:root {
  --bg-app: #1c2128;
  --bg-panel: #22272e;
  --bg-panel-alt: #2a3038;
  --bg-hover: #2d3540;
  --border: #1e242b;
  --text-main: #cdd9e5;
  --text-muted: #768390;
  --accent: #58a6ff;
  --accent-strong: #1f6feb;
  --success: #3fb950;
  --danger: #f85149;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow: 0 8px 24px rgba(1, 4, 9, 0.7);
}

:root[data-theme="light"] {
  --bg-app: #f6f8fa;
  --bg-panel: #ffffff;
  --bg-panel-alt: #f0f3f6;
  --bg-hover: #eaeef2;
  --border: #d0d7de;
  --text-main: #24292f;
  --text-muted: #57606a;
  --accent: #0969da;
  --accent-strong: #0969da;
  --success: #1a7f37;
  --danger: #cf222e;
  --shadow: 0 8px 24px rgba(31, 35, 40, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-app);
  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 0.1s ease, border-color 0.1s ease, opacity 0.1s ease;
  font-size: 13px;
}

button:hover {
  background: var(--bg-hover);
  border-color: #6e7681;
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

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

button.primary {
  background: #238636;
  border-color: transparent;
  color: #ffffff;
}

button.primary:hover {
  background: #2ea043;
  border-color: transparent;
}

button.primary-blue {
  background: var(--accent-strong);
  border-color: transparent;
  color: #ffffff;
}

button.primary-blue:hover {
  background: #388bfd;
  border-color: transparent;
}

button.danger {
  border-color: rgba(248, 81, 73, 0.35);
  color: #f85149;
  background: transparent;
}

button.danger:hover {
  background: rgba(248, 81, 73, 0.1);
  border-color: #f85149;
}

input,
select,
textarea {
  width: 100%;
  padding: 5px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text-main);
  font-size: 13px;
  transition: border-color 0.1s ease, box-shadow 0.1s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.12);
}

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