:root {
  --bg: #f3f5f7;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0a6a4e;
  --primary-hover: #085840;
  --border: #d7dee6;
  --error-bg: #fee2e2;
  --error-text: #991b1b;
  --ok-bg: #dcfce7;
  --ok-text: #166534;
  --info-bg: #e0f2fe;
  --info-text: #075985;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  padding: 16px;
}

.card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 12px 30px rgba(2, 6, 23, 0.08);
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.subtitle {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.status {
  border-radius: 10px;
  padding: 12px;
  font-size: 14px;
  margin-bottom: 14px;
}

.status.info {
  background: var(--info-bg);
  color: var(--info-text);
}

.status.error {
  background: var(--error-bg);
  color: var(--error-text);
}

.status.ok {
  background: var(--ok-bg);
  color: var(--ok-text);
}

form {
  display: grid;
  gap: 10px;
}

label {
  font-size: 13px;
  color: var(--muted);
}

input {
  width: 100%;
  height: 46px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 0 12px;
  font-size: 15px;
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(10, 106, 78, 0.18);
}

button {
  margin-top: 4px;
  height: 46px;
  border: none;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: var(--primary-hover);
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.back-link {
  display: inline-block;
  margin-top: 14px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}

.hidden {
  display: none;
}