:root {
  /* Backgrounds – Gitpub Brand Palette */
  --bg-app: #0F1115;
  --bg-panel: #171B21;
  --bg-panel-alt: #1E242C;
  --bg-panel-lift: #222931;
  --bg-hover: #252D38;

  /* Borders */
  --border: #2C3440;
  --border-subtle: #1F2730;

  /* Text */
  --text-main: #F3F2EE;
  --text-muted: #9CA6B5;

  /* Accent – Amber Ale */
  --accent: #E5A13E;
  --accent-strong: #C57B27;
  --accent-glow: rgba(229, 161, 62, 0.18);
  --accent-subtle: rgba(229, 161, 62, 0.09);

  /* Status */
  --success: #3FB950;
  --danger: #F85149;

  /* Shape */
  --radius-md: 7px;
  --radius-lg: 11px;
  --radius-window: 14px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
  --bg-app: #FDF8F0;
  --bg-panel: #FFFFFF;
  --bg-panel-alt: #F5EFE0;
  --bg-panel-lift: #FEFCF8;
  --bg-hover: #EDDFC8;
  --border: #D4C4A0;
  --border-subtle: #E8DFC8;
  --text-main: #1A120A;
  --text-muted: #6B5C40;
  --accent: #C57B27;
  --accent-strong: #A86020;
  --accent-glow: rgba(197, 123, 39, 0.18);
  --accent-subtle: rgba(197, 123, 39, 0.09);
  --success: #16a34a;
  --danger: #dc2626;
  --shadow: 0 8px 28px rgba(197, 123, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-panel-alt);
  color: var(--text-main);
  padding: 5px 12px;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, opacity 0.12s ease, box-shadow 0.12s ease;
  font-size: 13px;
}

button:hover {
  background: var(--bg-hover);
  border-color: #4a5e78;
}

button:disabled {
  opacity: 0.45;
  cursor: default;
}

button:disabled:hover {
  background: var(--bg-panel-alt);
  border-color: var(--border);
}

button.primary {
  background: linear-gradient(135deg, var(--accent-strong) 0%, var(--accent) 100%);
  border-color: transparent;
  color: #ffffff;
}

button.primary:hover {
  opacity: 0.88;
  border-color: transparent;
  box-shadow: 0 0 0 3px var(--accent-glow);
}

button.primary-blue {
  background: linear-gradient(135deg, var(--accent-strong) 0%, var(--accent) 100%);
  border-color: transparent;
  color: #ffffff;
}

button.primary-blue:hover {
  opacity: 0.88;
  border-color: transparent;
  box-shadow: 0 0 0 3px var(--accent-glow);
}

button.danger {
  border-color: rgba(248, 81, 73, 0.35);
  color: var(--danger);
  background: transparent;
}

button.danger:hover {
  background: rgba(248, 81, 73, 0.1);
  border-color: var(--danger);
}

input,
select,
textarea {
  width: 100%;
  padding: 5px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.28);
  color: var(--text-main);
  font-size: 13px;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea {
  min-height: 80px;
  resize: vertical;
}