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

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f7f7f7;
  color: #222;
}

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

/* NAVBAR */
.navbar {
  height: 74px;
  border-top: 1px solid #9cb2a4;
  border-bottom: 1px solid #d9d9d9;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 60px;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.courses,
.nav-right a {
  color: #2468f2;
  font-weight: 700;
  font-size: 16px;
}

.search-box {
  width: 240px;
  height: 46px;
  background: #f0f0f0;
  border-radius: 4px;
  display: flex;
  align-items: center;
  padding: 0 14px;
}

.search-box input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 16px;
  color: #2468f2;
  font-weight: 700;
}

.search-box input::placeholder {
  color: #2468f2;
}

.search-icon {
  font-size: 18px;
  opacity: 0.7;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  color: #23b37a;
  font-size: 28px;
}

.logo-text {
  color: #153b8a;
  font-weight: 700;
  font-size: 22px;
}

.signup {
  font-weight: 700;
}

/* HERO */
.hero {
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - 74px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  padding: 50px 60px 80px;
}

.hero-image {
  flex: 1;
  min-height: 620px;
  position: relative;
}

.hero-text {
  flex: 1;
  max-width: 560px;
}

.hero-text h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 76px;
  line-height: 1.05;
  font-weight: 700;
  color: #232433;
  margin-bottom: 12px;
}

.underline {
  width: 350px;
  height: 8px;
  border-bottom: 4px solid #2fd0a0;
  border-radius: 50%;
  margin-bottom: 36px;
}

.hero-text p {
  font-size: 20px;
  line-height: 1.8;
  color: #313443;
  max-width: 720px;
  margin-bottom: 34px;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-buttons a {
  background: #2567f2;
  color: white;
  font-weight: 700;
  padding: 14px 24px;
  border-radius: 4px;
  font-size: 16px;
}

/* COLLAGE */
.shape {
  position: absolute;
  z-index: 1;
}

.shape-blue {
  width: 300px;
  height: 280px;
  background: linear-gradient(135deg, #2e4488, #5569b8, #17254d);
  border-radius: 42% 58% 39% 61% / 42% 38% 62% 58%;
  left: 70px;
  top: 90px;
}

.shape-pink {
  width: 340px;
  height: 200px;
  background: linear-gradient(135deg, #fe2b88, #ff7a7a, #ffb37a);
  border-radius: 38% 62% 45% 55% / 51% 36% 64% 49%;
  left: 260px;
  bottom: 10px;
  transform: rotate(10deg);
}

.shape-light {
  width: 180px;
  height: 120px;
  background: #d9f3f6;
  border-radius: 20px 50px 20px 50px;
  right: 80px;
  top: 240px;
  transform: rotate(-18deg);
}

.dots {
  position: absolute;
  width: 120px;
  height: 180px;
  left: 20px;
  bottom: 120px;
  background-image: radial-gradient(#bbbbbb 2px, transparent 2px);
  background-size: 24px 24px;
  z-index: 0;
}

.student {
  position: absolute;
  object-fit: cover;
  z-index: 2;
}

.student-1 {
  width: 240px;
  height: 250px;
  left: 90px;
  top: 250px;
  border-radius: 18px;
}

.student-2 {
  width: 300px;
  height: 360px;
  left: 260px;
  top: 80px;
  border-radius: 24px;
}

.student-3 {
  width: 420px;
  height: 220px;
  left: 210px;
  top: 360px;
  border-radius: 24px;
}

/* TABLET */
@media (max-width: 1200px) {
  .navbar {
    padding: 0 30px;
  }

  .hero {
    padding: 40px 30px 60px;
    gap: 30px;
  }

  .hero-text h1 {
    font-size: 58px;
  }

  .hero-text p {
    font-size: 18px;
  }
}

/* MOBILE */
@media (max-width: 900px) {
  .navbar {
    flex-wrap: wrap;
    height: auto;
    gap: 16px;
    padding: 16px 20px;
  }

  .nav-left,
  .nav-right {
    gap: 16px;
    flex-wrap: wrap;
  }

  .search-box {
    width: 180px;
  }

  .logo {
    width: 100%;
    justify-content: center;
    order: -1;
  }

  .hero {
    flex-direction: column;
    padding: 30px 20px 50px;
  }

  .hero-image {
    width: 100%;
    min-height: 520px;
  }

  .hero-text {
    max-width: 100%;
    text-align: left;
  }

  .hero-text h1 {
    font-size: 44px;
  }

  .underline {
    width: 220px;
  }
}

@media (max-width: 600px) {
  .nav-right {
    display: none;
  }

  .search-box {
    width: 150px;
    height: 40px;
  }

  .courses {
    font-size: 14px;
  }

  .logo-text {
    font-size: 20px;
  }

  .hero-image {
    min-height: 420px;
  }

  .hero-text h1 {
    font-size: 34px;
  }

  .hero-text p {
    font-size: 16px;
    line-height: 1.6;
  }

  .hero-buttons a {
    padding: 12px 16px;
    font-size: 14px;
  }

  .shape-blue {
    width: 200px;
    height: 190px;
    left: 40px;
    top: 70px;
  }

  .shape-pink {
    width: 220px;
    height: 120px;
    left: 150px;
    bottom: 10px;
  }

  .shape-light {
    width: 120px;
    height: 80px;
    right: 20px;
    top: 190px;
  }

  .student-1 {
    width: 150px;
    height: 160px;
    left: 50px;
    top: 170px;
  }

  .student-2 {
    width: 180px;
    height: 220px;
    left: 160px;
    top: 70px;
  }

  .student-3 {
    width: 260px;
    height: 140px;
    left: 110px;
    top: 250px;
  }

  .dots {
    width: 90px;
    height: 120px;
    left: 10px;
    bottom: 70px;
  }
}