:root {
  --color-primary: #0693e3;
  --color-primary-dark: #026198;
  --color-bg: #fdf6ff;
  --color-card: #ffffff;
  --color-text: #2b2540;
  --color-muted: #8a82a3;
  --color-border: #ece6ff;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: #ffffff;
  color: var(--color-text);
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.page__header {
  text-align: center;
  margin-bottom: 36px;
}

.page__header h1 {
  font-size: 2.2rem;
  margin: 0 0 8px;
}

.subtitle {
  color: var(--color-muted);
  margin: 0;
  font-size: 1.05rem;
}

.layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 28px;
  align-items: stretch;
}

.layout .card {
  height: 471px;
}

@media (max-width: 760px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .layout .card {
    height: auto;
  }
}

@media (max-width: 480px) {
  .page {
    padding: 28px 16px 40px;
  }

  .page__header {
    margin-bottom: 24px;
  }

  .page__header h1 {
    font-size: 1.6rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  .layout {
    gap: 18px;
  }

  .card {
    padding: 18px;
    border-radius: var(--radius-md);
  }

  .field-row {
    gap: 12px;
  }

  .actions {
    flex-direction: column;
  }

  .actions .btn {
    width: 100%;
  }
}

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.field-row .field {
  flex: 1;
  min-width: 140px;
}

.field-row .field--background {
  flex: 1.4;
}

label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
}

input[type="text"],
input[type="password"] {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s ease;
  width: 100%;
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--color-primary);
}

/* Prevent the browser's delayed autofill styling (applied ~0.5s after load)
   from altering the input's box size and causing a layout shift. */
input[type="text"]:-webkit-autofill,
input[type="password"]:-webkit-autofill,
input[type="text"]:-webkit-autofill:hover,
input[type="password"]:-webkit-autofill:hover {
  border: 2px solid var(--color-border);
  -webkit-text-fill-color: var(--color-text);
  transition: background-color 600000s ease-in-out 0s, border-color 0.15s ease;
}

input[type="text"]:-webkit-autofill:focus,
input[type="password"]:-webkit-autofill:focus {
  border: 2px solid var(--color-primary);
  -webkit-text-fill-color: var(--color-text);
  transition: background-color 600000s ease-in-out 0s, border-color 0.15s ease;
}

input[type="file"] {
  font-size: 0.9rem;
}

input[type="color"] {
  width: 56px;
  height: 40px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: none;
  padding: 0;
}

.password-field {
  position: relative;
  display: flex;
  align-items: center;
}

.password-field input {
  padding-right: 44px;
}

.icon-button {
  position: absolute;
  right: 6px;
  background: none;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 6px;
  line-height: 1;
}

.hint {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.toggle-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.toggle-option {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--color-muted);
  white-space: nowrap;
}

.toggle-option:has(input:checked) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: #f3f1ff;
}

.toggle-option input {
  accent-color: var(--color-primary);
}

.error {
  color: #d1345b;
  font-size: 0.85rem;
  margin: 0;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.btn {
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease, opacity 0.15s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn--primary {
  background: var(--color-primary);
  color: white;
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
}
  max-width: 100%;
  display: block;

.btn--secondary {
  background: #f3f1ff;
  color: var(--color-primary-dark);
}

.btn--secondary:hover:not(:disabled) {
  background: #e6e1ff;
}

.preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  height: 100%;
}

.preview__checkerboard {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background-image:
    linear-gradient(45deg, #eee 25%, transparent 25%),
    linear-gradient(-45deg, #eee 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #eee 75%),
    linear-gradient(-45deg, transparent 75%, #eee 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview__checkerboard canvas {
  width: 100%;
  height: 100%;
}

.preview__hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
  text-align: center;
}