:root {
  --bg-color: #f4f7f6;
  --card-bg: #ffffff;
  --text-color: #333333;
  --primary-color: #4a90e2;
  --border-color: #dddddd;
  --heading-color: #2c3e50;
  --subtext-color: #666666;
  --transparent-bg: #eeeeee;
}

/* Dark Mode Variables Override */
body.dark-mode {
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --text-color: #e0e0e0;
  --primary-color: #357abd;
  --border-color: #333333;
  --heading-color: #ffffff;
  --subtext-color: #aaaaaa;
  --transparent-bg: #2a2a2a;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 20px;
  transition:
    background-color 0.3s,
    color 0.3s;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

header {
  margin-bottom: 30px;
}

.header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 5px;
}

header p {
  margin: 0;
  color: var(--subtext-color);
}

h1 {
  margin: 0;
  color: var(--heading-color);
}

h3 {
  color: var(--heading-color);
  margin-top: 0;
  margin-bottom: 15px;
}

.studio-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 20px;
}

@media (max-width: 768px) {
  .studio-layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  height: fit-content;
  transition:
    background 0.3s,
    box-shadow 0.3s;
}

.control-group {
  margin-bottom: 20px;
}

.control-group-row {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 14px;
}

input[type="range"] {
  width: 100%;
  margin-bottom: 5px;
}

.value-display {
  font-size: 12px;
  color: var(--subtext-color);
  text-align: right;
  display: block;
}

select,
input[type="file"] {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  box-sizing: border-box;
  background-color: var(--card-bg);
  color: var(--text-color);
  transition:
    border-color 0.3s,
    background-color 0.3s,
    color 0.3s;
}

.divider {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 20px 0;
}

.workspace {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.upload-zone {
  border: 2px dashed var(--primary-color);
  padding: 40px;
  text-align: center;
  border-radius: 8px;
  background: var(--card-bg);
  cursor: pointer;
  transition:
    background 0.3s,
    border-color 0.3s;
}

body.dark-mode .upload-zone:hover {
  background: #252525;
}

.upload-zone:hover {
  background: #edf4fe;
}

.support-text {
  font-size: 12px;
  color: var(--subtext-color);
}

.preview-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition:
    background 0.3s,
    box-shadow 0.3s;
}

@media (max-width: 600px) {
  .preview-container {
    grid-template-columns: 1fr;
  }
}

.preview-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.preview-box h3 {
  margin-top: 0;
  font-size: 16px;
  color: var(--subtext-color);
}

img,
canvas {
  max-width: 100%;
  max-height: 400px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  object-fit: contain;
  background: var(--transparent-bg);
  transition:
    border-color 0.3s,
    background-color 0.3s;
}

.meta-info {
  margin-top: 10px;
  font-size: 13px;
  font-weight: bold;
}

.btn {
  display: block;
  width: 100%;
  padding: 12px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-weight: bold;
  cursor: pointer;
  font-size: 16px;
  text-align: center;
  text-decoration: none;
  box-sizing: border-box;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #357abd;
}

body.dark-mode .btn:hover {
  background-color: #4a90e2;
}

.btn:disabled {
  background-color: #cccccc;
  cursor: not-allowed;
}

body.dark-mode .btn:disabled {
  background-color: #444444;
  color: #777777;
}

.btn-toggle {
  width: auto;
  padding: 8px 16px;
  font-size: 14px;
}

.btn-small {
  padding: 8px;
  font-size: 13px;
  flex: 1;
}

.hidden {
  display: none !important;
}