/* ===================================================================
   auth.css — DJI-SEI entry-screen design system
   All tokens sourced from style.css :root (shared DJI-SEI tokens).
   No legacy CSS vars, no hardcoded hex colors.
   =================================================================== */

html, body { margin: 0; padding: 0; height: 100%; }
html, body { overflow-x: hidden; overflow-y: auto; }

/* ---- Auth top bar (mini header on auth pages) ---- */
.auth-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 clamp(24px, 5vw, 74px);
  border-bottom: 1px solid var(--line);
  background: rgba(9, 12, 13, .94);
  backdrop-filter: blur(18px);
}
.auth-topbar .entry-brand {
  font-size: 15px;
}
.auth-topbar .entry-brand img {
  width: 32px;
  height: 32px;
}
.auth-topbar .entry-brand small,
.auth-topbar .entry-brand .brand-product {
  font-size: 7px;
}

/* ---- Entry screen (split-column layout) ---- */
.entry-screen {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(390px, 520px);
  align-items: center;
  gap: 8vw;
  padding: clamp(34px, 7vw, 110px);
  background:
    radial-gradient(circle at 72% 18%, rgba(179, 60, 80, .12), transparent 33%),
    linear-gradient(120deg, var(--canvas), var(--rail) 66%, var(--surface));
  position: relative;
}

/* ---- Eyebrow label (DJI-SEI kicker) ---- */
.eyebrow {
  display: block;
  color: var(--brand-bright);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: .2em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* ---- Entry brand (left panel) ---- */
.entry-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #f2f4f4;
  font-size: 19px;
  font-weight: 630;
  letter-spacing: .03em;
}
.entry-brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}
.entry-brand span {
  color: #f2f4f4;
}
.entry-brand small,
.entry-brand .brand-product {
  padding-left: 14px;
  border-left: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

/* ---- Auth panel (right form panel) ---- */
.auth-panel {
  width: 100%;
  max-width: 440px;
  justify-self: end;
  padding: 8px 0 12px 42px;
  border-left: 1px solid var(--line-strong);
}

/* Headings & text */
.auth-panel h1 {
  margin: 12px 0 10px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1;
  font-weight: 430;
  letter-spacing: -.045em;
  color: var(--soft);
}
.auth-panel p,
.auth-panel .auth-subtitle {
  max-width: 610px;
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}

/* ---- Form labels (DJI-SEI transparent bottom-border pattern) ---- */
.auth-panel .form-group,
.auth-panel .entry-field {
  display: block;
  margin-top: 21px;
}
.auth-panel .form-group label,
.auth-panel .entry-field label {
  display: block;
  margin-bottom: 7px;
  color: #929c9d;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.auth-panel .form-group label span,
.auth-panel .entry-field label span {
  display: block;
  color: #929c9d;
}

/* ---- Inputs: transparent bg, bottom border only ---- */
.auth-panel input,
.auth-panel select,
.auth-panel textarea,
.auth-panel .form-input {
  width: 100%;
  height: 44px;
  padding: 8px 4px;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  outline: none;
  color: var(--soft);
  background: transparent;
  font: 11px ui-monospace, SFMono-Regular, Menlo, monospace;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.auth-panel input::placeholder {
  color: var(--muted);
  opacity: .6;
}
.auth-panel input:focus,
.auth-panel select:focus,
.auth-panel textarea:focus,
.auth-panel .form-input:focus {
  border-color: var(--brand-bright);
  background: rgba(179, 60, 80, .035);
}
.auth-panel input[type="checkbox"],
.auth-panel input[type="radio"] {
  width: auto;
  height: auto;
  border: 1px solid var(--line-strong);
}

/* ---- MFA code input (large centered monospace) ---- */
.auth-panel .mfa-code-input {
  text-align: center;
  font-size: 24px;
  letter-spacing: 8px;
}

/* ---- Primary button: var(--brand) bg ---- */
.auth-panel .btn,
.auth-panel .btn-primary,
.auth-panel .primary-action,
.auth-panel button[type="submit"] {
  margin-top: 30px;
  min-width: 150px;
  width: 100%;
  padding: 12px 18px;
  border: 1px solid var(--brand);
  border-radius: 0;
  color: white;
  background: var(--brand);
  cursor: pointer;
  font-size: 10px;
  font-weight: 720;
  letter-spacing: .02em;
  text-transform: uppercase;
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.auth-panel .btn:hover,
.auth-panel .btn-primary:hover,
.auth-panel .primary-action:hover,
.auth-panel button[type="submit"]:hover {
  transform: translateY(-1px);
  border-color: var(--brand-bright);
  background: var(--brand-bright);
}

/* ---- Secondary button ---- */
.auth-panel .btn-secondary {
  margin-top: 30px;
  min-width: 150px;
  padding: 12px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  color: var(--soft);
  background: transparent;
  cursor: pointer;
  font-size: 10px;
  font-weight: 720;
  letter-spacing: .02em;
  text-transform: uppercase;
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.auth-panel .btn-secondary:hover {
  transform: translateY(-1px);
  border-color: var(--brand-bright);
  background: var(--brand-wash);
}

/* ---- Button row (form-actions) ---- */
.auth-panel .form-actions {
  display: flex;
  gap: 12px;
  margin-top: 30px;
}
.auth-panel .form-actions .btn,
.auth-panel .form-actions .btn-primary,
.auth-panel .form-actions .btn-secondary {
  margin-top: 0;
  flex: 1;
}

/* ---- Alerts ---- */
.auth-panel .alert {
  margin: 0 0 20px;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--danger);
  background: var(--surface);
  color: var(--soft);
  font-size: 11px;
  line-height: 1.55;
}
.auth-panel .alert-success {
  border-left-color: var(--success);
}
.auth-panel .alert-error {
  border-left-color: var(--danger);
}

/* Transient alert animation (moved from register.ejs inline <style>) */
.alert-transient {
  animation: alertFade 5s ease-in forwards;
}
@keyframes alertFade {
  0%, 70% { opacity: 1; }
  100% { opacity: 0; }
}

/* ---- Auth footer link ---- */
.auth-panel .auth-footer {
  margin-top: 28px;
  font-size: 11px;
  color: var(--muted);
}
.auth-panel .auth-footer a {
  color: var(--brand-bright);
  font-weight: 600;
  text-decoration: none;
}
.auth-panel .auth-footer a:hover {
  text-decoration: underline;
}

/* ---- Back link (MFA pages) ---- */
.auth-panel .auth-back {
  margin-top: 16px;
  text-align: center;
}
.auth-panel .auth-back a {
  color: var(--muted);
  font-size: 11px;
  text-decoration: none;
}
.auth-panel .auth-back a:hover {
  color: var(--brand-bright);
}

/* ---- Form hint text ---- */
.auth-panel .form-hint {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

/* ---- Form row (two-column inline) ---- */
.auth-panel .form-row {
  display: flex;
  gap: 16px;
}
.auth-panel .form-row .form-group {
  flex: 1;
}

/* ---- Registration step indicators ---- */
.auth-panel .reg-steps {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.auth-panel .reg-step {
  color: var(--muted);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.auth-panel .reg-step.active {
  color: var(--brand-bright);
}

/* ---- Choice cards (join/create) ---- */
.auth-panel .choice-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}
.auth-panel .choice-card {
  display: block;
  cursor: pointer;
}
.auth-panel .choice-card input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.auth-panel .choice-card-inner {
  display: block;
  padding: 16px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.auth-panel .choice-card-inner strong {
  display: block;
  color: var(--soft);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 4px;
}
.auth-panel .choice-card-inner small {
  display: block;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}
.auth-panel .choice-card input:checked + .choice-card-inner {
  border-color: var(--brand-bright);
  background: var(--brand-wash);
}

/* ---- MFA QR code ---- */
.auth-panel .mfa-qr {
  text-align: center;
  margin-bottom: 24px;
}
.auth-panel .mfa-qr img {
  border: 1px solid var(--line-strong);
  background: white;
  padding: 12px;
}

/* ---- Utility: hidden (replaces inline style="display:none") ---- */
.is-hidden {
  display: none;
}
.is-inline {
  display: inline;
}

/* ---- Wide card variant for multi-step forms ---- */
.auth-panel.auth-panel-wide {
  max-width: 560px;
}

/* ---- Responsive: stack on mobile ---- */
@media (max-width: 900px) {
  .entry-screen {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 24px;
  }
  .auth-panel {
    justify-self: stretch;
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--line-strong);
    padding-top: 32px;
  }
}
/* ---- Slide-to-center register animation ---- */
.auth-form-container {
  transition: all 0.6s var(--ease);
}

.entry-screen .entry-brand {
  transition: all 0.6s var(--ease);
}

/* When register mode active: brand panel slides out left, form slides to center */
.entry-brand.brand-slide-out {
  opacity: 0;
  transform: translateX(-40px);
  pointer-events: none;
}

.auth-form-container.form-slide-center {
  margin: 0 auto;
}

.entry-screen.register-mode {
  grid-template-columns: 0 1fr;
}

/* Smooth panel swap */
.auth-panel {
  animation: enter 0.4s var(--ease) both;
}

.auth-panel.is-hidden {
  display: none;
}

/* Hidden state */
.is-hidden {
  display: none;
}

/* ---- Login ↔ Register slide transition ---- */
.auth-panel,
.entry-brand {
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

/* Register mode: collapse grid to single centered column */
.entry-screen.register-mode {
  grid-template-columns: 1fr;
  justify-items: center;
  align-items: start;
  padding-top: clamp(20px, 4vh, 48px);
}

/* Register panel centered */
.auth-panel-register {
  max-width: 520px;
  justify-self: center;
  padding-left: 42px;
}

/* Hidden state */
.is-hidden {
  display: none !important;
}