:root {
  color-scheme: light;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #cbd5e1;
  --primary: #0f766e;
  --primary-hover: #115e59;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top right, #dbeafe 0%, var(--bg) 45%);
  min-height: 100vh;
}

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

.login-card {
  width: min(100%, 390px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
  padding: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(160deg, #2dd4bf, #0f766e);
}

.brand-name {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.2px;
}

h1 {
  margin: 8px 0 4px;
  font-size: 1.45rem;
}

.subtitle {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.login-form {
  display: grid;
  gap: 10px;
}

label {
  font-size: 0.9rem;
  font-weight: 600;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 0.95rem;
  transition: border-color 120ms ease;
}

input:focus {
  outline: none;
  border-color: var(--primary);
}

button {
  margin-top: 8px;
  border: 0;
  border-radius: 10px;
  padding: 11px 14px;
  background: var(--primary);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 120ms ease;
}

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

.footnote {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.form-alert {
  margin: 12px 0 0;
  min-height: 1.2rem;
  color: #b91c1c;
  font-size: 0.88rem;
  font-weight: 600;
  visibility: hidden;
}

.form-alert.is-visible {
  visibility: visible;
}