/* =========================================================
   DUO-T Intro / Test / Calculating 페이지 스타일
   ========================================================= */

.dt-page-intro,
.dt-page-test,
.dt-page-calc {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 var(--sp-4);
  position: relative;
  z-index: var(--z-base);
}

/* ── INTRO ─────────────────────────────────────── */
.dt-intro {
  text-align: center;
  padding: var(--sp-7) 0;
}
.dt-intro-emoji {
  font-size: 80px;
  line-height: 1;
  margin-bottom: var(--sp-4);
  filter: drop-shadow(0 12px 28px var(--shadow-glow-me));
  animation: dt-bob 4s ease-in-out infinite;
}
@keyframes dt-bob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
.dt-intro-title {
  margin-bottom: var(--sp-3);
  background: linear-gradient(135deg, var(--c-me), var(--c-partner));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.dt-intro-desc {
  font-size: var(--fz-md);
  color: var(--txt-dim);
  line-height: var(--lh-normal);
  margin-bottom: var(--sp-6);
  word-break: keep-all;
}
.dt-intro-desc strong {
  color: var(--c-me);
  font-weight: 700;
}
.dt-intro-tips {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-7);
  text-align: left;
}
.dt-intro-tips li {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
  padding: var(--sp-4);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.dt-intro-tips-icon {
  font-size: 28px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-me), var(--c-partner));
  flex-shrink: 0;
}
.dt-intro-tips-h {
  font-size: var(--fz-md);
  font-weight: 700;
  color: var(--txt-hi);
  margin-bottom: 2px;
}
.dt-intro-tips-d {
  font-size: var(--fz-sm);
  color: var(--txt-dim);
}

.dt-intro-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
}

/* ── TEST ──────────────────────────────────────── */
.dt-test-counter {
  font-family: var(--font-mono);
  font-size: var(--fz-sm);
  color: var(--txt-dim);
  padding: var(--sp-2) var(--sp-3);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
}

.dt-test-progress {
  margin: var(--sp-2) 0 var(--sp-6);
}

.dt-test {
  padding: var(--sp-4) 0 var(--sp-7);
}
.dt-test-axis {
  font-size: var(--fz-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  color: var(--c-me);
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}
.dt-test-question {
  font-size: clamp(20px, 5.5vw, 28px);
  font-weight: 800;
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--sp-5);
  color: var(--txt-hi);
  word-break: keep-all;
}
.dt-test-options {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}
.dt-test-option {
  width: 100%;
  text-align: left;
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-glass);
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  color: var(--txt);
  font-size: var(--fz-md);
  font-weight: 500;
  line-height: var(--lh-snug);
  transition: all var(--dur-fast) var(--ease-out);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  word-break: keep-all;
  animation: dt-opt-in 0.4s var(--ease-out) both;
  animation-delay: calc(var(--idx, 0) * 60ms);
}
@keyframes dt-opt-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dt-test-option:hover {
  background: var(--bg-glass-hi);
  border-color: var(--border-hi);
  transform: translateX(4px);
}
.dt-test-option.selected {
  background: linear-gradient(135deg, var(--c-me), var(--c-partner));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 20px var(--shadow-glow-me);
}
.dt-test-hint {
  text-align: center;
  font-size: var(--fz-xs);
  color: var(--txt-mute);
  margin-top: var(--sp-3);
}

/* ── CALCULATING ───────────────────────────────── */
.dt-calculating {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--sp-5);
}
.dt-calc-hearts {
  position: relative;
  width: 200px;
  height: 120px;
}
.dt-calc-heart {
  position: absolute;
  top: 50%;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  filter: blur(2px);
  mix-blend-mode: screen;
  animation: dt-calc-pulse 1.6s ease-in-out infinite;
}
.dt-calc-heart::before {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: inherit;
  filter: blur(20px);
  opacity: 0.7;
}
.dt-calc-heart.me {
  left: 30px;
  background: var(--c-me);
  transform: translateY(-50%);
}
.dt-calc-heart.partner {
  right: 30px;
  background: var(--c-partner);
  transform: translateY(-50%);
  animation-delay: 0.4s;
}
@keyframes dt-calc-pulse {
  0%, 100% { transform: translateY(-50%) scale(1); opacity: 0.8; }
  50%      { transform: translateY(-50%) scale(1.2); opacity: 1; }
}

.dt-calc-step {
  font-size: var(--fz-lg);
  font-weight: 600;
  color: var(--txt);
  min-height: 1.5em;
  background: linear-gradient(135deg, var(--c-me), var(--c-partner));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.dt-calc-progress {
  width: 200px;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--r-pill);
  overflow: hidden;
}
.dt-calc-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--c-me), var(--c-partner));
  border-radius: var(--r-pill);
  transition: width 0.4s var(--ease-out);
}

/* ── 이전 문항 버튼 ─────────────────────────────── */
.dt-test-nav {
  display: flex;
  justify-content: center;
  margin: var(--sp-3) 0 0;
}
.dt-test-prev {
  appearance: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.18);
  color: var(--txt-dim, rgba(255,255,255,0.78));
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.01em;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 160ms, border-color 160ms, color 160ms;
}
.dt-test-prev:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.30);
  color: var(--txt, #fff);
}
.dt-test-prev[hidden] { display: none; }