:root {
  --qcp-classical-ink: #111827;
  --qcp-classical-muted: #6b7280;
  --qcp-classical-line: #dbe4ff;
  --qcp-classical-accent: #5146e5;
  --qcp-classical-action-shell: #1f2937;
}

body.qcp-classical-runtime-active {
  color: var(--qcp-classical-ink);
  background:
    radial-gradient(circle at 8% 4%, rgba(99, 102, 241, 0.12), transparent 28rem),
    #f3f6ff;
}

.qcp-classical-page,
.app-shell.app-shell--qcp-classical {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: calc(18px + var(--tg-content-safe-area-inset-top, 0px)) 16px
    calc(124px + max(env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px)));
}

.qcp-classical-surface {
  width: min(920px, 100%);
  min-width: 0;
  margin: 0 auto;
}

.qcp-classical-status {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 28px;
  border: 1px solid var(--qcp-classical-line);
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(43, 55, 110, 0.09);
  color: var(--qcp-classical-muted);
  text-align: center;
  font-weight: 750;
}

.qcp-classical-status.is-error {
  border-color: #fecaca;
  background: #fff7f7;
  color: #991b1b;
}

.app-shell--qcp-classical > .question-feedback-slot {
  width: min(920px, 100%);
  margin-right: auto;
  margin-left: auto;
}

.qcp-classical-actions {
  position: fixed;
  z-index: 30;
  left: 50%;
  bottom: max(14px, env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px));
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 52px;
  gap: 8px;
  width: min(700px, calc(100vw - 28px));
  padding: 9px;
  border-radius: 28px;
  background: var(--qcp-classical-action-shell);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.24);
  transform: translateX(-50%);
}

.qcp-classical-action-core {
  display: grid;
  grid-template-columns: minmax(68px, .7fr) minmax(130px, 1.6fr) minmax(68px, .7fr);
  gap: 8px;
}

.qcp-classical-action {
  min-height: 48px;
  border: 0;
  border-radius: 22px;
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.qcp-classical-action--side {
  background: #f3f4f6;
  color: var(--qcp-classical-ink);
  font-size: 26px;
  line-height: 1;
}

.qcp-classical-action--primary {
  background: var(--qcp-classical-accent);
  color: #fff;
}

.qcp-classical-action--primary.is-accepted { background: #166534; }

.qcp-classical-action--utility {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 24px;
}

.qcp-classical-action--utility.is-active {
  background: #fff;
  color: var(--qcp-classical-ink);
}

.qcp-classical-action:not(:disabled):hover,
.qcp-classical-action:not(:disabled):focus-visible {
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.34);
  outline: none;
}

.qcp-classical-action:disabled {
  cursor: not-allowed;
  opacity: .42;
}

.qcp-classical-backdrop {
  position: fixed;
  inset: 0;
  z-index: 31;
  border: 0;
  background: rgba(15, 23, 42, 0.28);
  backdrop-filter: blur(2px);
}

.qcp-classical-navigator {
  position: fixed;
  z-index: 32;
  left: 50%;
  bottom: calc(max(14px, env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px)) + 80px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: min(700px, calc(100vw - 28px));
  max-height: calc(100dvh - max(14px, env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px)) - 108px);
  padding: 18px;
  border: 1px solid rgba(129, 140, 248, 0.25);
  border-radius: 26px;
  background: rgba(31, 41, 55, 0.98);
  color: #fff;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.32);
  transform: translateX(-50%);
}

.qcp-classical-panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.qcp-classical-panel-head h2 {
  margin: 2px 0 0;
  font-size: 20px;
}

.qcp-classical-panel-kicker {
  color: rgba(255, 255, 255, 0.58);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.qcp-classical-panel-close {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font: inherit;
  font-size: 24px;
  cursor: pointer;
}

.qcp-classical-navigator-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 7px;
  min-height: 0;
  padding-right: 4px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.qcp-classical-navigator-number {
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.88);
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.qcp-classical-navigator-number:hover,
.qcp-classical-navigator-number:focus-visible {
  border-color: rgba(255, 255, 255, 0.72);
  outline: none;
}

.qcp-classical-navigator-number.is-answered {
  border-color: #86efac;
  color: #bbf7d0;
}

.qcp-classical-navigator-number.status-correct { border-color: #34d399; color: #bbf7d0; }
.qcp-classical-navigator-number.status-incorrect { border-color: #f87171; color: #fecaca; }
.qcp-classical-navigator-number.status-correct_after_incorrect,
.qcp-classical-navigator-number.status-pending_after_incorrect { border-color: #facc15; color: #fef3c7; }
.qcp-classical-navigator-number.status-pending { border-color: #60a5fa; color: #bfdbfe; }

.qcp-classical-navigator-number.is-current {
  border-color: #fff;
  background: #fff;
  color: var(--qcp-classical-ink);
}

.qcp-classical-navigator-footer {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 750;
}

.qcp-classical-finish {
  width: 100%;
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.qcp-classical-finish:disabled { cursor: not-allowed; opacity: .5; }

@media (max-width: 640px) {
  .qcp-classical-page,
  .app-shell.app-shell--qcp-classical {
    padding: calc(8px + var(--tg-content-safe-area-inset-top, 0px)) 8px
      calc(112px + max(env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px)));
  }

  .qcp-classical-actions {
    bottom: max(8px, env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px));
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    width: calc(100vw - 16px);
    gap: 6px;
  }

  .qcp-classical-action-core {
    grid-template-columns: 58px minmax(0, 1fr) 58px;
    gap: 6px;
  }

  .qcp-classical-action { min-height: 46px; }

  .qcp-classical-navigator {
    bottom: calc(max(8px, env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px)) + 78px);
    width: calc(100vw - 16px);
    max-height: calc(100dvh - max(8px, env(safe-area-inset-bottom), var(--tg-safe-area-inset-bottom, 0px)) - 94px);
    padding: 15px;
    border-radius: 24px;
  }

  .qcp-classical-navigator-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}