,233,0.15);
}
.why-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.why-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}
.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}
.why-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ===== Services ===== */
.services {
  padding: 100px 0;
  background: var(--white);
}
.services .section-header {
  text-align: center;
  margin-bottom: 60px;
}
.services .section-subtitle {
  margin: 0 auto;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  background: var(--white);
  border: 1.5px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.service-card:hover::before {
  transform: scaleX(1);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(14,165,233,0.15);
}
.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.service-icon svg {
  width: 26px;
  height: 26px;
  color: var(--primary);
}
.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* ===== About ===== */
.about {
  padding: 100px 0;
  background: var(--gray-100);
}
.about .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-image-wrap {
  position: relative;
}
.about-image-wrap img {
  border-radius: var(--radius);
  width: 100%;
  height: 420px;
  object-fit: cover;
  box-shadow: var(--shadow);
}
.about-content .section-title {
  margin-top: 8px;
}
.about-text {
  font-size: 1rem;
  color: var(--gray-500);
  margin-bottom: 28px;
  line-height: 1.7;
}
.about-badges {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.about-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--gray-300);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
}
.about-badge svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
}

/* ===== Testimonials ===== */
.testimonials {
  padding: 100px 0;
  background: var(--white);
}
.testimonials .section-header {
  text-align: center;
  margin-bottom: 60px;
}
.testimonials .section-subtitle {
  margin: 0 auto;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.testimonial-card {
  background: var(--white);
  border: 1.5px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.stars {
  display: flex;
  gap: 3px;
  margin-bottom: 16px;
}
.stars svg {
  width: 18px;
  height: 18px;
  color: #FBBF24;
  fill: #FBBF24;
}
.testimonial-text {
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
}
.author-name {
  font-weight: 700;
  color: var(--gray-900);
  font-size: 0.95rem;
}
.author-role {
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  padding: 80px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo {
  margin-bottom: 16px;
  display: inline-block;
}
.footer-brand p {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}
.footer h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--primary); }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
}
.footer-contact svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}
.footer-bottom {
  padding: 24px 0;
  text-align: center;
  color: rgba(255,255,255,0.35);
  font-size: 0.85rem;
}

/* ===== Mobile Nav Overlay ===== */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.97);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.mobile-nav.active { display: flex; }
.mobile-nav a {
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 600;
}
.mobile-nav .close-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: none;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
}

/* ===== Responsive 1024px ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .hero-subtitle { margin: 0 auto 32px; }
  .hero-badges { justify-content: center; }
  .hero-image-wrap { max-width: 500px; margin: 0 auto; }
  .estimate-form { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about .container { grid-template-columns: 1fr; gap: 40px; }
  .about-image-wrap { max-width: 500px; }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== Responsive 768px ===== */
@media (max-width: 768px) {
  .nav-links, .header-right { display: none; }
  .hamburger { display: flex; }
  .hero-title { font-size: 2.2rem; }
  .section-title { font-size: 1.75rem; }
  .stats .container { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat-number { font-size: 2rem; }
  .why-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .services-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .estimate-form { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-badges { flex-direction: column; align-items: center; }
}