:root[data-theme="light"] {
  --color-bg: #fdfdfd;
  --color-text: #333;
  --color-primary: #0070f3;
  --color-secondary: #1a202c;
  --color-accent: #e1e1e1;
  --color-muted: #6b7280;
  --transition-fast: 0.25s ease-in-out;
}
:root[data-theme="dark"] {
  --color-bg: #000000;
  --color-text: #c0c5cb;
  --color-primary: #98a0a4;
  --color-secondary: #cbd5e0;
  --color-accent: #6b7180;
  --color-muted: #a0aec0;
  --transition-fast: 0.25s ease-in-out;
}

body {
  margin: 0;
  font-family: "Helvetica Neue", sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background-color: var(--color-bg);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem;
}
.navbar {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-accent);
  background-color: var(--color-bg);
  transition: background-color var(--transition-fast);
}
.navbar a {
  text-decoration: none;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}
.navbar a:hover {
  color: var(--color-secondary);
}
.hero {
  text-align: center;
  padding: 4rem 0;
  background-color: transparent;
  color: var(--color-text);
  transition: background-color var(--transition-fast);
}
.profile-picture {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 1.5rem auto;
  display: block;
  border: 3px solid var(--color-accent);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
  object-fit: cover;
}
.profile-picture:hover {
  transform: scale(1.05);
}
.hero pre {
  font-family: monospace;
  background-color: var(--color-accent);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
}
.section {
  padding: 2rem 0;
}
.section h1,
.section h2,
.section h3 {
  color: var(--color-secondary);
  transition: color var(--transition-fast);
}
.footer {
  text-align: center;
  padding: 2rem 0;
  font-size: 0.9rem;
  color: var(--color-muted);
  background-color: var(--color-bg);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

a {
  text-decoration: none;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
}

.social-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-left: auto;
}
.social-buttons img {
  width: 40px;
  height: 40px;
  transition: transform var(--transition-fast);
}
.social-buttons a:hover img {
  transform: scale(1.1);
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}
.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.theme-switch span {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--color-accent);
  transition: background-color var(--transition-fast);
  border-radius: 24px;
}
.theme-switch span:before {
  content: "";
  position: absolute;
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background-color: var(--color-bg);
  transition: transform var(--transition-fast);
  border-radius: 50%;
}
.theme-switch input:checked + span {
  background-color: var(--color-primary);
}
.theme-switch input:checked + span:before {
  transform: translateX(24px);
}

/* --- modern configurator UI --- */
.file-input {
  display: block;
  margin: 1rem 0;
}

.config-editor {
  width: 100%;
  border: 1px solid var(--color-muted);
  border-radius: 8px;
  padding: 1rem;
  font-family: monospace;
  font-size: 0.95rem;
  background-color: var(--color-bg);
  color: var(--color-text);
  resize: vertical;
}

.card {
  background-color: var(--color-accent);
  padding: 1rem;
  border-radius: 8px;
  margin: 1rem 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.settings-summary h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  color: var(--color-secondary);
}
.settings-summary .entry {
  background-color: var(--color-bg);
  padding: 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.settings-summary .entry:last-child {
  border-bottom: none;
}

.form-input {
  padding: 0.5rem;
  border: 1px solid var(--color-muted);
  border-radius: 4px;
  width: 100%;
}

.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color var(--transition-fast);
}

.btn.primary {
  background-color: var(--color-primary);
  color: var(--color-bg);
}
.btn.primary:hover {
  background-color: var(--color-secondary);
}

.btn.secondary {
  background-color: var(--color-secondary);
  color: var(--color-bg);
}
.btn.secondary:hover {
  background-color: var(--color-primary);
}

.customization-suite {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.customization-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-right: 1rem;
}
.customization-menu .menu-item {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-muted);
  padding: 0.5rem 1rem;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}
.customization-menu .menu-item.active {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}
.customization-menu .menu-item:hover {
  background-color: var(--color-secondary);
  color: var(--color-bg);
}
.customization-forms {
  flex: 1;
}
.form-panel {
  display: none;
}
.form-panel.active {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  align-items: center;
}

 /* width */
::-webkit-scrollbar {
  width: 20px;
}

/* Track */
::-webkit-scrollbar-track {
  box-shadow: inset 0 0 5px grey;
  border-radius: 10px;
}

/* Handle */
::-webkit-scrollbar-thumb {
  background: red;
  border-radius: 10px;
}

/* Project Buttons */
.project-buttons {
  display: flex;
  gap: 0.75rem;
  margin: 1rem 0;
  flex-wrap: wrap;
}

.project-button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  display: inline-block;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.project-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.chat-button {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.chat-button:hover {
  background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
}

.old-site-button {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
}

.old-site-button:hover {
  background: linear-gradient(135deg, #e681f0 0%, #f04759 100%);
}