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

body {
  margin: 16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #fafafa;
  color: #212121;
  line-height: 1.5;
}

/* ── Global inputs ──────────────────────────────────────── */
input[type='text'],
input[type='email'],
input[type='password'],
input[type='number'] {
  height: 40px;
  border: 1px solid #808080;
  border-radius: 4px;
  padding: 0 12px;
  font-size: 16px;
  font-family: inherit;
  outline: none;
  background: #fff;
}

input[type='text']:hover,
input[type='email']:hover,
input[type='password']:hover,
input[type='number']:hover {
  border-color: #000;
}

input[type='text']:focus,
input[type='email']:focus,
input[type='password']:focus,
input[type='number']:focus {
  border-color: #000;
}

/* ── Task 1 — category list ─────────────────────────────── */
#categories {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px;
  background: #fff;
  border-radius: 8px;
  max-width: 440px;
}

#categories .item {
  background: #f6f6fe;
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#categories .item h2 {
  font-size: 20px;
  font-weight: 700;
}

#categories .item > ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#categories .item > ul > li {
  height: 40px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  background: #fff;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  font-size: 14px;
}

/* ── Task 2 — gallery ───────────────────────────────────── */
.gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
}

.gallery li {
  flex: 0 0 calc(33.333% - 11px);
}

.gallery img {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 4px;
}

/* ── Task 3 — text field ────────────────────────────────── */
#name-input {
  display: block;
  width: 360px;
  margin-bottom: 16px;
}

/* ── Task 4 — login form ────────────────────────────────── */
.login-form {
  display: inline-flex;
  flex-direction: column;
  gap: 16px;
  background: #fff;
  padding: 24px;
  border-radius: 8px;
}

.login-form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 16px;
}

.login-form input {
  width: 360px;
}

.login-form button[type='submit'] {
  align-self: flex-start;
  height: 40px;
  background: #4e75ff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 16px;
  font-family: inherit;
}

.login-form button[type='submit']:hover {
  background: #6c8cff;
}

/* ── Task 5 — color widget ──────────────────────────────── */
.widget {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px 48px;
  background: #fff;
  border-radius: 8px;
}

.change-color {
  height: 40px;
  background: #4e75ff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 16px;
  font-family: inherit;
}

.change-color:hover {
  background: #6c8cff;
}

/* ── Task 6 — box script ────────────────────────────────── */
#controls {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  padding: 16px;
  border-radius: 8px 8px 0 0;
  border-bottom: 1px solid #e0e0e0;
}

#controls input[type='number'] {
  width: 80px;
}

[data-create] {
  height: 40px;
  background: #4e75ff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 16px;
  font-family: inherit;
}

[data-create]:hover {
  background: #6c8cff;
}

[data-destroy] {
  height: 40px;
  background: #ff4e4e;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 16px;
  font-family: inherit;
}

[data-destroy]:hover {
  background: #ff7070;
}

#boxes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-end;
  background: #fff;
  padding: 16px;
  min-height: 60px;
  border-radius: 0 0 8px 8px;
}