:root {
  --auth-radius: 10px;
  --auth-shell-radius: 24px;
  --auth-surface: #ffffff;
  --auth-surface-soft: #f5fafc;
  --auth-border: #d7e4eb;
  --auth-ink: #17384a;
  --auth-subtle: #617988;
  --auth-accent: #1f7a62;
  --auth-danger: #b65353;
}

.bf-nav-link {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  color: rgba(237, 244, 255, 0.74);
  font-size: 0.96rem;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.bf-nav-link:hover {
  color: #fff;
}

.app-auth-shell {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.app-auth-shell.is-hidden {
  display: none;
}

.app-auth-btn {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--auth-border);
  border-radius: var(--auth-radius);
  background: #ffffff;
  color: var(--auth-ink);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.app-auth-btn:hover {
  background: #eef6fa;
  border-color: #b6d0dc;
}

.app-auth-btn-danger {
  color: var(--auth-danger);
  border-color: #edcfcd;
  background: #fff7f6;
}

.app-auth-btn-danger:hover {
  background: #fff0ee;
  border-color: #e2b3af;
}

.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 11000;
  display: none;
}

.auth-modal.show {
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-overlay {
  position: absolute;
  inset: 0;
  background: rgba(3, 15, 25, 0.58);
  backdrop-filter: blur(10px);
}

.auth-dialog {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100vw - 48px));
  margin: 0;
  border-radius: var(--auth-shell-radius);
  overflow: hidden;
  background: linear-gradient(180deg, #fbfeff 0%, #f4fafc 100%);
  box-shadow: 0 32px 80px rgba(9, 24, 37, 0.24);
  max-height: calc(100vh - 48px);
}

.auth-close {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  border-radius: var(--auth-radius);
}

.auth-grid {
  display: grid;
  grid-template-columns: minmax(380px, 1.04fr) minmax(420px, 0.96fr);
  min-height: 680px;
}

.auth-brand-panel {
  padding: 48px 40px;
  color: #eef7ff;
  background:
    radial-gradient(circle at top left, rgba(101, 168, 255, 0.26), transparent 34%),
    radial-gradient(circle at bottom right, rgba(40, 191, 136, 0.18), transparent 28%),
    linear-gradient(180deg, #081420 0%, #0c1f31 100%);
}

.auth-brand-logo {
  width: 74px;
  height: 74px;
  object-fit: contain;
}

#auth-brand-profile-view[hidden],
#auth-brand-guest-view[hidden] {
  display: none;
}

.auth-brand-kicker {
  margin: 18px 0 10px;
  color: #8fc5ff;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.auth-brand-panel h2 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 18ch;
}

.auth-brand-desc {
  margin: 18px 0 0;
  color: rgba(235, 244, 255, 0.8);
  font-size: 1rem;
  line-height: 1.75;
}

.auth-brand-card {
  margin-top: 28px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--auth-radius);
  background: rgba(255, 255, 255, 0.06);
}

.auth-brand-card strong {
  display: block;
  margin-bottom: 8px;
  color: #ffffff;
  font-size: 0.98rem;
}

.auth-brand-card p {
  margin: 0;
  color: rgba(235, 244, 255, 0.78);
  line-height: 1.7;
}

.auth-feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.auth-feature-item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
  color: rgba(235, 244, 255, 0.82);
  line-height: 1.65;
}

.auth-feature-icon {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border-radius: 999px;
  border: 1px solid rgba(66, 185, 131, 0.42);
  background: rgba(38, 165, 109, 0.18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.auth-feature-icon::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  width: 5px;
  height: 9px;
  border-right: 2px solid #8df0bd;
  border-bottom: 2px solid #8df0bd;
  transform: rotate(40deg);
}

.auth-account-name {
  margin: 0;
  color: #ffffff;
  font-size: clamp(2rem, 3vw, 2.6rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.auth-account-card {
  margin-top: 24px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--auth-radius);
  background: rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 14px;
}

.auth-account-row {
  display: grid;
  gap: 4px;
}

.auth-account-row span {
  color: rgba(143, 197, 255, 0.86);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.auth-account-row strong {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  word-break: break-word;
}

.auth-brand-card-profile {
  margin-top: 18px;
}

.auth-content-panel {
  padding: 40px 36px 36px;
  background: linear-gradient(180deg, #ffffff 0%, #f6fbfd 100%);
}

.auth-alert {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: var(--auth-radius);
  border: 1px solid #ebd1a8;
  background: #fff8e9;
  color: #8f6220;
  font-size: 13px;
  line-height: 1.55;
}

.auth-alert.is-error {
  border-color: #efc9c5;
  background: #fff4f2;
  color: #aa4c45;
}

.auth-alert.is-success {
  border-color: #bddfcf;
  background: #effaf5;
  color: #1d6c55;
}

.auth-mode-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--auth-border);
  border-radius: var(--auth-radius);
  background: #eef5f8;
}

.auth-mode-btn {
  min-height: 42px;
  padding: 0 18px;
  border: 0;
  border-radius: var(--auth-radius);
  background: transparent;
  color: #587180;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.auth-mode-btn.active {
  background: #ffffff;
  color: var(--auth-ink);
  box-shadow: 0 8px 20px rgba(14, 33, 47, 0.08);
}

.auth-mode-panel {
  display: none;
  margin-top: 22px;
}

.auth-mode-panel.active {
  display: block;
}

.auth-panel-head {
  margin-bottom: 18px;
}

.auth-panel-head h3 {
  margin: 0;
  color: var(--auth-ink);
  font-size: 1.55rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.auth-panel-head p {
  margin: 10px 0 0;
  color: var(--auth-subtle);
  line-height: 1.7;
}

.auth-required {
  color: #b65353;
}

.auth-google-block {
  margin-top: 4px;
}

.auth-google-block[hidden] {
  display: none;
}

.auth-google-block[hidden] + .auth-divider {
  display: none;
}

.google-auth-slot {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
}

.google-auth-slot > div {
  display: flex;
  justify-content: center;
  width: 100%;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 22px 0 20px;
  color: #7690a0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--auth-border);
}

.auth-form {
  display: grid;
  gap: 16px;
}

.auth-field {
  display: grid;
  gap: 8px;
}

.auth-field span {
  color: var(--auth-ink);
  font-size: 13px;
  font-weight: 700;
}

.auth-field input,
.auth-field select {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--auth-border);
  border-radius: var(--auth-radius);
  background: #ffffff;
  color: var(--auth-ink);
  font-family: inherit;
  font-size: 14px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.auth-field select.is-placeholder {
  color: var(--auth-subtle);
}

.auth-field select option {
  color: var(--auth-ink);
  background: #ffffff;
}

.auth-field select option:hover,
.auth-field select option:checked,
.auth-field select option:focus {
  background: #eef3f6;
  color: var(--auth-ink);
  box-shadow: 0 0 0 100vmax #eef3f6 inset;
}

.auth-field input:focus,
.auth-field select:focus {
  outline: none;
  border-color: #5f98b2;
  box-shadow: 0 0 0 4px rgba(95, 152, 178, 0.12);
}

.auth-field-note {
  margin: 4px 0 0;
  color: var(--auth-subtle);
  font-size: 12px;
  line-height: 1.6;
}

.auth-submit-btn,
.auth-secondary-btn {
  min-height: 48px;
  border: 0;
  border-radius: var(--auth-radius);
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.auth-submit-btn {
  color: #ffffff;
  background: linear-gradient(180deg, #1f7b63 0%, #175d4c 100%);
  box-shadow: 0 14px 26px rgba(31, 123, 99, 0.18);
}

.auth-submit-btn:hover,
.auth-secondary-btn:hover {
  transform: translateY(-1px);
}

.auth-submit-btn[disabled],
.auth-secondary-btn[disabled] {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

.auth-secondary-btn {
  padding: 0 18px;
  border: 1px solid var(--auth-border);
  background: #ffffff;
  color: var(--auth-ink);
}

.auth-profile-head {
  margin-bottom: 18px;
}

.auth-profile-kicker {
  margin: 0 0 8px;
  color: #6a8797;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.auth-profile-head h3 {
  margin: 0;
  color: var(--auth-ink);
  font-size: 1.7rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.auth-profile-head p {
  margin: 10px 0 0;
  color: var(--auth-subtle);
  line-height: 1.7;
}

.auth-profile-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

@media (max-width: 960px) {
  .auth-dialog {
    width: min(720px, calc(100vw - 24px));
    max-height: calc(100vh - 24px);
  }

  .auth-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .auth-brand-panel,
  .auth-content-panel {
    padding: 28px 24px;
  }
}

@media (max-width: 720px) {
  .auth-modal.show {
    padding: 8px;
  }

  .app-header-links {
    width: 100%;
  }

  .app-auth-shell {
    width: 100%;
    flex-wrap: wrap;
  }

  .app-auth-btn {
    flex: 1 1 0;
  }

  .auth-dialog {
    width: calc(100vw - 16px);
    max-height: calc(100vh - 16px);
  }

  .auth-brand-panel,
  .auth-content-panel {
    padding: 24px 18px;
  }

  .auth-mode-switch {
    width: 100%;
  }

  .auth-profile-actions {
    flex-direction: column;
  }
}