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

:root {
  --bg:       #f1f5f9;
  --surface:  #ffffff;
  --border:   #e2e8f0;
  --primary:  #1e4fa8;
  --primary-h:#163d86;
  --text:     #1e293b;
  --muted:    #64748b;
  --success:  #059669;
  --warning:  #d97706;
  --error:    #dc2626;
  --radius:   8px;
  --shadow:   0 1px 3px rgba(0,0,0,.08);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
}

body { min-height: 100vh; }

button {
  cursor: pointer;
  font: inherit;
  border: none;
  border-radius: var(--radius);
  padding: 8px 18px;
  transition: background .15s;
}

input, textarea, select {
  font: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  outline: none;
  width: 100%;
  background: var(--surface);
  color: var(--text);
}
input:focus, textarea:focus { border-color: var(--primary); }

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