:root {
  --color-bg: #fdfaf5;
  --color-text: #2b2b2b;
  --color-primary: #3aa66f;
  --color-primary-dark: #2c8256;
  --color-border: #d9d2c4;
  --color-error: #c0392b;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
}

.app-shell {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px 16px 64px;
  min-height: 100vh;
}

h1 { font-size: 1.5rem; }

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
  margin-top: 12px;
}

input[type="email"],
input[type="password"],
input[type="text"] {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 1rem;
}

button {
  margin-top: 16px;
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 12px;
  background: var(--color-primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
}

button:hover { background: var(--color-primary-dark); }
button:disabled { opacity: 0.6; cursor: default; }

.error-message {
  color: var(--color-error);
  margin-top: 12px;
}

.muted { color: #6b6b6b; font-size: 0.9rem; }