/* ─── AUTH SCREEN ────────────────────────────────────────────── */
.auth-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  z-index: 2000;
}

.auth-card {
  width: 100%;
  max-width: 360px;
  padding: 40px 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.auth-logo {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  letter-spacing: -0.4px;
  margin-bottom: 4px;
}

.auth-tagline {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-bottom: 16px;
}

.auth-error {
  font-size: var(--text-sm);
  color: var(--error);
  background: rgba(240, 80, 80, 0.1);
  border: 1px solid rgba(240, 80, 80, 0.2);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 8px;
}

.auth-error.hidden {
  display: none;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 8px;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.auth-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-input {
  height: 40px;
  padding: 0 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  outline: none;
  transition: border-color var(--transition-fast);
}

.auth-input:focus {
  border-color: var(--accent);
}

.auth-input::placeholder {
  color: var(--text-disabled);
}

.auth-btn {
  height: 42px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: background var(--transition-fast), opacity var(--transition-fast);
  margin-top: 4px;
}

.auth-btn:hover {
  background: var(--accent-hover);
}

.auth-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ─── HIDDEN UTILITY ─────────────────────────────────────────── */
.hidden {
  display: none !important;
}