/* COLORS */
:root {
  --white: #ffffff;
  --black: #000000;
  --cyan: #00ffff;
  --gray: #f5f5f5;

  --radius: 12px;
  --font-main: "Inter", Arial, sans-serif;
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-main);
  background: var(--white);
  color: var(--black);
  line-height: 1.5;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* HEADER */
.header {
  padding: 24px 0;
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid #eee;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 20px;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border: 3px solid var(--black);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 15px;
}

.nav a {
  text-decoration: none;
  color: var(--black);
}

.nav .btn.small {
  padding: 8px 18px;
  font-size: 14px;
}

/* HERO */
.hero {
  padding: 110px 0 120px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
}

.subtitle {
  font-size: 18px;
  margin-bottom: 30px;
  color: #333;
}

/* SHARED SECTION */
.section {
  padding: 80px 0;
}

.section.gray {
  background: var(--gray);
}

.section h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

/* SERVICES GRID */
.service-grid {
  display: grid;
  gap: 30px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 20px;
}

.service-card {
  background: var(--white);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: 0 0 0 1px #e2e2e2;
}

.service-card h3 {
  margin-bottom: 12px;
}

/* CONTACT */
.contact-box {
  margin: 20px 0 30px;
  background: var(--gray);
  padding: 20px;
  border-radius: var(--radius);
}

/* BUTTON */
.btn {
  display: inline-block;
  background: var(--cyan);
  color: var(--black);
  padding: 12px 26px;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.btn:hover {
  opacity: 0.75;
}

/* MOBILE */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 36px;
  }
}