:root {
  --bg: #f4f7fb;
  --card-bg: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --primary: #005a9c;
  --primary-hover: #00497e;
  --danger: #b91c1c;
  --success: #047857;
  --border: #dbe4ef;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, #e6eef8 0%, transparent 45%),
    radial-gradient(circle at 80% 0%, #edf4fb 0%, transparent 35%),
    var(--bg);
  min-height: 100vh;
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 460px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  padding: 28px;
}

h1 {
  margin: 0 0 20px;
  font-size: 1.55rem;
}

form {
  display: grid;
  gap: 12px;
}

label {
  font-size: 0.95rem;
  color: var(--muted);
}

input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}

input:focus {
  outline: 2px solid #bfdbfe;
  border-color: #93c5fd;
}

.captcha-wrap {
  margin-top: 8px;
}

button {
  margin-top: 8px;
  border: none;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

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

button:disabled {
  opacity: 0.7;
  cursor: wait;
}

.loader {
  margin-top: 14px;
  color: var(--muted);
}

.hidden {
  display: none;
}

.message {
  margin-top: 14px;
  font-weight: 600;
}

.message.error {
  color: var(--danger);
}

.message.success {
  color: var(--success);
}

@media (max-width: 540px) {
  .card {
    padding: 20px;
  }

  h1 {
    font-size: 1.35rem;
  }
}