:root {
  --bg-primary: #0e1621;
  --bg-secondary: #17212b;
  --bg-chat: #0e1621;
  --bg-sidebar: #17212b;
  --bg-header: #17212b;
  --bg-input: #242f3d;
  --bg-message-in: #182533;
  --bg-message-out: #2b5278;
  --bg-hover: #202b36;
  --bg-active: #2b5278;
  --bg-modal: #1e2c3a;

  --text-primary: #f5f5f5;
  --text-secondary: #8696a0;
  --text-muted: #5a6a78;
  --text-link: #6ab2f2;
  --text-time: #6d8396;

  --accent: #6ab2f2;
  --accent-hover: #7ec4ff;
  --green: #4fae4e;
  --red: #e53935;
  --orange: #f0883e;

  --border: #1f2f3d;
  --border-light: #2a3a4a;

  --sidebar-width: 300px;
  --header-height: 56px;
  --input-height: 56px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-round: 50%;

  --shadow: 0 2px 8px rgba(0,0,0,0.3);
  --transition: 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.4;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

input, button { font-family: inherit; }