/* ==========================================================================
   Eduroom — engagement: PWA, premium nudge, oyun, oflayn
   ========================================================================== */

/* --- PWA quraşdırma --- */
.pwa-install-bar {
  position: fixed;
  left: var(--space-sm);
  right: var(--space-sm);
  bottom: calc(var(--tabbar-height, 0px) + var(--safe-bottom, 0px) + var(--space-sm));
  z-index: 880;
  max-width: 520px;
  margin: 0 auto;
  animation: engagement-slide-up 0.4s ease;
}

@media (min-width: 992px) {
  .pwa-install-bar {
    bottom: calc(var(--space-md) + var(--safe-bottom, 0px));
    left: auto;
    right: var(--space-md);
    margin: 0;
  }
}

body.is-standalone .pwa-install-bar {
  display: none !important;
}

.pwa-install-bar-inner {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid rgba(0, 143, 84, 0.2);
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.14);
}

.pwa-install-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(0, 143, 84, 0.06);
  overflow: hidden;
}

.pwa-install-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pwa-install-copy {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pwa-install-copy strong {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--color-text);
}

.pwa-install-copy span {
  font-size: 11px;
  line-height: 1.35;
  color: var(--color-text-muted);
}

.pwa-install-btn {
  flex-shrink: 0;
  min-height: 36px;
  padding: 0 14px;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #fff;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: filter var(--transition-fast);
}

.pwa-install-btn:hover,
.pwa-install-btn:focus-visible {
  filter: brightness(1.06);
}

.pwa-install-dismiss {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
}

/* --- Premium nudge --- */
.premium-nudge {
  position: fixed;
  top: calc(var(--header-height, 64px) + var(--safe-top, 0px) + var(--space-sm));
  left: var(--space-sm);
  right: var(--space-sm);
  z-index: 870;
  max-width: 420px;
  margin: 0 auto;
  animation: engagement-slide-down 0.45s ease;
}

@media (min-width: 992px) {
  .premium-nudge {
    left: auto;
    right: var(--space-md);
    margin: 0;
  }
}

.premium-nudge-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #fff 0%, rgba(168, 137, 92, 0.08) 100%);
  border: 1px solid var(--premium-border-soft, rgba(168, 137, 92, 0.25));
  box-shadow: 0 10px 36px var(--premium-glow, rgba(168, 137, 92, 0.15));
}

.premium-nudge-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(168, 137, 92, 0.15);
  color: var(--premium-accent, #a8895c);
  font-size: 1rem;
  flex-shrink: 0;
}

.premium-nudge-copy {
  flex: 1;
  min-width: 180px;
}

.premium-nudge-copy strong {
  display: block;
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--premium-text, #5c4a32);
}

.premium-nudge-copy p {
  margin: 4px 0 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--color-text-muted);
}

.premium-nudge-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  width: 100%;
  padding-left: calc(40px + var(--space-sm));
}

@media (max-width: 479px) {
  .premium-nudge-actions {
    padding-left: 0;
  }
}

.premium-nudge-cta {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, #7a6344, #a8895c);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.premium-nudge-later {
  min-height: 34px;
  padding: 0 12px;
  border: none;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-muted);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.premium-nudge-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.85rem;
}

/* --- Oflayn toast --- */
.offline-toast {
  position: fixed;
  top: calc(var(--header-height, 64px) + var(--safe-top, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 860;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: calc(100% - 24px);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: #1a1f26;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  animation: engagement-slide-down 0.35s ease;
}

body.is-online .offline-toast {
  display: none !important;
}

/* --- Oyun modal (saytda açılır) --- */
.game-modal {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom));
}

.game-modal[hidden] {
  display: none !important;
}

.game-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.28s ease;
}

.game-modal.is-open .game-modal-backdrop {
  opacity: 1;
}

.game-modal-panel {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: min(100%, 440px);
  height: min(740px, calc(100dvh - 24px));
  max-height: calc(100dvh - 24px);
  margin: 0;
  border-radius: 20px;
  background: #dae8f1;
  box-shadow:
    0 24px 64px rgba(15, 23, 42, 0.22),
    0 0 0 1px rgba(255, 255, 255, 0.35) inset;
  overflow: hidden;
  opacity: 0;
  transform: translateY(12px) scale(0.97);
  transition:
    opacity 0.3s ease,
    transform 0.34s cubic-bezier(0.34, 1.25, 0.64, 1);
}

.game-modal.is-open .game-modal-panel {
  opacity: 1;
  transform: none;
}

.game-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: 56px;
  padding: 10px 14px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.game-modal-heading {
  min-width: 0;
}

.game-modal-title {
  margin: 0;
  font-size: var(--font-base);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.game-modal-subtitle {
  margin: 2px 0 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.game-modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: 1rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.game-modal-close:hover {
  background: rgba(220, 38, 38, 0.1);
  color: #dc2626;
}

.game-modal-close:active {
  transform: scale(0.94);
}

.game-modal-body {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.game-modal-loading {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #dae8f1;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.game-modal-loading.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.game-modal-loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(0, 143, 84, 0.15);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: gameModalSpin 0.7s linear infinite;
}

@keyframes gameModalSpin {
  to { transform: rotate(360deg); }
}

.game-modal-frame {
  display: block;
  width: 100%;
  flex: 1;
  min-height: 0;
  height: 100%;
  border: none;
  background: #dae8f1;
  overflow: hidden;
}

body.game-modal-open {
  overflow: hidden;
}

body.game-modal-open .mobile-tabbar {
  display: none !important;
}

@media (max-width: 991px) {
  .game-modal {
    align-items: stretch;
    padding: 0;
  }

  .game-modal-backdrop {
    background: #dae8f1;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .game-modal-panel {
    width: 100%;
    height: 100%;
    max-height: none;
    min-height: 100dvh;
    border-radius: 0;
    box-shadow: none;
    transform: translateY(100%);
  }

  .game-modal.is-open .game-modal-panel {
    transform: none;
  }

  .game-modal-header {
    min-height: 48px;
    padding: calc(8px + env(safe-area-inset-top, 0px)) var(--space-sm) var(--space-sm);
  }

  .game-modal-subtitle {
    display: none;
  }

  .game-modal-title {
    font-size: var(--font-sm);
  }
}

@media (prefers-reduced-motion: reduce) {
  .game-modal-panel,
  .game-modal-backdrop,
  .game-modal-loading-spinner {
    transition: none !important;
    animation: none !important;
  }

  .game-modal-panel {
    opacity: 1;
    transform: none;
  }
}

/* --- Oyun səhifəsi --- */
.game-page {
  max-width: 640px;
  margin: 0 auto;
}

.game-hero {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  margin-bottom: var(--space-md);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(0, 143, 84, 0.08) 0%, var(--color-surface) 60%);
  border: 1px solid rgba(0, 143, 84, 0.12);
}

.game-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-sm);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0, 143, 84, 0.12);
  color: var(--color-primary-dark);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.game-hero h1 {
  margin: 0 0 8px;
  font-size: var(--font-xl);
  letter-spacing: -0.02em;
}

.game-hero p {
  margin: 0;
  font-size: var(--font-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}

.game-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.game-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.game-stat strong {
  font-size: var(--font-lg);
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1;
}

.game-stat span {
  font-size: 10px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.game-subjects {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.game-subject-btn {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.game-subject-btn.is-active,
.game-subject-btn:hover {
  background: rgba(0, 143, 84, 0.1);
  border-color: rgba(0, 143, 84, 0.3);
  color: var(--color-primary-dark);
}

.game-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.game-progress {
  height: 4px;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  overflow: hidden;
}

.game-progress-fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transition: width 0.35s ease;
}

.game-question-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.game-question-text {
  margin: 0 0 var(--space-md);
  font-size: var(--font-md);
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-text);
}

.game-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
}

.game-option-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  min-height: 48px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-size: var(--font-sm);
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.game-option-btn:hover:not(:disabled) {
  border-color: rgba(0, 143, 84, 0.35);
  background: rgba(0, 143, 84, 0.04);
}

.game-option-btn:disabled {
  cursor: default;
}

.game-option-btn.is-correct {
  border-color: #15803d;
  background: rgba(21, 128, 61, 0.1);
  color: #15803d;
}

.game-option-btn.is-wrong {
  border-color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
  color: #dc2626;
}

.game-option-key {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--color-bg);
  font-size: 12px;
  font-weight: 800;
  color: var(--color-primary-dark);
}

.game-feedback {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 600;
  text-align: center;
  min-height: 20px;
}

.game-feedback.is-success { color: #15803d; background: rgba(21, 128, 61, 0.08); }
.game-feedback.is-error { color: #dc2626; background: rgba(220, 38, 38, 0.08); }

.game-footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-lg);
}

.game-footer a,
.game-footer button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 var(--space-md);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.game-footer .game-btn-primary {
  border: none;
  background: var(--color-primary);
  color: #fff;
}

.game-footer .game-btn-ghost {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
}

.game-result {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.game-result-icon {
  font-size: 3rem;
  margin-bottom: var(--space-sm);
}

.game-result h2 {
  margin: 0 0 var(--space-sm);
}

.game-result p {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
}

@keyframes engagement-slide-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes engagement-slide-down {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .pwa-install-bar,
  .premium-nudge,
  .offline-toast {
    animation: none;
  }
}