:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --background: #f4f7fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #64748b;
  --border: #e2e8f0;
  --success: #15803d;
  --danger: #dc2626;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--background);
  color: var(--text);
}

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

button {
  cursor: pointer;
}

.app-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
}

.primary-button {
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  background: var(--primary);
  color: white;
  font-weight: 600;
}

.primary-button:hover {
  background: var(--primary-dark);
}

input,
select,
textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: white;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}

.form-group {
  margin-bottom: 16px;
}

.hidden {
  display: none !important;
}

@media (max-width: 600px) {
  .app-container {
    padding: 12px;
  }

  .card {
    padding: 16px;
  }
}