:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0AD260;
  --primary-hover: #08a850;
  --error: #dc2626;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  flex: 1;
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  padding: 32px 16px;
}

.brand {
  text-align: center;
  margin-bottom: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.card h1 {
  font-size: 1.25rem;
  margin: 0 0 8px;
  font-weight: 600;
}

.muted { color: var(--muted); margin: 0 0 16px; }
.small { font-size: 0.875rem; }

.hidden { display: none; }

label {
  display: block;
  font-weight: 500;
  font-size: 0.875rem;
  margin: 16px 0 6px;
}

input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  transition: border-color 0.15s;
}

input[type="password"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 210, 96, 0.12);
}

button {
  width: 100%;
  margin-top: 20px;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover { background: var(--primary-hover); }
button:disabled { background: #9ca3af; cursor: not-allowed; }

.error {
  color: var(--error);
  font-size: 0.875rem;
  margin: 12px 0 0;
}

.spinner {
  width: 32px;
  height: 32px;
  margin: 0 auto 16px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.footer {
  text-align: center;
  padding: 24px 16px;
}