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

:root {
  --bg:          #F2EDE4;
  --card-bg:     #EAE3D5;
  --card-hover:  #E3DBc8;
  --text:        #2C2A26;
  --text-muted:  #8A8070;
  --border:      rgba(44, 42, 38, 0.10);

  /* Category accents */
  --spark:  #C4756A;
  --drive:  #5C6E8A;
  --world:  #7A9E82;
  --core:   #C49A4A;
  --lucky:  #8B7EC8;

  --radius-card: 16px;
  --radius-btn:  50%;
  --shadow-sm:   0 2px 12px rgba(44, 42, 38, 0.08);
  --shadow-md:   0 8px 32px rgba(44, 42, 38, 0.13);
  --shadow-lg:   0 16px 48px rgba(44, 42, 38, 0.18);

  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Paper grain overlay ── */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ── Screen management ── */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
  padding: 24px;
}

.screen.active {
  opacity: 1;
  pointer-events: all;
}

/* ── LANDING ── */
.landing-header {
  text-align: center;
  margin-bottom: 48px;
}

.app-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text);
  margin-bottom: 8px;
}

.app-subtitle {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Category grid ── */
.category-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
  max-width: 520px;
}

/* ── Category card — flip container ── */
.category-card {
  perspective: 1200px;
  cursor: pointer;
  height: 180px;
}

@media (max-width: 400px) {
  .category-card { height: 150px; }
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.25s ease;
  border-radius: var(--radius-card);
}

.category-card:hover .card-inner {
  transform: scale(1.04);
  box-shadow: var(--shadow-md);
}

.category-card.is-flipping .card-inner {
  transform: rotateY(180deg) scale(1.04);
}

.card-face {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--border);
}

.card-front {
  background-color: var(--card-bg);
  box-shadow: var(--shadow-sm);
}

.card-back {
  transform: rotateY(180deg);
}

/* category-specific tints on hover/active */
.category-card[data-category="spark"] .card-front { background-color: #EFE2DF; }
.category-card[data-category="drive"] .card-front { background-color: #DDE2EA; }
.category-card[data-category="world"] .card-front { background-color: #DDE8DF; }
.category-card[data-category="core"]  .card-front { background-color: #EEE5D3; }
.category-card[data-category="lucky"] .card-front { background-color: #E8E5F4; }

.category-card[data-category="spark"] .card-back { background-color: var(--spark); }
.category-card[data-category="drive"] .card-back { background-color: var(--drive); }
.category-card[data-category="world"] .card-back { background-color: var(--world); }
.category-card[data-category="core"]  .card-back { background-color: var(--core); }
.category-card[data-category="lucky"] .card-back { background-color: var(--lucky); }

/* Lucky card spans full width, shorter height */
.category-card[data-category="lucky"] {
  grid-column: 1 / -1;
  height: 110px;
}

.category-card[data-category="lucky"] .card-front {
  flex-direction: row;
  gap: 16px;
  justify-content: center;
}

.category-card[data-category="lucky"] .card-icon { color: var(--lucky); }

.card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2px;
}

.category-card[data-category="spark"] .card-icon { color: var(--spark); }
.category-card[data-category="drive"] .card-icon { color: var(--drive); }
.category-card[data-category="world"] .card-icon { color: var(--world); }
.category-card[data-category="core"]  .card-icon { color: var(--core); }

.card-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.02em;
}

.card-desc {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.card-count {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-muted);
  opacity: 0.6;
  margin-top: 6px;
  letter-spacing: 0.03em;
}

/* ── QUESTION SCREEN ── */
#screen-questions {
  justify-content: flex-start;
  padding: 0;
  gap: 0;
}

.question-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  flex-shrink: 0;
}

.back-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color 0.2s, background 0.2s;
  padding: 0;
}

.back-btn:hover {
  color: var(--text);
  background: var(--card-bg);
}

.back-btn svg {
  width: 20px;
  height: 20px;
}

.category-pill {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  background: var(--card-bg);
  border-radius: 100px;
  border: 1px solid var(--border);
}

.pill-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pill-name {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.header-spacer {
  width: 40px;
}

/* ── Progress bar ── */
.progress-bar-track {
  width: calc(100% - 48px);
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 24px;
  flex-shrink: 0;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 2px;
  background-color: var(--text-muted);
  transition: width 0.4s ease;
  width: 0%;
}

/* ── Question stage (card + hints) ── */
.question-stage {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 24px;
  overflow: hidden;
}

/* ── Question card ── */
.question-card {
  width: 100%;
  max-width: 480px;
  background: var(--card-bg);
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: clamp(28px, 6vw, 48px);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
  transform-origin: center bottom;
  will-change: transform;
  transition: box-shadow 0.2s ease;
}

.question-card.is-entering {
  animation: cardEnter 0.4s cubic-bezier(0.2, 0, 0.2, 1) forwards;
}

@keyframes cardEnter {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.question-text {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 4vw, 1.75rem);
  font-weight: 400;
  line-height: 1.5;
  color: var(--text);
  text-align: center;
  font-style: italic;
}

/* ── Swipe direction hints ── */
.swipe-hint-label {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.15s ease;
  pointer-events: none;
  border: 1.5px solid currentColor;
  padding: 6px 14px;
  border-radius: 6px;
}

.skip-hint   { left: 8px;  color: var(--spark); }
.answer-hint { right: 8px; color: var(--world); }

/* ── Action row ── */
.action-row {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 20px 24px 36px;
  flex-shrink: 0;
}

.swipe-instruction {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.action-btn {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--border);
  background: var(--card-bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, background 0.2s ease,
              border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.action-btn svg {
  width: 20px;
  height: 20px;
}

.btn-skip {
  color: var(--spark);
}

.btn-skip:hover, .btn-skip:active {
  background: rgba(196, 117, 106, 0.12);
  border-color: var(--spark);
  transform: scale(1.08);
  box-shadow: 0 4px 16px rgba(196, 117, 106, 0.2);
}

.btn-answer {
  color: var(--world);
}

.btn-answer:hover, .btn-answer:active {
  background: rgba(122, 158, 130, 0.12);
  border-color: var(--world);
  transform: scale(1.08);
  box-shadow: 0 4px 16px rgba(122, 158, 130, 0.2);
}

/* Override action-btn colors per active category */
body[data-category="spark"] .btn-answer { color: var(--spark); }
body[data-category="spark"] .btn-answer:hover, body[data-category="spark"] .btn-answer:active {
  background: rgba(196, 117, 106, 0.12);
  border-color: var(--spark);
  box-shadow: 0 4px 16px rgba(196, 117, 106, 0.2);
}

body[data-category="drive"] .btn-answer { color: var(--drive); }
body[data-category="drive"] .btn-answer:hover, body[data-category="drive"] .btn-answer:active {
  background: rgba(92, 110, 138, 0.12);
  border-color: var(--drive);
  box-shadow: 0 4px 16px rgba(92, 110, 138, 0.2);
}

body[data-category="core"] .btn-answer { color: var(--core); }
body[data-category="core"] .btn-answer:hover, body[data-category="core"] .btn-answer:active {
  background: rgba(196, 154, 74, 0.12);
  border-color: var(--core);
  box-shadow: 0 4px 16px rgba(196, 154, 74, 0.2);
}

/* ── Progress bar color per category ── */
body[data-category="spark"] .progress-bar-fill { background-color: var(--spark); }
body[data-category="drive"] .progress-bar-fill { background-color: var(--drive); }
body[data-category="world"] .progress-bar-fill { background-color: var(--world); }
body[data-category="core"]  .progress-bar-fill { background-color: var(--core); }

body[data-category="spark"]  .pill-icon { color: var(--spark); }
body[data-category="drive"]  .pill-icon { color: var(--drive); }
body[data-category="world"]  .pill-icon { color: var(--world); }
body[data-category="core"]   .pill-icon { color: var(--core); }
body[data-category="lucky"]  .pill-icon { color: var(--lucky); }
body[data-category="lucky"]  .progress-bar-fill { background-color: var(--lucky); }
body[data-category="lucky"]  .btn-answer { color: var(--lucky); }
body[data-category="lucky"]  .btn-answer:hover, body[data-category="lucky"] .btn-answer:active {
  background: rgba(139, 126, 200, 0.12);
  border-color: var(--lucky);
  box-shadow: 0 4px 16px rgba(139, 126, 200, 0.2);
}

/* ── DONE SCREEN ── */
.done-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: 320px;
}

.done-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.done-icon svg {
  width: 100%;
  height: 100%;
}

.done-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 500;
  font-style: italic;
  color: var(--text);
}

.done-sub {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.6;
}

.pill-btn {
  margin-top: 8px;
  padding: 12px 28px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}

.pill-btn:hover {
  background: var(--card-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* ── Mobile tweaks ── */
@media (max-width: 480px) {
  .landing-header { margin-bottom: 28px; }
  .category-grid { gap: 10px; }
  .category-card { height: 148px; }
  .category-card[data-category="lucky"] { height: 90px; }
  .card-face { padding: 14px; gap: 6px; }
  .card-icon { width: 40px; height: 40px; }
  .card-name { font-size: 1rem; }
  .card-desc { font-size: 0.65rem; }
  .card-count { display: none; }
  .action-row { gap: 24px; padding-bottom: 28px; }
  .action-btn { width: 50px; height: 50px; }
  .question-card { padding: 24px; min-height: 180px; }
}

/* ── Prevent overscroll bounce ── */
html { overflow: hidden; overscroll-behavior: none; }