.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
.login-visual {
  display: none;
  background: var(--ink);
  color: var(--paper-soft);
  padding: 60px;
  position: relative;
  overflow: hidden;
}
.login-visual::after {
  content: "";
  position: absolute;
  right: -60px;
  top: 0;
  bottom: 0;
  width: 140px;
  background: repeating-linear-gradient(
    45deg,
    var(--stripe-red) 0px, var(--stripe-red) 14px,
    var(--paper-soft) 14px, var(--paper-soft) 28px,
    var(--brass) 28px, var(--brass) 42px
  );
  opacity: 0.9;
}
.login-visual h1 { color: #fff; font-size: 40px; max-width: 380px; }
.login-visual p { color: rgba(237,231,218,0.7); max-width: 340px; margin-top: 14px; }

.login-form-side {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 28px;
}
body[data-page="login"] .btn-back {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 100;
  margin-bottom: 0;
}

.role-selector {
  display: flex;
  gap: 6px;
  margin-bottom: 24px;
  background: var(--paper);
  border-radius: var(--radius);
  padding: 4px;
}
.role-btn {
  flex: 1;
  text-align: center;
  padding: 10px;
  border-radius: 4px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
  border: none;
  background: transparent;
  font-family: 'Work Sans', sans-serif;
  transition: background 0.15s ease, color 0.15s ease;
}
.role-btn:hover { color: var(--text); }
.role-btn.active { background: var(--ink); color: #fff; }

.login-tabs { display: flex; gap: 6px; margin-bottom: 24px; background: var(--paper); border-radius: var(--radius); padding: 4px; }
.login-tab {
  flex: 1;
  text-align: center;
  padding: 9px;
  border-radius: 4px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-muted);
  transition: background 0.15s ease, color 0.15s ease;
}
.login-tab:hover { color: var(--text); }
.login-tab.active { background: var(--ink); color: #fff; }

.demo-hint {
  background: var(--paper);
  border: 1px dashed var(--brass);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}
.demo-hint strong { color: var(--brass); }
.demo-hint code {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text);
  font-size: 12px;
}

@media (max-width: 900px) {
  .login-visual { display: none; }
}