:root {
  --theme-color: #1c1a99;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#json-container {
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#json-header {
  text-align: center;
  font-size: 24px;
  font-weight: bold;
  color: var(--theme-color);
}

/* Panels */
.panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.panel-label {
  font-size: 12px;
  font-weight: bold;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.panel-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#json-input {
  width: 100%;
  height: 200px;
  padding: 12px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  border: 1px solid #ccc;
  border-radius: 4px;
  resize: vertical;
  line-height: 1.5;
  tab-size: 2;
}

#json-input:focus {
  outline: none;
  border-color: var(--theme-color);
}

/* Toolbar */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 8px 16px;
  font-size: 14px;
  background-color: var(--theme-color);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-primary:hover {
  background-color: #0d0c5f;
}

.btn-secondary {
  padding: 8px 14px;
  font-size: 14px;
  background-color: #f4f4f4;
  color: #333;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-secondary:hover {
  background-color: #e0e0e0;
}

.btn-danger {
  padding: 8px 14px;
  font-size: 14px;
  background-color: #f4f4f4;
  color: #c0392b;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-danger:hover {
  background-color: #fde8e8;
  border-color: #c0392b;
}

.btn-icon {
  padding: 6px 12px;
  font-size: 13px;
  background-color: #f4f4f4;
  color: #333;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-icon:hover {
  background-color: #e0e0e0;
}

.output-actions {
  display: flex;
  gap: 6px;
}

.indent-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #555;
}

.indent-group select {
  padding: 6px 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 13px;
  background: #fff;
  cursor: pointer;
}

.indent-group select:focus {
  outline: none;
  border-color: var(--theme-color);
}

/* Status bar */
.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: bold;
}

.status-empty {
  background-color: #f4f4f4;
  color: #999;
}

.status-valid {
  background-color: #eafaf1;
  color: #1a7a43;
  border: 1px solid #a9dfbf;
}

.status-invalid {
  background-color: #fdf2f2;
  color: #c0392b;
  border: 1px solid #f5b7b1;
}

/* Output */
.output-panel #json-output {
  margin: 0;
  padding: 12px;
  background-color: #fafafa;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  line-height: 1.6;
  overflow: auto;
  max-height: 400px;
  white-space: pre;
  word-break: normal;
}

.placeholder {
  color: #bbb;
  font-style: italic;
}

/* Syntax highlight colors */
.json-key    { color: #7b5ea7; }
.json-string { color: #22863a; }
.json-number { color: #005cc5; }
.json-bool   { color: #e36209; }
.json-null   { color: #999999; }

/* Toast */
#toast {
  position: fixed;
  top: 40px;
  right: 40px;
  background-color: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 10px 20px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 100;
}

#theme-color-picker {
  position: absolute;
  top: 10px;
  right: 10px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 10px 0;
  background-color: var(--theme-color);
  color: #fff;
  font-size: 14px;
  margin-top: auto;
}

.footer a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

.footer a:hover {
  text-decoration: underline;
}

a.external::after {
  content: "↗";
  margin-left: 4px;
}

@media screen and (max-width: 768px) {
  #json-container {
    margin: 20px 10px;
    padding: 15px;
  }

  #json-header {
    font-size: 20px;
  }

  .toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn-danger {
    align-self: flex-end;
  }
}

@media screen and (max-width: 480px) {
  #json-container {
    margin: 10px 5px;
    padding: 10px;
    gap: 10px;
  }

  #json-header {
    font-size: 18px;
  }

  #json-input {
    height: 150px;
    font-size: 12px;
  }

  .btn-primary,
  .btn-secondary,
  .btn-danger {
    padding: 7px 10px;
    font-size: 13px;
  }

  .output-panel #json-output {
    font-size: 12px;
    max-height: 300px;
  }

  #toast {
    right: 10px;
    top: 10px;
    font-size: 13px;
  }

  .footer {
    font-size: 12px;
    padding: 8px 10px;
  }
}