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

:root {
  --color-primary: #1a1a2e;
  --color-accent: #16213e;
  --color-text: #2d2d2d;
  --color-text-light: #666;
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fb;
  --color-border: #e8e8e8;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 50px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: #0f0f1a;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-large {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-full {
  width: 100%;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-primary);
}

.nav {
  display: flex;
  gap: 36px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-light);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  padding: 140px 0 100px;
  background: var(--color-bg);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-primary);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-text p {
  font-size: 17px;
  color: var(--color-text-light);
  margin-bottom: 32px;
  max-width: 460px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-images {
  display: flex;
  gap: 20px;
  justify-content: flex-end;
}

.hero-img-card {
  width: 240px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-img-card img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.hero-img-offset {
  margin-top: 40px;
}

/* ===== About ===== */
.about {
  padding: 100px 0;
  background: var(--color-bg-alt);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  letter-spacing: -0.3px;
}

.about-text p {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.75;
}

.about-text .btn {
  margin-top: 12px;
}

.about-images {
  display: flex;
  gap: 16px;
}

.about-img-card {
  flex: 1;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.about-img-card img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

.about-img-card:first-child {
  margin-top: 30px;
}

/* ===== Services ===== */
.services {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.section-header p {
  font-size: 16px;
  color: var(--color-text-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg-alt);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14.5px;
  color: var(--color-text-light);
  line-height: 1.65;
}

/* ===== Why Us ===== */
.why-us {
  padding: 100px 0;
  background: var(--color-bg-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

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

.feature-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.2;
  margin-bottom: 12px;
}

.feature-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== Gallery ===== */
.gallery {
  padding: 100px 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4/3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* ===== CTA ===== */
.cta {
  padding: 80px 0;
  background: var(--color-primary);
  text-align: center;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.cta-content p {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
}

.cta .btn-primary {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}

.cta .btn-primary:hover {
  background: transparent;
  color: #fff;
  border-color: #fff;
}

/* ===== Contact ===== */
.contact {
  padding: 100px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.contact-card h3 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.contact-card p {
  font-size: 15px;
  color: var(--color-primary);
  line-height: 1.5;
}

.contact-card a:hover {
  opacity: 0.7;
}

.contact-form-wrapper {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 14.5px;
  font-family: var(--font);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,26,46,0.08);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-primary);
  color: #fff;
  padding-top: 60px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  display: inline-block;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #fff;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero-content,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-images {
    justify-content: center;
  }

  .hero-text h1 {
    font-size: 38px;
  }

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

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

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

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

@media (max-width: 640px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 110px 0 60px;
  }

  .hero-text h1 {
    font-size: 32px;
  }

  .hero-images {
    flex-direction: column;
    align-items: center;
  }

  .hero-img-card {
    width: 100%;
    max-width: 300px;
  }

  .hero-img-offset {
    margin-top: 0;
  }

  .hero-img-card img {
    height: 240px;
  }

  .about-images {
    flex-direction: column;
  }

  .about-img-card:first-child {
    margin-top: 0;
  }

  .about-img-card img {
    height: 240px;
  }

  .services-grid,
  .features-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .contact-info {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section-header h2,
  .about-text h2,
  .cta-content h2 {
    font-size: 28px;
  }
}