/* ============================================
   Lumina Dental — Smile Check (self-guide)
   Interactive concern + beauty pathways
   ============================================ */

.dx-section {
  position: relative;
  padding: var(--section-padding) 0;
  background:
    radial-gradient(ellipse 70% 50% at 10% 20%, rgba(126, 221, 211, 0.14), transparent 55%),
    radial-gradient(ellipse 50% 40% at 90% 80%, rgba(212, 196, 168, 0.1), transparent 50%),
    linear-gradient(180deg, var(--ice) 0%, var(--pearl) 50%, var(--ice) 100%);
  overflow: hidden;
  /* Stop mobile browser / Lenis from re-anchoring scroll when guide height changes */
  overflow-anchor: none;
}

.dx-shell,
.dx-body {
  overflow-anchor: none;
}

.dx-section .container {
  position: relative;
  z-index: 1;
}

.dx-header {
  max-width: 640px;
  margin-bottom: 2rem;
}

.dx-shell {
  background:
    linear-gradient(165deg, rgba(255, 255, 255, 0.95), rgba(244, 251, 250, 0.92));
  border: 1px solid rgba(126, 221, 211, 0.35);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
  overflow: hidden;
  position: relative;
}

.dx-shell::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--mint-deep), var(--mint), var(--gold), var(--mint-deep));
  background-size: 200% 100%;
  animation: dxShimmer 5s linear infinite;
}

@keyframes dxShimmer {
  to { background-position: 200% 50%; }
}

.dx-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.4rem 0.75rem;
  flex-wrap: wrap;
}

.dx-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  background: rgba(126, 221, 211, 0.18);
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
}

.dx-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint-deep);
  animation: dxPulse 2s ease-in-out infinite;
}

@keyframes dxPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

.dx-progress {
  flex: 1;
  min-width: 140px;
  max-width: 280px;
}

.dx-progress-track {
  height: 4px;
  border-radius: 99px;
  background: rgba(11, 43, 51, 0.08);
  overflow: hidden;
}

.dx-progress-fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--mint-deep), var(--mint));
  box-shadow: 0 0 12px rgba(126, 221, 211, 0.55);
  transition: width 0.5s var(--ease-out-expo);
}

.dx-step-label {
  font-size: 0.72rem;
  color: var(--slate);
  margin-top: 0.35rem;
  text-align: right;
}

.dx-body {
  padding: 0.5rem 1.4rem 1.5rem;
  min-height: 320px;
}

.dx-panel {
  display: none;
  animation: dxIn 0.45s var(--ease-out-expo) both;
}

.dx-panel.is-active {
  display: block;
}

@keyframes dxIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.dx-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  color: var(--ocean);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 0.4rem;
}

.dx-title em {
  font-family: var(--font-italic-display);
  font-style: italic;
  font-weight: 400;
  color: var(--teal);
}

.dx-sub {
  font-size: 0.95rem;
  color: var(--slate);
  line-height: 1.55;
  max-width: 48ch;
  margin-bottom: 1.35rem;
}

.dx-disclaimer {
  font-size: 0.75rem;
  color: var(--slate);
  opacity: 0.75;
  margin-top: 1.25rem;
  line-height: 1.45;
  max-width: 56ch;
}

/* Path cards (start) */
.dx-path-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

@media (max-width: 640px) {
  .dx-path-grid {
    grid-template-columns: 1fr;
  }
}

.dx-path-card {
  text-align: left;
  padding: 1.35rem 1.25rem;
  border-radius: 20px;
  border: 1.5px solid rgba(11, 43, 51, 0.08);
  background: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s, border-color 0.3s;
  position: relative;
  overflow: hidden;
}

.dx-path-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(126, 221, 211, 0.15), transparent 55%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.dx-path-card:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 179, 168, 0.45);
  box-shadow: 0 16px 40px rgba(11, 43, 51, 0.1);
}

.dx-path-card:hover::after {
  opacity: 1;
}

.dx-path-card--beauty:hover {
  border-color: rgba(212, 196, 168, 0.65);
}

.dx-path-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  background: linear-gradient(145deg, var(--ocean), var(--teal));
  color: var(--mint);
  position: relative;
  z-index: 1;
}

.dx-path-card--beauty .dx-path-icon {
  background: linear-gradient(145deg, #3a2f22, #8a7355);
  color: var(--gold);
}

.dx-path-icon svg {
  width: 24px;
  height: 24px;
}

.dx-path-card strong {
  display: block;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ocean);
  margin-bottom: 0.35rem;
  position: relative;
  z-index: 1;
}

.dx-path-card p {
  font-size: 0.85rem;
  color: var(--slate);
  line-height: 1.45;
  position: relative;
  z-index: 1;
}

.dx-path-card .dx-path-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal);
  position: relative;
  z-index: 1;
}

.dx-path-card--beauty .dx-path-cta {
  color: #8a7355;
}

.dx-path-card .dx-path-cta svg {
  width: 14px;
  height: 14px;
  transition: transform 0.25s;
}

.dx-path-card:hover .dx-path-cta svg {
  transform: translateX(3px);
}

/* Option chips / cards */
.dx-options {
  display: grid;
  gap: 0.6rem;
}

.dx-options--grid {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.dx-option {
  text-align: left;
  padding: 0.95rem 1.05rem;
  border-radius: 16px;
  border: 1.5px solid rgba(11, 43, 51, 0.08);
  background: rgba(255, 255, 255, 0.92);
  cursor: pointer;
  transition: transform 0.3s var(--ease-spring), border-color 0.25s, box-shadow 0.3s, background 0.25s;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.dx-option:hover {
  border-color: rgba(46, 179, 168, 0.45);
  transform: translateX(3px);
  box-shadow: 0 10px 24px rgba(11, 43, 51, 0.07);
}

.dx-option.is-selected {
  border-color: var(--mint-deep);
  background: linear-gradient(120deg, rgba(126, 221, 211, 0.22), rgba(255, 255, 255, 0.95));
  box-shadow: 0 0 0 1px rgba(46, 179, 168, 0.25);
}

.dx-option-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background: rgba(11, 43, 51, 0.06);
  color: var(--teal);
}

.dx-option.is-selected .dx-option-icon {
  background: var(--ocean);
  color: var(--mint);
}

.dx-option-icon svg {
  width: 18px;
  height: 18px;
}

.dx-option strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ocean);
  margin-bottom: 0.15rem;
}

.dx-option span {
  font-size: 0.78rem;
  color: var(--slate);
  line-height: 1.4;
}

/* Severity segment */
.dx-segment {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.dx-seg {
  flex: 1;
  min-width: 100px;
  padding: 0.9rem 0.75rem;
  border-radius: 14px;
  border: 1.5px solid rgba(11, 43, 51, 0.08);
  background: white;
  cursor: pointer;
  text-align: center;
  transition: transform 0.25s, border-color 0.25s, background 0.25s, box-shadow 0.25s;
}

.dx-seg:hover {
  border-color: rgba(46, 179, 168, 0.4);
  transform: translateY(-2px);
}

.dx-seg.is-selected {
  border-color: transparent;
  color: white;
  box-shadow: 0 10px 24px rgba(11, 43, 51, 0.18);
}

.dx-seg.is-selected[data-level="mild"] {
  background: linear-gradient(145deg, #2BB3A8, #4EC4C0);
}
.dx-seg.is-selected[data-level="moderate"] {
  background: linear-gradient(145deg, #c49a3c, #d4c4a8);
  color: var(--navy);
}
.dx-seg.is-selected[data-level="severe"] {
  background: linear-gradient(145deg, #c45c5c, #e07a7a);
}

.dx-seg strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
}

.dx-seg span {
  font-size: 0.72rem;
  opacity: 0.85;
}

/* Result */
.dx-result {
  display: grid;
  gap: 1rem;
}

.dx-result-hero {
  padding: 1.35rem 1.4rem;
  border-radius: 20px;
  background: linear-gradient(145deg, var(--ocean), var(--ocean-soft));
  color: white;
  position: relative;
  overflow: hidden;
}

.dx-result-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(126, 221, 211, 0.2);
  filter: blur(40px);
  pointer-events: none;
}

.dx-urgency {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: 99px;
  margin-bottom: 0.75rem;
  position: relative;
}

.dx-urgency--routine {
  background: rgba(126, 221, 211, 0.25);
  color: var(--mint);
}
.dx-urgency--soon {
  background: rgba(212, 196, 168, 0.3);
  color: var(--gold);
}
.dx-urgency--urgent {
  background: rgba(224, 122, 122, 0.3);
  color: #ffb4b4;
}

.dx-result-hero h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.3rem, 2.5vw, 1.65rem);
  margin-bottom: 0.45rem;
  position: relative;
}

.dx-result-hero p {
  font-size: 0.92rem;
  opacity: 0.88;
  line-height: 1.55;
  max-width: 48ch;
  position: relative;
}

.dx-result-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.65rem;
}

.dx-meta-card {
  padding: 0.95rem 1rem;
  border-radius: 16px;
  background: white;
  border: 1px solid rgba(11, 43, 51, 0.08);
}

.dx-meta-card label {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.3rem;
}

.dx-meta-card strong {
  font-size: 0.95rem;
  color: var(--ocean);
  font-weight: 600;
}

.dx-meta-card p {
  font-size: 0.8rem;
  color: var(--slate);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.dx-tips {
  padding: 1rem 1.1rem;
  border-radius: 16px;
  background: rgba(126, 221, 211, 0.12);
  border: 1px solid rgba(46, 179, 168, 0.2);
}

.dx-tips h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.55rem;
}

.dx-tips ul {
  list-style: none;
  display: grid;
  gap: 0.4rem;
}

.dx-tips li {
  font-size: 0.88rem;
  color: var(--ocean);
  padding-left: 1.1rem;
  position: relative;
  line-height: 1.4;
}

.dx-tips li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint-deep);
}

.dx-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.25rem;
}

.dx-actions .btn {
  cursor: pointer;
}

.dx-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1.4rem 1.25rem;
  border-top: 1px solid rgba(11, 43, 51, 0.06);
  background: rgba(255, 255, 255, 0.55);
}

.dx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.2rem;
  border-radius: 99px;
  font-size: 0.88rem;
  font-weight: 500;
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s, opacity 0.25s, background 0.25s;
}

.dx-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

.dx-btn-ghost {
  background: transparent;
  color: var(--slate);
  border: 1.5px solid rgba(11, 43, 51, 0.12);
}

.dx-btn-ghost:hover:not(:disabled) {
  background: rgba(11, 43, 51, 0.04);
  transform: translateX(-2px);
}

.dx-btn-primary {
  background: linear-gradient(135deg, var(--ocean), var(--teal));
  color: white;
  box-shadow: 0 8px 22px rgba(11, 43, 51, 0.2);
  min-width: 130px;
}

.dx-btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(11, 43, 51, 0.28);
}

.dx-btn svg {
  width: 15px;
  height: 15px;
}

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

@media (prefers-reduced-motion: reduce) {
  .dx-panel,
  .dx-path-card,
  .dx-option,
  .dx-shell::before,
  .dx-badge .dot {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 560px) {
  .dx-body {
    padding: 0.35rem 1.1rem 1.15rem;
  }
  .dx-topbar,
  .dx-footer {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
  }
}