/* ==========================================================================
   Histórias & Conversas — styles.css

   TOKENS
   Cor:   canvas lavanda-clara + tinta ameixa-escura; cada categoria (Local,
          Emoção, Situação, Problema) tem uma cor de identidade própria,
          sempre usada junto com ícone + rótulo textual (nunca só cor).
   Tipo:  pilha de sistema em duas vozes — uma "display" mais arredondada e
          confiante para títulos e cartas, uma "body" neutra para leitura.
   Assinatura: as quatro cartas viradas, com padrão de "verso de baralho" e
          um brilho holográfico que varre a carta no momento da revelação.
   ========================================================================== */

:root {
  /* Cor — canvas & tinta */
  --canvas: #F6F3FF;
  --canvas-soft: #EFEAFB;
  --surface: #FFFFFF;
  --ink: #241C3D;
  --ink-soft: #5C5478;
  --ink-faint: #8A82A3;
  --border-soft: #E1D9F7;

  /* Cor — identidade das categorias */
  --local: #0EA5A0;
  --local-ink: #0A5E5C;
  --local-tint: #E1F7F4;

  --emocao: #E85585;
  --emocao-ink: #8A1B48;
  --emocao-tint: #FCE4ED;

  --situacao: #E8940E;
  --situacao-ink: #7A4C06;
  --situacao-tint: #FCEDD3;

  --problema: #6C5CE7;
  --problema-ink: #3B2E96;
  --problema-tint: #EAE6FD;

  --success: #23B37C;
  --success-tint: #DEF6EB;

  /* Deck / cor de fundo do verso das cartas */
  --deck-deep: #2A2148;
  --deck-deep-2: #382C63;

  /* Tipografia */
  --font-display: -apple-system, "Segoe UI Rounded", "Segoe UI", "Nunito", ui-rounded, system-ui, sans-serif;
  --font-body: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Espaçamento & forma */
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  --shadow-sm: 0 2px 8px rgba(42, 33, 72, 0.08);
  --shadow-md: 0 8px 24px rgba(42, 33, 72, 0.12);
  --shadow-lg: 0 20px 48px rgba(42, 33, 72, 0.18);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 160ms;
  --dur-med: 320ms;
  --dur-slow: 640ms;
}

/* ==========================================================================
   Reset & base
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 640px at 90% -10%, var(--canvas-soft), transparent),
    radial-gradient(900px 500px at -10% 110%, #E9F4FB, transparent),
    var(--canvas);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); margin: 0; }

p { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; }

.icon-slot svg, .btn-icon-slot svg { display: block; width: 1em; height: 1em; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 10px 0;
  z-index: 500;
}
.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 3px solid var(--problema);
  outline-offset: 3px;
  border-radius: 6px;
}

.is-hidden { display: none !important; }

/* ==========================================================================
   Shell / layout
   ========================================================================== */

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
}

.brand { display: flex; align-items: center; gap: var(--space-3); }

.brand-mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--local) 0%, var(--emocao) 38%, var(--situacao) 68%, var(--problema) 100%);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand-amp { color: var(--problema); }

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 var(--space-6) var(--space-6);
}

.app-footer {
  text-align: center;
  padding: var(--space-4) var(--space-6) var(--space-6);
}
.app-footer p {
  font-size: 0.78rem;
  color: var(--ink-faint);
  max-width: 640px;
  margin: 0 auto;
}

.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.005em;
  padding: 13px 26px;
  border-radius: 999px;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), opacity var(--dur-fast);
  min-height: 44px;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--problema), #8B6CF0);
  color: #fff;
  box-shadow: 0 10px 24px rgba(108, 92, 231, 0.35);
}
.btn-primary:hover:not(:disabled) { box-shadow: 0 14px 30px rgba(108, 92, 231, 0.42); transform: translateY(-1px); }

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border: 1.5px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover:not(:disabled) { border-color: var(--problema); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1.5px solid var(--border-soft);
  padding: 9px 18px;
  font-size: 0.88rem;
}
.btn-ghost:hover { background: var(--surface); color: var(--ink); }

.btn-chip {
  background: var(--surface);
  color: var(--problema-ink);
  border: 1.5px solid var(--problema-tint);
  padding: 9px 18px;
  font-size: 0.88rem;
  box-shadow: var(--shadow-sm);
}
.btn-chip:hover { background: var(--problema-tint); }
.btn-chip[aria-expanded="true"] { background: var(--problema); color: #fff; border-color: var(--problema); }

.btn-large { padding: 17px 40px; font-size: 1.08rem; }

.btn-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--canvas-soft);
  color: var(--ink-soft);
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  cursor: pointer;
  transition: background var(--dur-fast);
}
.btn-icon:hover { background: var(--border-soft); color: var(--ink); }

/* ==========================================================================
   Tela inicial
   ========================================================================== */

.screen-start {
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6) 0;
}

.start-panel {
  max-width: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.start-deck {
  position: relative;
  height: 108px;
  width: 220px;
  margin-bottom: var(--space-4);
}
.mini-card {
  position: absolute;
  top: 0; left: 50%;
  width: 76px; height: 104px;
  border-radius: 12px;
  background: var(--deck-deep);
  box-shadow: var(--shadow-md);
  border: 2px solid rgba(255,255,255,0.14);
}
.mini-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 7px;
  background-image: radial-gradient(rgba(255,255,255,0.16) 1px, transparent 1.4px);
  background-size: 9px 9px;
}
.mini-card--local     { transform: translateX(-136px) rotate(-16deg); background: linear-gradient(160deg, var(--deck-deep), var(--local)); z-index: 1; }
.mini-card--emocao    { transform: translateX(-46px) rotate(-5deg);  background: linear-gradient(160deg, var(--deck-deep), var(--emocao)); z-index: 2; }
.mini-card--situacao  { transform: translateX(44px) rotate(6deg);    background: linear-gradient(160deg, var(--deck-deep), var(--situacao)); z-index: 2; }
.mini-card--problema  { transform: translateX(134px) rotate(15deg);  background: linear-gradient(160deg, var(--deck-deep), var(--problema)); z-index: 1; }

.screen-start h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.015em;
}

.start-subtitle {
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 400px;
}

.start-hint {
  color: var(--ink-faint);
  font-size: 0.85rem;
  margin-top: var(--space-2);
}

.start-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

/* ==========================================================================
   Biblioteca de emoções
   ========================================================================== */

.screen-emotions {
  padding-top: var(--space-2);
  animation: fadeUp var(--dur-med) var(--ease-out);
}

.emotions-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}

.emotions-title-wrap h1 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.emotions-subtitle {
  color: var(--ink-soft);
  max-width: 620px;
  margin: var(--space-2) 0 var(--space-6);
}

.emotions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: var(--space-3);
  max-width: 1080px;
  width: 100%;
  margin: 0 auto var(--space-6);
}

.emotion-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  width: 100%;
  background: var(--surface);
  border: 1.5px solid var(--emocao-tint);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-align: left;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.emotion-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--emocao);
}
.emotion-tile:active { transform: translateY(-1px); }

.emotion-tile-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--emocao-tint);
  color: var(--emocao);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.emotion-tile-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--ink);
}

/* ==========================================================================
   Cartas
   ========================================================================== */

.cards-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  max-width: 1080px;
  width: 100%;
  margin: var(--space-6) auto var(--space-5);
}

.card {
  perspective: 1400px;
  height: 220px;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
  width: 100%;
  border-radius: var(--radius-md);
}
.card:disabled { cursor: default; }

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform var(--dur-slow) var(--ease-out);
  transform-style: preserve-3d;
}
.card.is-revealed .card-inner { transform: rotateY(180deg); }

.card-face {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Verso (face para baixo) — padrão de baralho */
.card-front {
  background: linear-gradient(150deg, var(--deck-deep) 0%, var(--deck-deep-2) 100%);
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  color: #fff;
  box-shadow: var(--shadow-md);
  border: 2px solid rgba(255,255,255,0.1);
}
.card-front::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: calc(var(--radius-md) - 8px);
  border: 1.5px dashed rgba(255,255,255,0.16);
  pointer-events: none;
}
.card-front::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 40%, rgba(255,255,255,0.16) 50%, transparent 60%);
  background-size: 220% 220%;
  background-position: 120% 0;
  pointer-events: none;
}
.card:hover .card-front::after,
.card:focus-visible .card-front::after {
  transition: background-position var(--dur-slow) var(--ease-out);
  background-position: -20% 100%;
}

.card-front .card-mark {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  background: rgba(255,255,255,0.1);
}
.card-front .card-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.85;
}
.card-front .card-tap-hint {
  font-size: 0.72rem;
  opacity: 0.55;
  margin-top: var(--space-1);
}

/* Frente (revelada) */
.card-back {
  transform: rotateY(180deg);
  background: var(--surface);
  border: 2px solid var(--card-color, var(--problema-tint));
  box-shadow: var(--shadow-md);
  padding: var(--space-4);
  gap: var(--space-2);
  text-align: left; /* reseta o text-align:center herdado do <button> */
}
.card-back .card-category-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  align-self: flex-start;
  padding: 5px 12px 5px 8px;
  border-radius: 999px;
  background: var(--card-tint, var(--problema-tint));
  color: var(--card-ink, var(--problema-ink));
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.card-back .card-category-tag .icon-slot { font-size: 1.05rem; color: var(--card-color, var(--problema)); }

.card-back .card-value {
  font-size: 0.98rem;
  line-height: 1.42;
  color: var(--ink);
  overflow-y: auto;
  flex: 1;
  padding-right: 2px;
}

.card-explore-btn {
  align-self: flex-start;
  margin-top: auto;
  font-size: 0.78rem;
  padding: 7px 14px;
}

/* Sweep de revelação (desabilitado com prefers-reduced-motion) */
.card.is-revealing .card-back {
  animation: cardSweep var(--dur-med) var(--ease-out);
}
@keyframes cardSweep {
  from { box-shadow: 0 0 0 4px var(--card-color, var(--problema)), var(--shadow-md); }
  to   { box-shadow: 0 0 0 0 transparent, var(--shadow-md); }
}

/* ==========================================================================
   Transição
   ========================================================================== */

.transition-msg {
  text-align: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin: var(--space-4) 0 var(--space-6);
  animation: fadeUp var(--dur-med) var(--ease-out);
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Painel de pergunta
   ========================================================================== */

.question-panel {
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  animation: fadeUp var(--dur-med) var(--ease-out);
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.progress-bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--canvas-soft);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--local), var(--emocao), var(--situacao), var(--problema));
  transition: width var(--dur-med) var(--ease-out);
}
.progress-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ink-soft);
  white-space: nowrap;
  font-family: var(--font-display);
}

.question-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-7) var(--space-6);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  min-height: 200px;
  justify-content: center;
}

.question-skill {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--problema-ink);
  background: var(--problema-tint);
  padding: 5px 14px;
  border-radius: 999px;
}

.question-text {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
  max-width: 560px;
}

.oral-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--ink-faint);
  font-size: 0.85rem;
  font-style: italic;
  margin-top: var(--space-2);
}
.oral-indicator .icon-slot { font-size: 1.1rem; opacity: 0.7; }

.deepen-wrap { position: relative; align-self: center; }

.popover {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: min(320px, 84vw);
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-soft);
  padding: var(--space-4);
  z-index: 40;
  animation: fadeUp var(--dur-fast) var(--ease-out);
}
.popover-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: var(--space-3);
}
.popover-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.popover-list li {
  background: var(--canvas-soft);
  color: var(--ink);
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: 999px;
}

.nav-buttons {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-3);
}

/* ==========================================================================
   Tela final
   ========================================================================== */

.screen-end {
  align-items: center;
  justify-content: center;
  text-align: center;
}
.end-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  max-width: 420px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8) var(--space-6);
}
.end-sparkle {
  color: var(--situacao);
  font-size: 3rem;
  animation: popIn var(--dur-slow) var(--ease-out);
}
@keyframes popIn {
  0% { transform: scale(0.4) rotate(-15deg); opacity: 0; }
  60% { transform: scale(1.12) rotate(4deg); opacity: 1; }
  100% { transform: scale(1) rotate(0); }
}
.end-panel h1 { font-size: 1.7rem; }
.end-panel p { color: var(--ink-soft); }

/* ==========================================================================
   Painel lateral — Explorar emoção
   ========================================================================== */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(36, 28, 61, 0.42);
  backdrop-filter: blur(2px);
  z-index: 90;
  animation: fadeIn var(--dur-fast) var(--ease-out);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.side-panel {
  position: fixed;
  top: 0; right: 0;
  height: 100%;
  width: min(420px, 92vw);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  display: flex;
  flex-direction: column;
  animation: slideIn var(--dur-med) var(--ease-out);
}
@keyframes slideIn {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.side-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-5) var(--space-4);
  border-bottom: 1px solid var(--border-soft);
}
.side-panel-eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--emocao-ink);
  margin-bottom: var(--space-1);
}
.side-panel-header h2 { font-size: 1.4rem; }

.side-panel-body {
  padding: var(--space-5);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.panel-section h3 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin-bottom: var(--space-2);
}
.panel-section p { color: var(--ink); line-height: 1.55; }

.panel-list { display: flex; flex-direction: column; gap: var(--space-2); }
.panel-list li {
  position: relative;
  padding-left: var(--space-4);
  color: var(--ink);
  line-height: 1.5;
  font-size: 0.95rem;
}
.panel-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--emocao);
}

.panel-disclaimer {
  font-size: 0.8rem;
  color: var(--ink-faint);
  font-style: italic;
  border-top: 1px solid var(--border-soft);
  padding-top: var(--space-4);
}

/* ==========================================================================
   Responsividade
   ========================================================================== */

@media (max-width: 900px) {
  .cards-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .app-header { padding: var(--space-3) var(--space-4); }
  main { padding: 0 var(--space-4) var(--space-4); }
  .cards-row { grid-template-columns: 1fr; gap: var(--space-3); margin: var(--space-4) auto; }
  .card { height: 168px; }
  .question-card { padding: var(--space-6) var(--space-4); min-height: 160px; }
  .nav-buttons { flex-direction: column-reverse; }
  .nav-buttons .btn { width: 100%; }
  .side-panel { width: 100%; }
  .brand-text { font-size: 1rem; }
  .start-deck { transform: scale(0.86); }
  .start-actions { flex-direction: column; width: 100%; }
  .start-actions .btn { width: 100%; }
  .emotions-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .emotions-header { align-items: flex-start; }
}

@media (max-width: 380px) {
  .btn-large { padding: 14px 28px; font-size: 1rem; }
  .emotions-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Movimento reduzido
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  html { scroll-behavior: auto; }
  /* Sem flip 3D: a face revelada troca instantaneamente, sem rotação nem brilho. */
  .card-inner { transition: none; transform: none !important; }
  .card-front, .card-back { position: relative; height: 100%; backface-visibility: visible; }
  .card:not(.is-revealed) .card-back,
  .card.is-revealed .card-front { display: none; }
  .card-back { transform: none; }
  .card-front::after { display: none; }
}