/* ── Beta signup modal ───────────────────────────────────────────────────── */
.signup-overlay {
  position: fixed;
  inset: 0;
  background: var(--scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9100;
}
.signup-overlay[hidden] { display: none; }

.signup-modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 400px;
  max-width: calc(100vw - 2rem);
  box-shadow: 0 8px 32px var(--shadow-ring);
  overflow: hidden;
}

.signup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}

.signup-title {
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.signup-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: var(--fs-title-sm);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 3px;
  line-height: 1;
  transition: color 0.1s, background 0.1s;
}
.signup-close:hover { color: var(--text); background: var(--hover-overlay); }

.signup-body {
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: calc(90vh - 56px);
  overflow-y: auto;
}
.signup-body[hidden] { display: none; }

.signup-beta-notice {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.signup-beta-badge {
  font-family: var(--font-mono);
  font-size: var(--fs-secondary);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.signup-beta-notice p {
  font-size: var(--fs-subhead);
  color: var(--muted);
  line-height: 1.5;
}

.signup-input {
  width: 100%;
  padding: 0.5rem 0.6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 3px;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.1s;
}
.signup-input:focus { border-color: var(--accent2-border, var(--accent)); }

.signup-submit {
  width: 100%;
  padding: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  font-weight: 600;
  color: var(--bg);
  background: var(--accent);
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: opacity 0.1s;
}
.signup-submit:hover { opacity: 0.88; }
.signup-submit:disabled { opacity: 0.5; cursor: default; }

.signup-error {
  font-family: var(--font-mono);
  font-size: var(--fs-hint);
  color: var(--danger);
  min-height: 1em;
}

.signup-success {
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  text-align: center;
}
.signup-success[hidden] { display: none; }

.signup-success-icon {
  font-size: var(--fs-icon);
  color: var(--accent);
  line-height: 1;
}

.signup-success-title {
  font-family: var(--font-sans);
  font-size: var(--fs-prose);
  font-weight: 600;
  color: var(--text);
}

.signup-success-body {
  font-size: var(--fs-heading-sm);
  color: var(--muted);
  line-height: 1.55;
  max-width: 280px;
}

.signup-survey-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.1rem 0 0;
}

.signup-survey-heading {
  font-size: var(--fs-hint);
  color: var(--muted);
  opacity: 0.75;
  line-height: 1.4;
}

.signup-survey-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.signup-survey-label {
  font-family: var(--font-mono);
  font-size: var(--fs-hint);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.signup-select {
  width: 100%;
  padding: 0.5rem 0.6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 3px;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.1s;
  cursor: pointer;
}
.signup-select:focus { border-color: var(--accent2-border, var(--accent)); }

.signup-checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: var(--fs-subhead);
  color: var(--muted);
  user-select: none;
}
.signup-checkbox-row input[type="checkbox"] {
  accent-color: var(--accent2);
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  cursor: pointer;
}