:root {
  color-scheme: light;
  --primary: #3333FF;
  --primary-light: #191980;
  --primary-dark: #030330;
  --accent-subtle: #D6D6FF;
  --bg: #FFFFFF;
  --muted: #EEF0F4;
  --border: #D8DCE4;
  --border-light: #E8ECF2;
  --text: #1A1A2E;
  --text-secondary: #5A6178;
  --text-muted: #9098A8;
  --error: #D94452;
  --success: #2E9E5A;
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --r-md: 8px; --r-lg: 12px; --r-full: 9999px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--muted); color: var(--text); min-height: 100vh; }
body {
  font-family: "Red Hat Display", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  width: 100%;
  max-width: 380px;
  background: var(--bg);
  border-radius: var(--r-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
}
.logo { display: flex; justify-content: center; margin-bottom: 24px; }
.logo svg { height: 24px; width: auto; }
h1 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  text-align: center;
  margin: 0 0 4px 0;
}
.subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  margin: 0 0 24px 0;
}
.form-row { margin-bottom: 14px; }
label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
input {
  appearance: none;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(51, 51, 255, 0.12);
}
.btn {
  appearance: none;
  width: 100%;
  border: none;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 16px;
  border-radius: var(--r-md);
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.15s ease;
}
.btn:hover { background: var(--primary-light); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text-secondary); }
.btn.btn-ghost:hover { background: var(--muted); color: var(--primary-dark); }
.error {
  display: none;
  background: #FDE6E9;
  color: #B33240;
  padding: 10px 12px;
  border-radius: var(--r-md);
  font-size: 12px;
  margin-bottom: 14px;
  border-left: 3px solid var(--error);
}
.error.visible { display: block; }
.hint {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 16px;
  line-height: 1.5;
}
.toggle-link {
  display: inline-block;
  font-size: 11px;
  color: var(--primary);
  cursor: pointer;
  text-decoration: underline;
}
.toggle-link:hover { color: var(--primary-light); }
.spinner {
  display: inline-block;
  width: 12px; height: 12px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  margin-right: 6px;
  animation: spin 0.7s linear infinite;
  vertical-align: -1px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.client-link {
  display: block;
  padding: 12px 14px;
  margin-bottom: 8px;
  background: var(--muted);
  border-radius: var(--r-md);
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 500;
  transition: background 0.15s;
}
.client-link:hover { background: var(--accent-subtle); }
.session-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--success);
  margin-bottom: 12px;
}
.session-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); }