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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: #111;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: #fff;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #fff;
  border-bottom: 1px solid #eee;
  z-index: 1000;
}

.header-content {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  width: 50px;
}

.nav-link {
  font-size: 1rem;
  color: #333;
  transition: color 0.2s;
}

.nav-link:hover {
  color: #000;
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: calc(100vh - 70px);
  padding-top: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

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

.hero-logo {
  width: 350px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: #646464;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.8rem;
  background: #007bff;
  color: #fff;
  border-radius: 50px;
  font-size: 1rem;
  transition: background 0.3s;
}

.btn:hover {
  background: #0056b3;
}

/* ---------- Work Section ---------- */
.work {
  padding: 15vh 0 30vh 0;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.card {
  background: #fff;
  padding: 3rem;
  border-radius: 1rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  max-width: 700px;
  margin: 0 auto;
}

.card-subtitle {
  color: #007bff;
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.card-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 1rem;
}

.card-text {
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  line-height: 1.6;
}

.mail-link {
  font-weight: 600;
}

/* ---------- Footer ---------- */
.footer {
  margin-top: auto;
  padding: 1rem 0;
  text-align: center;
  color: #999;
  font-size: 0.9rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hero-logo {
    width: 250px;
  }

  .card {
    padding: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-logo {
    width: 200px;
  }

  .card {
    padding: 1.5rem;
  }
}