:root {
  --bg: #f0f0f0;
  --text: #000000;
  --card: #ffffff;
  --border: #e6e6e6;
  --focus: #4a9e2b;
  --btn: #37b83b;
  --btn-hover: #45a049;
  color-scheme: light;
}

:root:has(.theme-toggle:checked) {
  --bg: #000000;
  --text: #f5f5f5;
  --card: #161616;
  --border: #2a2a2a;
  --focus: #4a9e2b;
  --btn: #37b83b;
  --btn-hover: #45a049;
  color-scheme: dark;
}

body,
label,
input,
select,
button,
legend {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  transition: background 0.25s ease, color 0.25s ease;
}

.wrap {
  max-width: 500px;
  margin: 32px auto 48px;
  padding: 0 16px;
}

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.page-head h1 {
  margin: 0;
  font-size: 35px;
}

.moon {
  display: inline-grid;
  place-items: center;
  width: 45px;
  height: 45px;
  font-size: 40px;
  background: transparent;
  border: none;
  box-shadow: none;
  cursor: pointer;
  transition: transform 0.3s;
}

.moon:hover {
  transform: scale(1.1);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
  transition: background 0.25s ease, border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.competition-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.competition-form label {
  color: var(--text);
}

.competition-form input[type='text'],
.competition-form input[type='email'],
.competition-form input[list],
.competition-form input[type='date'],
.competition-form input[type='number'] {
  block-size: 20px;
  padding: 10px 12px;
  /* outline: none; */
  cursor: pointer;
}
.competition-form select {
  block-size: 44px;
  padding: 10px 12px;
  /* outline: none; */
  cursor: pointer;
}

#city::placeholder {
  color: #8f98a1;
}

.competition-form input[type='color'] {
  block-size: 40px;
  padding: 0;
  border-radius: 2px;
  cursor: pointer;
  width: 100%;
}

.fieldset-form {
  margin-top: 6px;
  border-radius: 4px;
  padding: 12px 14px;
}

.fieldset-form legend {
  padding: 0 10px;
}

.form-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0 13px 0;
}

.form-line input[type='radio'] {
  accent-color: var(--focus);
}

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

.agree input[type='checkbox'] {
  inline-size: 16px;
  block-size: 16px;
  accent-color: var(--focus);
}

.btn-primary {
  margin-top: 6px;
  block-size: 45px;
  border: none;
  border-radius: 5px;
  background-color: var(--btn);
  color: var(--card);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease;
}
.btn-primary:hover {
  background-color: var(--btn-hover);
}

.back-link {
  margin-top: 20px;
  align-items: center;
  display: flex;
  justify-content: center;
}

.back-link a {
  color: #4da8ff;
  text-decoration: none;
  transition: color 0.3s;
}

.back-link a:hover {
  color: #ffcc00;
}