:root {
  --navy-900: #0a1628;
  --navy-700: #173657;
  --navy-600: #1f4670;
  --noble-blue: #005eb8;
  --grey-100: #f1f5f9;
  --grey-200: #e2e8f0;
  --grey-500: #64748b;
  --grey-700: #334155;
  --accent: #d62828;
  --shadow: 0 8px 24px rgba(10, 22, 40, 0.08);
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--navy-900);
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
  min-height: 100vh;
}

.shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--navy-900);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.5px;
}

.brand h1 {
  margin: 0;
  font-size: 22px;
  line-height: 1.2;
}

.brand p {
  margin: 2px 0 0;
  color: var(--grey-500);
  font-size: 13px;
}

.card {
  background: #fff;
  border: 1px solid var(--grey-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.card .sub {
  margin: 0 0 22px;
  color: var(--grey-500);
  font-size: 14px;
  line-height: 1.5;
}

.field { margin-bottom: 16px; }

label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--grey-700);
  margin-bottom: 6px;
}

input[type="email"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--grey-200);
  border-radius: 8px;
  font-size: 15px;
  box-sizing: border-box;
}

.password-wrap {
  position: relative;
  display: block;
  width: 100%;
}

.password-wrap input {
  width: 100%;
  box-sizing: border-box;
  min-height: 43px;
  padding: 12px 3.75rem 12px 14px;
  border: 1px solid var(--grey-200);
  border-radius: 8px;
  font-size: 15px;
  line-height: 1.25;
  display: block;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);
  min-width: 2.75rem;
  border: none;
  background: transparent;
  color: var(--grey-500);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  text-align: center;
}

.password-toggle:hover {
  color: var(--navy-900);
  background: var(--grey-100);
}

.password-toggle:focus {
  outline: 2px solid rgba(0, 94, 184, 0.25);
}

input:focus {
  outline: 2px solid rgba(0, 94, 184, 0.25);
  border-color: var(--noble-blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 8px;
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--navy-900);
  color: #fff;
}

.btn-primary:hover { background: var(--navy-700); }

.btn-secondary {
  background: var(--grey-100);
  color: var(--navy-900);
  border: 1px solid var(--grey-200);
}

.alert {
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 16px;
}

.alert-error {
  background: #fdecec;
  border: 1px solid #f5c2c2;
  color: #8f1d1d;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.user-chip {
  font-size: 13px;
  color: var(--grey-700);
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.demo-tile {
  border: 1px solid var(--grey-200);
  border-radius: 10px;
  padding: 18px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.demo-tile h3 {
  margin: 0;
  font-size: 16px;
}

.demo-tile p {
  margin: 0;
  color: var(--grey-500);
  font-size: 13px;
  line-height: 1.45;
  flex: 1;
}

.footer-note {
  margin-top: 24px;
  font-size: 12px;
  color: var(--grey-500);
  line-height: 1.5;
}

@media (max-width: 640px) {
  .shell { padding-top: 28px; }
  .topbar { flex-direction: column; align-items: flex-start; }
}