/* =========================================================
   Relation mode buttons — distinctive, vivid, light motion
   ========================================================= */

.relation-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  width: min(100%, 36rem);
  max-width: 100%;
  margin-top: 0.15rem;
  box-sizing: border-box;
}

.relation-actions .btn.btn-relation {
  flex: 1 1 9.5rem;
  min-width: min(100%, 9.2rem);
  margin: 0;
  padding: 0.95rem 1.05rem;
  border-radius: 1.15rem;
  border: 1px solid color-mix(in srgb, var(--teal) 16%, transparent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  font-family: var(--font-display), "Bricolage Grotesque", sans-serif;
  font-weight: 750;
  font-size: clamp(0.95rem, 2.4vw, 1.05rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--ink);
  background: color-mix(in srgb, #fff 70%, transparent);
  box-shadow: 0 8px 18px color-mix(in srgb, var(--teal) 8%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: visible;
  cursor: pointer;
  transform: translateZ(0);
  transition:
    color 0.35s ease,
    background 0.4s ease,
    border-color 0.35s ease,
    box-shadow 0.4s ease,
    transform 0.35s cubic-bezier(0.34, 1.35, 0.64, 1),
    opacity 0.35s ease,
    filter 0.35s ease;
}

/* unique palettes — only for selected fill */
.btn-relation[data-pick-relation="couple"] {
  --rel-accent: #ff3d68;
  --rel-deep: #c4123d;
  --rel-ink: #7a1230;
  --rel-wash: #ffe3eb;
  --rel-glow: rgba(255, 61, 104, 0.42);
}

.btn-relation[data-pick-relation="friends"] {
  --rel-accent: #ff9f1a;
  --rel-deep: #d97706;
  --rel-ink: #7a3d08;
  --rel-wash: #fff0d4;
  --rel-glow: rgba(255, 159, 26, 0.42);
}

.btn-relation[data-pick-relation="family"] {
  --rel-accent: #3b9eff;
  --rel-deep: #1d4ed8;
  --rel-ink: #123a6b;
  --rel-wash: #e4f1ff;
  --rel-glow: rgba(59, 158, 255, 0.42);
}

.btn-relation .rel-mark {
  display: none !important;
}

.btn-relation .rel-label {
  position: relative;
  z-index: 2;
  transition: letter-spacing 0.35s ease, transform 0.35s ease;
}

.btn-relation .rel-glow {
  position: absolute;
  inset: -35%;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 40%, var(--rel-glow), transparent 62%);
  opacity: 0;
  transform: scale(0.7);
  transition: opacity 0.45s ease, transform 0.55s cubic-bezier(0.34, 1.3, 0.64, 1);
}

/* soft press only — no hover spectacle */
.btn-relation:active:not(.is-picked-relation) {
  transform: scale(0.97);
}

.btn-relation:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--rel-accent) 30%, transparent),
    0 12px 28px color-mix(in srgb, var(--rel-deep) 14%, transparent);
}

.btn-relation.is-kb-focus {
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--rel-accent) 32%, transparent),
    0 14px 30px color-mix(in srgb, var(--rel-deep) 16%, transparent) !important;
}

/* —— SELECTED —— */
.relation-actions .btn.btn-relation.is-picked-relation {
  color: #fff !important;
  border-color: transparent !important;
  background: linear-gradient(145deg, var(--rel-accent), var(--rel-deep)) !important;
  box-shadow:
    0 0 0 1px color-mix(in srgb, #fff 18%, transparent) inset,
    0 14px 34px color-mix(in srgb, var(--rel-deep) 38%, transparent),
    0 0 40px color-mix(in srgb, var(--rel-accent) 28%, transparent) !important;
  animation: relPickArrive 0.7s cubic-bezier(0.34, 1.45, 0.64, 1) both;
  z-index: 5;
  outline: none;
  overflow: visible !important;
}

.relation-actions .btn.btn-relation.is-picked-relation .rel-label {
  position: relative;
  z-index: 3;
  letter-spacing: -0.02em;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.12);
}

.relation-actions .btn.btn-relation.is-picked-relation .rel-glow {
  opacity: 1;
  transform: scale(1.05);
  animation: relGlowPulse 2.4s ease-in-out infinite;
  z-index: 0;
}

/* shine clipped to button face — sits above gradient, under label */
.relation-actions .btn.btn-relation.is-picked-relation::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
  background: linear-gradient(
    115deg,
    transparent 28%,
    rgba(255, 255, 255, 0.5) 48%,
    transparent 68%
  );
  animation: relSelectShine 1.1s ease both !important;
}

.relation-actions .btn.btn-relation[data-pick-relation="couple"].is-picked-relation {
  background: linear-gradient(145deg, #ff5a7d 0%, #ff2d55 42%, #c4123d 100%) !important;
}

.relation-actions .btn.btn-relation[data-pick-relation="friends"].is-picked-relation {
  background: linear-gradient(145deg, #ffc14d 0%, #ff9f1a 45%, #e07000 100%) !important;
}

.relation-actions .btn.btn-relation[data-pick-relation="family"].is-picked-relation {
  background: linear-gradient(145deg, #6bb6ff 0%, #3b9eff 42%, #1d4ed8 100%) !important;
}

/* siblings: frosted white like welcome chips — cinema.css owns the look */
.relation-actions:has(.is-picked-relation) .btn-relation:not(.is-picked-relation) {
  /* see design-cinema.css */
}

.relation-actions:has(.is-picked-relation) .btn-relation:not(.is-picked-relation):active {
  transform: scale(0.97);
}

@keyframes relPickArrive {
  0% { transform: scale(0.92); filter: brightness(1.2); }
  55% { transform: scale(1.045); }
  100% { transform: scale(1); filter: none; }
}

@keyframes relMarkPop {
  0% { transform: scale(0.55) rotate(-18deg); }
  55% { transform: scale(1.22) rotate(8deg); }
  100% { transform: scale(1) rotate(0deg); }
}

@keyframes relGlowPulse {
  0%,
  100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.95; transform: scale(1.12); }
}

@keyframes relSelectShine {
  0% { transform: translateX(-120%) skewX(-16deg); opacity: 0; }
  25% { opacity: 1; }
  100% { transform: translateX(120%) skewX(-16deg); opacity: 0; }
}

/* kill legacy hover / shine layers from older sheets */
.btn-relation:hover,
.relation-actions .btn-relation:hover {
  transform: none;
}

.relation-actions .btn-relation:hover:not(.is-picked-relation) {
  /* keep tint identity; no lift */
  transform: none !important;
}

.btn-relation .rel-aura,
.btn-relation .rel-sheen,
.btn-relation .rel-orbit,
.btn-relation .rel-ripple,
.btn-relation .rel-shell {
  display: none !important;
}

.relation-actions .btn-relation::before {
  content: none !important;
  display: none !important;
}

@media (max-width: 560px) {
  .relation-actions {
    gap: 0.55rem;
  }

  .relation-actions .btn.btn-relation {
    flex: 1 1 calc(50% - 0.4rem);
    padding: 0.85rem 0.8rem;
    font-size: 0.92rem;
    gap: 0;
  }

  .btn-relation[data-pick-relation="family"] {
    flex: 1 1 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn-relation,
  .btn-relation.is-picked-relation,
  .btn-relation.is-picked-relation .rel-glow,
  .btn-relation.is-picked-relation::after {
    animation: none !important;
    transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease !important;
  }
}