.json-main {
  flex: 1;
  padding: 32px 20px 48px;
}

.json-wrap {
  max-width: 960px;
  margin: 0 auto;
}

.json-wrap > h1 {
  text-align: center;
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.json-lead {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 24px;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.json-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
  align-items: center;
}

.json-toolbar label.json-file-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--surface-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.json-file-label:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.json-file-label input {
  display: none;
}

.json-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
  justify-content: flex-end;
}

.json-btn {
  padding: 10px 16px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: white;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.json-btn:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.json-btn--ghost {
  background: var(--surface);
  color: var(--primary);
}

.json-btn--ghost:hover {
  background: var(--surface-hover);
}

.json-btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.json-feedback {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  border-radius: var(--radius);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 16px;
  border: 2px solid var(--border);
  box-shadow: var(--shadow-hover);
}

.json-feedback--hidden {
  display: none !important;
}

.json-feedback i {
  font-size: 1.5rem;
  margin-top: 2px;
  flex-shrink: 0;
}

.json-feedback-text {
  flex: 1;
  min-width: 0;
}

.json-feedback--ok {
  background: rgba(16, 185, 129, 0.14);
  border-color: var(--success);
  color: #065f46;
}

.json-feedback--ok i {
  color: var(--success);
}

.json-feedback--warn {
  background: rgba(245, 158, 11, 0.14);
  border-color: var(--warning);
  color: #92400e;
}

.json-feedback--warn i {
  color: var(--warning);
}

.json-feedback--error {
  background: rgba(239, 68, 68, 0.12);
  border-color: var(--error);
  color: #991b1b;
}

.json-feedback--error i {
  color: var(--error);
}

.json-feedback--neutral {
  background: var(--surface-hover);
  border-color: var(--border-light);
  color: var(--text-primary);
}

.json-feedback--neutral i {
  color: var(--primary);
}

@media (prefers-reduced-motion: no-preference) {
  .json-feedback:not(.json-feedback--hidden) {
    animation: json-feedback-in 0.4s ease;
  }
}

@keyframes json-feedback-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.json-field.json-field--flash-ok textarea {
  border-color: var(--success) !important;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.28);
}

.json-field.json-field--flash-warn textarea {
  border-color: var(--warning) !important;
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.28);
}

.json-field.json-field--flash-err textarea {
  border-color: var(--error) !important;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.26);
}

@media (prefers-reduced-motion: no-preference) {
  .json-field.json-field--flash-ok textarea,
  .json-field.json-field--flash-warn textarea,
  .json-field.json-field--flash-err textarea {
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
  }
}

.json-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 12px;
}

@media (max-width: 768px) {
  .json-main {
    padding: 24px 16px 40px;
  }

  .json-wrap > h1 {
    font-size: 1.5rem;
  }

  .json-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .json-toolbar .json-file-label {
    width: 100%;
    justify-content: center;
    padding: 12px 16px;
    box-sizing: border-box;
    touch-action: manipulation;
  }

  .json-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    gap: 10px;
    flex: none;
    justify-content: stretch;
  }

  .json-actions .json-btn {
    width: 100%;
    min-height: 48px;
    justify-content: center;
    font-size: 0.88rem;
    padding: 12px 10px;
    white-space: normal;
    text-align: center;
    line-height: 1.25;
    touch-action: manipulation;
  }

  .json-actions .json-btn:last-child {
    grid-column: 1 / -1;
  }

  .json-feedback {
    padding: 14px 16px;
    font-size: 1rem;
    gap: 12px;
  }

  .json-feedback i {
    font-size: 1.35rem;
  }

  .json-panels {
    grid-template-columns: 1fr;
  }

  .json-field textarea {
    min-height: 180px;
    font-size: 14px;
  }
}

@media (max-width: 380px) {
  .json-actions {
    grid-template-columns: 1fr;
  }

  .json-actions .json-btn:last-child {
    grid-column: auto;
  }
}

.json-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.json-field textarea {
  width: 100%;
  min-height: 220px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, monospace;
  font-size: 13px;
  line-height: 1.45;
  resize: vertical;
  background: var(--background);
  color: var(--text-primary);
}

.json-field textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-color: var(--primary);
}

body.json-formatter-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}