/* -------------------------------------------------------------------------- */
/* Antibody Receptor — Slot Lab (static SPA)                                   */
/* Bright, casino-inspired science UI; no external dependencies. */
/* -------------------------------------------------------------------------- */

:root {
  --bg-top: #1a0f2e;
  --bg-mid: #2d1b4e;
  --bg-bottom: #0d1628;
  --surface: rgba(255, 255, 255, 0.12);
  --surface-strong: rgba(255, 255, 255, 0.2);
  --text: #f8f4ff;
  --text-muted: rgba(248, 244, 255, 0.72);
  --accent: #ff2d6a;
  --accent-hover: #ff5c8a;
  --accent-secondary: #00d4aa;
  --accent-secondary-hover: #3df5d1;
  --gold: #ffd23f;
  --frame: #ffd23f;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);

  /* Residue class colors (capsules) — positive = red, negative = blue */
  --aa-positive: #ef4444;
  --aa-negative: #3b82f6;
  --aa-hydrophobic: #f59e0b;
  --aa-polar: #22c55e;
  --aa-small: #2dd4bf;
  --aa-other: #6b7280;

  --radius: 12px;
  --radius-pill: 999px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Ubuntu, sans-serif;

  --reel-row-h: 54px;
  --cabinet-chrome: linear-gradient(145deg, #f5e6a8 0%, #c9a227 22%, #8b6914 50%, #d4af37 78%, #fff8dc 100%);
  --neon-pink: #ff2d6a;
  --neon-cyan: #00f5ff;

  /* Layout: use horizontal space, keep content centered */
  --app-max: min(1180px, calc(100vw - 2rem));
  --content-max: min(960px, 100%);
}

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

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

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background: linear-gradient(165deg, var(--bg-top) 0%, var(--bg-mid) 45%, var(--bg-bottom) 100%);
  background-attachment: fixed;
}

body {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: max(1rem, env(safe-area-inset-top, 0px))
    max(env(safe-area-inset-right, 0px), clamp(0.75rem, 3vw, 2.5rem))
    max(2.5rem, env(safe-area-inset-bottom, 0px))
    max(env(safe-area-inset-left, 0px), clamp(0.75rem, 3vw, 2.5rem));
  overflow-x: clip;
}

#app {
  position: relative;
  width: 100%;
  max-width: var(--app-max);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

/* -------------------------------------------------------------------------- */
/* App header — session score + restart */
/* -------------------------------------------------------------------------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  width: 100%;
  margin: 0 0 1rem;
  padding: 0.75rem clamp(0.75rem, 2vw, 1.5rem);
  background: linear-gradient(180deg, rgba(26, 15, 46, 0.95), rgba(45, 27, 78, 0.88));
  border-bottom: 2px solid rgba(255, 210, 63, 0.35);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.app-header__brand {
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--gold), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 24px rgba(255, 210, 63, 0.3);
}

.app-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.app-header__score {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 210, 63, 0.4);
  border-radius: var(--radius-pill);
}

.app-header__score-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.app-header__score-value {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--gold);
  min-width: 2ch;
  text-align: right;
}

.btn--restart {
  font-size: 0.85rem;
  padding: 0.55rem 1.1rem;
  background: linear-gradient(135deg, #dc2626, #991b1b);
  color: #fff;
}

.btn--restart:hover:not(:disabled) {
  background: linear-gradient(135deg, #ef4444, #b91c1c);
}

/* -------------------------------------------------------------------------- */
/* Start screen — casino floor + bounty showcase */
/* -------------------------------------------------------------------------- */

.start-hero {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto 1rem;
  text-align: center;
}

.start-casino-floor {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.75rem, 2.5vw, 2rem);
  flex-wrap: wrap;
  width: 100%;
  max-width: 100%;
  margin: 1rem auto 1.5rem;
  padding: clamp(1rem, 2.5vw, 1.75rem) clamp(0.75rem, 2vw, 1.5rem);
  background: radial-gradient(ellipse at center, rgba(255, 45, 106, 0.14), transparent 72%);
  border-radius: var(--radius);
}

.start-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  flex: 0 1 150px;
  max-width: min(175px, 28%);
  min-width: 0;
}

.start-side__cap {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-align: center;
}

.start-float-img {
  width: clamp(88px, 12vw, 150px);
  height: auto;
  max-width: 100%;
  object-fit: contain;
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.4));
  animation: float-y 3.5s ease-in-out infinite;
}

.start-float-img--igg2 {
  animation-delay: -1.2s;
}

@keyframes float-y {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.bounty-showcase {
  display: flex;
  gap: clamp(0.65rem, 2vw, 1.35rem);
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  flex: 1 1 min(320px, 100%);
  max-width: min(600px, 100%);
}

@media (max-width: 640px) {
  .bounty-showcase {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .start-side {
    flex: 1 1 40%;
    max-width: none;
  }
}

.bounty-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1 1 120px;
  padding: clamp(0.75rem, 1.5vw, 1.1rem) clamp(0.85rem, 2vw, 1.15rem);
  min-width: min(124px, 28vw);
  max-width: 200px;
  border-radius: var(--radius);
  border: 2px solid rgba(255, 255, 255, 0.2);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.bounty-tile__img {
  object-fit: contain;
  margin-bottom: 0.35rem;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.35));
}

.bounty-tile__name {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.2;
}

.bounty-tile__prize {
  margin-top: 0.35rem;
  font-size: clamp(1.2rem, 2.5vw, 1.55rem);
  font-weight: 900;
}

.bounty-tile__lupus {
  margin-top: 0.3rem;
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-align: center;
  line-height: 1.1;
}

.bounty-tile--hazard .bounty-tile__lupus {
  color: #fecaca;
  text-shadow:
    0 0 14px rgba(239, 68, 68, 0.65),
    0 0 28px rgba(127, 29, 29, 0.45);
}

.bounty-tile__img--dna {
  filter: drop-shadow(0 0 12px rgba(239, 68, 68, 0.45)) drop-shadow(0 4px 8px rgba(0, 0, 0, 0.35));
}

.bounty-tile--gold {
  border-color: rgba(255, 210, 63, 0.75);
  box-shadow: 0 0 20px rgba(255, 210, 63, 0.25);
}

.bounty-tile--gold .bounty-tile__prize {
  color: var(--gold);
  text-shadow: 0 0 12px rgba(255, 210, 63, 0.6);
}

.bounty-tile--red {
  border-color: rgba(248, 113, 113, 0.75);
  background: linear-gradient(165deg, rgba(127, 29, 29, 0.35), rgba(45, 27, 78, 0.2));
  box-shadow:
    0 0 20px rgba(239, 68, 68, 0.28),
    inset 0 0 24px rgba(127, 29, 29, 0.15);
}

.bounty-tile--hazard .bounty-tile__name {
  color: #fecaca;
  font-weight: 800;
}

.bounty-tile--green {
  border-color: rgba(52, 211, 153, 0.6);
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.2);
}

.bounty-tile--green .bounty-tile__prize {
  color: #34d399;
}

/* -------------------------------------------------------------------------- */
/* Utilities */
/* -------------------------------------------------------------------------- */

.hidden {
  display: none !important;
}

.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  padding: clamp(0.75rem, 2vw, 1.5rem) clamp(0.5rem, 2vw, 1.25rem) clamp(1.5rem, 3vw, 2.5rem);
  animation: screen-in 0.35s ease-out;
}

.screen--active {
  display: flex;
}

@keyframes screen-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* -------------------------------------------------------------------------- */
/* Corner risk badge                                                          */
/* -------------------------------------------------------------------------- */

.risk-corner {
  position: fixed;
  top: 4.5rem;
  right: 1rem;
  z-index: 50;
  background: var(--surface-strong);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius);
  padding: 0.5rem 0.85rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.15rem;
}

.risk-corner__label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.risk-corner__value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gold);
}

/* -------------------------------------------------------------------------- */
/* Typography & headings */
/* -------------------------------------------------------------------------- */

.title {
  font-size: clamp(2.1rem, 5.5vw, 3.1rem);
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 24px rgba(255, 45, 106, 0.35);
}

.heading {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  margin: 0 auto 0.35rem;
  width: 100%;
  max-width: var(--content-max);
}

.hint {
  color: var(--text-muted);
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  margin: 0 auto 1.25rem;
  width: 100%;
  max-width: var(--content-max);
  line-height: 1.45;
}

.mutate-hint {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0.5rem 0 1rem;
}

/* -------------------------------------------------------------------------- */
/* Buttons                                                                    */
/* -------------------------------------------------------------------------- */

.btn {
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-pill);
  padding: 0.85rem 1.75rem;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.15s ease;
  box-shadow: var(--shadow);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn--xl {
  font-size: 1.2rem;
  padding: 1.1rem 2.25rem;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), #c026d3);
  color: #fff;
}

.btn--primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-hover), #d946ef);
}

.btn--secondary {
  background: linear-gradient(135deg, var(--accent-secondary), #0891b2);
  color: #042f2e;
}

.btn--secondary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-secondary-hover), #06b6d4);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  box-shadow: none;
  margin-top: 0.5rem;
}

.btn--ghost:hover:not(:disabled) {
  color: var(--text);
}

/* -------------------------------------------------------------------------- */
/* Slot machine cabinet — V / D / J reels + lever                             */
/* -------------------------------------------------------------------------- */

.slot-machine {
  width: 100%;
  max-width: min(840px, 100%);
  margin: 0 auto 1rem;
}

#screen-start .slot-machine {
  margin-bottom: 0;
}

.slot-machine--compact {
  max-width: min(760px, 100%);
  margin-bottom: 0.35rem;
}

.slot-machine--compact .slot-machine__reels {
  padding: 0.35rem 0.5rem 0.5rem;
  gap: 0.35rem;
}

.slot-machine--compact .reel__window {
  min-height: calc(var(--reel-row-h) + 6px);
}

.slot-machine__marquee {
  overflow: hidden;
  background: linear-gradient(90deg, #1a0530, #3d0a4a, #1a0530);
  border: 2px solid rgba(255, 210, 63, 0.6);
  border-radius: var(--radius-pill);
  padding: 0.4rem 0.75rem;
  margin-bottom: 0.65rem;
  box-shadow:
    0 0 12px rgba(255, 45, 106, 0.5),
    inset 0 0 20px rgba(0, 245, 255, 0.08);
}

.slot-machine__marquee-inner {
  display: block;
  text-align: center;
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  text-shadow: 0 0 8px var(--neon-pink), 0 0 4px var(--neon-cyan);
  white-space: nowrap;
  animation: marquee-pulse 2.2s ease-in-out infinite;
}

@keyframes marquee-pulse {
  0%,
  100% {
    opacity: 1;
    filter: brightness(1);
  }
  50% {
    opacity: 0.88;
    filter: brightness(1.15);
  }
}

.slot-machine__cabinet {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: clamp(0.75rem, 2vw, 1.25rem);
  flex-wrap: wrap;
  width: 100%;
}

.slot-machine__panel {
  position: relative;
  flex: 1 1 360px;
  max-width: min(640px, 100%);
  padding: clamp(0.75rem, 1.5vw, 1rem) clamp(0.85rem, 2vw, 1.15rem) 0.95rem;
  border-radius: 16px;
  background: var(--cabinet-chrome);
  border: 3px solid #5c4010;
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.45),
    inset 0 2px 0 rgba(255, 255, 255, 0.45),
   0 0 30px rgba(255, 45, 106, 0.25);
}

.slot-machine__panel-shine {
  pointer-events: none;
  position: absolute;
  inset: 4px;
  border-radius: 12px;
  background: linear-gradient(125deg, transparent 40%, rgba(255, 255, 255, 0.35) 50%, transparent 60%);
  opacity: 0.25;
}

.slot-machine__brand {
  margin: 0 0 0.4rem;
  text-align: center;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  color: #3d2914;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
}

.slot-machine__reels {
  display: flex;
  justify-content: center;
  align-items: stretch;
  width: 100%;
  gap: clamp(0.35rem, 1.2vw, 0.65rem);
  padding: clamp(0.5rem, 1.2vw, 0.75rem) clamp(0.35rem, 1vw, 0.65rem) 0.7rem;
  background: linear-gradient(180deg, #0a0612 0%, #1a1028 100%);
  border-radius: 12px;
  border: 2px solid rgba(255, 210, 63, 0.35);
  box-shadow: inset 0 4px 16px rgba(0, 0, 0, 0.65);
}

.slot-machine__reels--static .reel__strip {
  transition: none !important;
}

.slot-machine__hint {
  margin: 0.5rem 0 0;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: #3d2914;
}

.slot-machine__panel--ding {
  animation: panel-ding 0.75s ease;
}

@keyframes panel-ding {
  0%,
  100% {
    box-shadow:
      0 12px 40px rgba(0, 0, 0, 0.45),
      inset 0 2px 0 rgba(255, 255, 255, 0.45),
      0 0 30px rgba(255, 45, 106, 0.25);
  }
  35% {
    box-shadow:
      0 12px 40px rgba(0, 0, 0, 0.45),
      inset 0 2px 0 rgba(255, 255, 255, 0.45),
      0 0 48px rgba(0, 245, 255, 0.55),
      0 0 64px rgba(255, 45, 106, 0.45);
  }
}

.slot-machine--landed {
  animation: compact-land 0.85s ease;
}

@keyframes compact-land {
  0%,
  100% {
    filter: brightness(1);
  }
  40% {
    filter: brightness(1.2);
  }
}

/* One reel column */
.reel {
  flex: 1;
  min-width: 0;
  max-width: 132px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* D reel fits four capsules */
.slot-machine__reels .reel:nth-child(2) {
  max-width: 168px;
}

.slot-machine__reels .aa--reel {
  min-width: 1.42rem;
  height: 1.42rem;
  font-size: 0.76rem;
}

.reel__label {
  width: 100%;
  text-align: center;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--gold);
  text-shadow: 0 0 10px var(--neon-pink);
  margin-bottom: 0.25rem;
  padding: 0.2rem;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 6px;
  border: 1px solid rgba(255, 210, 63, 0.4);
}

.reel__window {
  width: 100%;
  height: var(--reel-row-h);
  min-height: var(--reel-row-h);
  overflow: hidden;
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  background: radial-gradient(ellipse at center, #2a1838 0%, #0d0814 100%);
  box-shadow:
    inset 0 0 20px rgba(0, 0, 0, 0.9),
    0 0 12px rgba(255, 45, 106, 0.2);
}

.reel__strip {
  will-change: transform;
}

.reel__row {
  height: var(--reel-row-h);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  padding: 0 0.15rem;
}

.reel--spinning .reel__window {
  animation: reel-window-glow 0.35s ease-in-out infinite alternate;
}

@keyframes reel-window-glow {
  from {
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.9), 0 0 8px rgba(255, 45, 106, 0.15);
  }
  to {
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.9), 0 0 18px rgba(255, 45, 106, 0.45);
  }
}

.aa--reel {
  min-width: 1.75rem;
  height: 1.75rem;
  font-size: 0.88rem;
  border-radius: 0.35rem;
}

.aa--placeholder {
  background: linear-gradient(145deg, #4b5563, #374151) !important;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 800;
}

/* Lever */
.slot-lever {
  align-self: center;
  position: relative;
  width: 56px;
  height: 140px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.slot-lever:focus-visible {
  outline: 3px solid var(--neon-cyan);
  outline-offset: 4px;
}

.slot-lever__movable {
  position: absolute;
  bottom: 22px;
  left: 50%;
  width: 40px;
  height: 100px;
  margin-left: -20px;
  transform-origin: bottom center;
  transition: transform 0.45s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.slot-lever__arm {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 10px;
  height: 72px;
  margin-left: -5px;
  background: linear-gradient(90deg, #9ca3af, #d1d5db, #6b7280);
  border-radius: 4px;
  box-shadow: 2px 0 4px rgba(0, 0, 0, 0.3);
}

.slot-lever__grip {
  position: absolute;
  bottom: 64px;
  left: 50%;
  width: 36px;
  height: 36px;
  margin-left: -18px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ff5c8a, #be123c);
  border: 3px solid #881337;
  box-shadow:
    0 6px 0 #4c0519,
    0 8px 16px rgba(0, 0, 0, 0.4);
}

.slot-lever:hover .slot-lever__grip {
  filter: brightness(1.1);
}

.slot-lever--pulled .slot-lever__movable {
  transform: rotate(32deg);
}

.slot-lever__base {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 22px;
  background: linear-gradient(180deg, #6b7280, #374151);
  border-radius: 6px;
  border: 2px solid #1f2937;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

.slot-lever:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.slot-lever:disabled .slot-lever__grip {
  filter: grayscale(0.4);
}

/* Decorative context under compact machine */
.slot-context-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto 1.25rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.slot-context-row .slot-context {
  opacity: 0.42;
}

/* -------------------------------------------------------------------------- */
/* Slot row — context + framed CDR3                                           */
/* -------------------------------------------------------------------------- */

.slot-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(0.28rem, 1vw, 0.45rem);
  width: 100%;
  max-width: var(--content-max);
  margin: 1rem auto 1.5rem;
  padding: clamp(0.85rem, 1.5vw, 1.25rem);
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.slot-row--interactive .aa--cdr3 {
  cursor: pointer;
}

.slot-row--interactive .aa--cdr3:hover:not(.aa--disabled) {
  transform: scale(1.08);
  box-shadow: 0 0 0 3px var(--gold), 0 8px 20px rgba(0, 0, 0, 0.3);
}

.slot-row--interactive .aa--cdr3.aa--disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.slot-context {
  display: flex;
  gap: 0.25rem;
  opacity: 0.38;
  filter: grayscale(0.2);
}

.slot-frame {
  display: flex;
  gap: 0.28rem;
  padding: 0.45rem 0.55rem;
  border: 3px solid var(--frame);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.25);
  box-shadow:
    inset 0 0 20px rgba(255, 210, 63, 0.12),
    0 0 24px rgba(255, 210, 63, 0.15);
}

.slot-frame--flash {
  animation: frame-flash 0.45s ease-out;
}

@keyframes frame-flash {
  0%,
  100% {
    box-shadow:
      inset 0 0 20px rgba(255, 210, 63, 0.12),
      0 0 24px rgba(255, 210, 63, 0.15);
  }
  50% {
    box-shadow:
      inset 0 0 32px rgba(255, 45, 106, 0.35),
      0 0 40px rgba(255, 45, 106, 0.45);
  }
}

.slot-ellipsis {
  color: var(--text-muted);
  font-size: 1.25rem;
  font-weight: 300;
  padding: 0 0.15rem;
  user-select: none;
}

/* Amino acid capsule */
.aa {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.35rem;
  height: 2.35rem;
  border-radius: 0.5rem;
  font-weight: 800;
  font-size: 1.05rem;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.1s ease;
}

.aa--spin {
  animation: aa-spin-tick 0.08s ease-in-out infinite alternate;
}

@keyframes aa-spin-tick {
  from {
    opacity: 0.55;
    transform: translateY(2px) scale(0.92);
  }
  to {
    opacity: 1;
    transform: translateY(-2px) scale(1.02);
  }
}

.aa--class-positive {
  background: linear-gradient(145deg, var(--aa-positive), #b91c1c);
}
.aa--class-negative {
  background: linear-gradient(145deg, var(--aa-negative), #1d4ed8);
}
.aa--class-hydrophobic {
  background: linear-gradient(145deg, var(--aa-hydrophobic), #d97706);
}
.aa--class-polar {
  background: linear-gradient(145deg, var(--aa-polar), #15803d);
}
.aa--class-small {
  background: linear-gradient(145deg, var(--aa-small), #0d9488);
}
.aa--class-other {
  background: linear-gradient(145deg, var(--aa-other), #4b5563);
}

/* Rule blurbs: keyword tint matches residue capsule palette */
.rule-hl {
  font-weight: 800;
  padding: 0 0.06em;
  border-radius: 0.2em;
}

.rule-hl--positive {
  color: #fecaca;
  background: rgba(239, 68, 68, 0.28);
  box-shadow: inset 0 0 0 1px rgba(220, 38, 38, 0.45);
}

.rule-hl--negative {
  color: #dbeafe;
  background: rgba(59, 130, 246, 0.32);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.45);
}

.rule-hl--hydrophobic {
  color: #ffedd5;
  background: rgba(245, 158, 11, 0.32);
  box-shadow: inset 0 0 0 1px rgba(217, 119, 6, 0.45);
}

.rule-hl--polar {
  color: #dcfce7;
  background: rgba(34, 197, 94, 0.28);
  box-shadow: inset 0 0 0 1px rgba(22, 163, 74, 0.45);
}

.rule-hl--small {
  color: #ccfbf1;
  background: rgba(45, 212, 191, 0.28);
  box-shadow: inset 0 0 0 1px rgba(13, 148, 136, 0.45);
}

.rule-hl--charge {
  background: linear-gradient(90deg, #fca5a5, #93c5fd);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  box-shadow: none;
  filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.25));
}

.rule-hl--balanced {
  background: linear-gradient(90deg, #86efac, #fdba74);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  box-shadow: none;
  filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.2));
}

/* -------------------------------------------------------------------------- */
/* Antigen cards                                                              */
/* -------------------------------------------------------------------------- */

.antigen-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(0.85rem, 2vw, 1.35rem);
  width: 100%;
  max-width: var(--content-max);
}

@media (max-width: 540px) {
  .antigen-cards {
    grid-template-columns: 1fr;
  }
}

.antigen-card {
  position: relative;
  text-align: left;
  padding: 1.15rem 1.25rem;
  border-radius: var(--radius);
  background: var(--surface-strong);
  border: 2px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.antigen-card__bounty {
  position: absolute;
  top: 0.65rem;
  right: 0.75rem;
  font-size: 0.95rem;
  font-weight: 900;
  color: var(--gold);
  text-shadow: 0 0 10px rgba(255, 210, 63, 0.45);
}

.antigen-card:hover {
  transform: scale(1.02);
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(255, 210, 63, 0.25), var(--shadow);
}

.antigen-card:active {
  transform: scale(0.99);
}

.antigen-card__name {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0 0 0.35rem;
}

.antigen-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.antigen-card__label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(0, 212, 170, 0.25);
  color: var(--accent-secondary);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-pill);
}

.antigen-card__diff {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.antigen-card__rule {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.35;
}

.antigen-card__score {
  margin-top: 0.65rem;
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 700;
}

/* -------------------------------------------------------------------------- */
/* Target banner + stats */
/* -------------------------------------------------------------------------- */

.target-banner {
  width: 100%;
  max-width: var(--content-max);
  padding: clamp(0.85rem, 1.5vw, 1.1rem) clamp(1rem, 2vw, 1.35rem);
  border-radius: var(--radius);
  background: rgba(0, 212, 170, 0.12);
  border: 1px solid rgba(0, 212, 170, 0.35);
  margin-bottom: 0.5rem;
}

.target-banner__label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-secondary);
  margin-bottom: 0.25rem;
}

.target-banner__name {
  font-weight: 800;
  font-size: 1.1rem;
}

.target-banner__bounty {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--gold);
}

.target-banner__rule {
  display: block;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.stats-panel {
  width: 100%;
  max-width: var(--content-max);
  padding: clamp(1rem, 1.5vw, 1.25rem) clamp(1rem, 2vw, 1.35rem);
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  margin-bottom: 1rem;
}

.stat-row {
  display: grid;
  grid-template-columns: 5.5rem 1fr 2.5rem;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.stat-row:last-child {
  margin-bottom: 0;
}

.stat-row__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: left;
}

.stat-bar-wrap {
  height: 10px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.stat-bar {
  height: 100%;
  border-radius: var(--radius-pill);
  transition: width 0.35s ease;
}

.stat-bar--affinity {
  background: linear-gradient(90deg, var(--accent), #c026d3);
}

.stat-bar--specificity {
  background: linear-gradient(90deg, var(--accent-secondary), #0891b2);
}

.stat-row__value {
  font-weight: 800;
  text-align: right;
}

.stat-row__max {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.stat-row--risk-inline {
  grid-template-columns: 5.5rem 1fr;
  margin-top: 0.35rem;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-row__value--risk {
  color: var(--gold);
  font-size: 1.1rem;
}

.mutation-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
}

.mutation-bar__label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.mutation-bar__points {
  font-size: 2rem;
  font-weight: 900;
  color: var(--gold);
  min-width: 2ch;
}

/* -------------------------------------------------------------------------- */
/* Mutation overlay                                                           */
/* -------------------------------------------------------------------------- */

.mutation-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 1rem;
  animation: overlay-in 0.2s ease;
}

@keyframes overlay-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.mutation-panel {
  width: 100%;
  max-width: 400px;
  background: linear-gradient(180deg, var(--bg-mid), #1e1238);
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: env(safe-area-inset-bottom, 0);
}

.mutation-panel__title {
  margin: 0 0 1rem;
  font-size: 1rem;
}

.mutation-options {
  display: flex;
  gap: 0.65rem;
  justify-content: center;
  flex-wrap: wrap;
}

.mutation-options .aa {
  min-width: 3rem;
  height: 3rem;
  font-size: 1.35rem;
  cursor: pointer;
  border: 2px solid transparent;
}

.mutation-options .aa:hover {
  transform: scale(1.1);
  border-color: #fff;
}

/* -------------------------------------------------------------------------- */
/* Result screen                                                              */
/* -------------------------------------------------------------------------- */

.result-title {
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  margin: 0 auto 1rem;
  width: 100%;
  max-width: var(--content-max);
}

.result-title--win {
  color: var(--accent-secondary);
}

.result-title--death {
  color: #f87171;
}

.result-title--auto {
  color: #fbbf24;
}

.result-title--auto-lupus,
.result-title--auto-ra {
  font-size: clamp(1.35rem, 4.5vw, 2rem);
  color: #ef4444 !important;
  text-shadow:
    0 0 20px rgba(239, 68, 68, 0.85),
    0 0 40px rgba(220, 38, 38, 0.5);
  letter-spacing: 0.04em;
  line-height: 1.25;
}

.screen-result--wipe {
  background: radial-gradient(ellipse at center, rgba(127, 29, 29, 0.35), transparent 70%);
  border-radius: var(--radius);
  padding: 0.5rem clamp(0.75rem, 2vw, 1.25rem) 1.5rem;
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
}

.result-score-line {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  font-weight: 800;
  margin: 0 auto 0.75rem;
  width: 100%;
  max-width: var(--content-max);
  color: var(--accent-secondary);
}

.screen-result--wipe .result-score-line {
  color: #fca5a5;
  font-size: 1.25rem;
}

.result-message {
  font-size: clamp(1rem, 2vw, 1.15rem);
  line-height: 1.55;
  color: var(--text-muted);
  width: 100%;
  max-width: min(40em, var(--content-max));
  margin: 0 auto 1.5rem;
}

.result-detail {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: -0.75rem auto 1.25rem;
  max-width: var(--content-max);
  font-style: italic;
}

/* -------------------------------------------------------------------------- */
/* Mobile & narrow viewports — touch, scroll, safe areas */
/* -------------------------------------------------------------------------- */

button,
.antigen-card,
.slot-lever,
.slot-row--interactive .aa--cdr3 {
  touch-action: manipulation;
}

@media (max-width: 720px) {
  :root {
    --reel-row-h: 40px;
    --content-max: 100%;
  }

  .app-header {
    padding-top: max(0.65rem, env(safe-area-inset-top, 0px));
  }

  .risk-corner {
    top: max(4.25rem, calc(env(safe-area-inset-top, 0px) + 3.25rem));
    right: max(0.65rem, env(safe-area-inset-right, 0px));
    padding: 0.4rem 0.65rem;
  }

  .risk-corner__label {
    font-size: 0.58rem;
  }

  .risk-corner__value {
    font-size: 1.05rem;
  }

  .screen {
    padding-left: max(0.5rem, env(safe-area-inset-left, 0px));
    padding-right: max(0.5rem, env(safe-area-inset-right, 0px));
  }

  /* Stack slot cabinet: panel full width, lever below (thumb-friendly) */
  .slot-machine__cabinet {
    flex-direction: column;
    align-items: center;
  }

  .slot-machine__panel {
    flex: 1 1 auto;
    max-width: 100%;
  }

  .slot-lever {
    width: 64px;
    height: 148px;
    margin-top: 0.35rem;
  }

  .slot-machine__reels {
    gap: 0.28rem;
    padding: 0.45rem 0.35rem 0.55rem;
  }

  .reel {
    max-width: 118px;
  }

  .slot-machine__reels .reel:nth-child(2) {
    max-width: 148px;
  }

  .slot-machine__reels .aa--reel {
    min-width: 1.05rem;
    height: 1.05rem;
    font-size: 0.58rem;
    border-radius: 0.28rem;
  }

  .aa--reel {
    min-width: 1.15rem;
    height: 1.15rem;
    font-size: 0.62rem;
    border-radius: 0.3rem;
  }

  .reel__row {
    gap: 0.08rem;
    padding: 0 0.06rem;
  }

  /* Long CDR3 row: swipe horizontally instead of wrapping off-screen */
  .slot-row {
    flex-wrap: nowrap;
    justify-content: flex-start;
    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scroll-snap-type: x proximity;
    gap: 0.22rem;
    padding: 0.65rem 0.5rem;
    max-width: 100%;
  }

  .slot-row .slot-ellipsis,
  .slot-row .slot-context,
  .slot-row .slot-frame {
    flex-shrink: 0;
    scroll-snap-align: start;
  }

  .slot-frame {
    gap: 0.2rem;
    padding: 0.35rem 0.45rem;
  }

  .slot-row .aa {
    min-width: 1.95rem;
    height: 1.95rem;
    font-size: 0.78rem;
    border-radius: 0.4rem;
  }

  .mutation-options .aa {
    min-width: 2.65rem;
    height: 2.65rem;
    font-size: 1.1rem;
  }

  .stat-row {
    grid-template-columns: minmax(4.5rem, 28%) minmax(0, 1fr) minmax(2rem, 18vw);
    gap: 0.45rem;
  }

  .stat-row__label {
    font-size: 0.72rem;
  }

  .mutation-bar {
    gap: 0.75rem;
  }

  .mutation-overlay {
    align-items: center;
    padding: max(0.75rem, env(safe-area-inset-top, 0px)) 0.65rem max(0.75rem, env(safe-area-inset-bottom, 0px));
  }

  .mutation-panel {
    max-width: min(400px, calc(100vw - 1.25rem));
    max-height: min(520px, 85dvh);
    overflow-y: auto;
  }

  .antigen-card__bounty {
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  :root {
    --reel-row-h: 36px;
    --app-max: 100%;
  }

  body {
    padding-left: max(0.5rem, env(safe-area-inset-left, 0px));
    padding-right: max(0.5rem, env(safe-area-inset-right, 0px));
  }

  .btn {
    padding: 0.75rem 1.35rem;
  }

  .btn--xl {
    width: 100%;
    max-width: min(22rem, 100%);
    padding: 0.95rem 1.5rem;
  }

  .mutation-bar {
    flex-direction: column;
    width: 100%;
  }

  .mutation-bar .btn--secondary {
    width: 100%;
    max-width: min(20rem, 100%);
  }

  .reel {
    max-width: 100px;
  }

  .slot-machine__reels .reel:nth-child(2) {
    max-width: 128px;
  }

  .slot-machine__reels .aa--reel {
    min-width: 0.95rem;
    height: 0.95rem;
    font-size: 0.52rem;
    border-radius: 0.22rem;
  }

  .aa--reel {
    min-width: 1.02rem;
    height: 1.02rem;
    font-size: 0.55rem;
  }

  .slot-machine__marquee-inner {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
  }

  .slot-row .aa {
    min-width: 1.75rem;
    height: 1.75rem;
    font-size: 0.7rem;
  }

  .mutation-options .aa {
    min-width: 2.45rem;
    height: 2.45rem;
    font-size: 1rem;
  }
}

@media (max-width: 380px) {
  .stat-row {
    grid-template-columns: 4rem minmax(0, 1fr) 1.85rem;
    gap: 0.35rem;
  }

  .stat-row__value,
  .stat-row__max {
    font-size: 0.9rem;
  }
}