/* ==========================================================================
   Презентація-розвага «WTF» — Фото 100% по центру екрана + Панель притиснута справа
   ========================================================================== */

:root {
  /* Soft Pastel Palette */
  --bg-main: #f4f6fb;
  --bg-surface: #ffffff;
  --border-color: #e2e8f0;
  --border-img: #cbd5e1;

  --text-primary: #1e293b;
  --text-secondary: #64748b;

  --accent-blue: #4f46e5;
  --accent-blue-hover: #4338ca;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Mono', 'Fira Code', 'JetBrains Mono', monospace;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
}

/* Top Header Bar */
.app-header {
  height: 76px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-surface);
  border-bottom: 2px solid var(--border-color);
  flex-shrink: 0;
}

.logo-title {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.header-center {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: 480px;
}

.slide-badge {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-secondary);
  white-space: nowrap;
}

.progress-track {
  flex: 1;
  height: 10px;
  background-color: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 6.25%;
  background-color: var(--accent-blue);
  transition: width 0.25s ease;
}

.header-stats {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Monospace font for score badge and timer badge */
.stat-badge {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  padding: 6px 14px;
  background-color: #f1f5f9;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  white-space: nowrap;
}

.score-badge {
  background-color: #eef2ff;
  border-color: #c7d2fe;
  color: #4338ca;
  transition: transform 0.15s ease;
}

/* Subtle Pulse + Count-Up Score Animation */
@keyframes scorePulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 rgba(37, 99, 235, 0);
  }
  50% {
    transform: scale(1.12);
    background-color: #dbeafe;
    color: #1d4ed8;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 rgba(37, 99, 235, 0);
  }
}

.score-badge.pulsing {
  animation: scorePulse 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Festive Confetti Dissolve Animation around Score Badge */
.mini-confetti {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  will-change: transform, opacity;
  animation: confettiBurst 4.4s cubic-bezier(0.15, 0.85, 0.35, 1) forwards;
}

@keyframes confettiBurst {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(0.6) rotate(0deg);
  }
  35% {
    opacity: 1;
    transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) scale(1.1) rotate(var(--rot));
  }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--tx) * 1.2), calc(-50% + var(--ty) * 1.2)) scale(0.2) rotate(calc(var(--rot) + 540deg));
  }
}

/* Main Viewport */
.main-viewport {
  flex: 1;
  position: relative;
  width: 100%;
  height: calc(100vh - 76px - 76px);
  overflow: hidden;
}

/* Centered Image Wrapper: Strictly 100% centered relative to screen center line */
.img-wrapper {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  height: calc(100% - 32px);
  max-height: calc(100vh - 76px - 76px - 32px);
  max-width: 60vw;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Image Container: Tight wrapper around rendered photo bitmap */
.img-container {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  width: fit-content;
  height: fit-content;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Difficulty Tag: Positioned INSIDE the top-left corner of the image photo frame */
.difficulty-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: rgba(15, 23, 42, 0.88);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: 10px;
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 12px;
}

.diff-label {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: #f8fafc;
  letter-spacing: 0.3px;
}

.diff-squares {
  display: flex;
  align-items: center;
  gap: 6px;
}

.diff-square {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  background-color: rgba(255, 255, 255, 0.2);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  transition: all 0.15s ease;
}

.diff-square.filled {
  border-style: solid;
}

/* Image Element with 6px border radius strictly capped to vertical viewport height */
.slide-img {
  max-width: 100%;
  max-height: calc(100vh - 76px - 76px - 40px);
  width: auto;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--border-img);
  border-radius: 6px;
  display: block;
}

/* Right Side Panel: Fills 100% of all remaining horizontal space to the right of the centered image */
.right-panel {
  position: absolute;
  left: calc(100% + 24px);
  top: 50%;
  transform: translateY(-50%);
  width: calc(50vw - 50% - 48px);
  min-width: 280px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  z-index: 20;
}

.right-panel.hidden {
  display: none;
}

.mobile-bottom-sheet {
  display: none;
}

.title-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-title-text {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
}

.card-desc-text {
  font-size: 19px;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Accuracy Selector (0 to 4) */
.accuracy-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.accuracy-label {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.accuracy-buttons-grid {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.acc-btn {
  background-color: #f8fafc;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 700;
  padding: 10px 15px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  max-width: 240px;
  transition: all 0.15s ease;
}

.acc-btn:hover {
  background-color: #e0e7ff;
  border-color: #c7d2fe;
  color: #3730a3;
}

.acc-btn.selected {
  background-color: var(--accent-blue);
  border-color: var(--accent-blue);
  color: #ffffff;
}

.acc-btn.selected[data-acc="0"] {
  background-color: var(--accent-rose);
  border-color: var(--accent-rose);
  color: #ffffff;
}

.acc-btn.selected[data-acc="4"] {
  background-color: var(--accent-green);
  border-color: var(--accent-green);
}

/* Footer */
.app-footer {
  height: 76px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface);
  border-top: 2px solid var(--border-color);
  flex-shrink: 0;
}

.app-footer.hidden {
  display: none !important;
}

/* Single 'Далі' Button */
.btn {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  padding: 14px 64px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s ease;
  outline: none;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #ffffff;
}
.btn-primary:hover {
  background-color: var(--accent-blue-hover);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  background-color: #94a3b8 !important;
}

#nextBtn {
  min-width: 320px;
  font-size: 20px;
  padding: 16px 48px;
}

/* Fullscreen Button */
#fullscreenBtn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #f1f5f9;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-size: 15px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 8px;
}
#fullscreenBtn:hover {
  background-color: #e2e8f0;
}

.btn-icon {
  font-size: 16px;
  line-height: 1;
}

/* Modal Popup */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-box {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 560px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  text-align: center;
}

.results-hero {
  margin-bottom: 24px;
}

.results-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent-blue);
  margin-bottom: 8px;
}

.results-score-num {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 900;
  color: var(--text-primary);
}

.results-breakdown {
  max-height: 240px;
  overflow-y: auto;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

.breakdown-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background-color: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 13px;
}

.modal-actions {
  display: flex;
  justify-content: center;
}

/* Start / Rules Modal Specific Styles */
.start-modal-box {
  max-width: 620px;
  text-align: left;
  padding: 32px 36px;
}

.start-modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.start-hero-emoji {
  font-size: 72px;
  line-height: 1;
  margin-bottom: 8px;
}

.start-modal-title {
  font-size: 34px;
  font-weight: 900;
  color: var(--accent-blue);
  margin-bottom: 4px;
}

.start-modal-content {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 28px;
}

.start-section {
  background-color: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 18px 22px;
}

.section-heading {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.game-essence-text {
  font-size: 17px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.55;
}

.section-intro {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.factors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.factor-card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  transition: transform 0.15s ease;
}

.factor-card:nth-child(1) {
  background-color: #f5f3ff;
  border-color: #ddd6fe;
}

.factor-card:nth-child(2) {
  background-color: #fffbeb;
  border-color: #fde68a;
}

.factor-card:nth-child(3) {
  background-color: #ecfdf5;
  border-color: #a7f3d0;
}

.factor-icon {
  font-size: 34px;
}

.factor-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.factor-info strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.factor-info span {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.35;
}

/* ==========================================================================
   Mobile Responsive Adaptation (@media max-width: 768px)
   Does not affect desktop view (screen widths > 768px remain identical)
   ========================================================================== */

@media (max-width: 768px) {
  html, body {
    overflow-y: auto;
    height: auto;
    min-height: 100%;
  }

  /* Header adjustments */
  .app-header {
    height: auto;
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 10px;
  }

  .logo-title {
    font-size: 22px;
  }

  .header-center {
    order: 3;
    width: 100%;
    max-width: 100%;
    gap: 12px;
    margin-top: 4px;
  }

  .slide-badge {
    font-size: 15px;
  }

  .header-stats {
    gap: 8px;
  }

  .stat-badge {
    font-size: 13px;
    padding: 5px 10px;
  }

  #fullscreenBtn {
    display: none;
  }

  /* Main Viewport & Layout on Mobile (30/70 vertical position: closer to top) */
  .main-viewport {
    height: auto;
    min-height: calc(100vh - 120px);
    overflow-y: visible;
    padding: 16px 16px 32px 16px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
  }

  .img-wrapper {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: none;
    margin-top: 3vh;
    margin-bottom: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 16px;
  }

  .img-container {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
    position: relative;
  }

  .slide-img {
    max-width: 100%;
    max-height: 42vh;
    width: auto;
    height: auto;
    object-fit: contain;
  }

  .difficulty-tag {
    top: 10px;
    left: 10px;
    padding: 6px 12px;
    gap: 8px;
    border-radius: 8px;
  }

  .diff-label {
    font-size: 13px;
  }

  .diff-square {
    width: 12px;
    height: 12px;
  }

  /* Hide Desktop Right Panel on Mobile */
  .right-panel {
    display: none !important;
  }

  /* Mobile Bottom Sheet Modal (Edge-to-edge with 0 side margins) */
  .mobile-bottom-sheet {
    display: block;
    position: fixed;
    bottom: 64px;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 550;
    background-color: #ffffff;
    border-radius: 20px 20px 0 0;
    padding: 16px 16px 14px 16px;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -10px 30px rgba(15, 23, 42, 0.2);
    max-height: 75vh;
    overflow-y: auto;
    animation: slideUpSheet 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .mobile-bottom-sheet::before {
    content: '';
    display: block;
    width: 36px;
    height: 4px;
    background-color: #cbd5e1;
    border-radius: 999px;
    margin: 0 auto 12px auto;
  }

  .mobile-title-block {
    text-align: center;
    margin-bottom: 12px;
  }

  .mobile-card-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 4px;
  }

  .mobile-card-desc {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    line-height: 1.4;
  }

  .mobile-accuracy-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
  }

  .accuracy-label {
    font-size: 14px;
    font-weight: 800;
    text-align: center;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    display: block;
  }

  .accuracy-buttons-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
  }

  .acc-btn {
    width: 100%;
    max-width: 100%;
    font-size: 16px;
    font-weight: 700;
    padding: 11px 14px;
    justify-content: center;
    text-align: center;
    border-radius: 12px;
  }

  /* Sticky Footer on Mobile */
  .app-footer {
    height: 64px;
    padding: 10px 16px;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 600;
    background-color: #ffffff;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.05);
  }

  #nextBtn {
    min-width: 100%;
    width: 100%;
    font-size: 18px;
    padding: 12px 20px;
  }

  /* Modals */
  .modal-backdrop {
    padding: 12px;
    align-items: flex-start;
    overflow-y: auto;
  }

  .modal-box {
    padding: 20px 16px;
    max-width: 100%;
    border-radius: 16px;
    margin: 10px 0;
  }

  .start-modal-box {
    padding: 24px 16px;
  }

  .start-hero-emoji {
    font-size: 56px;
  }

  .start-modal-title {
    font-size: 26px;
  }

  .start-section {
    padding: 14px 14px;
  }

  .section-heading {
    font-size: 17px;
  }

  .game-essence-text {
    font-size: 15px;
  }

  .factors-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .factor-card {
    flex-direction: row;
    text-align: left;
    padding: 12px 14px;
    gap: 14px;
  }

  .factor-icon {
    font-size: 30px;
  }
}

@keyframes slideUpSheet {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}