:root {
  --blue: #a8e6ff;
  --darkblue: #6bc8ff;
  --text: #1e1e1e;
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: #b3e0ff;
  color: var(--text);
  line-height: 1.6;
  padding-top: 72px;
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

header {
  background: white;
  padding: 1rem 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: floatIn 0.8s ease-out;
}

.nav-toggle {
  display: none !important;
  background: transparent;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.nav-toggle:hover {
  background: rgba(11, 78, 126, 0.05);
  transform: scale(1.03);
}

.nav-toggle.open {
  transform: rotate(90deg);
}

.logo {
  height: 65px;
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
  margin-left: auto;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  transition: 0.3s;
}

nav a:hover {
  color: var(--darkblue);
}

.nav-btn {
  background: #ff6b6b;
  color: white !important;
  padding: 0.8rem 1.8rem;
  border-radius: 25px;
}

.nav-btn:hover {
  background: #e55555;
}

.hero {
  background-color: #b3e0ff;
  position: relative;
  text-align: center;
  padding: 14rem 1rem 8rem;
  color: #ffffff;
  animation: floatIn 1s ease-out;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: transparent;
  pointer-events: none;
}

.hero h1 {
  font-size: 3.6rem;
  font-weight: 900;
  margin-bottom: 1rem;
  color: #ffffff;
  text-shadow: 0 6px 30px rgba(2, 6, 23, 0.5);
  animation: floatIn 1.2s ease-out;
  position: relative;
  z-index: 2;
}

.hero p {
  font-size: 1.6rem;
  max-width: 900px;
  margin: 0 auto 2rem;
  animation: floatIn 1.4s ease-out;
  color: rgba(255, 255, 255, 0.92);
  position: relative;
  z-index: 2;
}

.big-btn {
  background: #ff6b6b;
  color: white;
  padding: 1.6rem 4rem;
  font-size: 1.7rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
  display: inline-block;
  transition: 0.3s;
  position: relative;
  z-index: 3;
}

.big-btn:hover {
  transform: scale(1.05);
}

.section {
  padding: 6rem 1rem;
  text-align: center;
  animation: floatIn 1s ease-out;
}

.benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.benefit {
  background: white;
  padding: 3rem 2rem;
  border-radius: 16px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  animation: floatIn 1.2s ease-out;
}

.benefit h3 {
  font-size: 1.8rem;
  color: var(--darkblue);
  margin-bottom: 0.8rem;
}

.benefit p {
  font-size: 1.1rem;
}

.bg-light {
  background: #b3e0ff;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

.seller-form {
  background: linear-gradient(135deg, var(--blue), #b3e0ff);
  padding: 5rem 2rem;
  border-radius: 20px;
  margin: 4rem auto;
  max-width: 900px;
  animation: floatIn 1.4s ease-out;
  border: 3px solid #6bc8ff;
}

.seller-form h2 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.seller-form p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

input,
select {
  width: 100%;
  padding: 1.4rem;
  border-radius: 10px;
  border: none;
  font-size: 1rem;
  font-family: 'Poppins', sans-serif;
}

.submit-btn {
  background: #ff6b6b;
  color: white;
  padding: 1.8rem;
  font-size: 1.6rem;
  font-weight: 700;
  cursor: pointer;
  grid-column: 1/-1;
  border-radius: 50px;
  border: none;
  transition: 0.3s;
}

.submit-btn:hover {
  transform: scale(1.02);
}

footer {
  background: #1e1e1e;
  color: white;
  text-align: center;
  padding: 3rem 1rem;
  font-size: 1.1rem;
}

@media (max-width: 768px) {
  body {
    padding-top: 64px;
  }

  header {
    padding: 0.75rem 1rem;
    height: 64px;
  }

  .hero {
    padding: 8rem 1rem 4rem;
  }

  .hero h1 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
  }

  .hero p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
  }

  .big-btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    width: 100%;
    max-width: 400px;
    box-sizing: border-box;
  }

  .section {
    padding: 4rem 1rem;
  }

  .benefits {
    gap: 2rem;
  }

  .benefit {
    padding: 2rem 1.5rem;
  }

  .benefit h3 {
    font-size: 1.25rem;
  }

  .seller-form {
    padding: 2rem 1rem;
    margin: 2rem auto;
    border-radius: 15px;
    max-width: 95%;
    width: 100%;
    box-sizing: border-box;
  }

  .seller-form h2 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
  }

  .seller-form p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }

  .form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    row-gap: 1.5rem;
    width: 100%;
  }

  input,
  select {
    padding: 1.2rem;
    font-size: 1rem;
    min-height: 48px;
  }

  .submit-btn {
    padding: 1.5rem 1rem;
    font-size: 1.2rem;
    min-height: 48px;
    margin-top: 1.5rem;
  }

  .container {
    padding: 0 1rem;
  }

  .nav-toggle {
    display: inline-flex !important;
    min-height: 44px;
    min-width: 44px;
  }

  nav {
    display: none;
    position: absolute;
    top: 64px;
    right: 1rem;
    left: 1rem;
    background: white;
    flex-direction: column;
    gap: 0.8rem;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    width: calc(100% - 2rem);
    z-index: 999;
  }

  nav a {
    padding: 0.75rem 0;
    font-size: 1.05rem;
  }

  nav.open {
    display: flex;
  }

  footer {
    padding: 2rem 1rem;
    font-size: 0.95rem;
  }
}