:root {
  --dark-blue: #0f1626;
  --gold: #ab987a;
  --coral: #ff533d;
  --light-gray: #efefef;
  --white: #f5f5f5;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--dark-blue);
  color: var(--white);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

h1 {
  text-align: center;
  margin-bottom: 3rem;
  color: var(--gold);
  font-size: 2.5rem;
}

.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 1rem;
}

.tutorial-card {
  background: linear-gradient(145deg, var(--dark-blue), #1a2540);
  border-radius: 15px;
  padding: 2rem;
  text-decoration: none;
  color: var(--white);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--gold);
}

.tutorial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.card-content h2 {
  color: var(--coral);
  margin-bottom: 1rem;
}

.card-content p {
  color: var(--light-gray);
  margin-bottom: 1.5rem;
}

.preview {
  height: 150px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.flexbox-preview {
  display: flex;
  justify-content: center;
  align-items: center;
}

.grid-preview {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 0.5rem;
}

.box {
  width: 40px;
  height: 40px;
  background-color: var(--coral);
  border-radius: 5px;
  transition: transform 0.3s ease;
}

.tutorial-card:hover .box {
  transform: scale(1.1);
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  .tutorials-grid {
    grid-template-columns: 1fr;
  }
}

.back-button {
  display: inline-block;
  color: var(--gold);
  text-decoration: none;
  margin-bottom: 2rem;
  font-size: 1.2rem;
  transition: color 0.3s ease;
  padding: 0.5rem 1rem;
  border: 1px solid var(--gold);
  border-radius: 5px;
}

.back-button:hover {
  color: var(--coral);
  border-color: var(--coral);
  transform: translateX(-5px);
}