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

/* Задание 1 */
.b1 {
  background: linear-gradient(to right, #007bff, #00c6ff);
  padding: 15px 0;
  height: 80px;
}
.b2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.b3 {
  width: 100px;
}
.b4 ul {
  list-style: none;
  display: flex;
  gap: 25px;
}
.b6 {
  color: white;
  text-decoration: none;
  font-family: Arial, sans-serif;
  font-size: 18px;
  transition: color 0.3s;
}
.b6:hover {
  color: gold;
}
.b10 {
  padding: 5px 10px;
  border-radius: 4px;
  border: none;
}
.b11 {
  display: none;
  font-size: 24px;
  color: white;
  cursor: pointer;
}

/* Задание 2: Подменю */
.b7 {
  position: relative;
}
.b8 {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  width: 200px;
  list-style: none;
  padding: 10px 0;
  display: none;
}
.b7:hover .b8 {
  display: block;
}
.b9 {
  display: block;
  padding: 8px 20px;
  color: black;
  text-decoration: none;
  transition: background 0.2s;
}
.b9:hover {
  background: #f0f0f0;
}

/* Задание 3: Адаптивность */
@media (max-width: 768px) {
  .b1 { height: 60px; }
  .b3 { width: 60px; }
  .b4 ul { display: none; }
  .b10 { display: none; }
  .b11 { display: block; }
}

/* Задание 4: Форма поиска */
.b12 {
  padding: 30px 0;
  background: #f5f5f5;
}
.b13 {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  display: grid;
  gap: 15px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.b14, .b16 {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
}
.b15, .b17 {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.b18 {
  background: #007bff;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  grid-column: span 2;
}

/* Задание 5: Карточки */
.b19 {
  padding: 40px 0;
}
.b20 {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 25px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.b21 {
  width: 300px;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 15px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: relative;
  transition: transform 0.3s;
}
.b21:hover {
  transform: scale(1.03);
}
.b22 {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 4px;
}
.b23 {
  font-weight: bold;
  margin: 10px 0;
}
.b24 {
  color: gold;
  margin: 10px 0;
}
.b25, .b26 {
  width: 100%;
  padding: 8px;
  margin-top: 10px;
  border: none;
  border-radius: 4px;
}
.b25 {
  background: #28a745;
  color: white;
}
.b21:hover .b25 {
  background: #218838;
}
.b26 {
  display: none;
  background: #6c757d;
  color: white;
}
.b21:hover .b26 {
  display: block;
}

/* Задание 6: Футер */
.b27 {
  background: #333;
  color: white;
  padding: 40px 0 20px;
}
.b28 {
  display: flex;
  justify-content: space-around;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  flex-wrap: wrap;
  gap: 20px;
}
.b29 {
  flex: 1;
  min-width: 200px;
}
.b29 ul {
  list-style: none;
  margin-top: 10px;
}
.b29 a {
  color: #ccc;
  text-decoration: none;
}
.b29 a:hover {
  color: white;
}
.b30 {
  text-align: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #555;
}

/* Задание 7: Контакты */
.b31 {
  padding: 40px 0;
  max-width: 1000px;
  margin: 0 auto;
}
.b32 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 20px;
}
.b33 p {
  margin: 8px 0;
}
.b34 {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.b35 {
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

/* Задание 8: Галерея */
.b36 {
  padding: 40px 0;
}
.b37 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.b38 {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 4px;
  transition: transform 0.3s;
}
.b38:hover {
  transform: scale(1.05);
}

/* Задание 9: Корзина */
.b39 {
  padding: 40px 0;
  max-width: 1000px;
  margin: 0 auto;
}
.b40 {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}
.b40 th, .b40 td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}
.b41 {
  width: 50px;
  height: 50px;
  object-fit: cover;
  margin-right: 10px;
  vertical-align: middle;
}
.b42 {
  width: 60px;
  padding: 5px;
}
.b43 {
  background: #dc3545;
  color: white;
  border: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
}
.b44 {
  background: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
}
.b45 {
  padding: 8px;
  margin: 10px 0;
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
}

/* Задание 10: Личный кабинет */
.b46 {
  padding: 40px 0;
  max-width: 1200px;
  margin: 0 auto;
}
.b47 {
  display: flex;
  gap: 30px;
}
.b48 {
  width: 200px;
}
.b48 ul {
  list-style: none;
}
.b49 {
  display: block;
  padding: 10px;
  text-decoration: none;
  color: #333;
  border-left: 3px solid transparent;
}
.b49.active, .b49:hover {
  background: #e9ecef;
  border-left-color: #007bff;
}
.b50 {
  flex: 1;
}
.b51 {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

/* Адаптив футера */
@media (max-width: 768px) {
  .b28 {
    flex-direction: column;
  }
  .b32 {
    grid-template-columns: 1fr;
  }
  .b37 {
    grid-template-columns: repeat(2, 1fr);
  }
  .b47 {
    flex-direction: column;
  }
}