:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1d2430;
  --muted: #687385;
  --border: #d7dde6;
  --accent: #1f5d8f;
  --accent-dark: #17486f;
  --danger: #a63a3a;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 "Segoe UI", Arial, sans-serif;
}

.login-page {
  background: #eef2f6;
}

.login-shell {
  align-items: center;
  display: flex;
  min-height: 100vh;
  padding: 24px;
}

.login-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
  margin: 0 auto;
  max-width: 420px;
  padding: 28px;
  width: 100%;
}

.login-head {
  align-items: flex-start;
  display: flex;
  gap: 18px;
  justify-content: space-between;
}

.login-head h1 {
  font-size: 24px;
  margin: 0;
}

.login-head p {
  color: var(--muted);
  margin: 6px 0 22px;
}

.login-logo {
  display: block;
  flex: 0 0 auto;
  height: 54px;
  margin-top: -3px;
  object-fit: contain;
  width: auto;
}

.login-form {
  display: grid;
  gap: 14px;
}

.login-form label {
  display: grid;
  font-weight: 700;
  gap: 6px;
}

.login-form input {
  border: 1px solid #b9c6d6;
  border-radius: 4px;
  padding: 10px 12px;
  font-size: 15px;
}

.login-form button {
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  padding: 10px 14px;
}

.login-form button:hover {
  background: var(--accent-dark);
}

.login-error {
  background: #f8eeee;
  border: 1px solid #d7b2b2;
  border-radius: 6px;
  color: var(--danger);
  margin-bottom: 16px;
  padding: 10px 12px;
}

.topbar {
  align-items: center;
  background: #182233;
  color: #fff;
  display: flex;
  justify-content: space-between;
  padding: 16px 28px;
}

.topbar strong {
  font-size: 22px;
}

.topbar a {
  color: #fff;
  text-decoration: none;
}