.duel-body { overflow: hidden; background: #08090b; color: #f1efe6; }
.duel-topbar { position: fixed; z-index: 20; inset: 0 0 auto; height: 42px; display: flex; align-items: center; justify-content: space-between; padding-left: 24px; border-bottom: 1px solid rgba(241,239,230,.25); background: rgba(8,9,11,.94); font-size: 10px; letter-spacing: .14em; }
.duel-brand { font-weight: 900; white-space: nowrap; }
.duel-topbar-actions { align-self: stretch; display: flex; align-items: stretch; }
.duel-topbar-actions > span { display: flex; align-items: center; padding: 0 18px; color: rgba(241,239,230,.55); }
.duel-menu-link,.duel-menu-link:visited { display: flex; align-items: center; gap: 10px; padding: 0 20px; border-left: 1px solid rgba(241,239,230,.25); background: #f1efe6; color: #08090b; text-decoration: none; font-weight: 900; }
.duel-menu-link i { color: #ff4f00; font-size: 16px; font-style: normal; transition: transform 140ms ease; }
.duel-menu-link:hover,.duel-menu-link:focus-visible { outline: 0; background: #ff4f00; color: #08090b; }
.duel-menu-link:hover i,.duel-menu-link:focus-visible i { color: #08090b; transform: translateX(-4px); }
.duel-shell { height: 100vh; }
.duel-screen { position: fixed; display: none; inset: 42px 0 var(--author-contact-height); overflow: auto; }
.duel-screen.is-active { display: grid; animation: screen-in 360ms steps(6,end) both; }
#duel-lobby { grid-template-columns: minmax(320px,.72fr) minmax(560px,1.28fr); }
.duel-lobby-copy { padding: clamp(60px,8vh,110px) var(--edge); border-right: 1px solid rgba(241,239,230,.24); background: radial-gradient(circle at 20% 80%, rgba(255,79,0,.26), transparent 30%); }
.duel-lobby-copy h1 { font-size: clamp(62px,8vw,124px); }
.duel-lobby-copy > p:last-child { max-width: 480px; color: rgba(241,239,230,.62); line-height: 1.7; }
.duel-config { padding: clamp(48px,7vh,90px) var(--edge); overflow: auto; }
.duel-config fieldset { border: 0; padding: 0; margin: 0 0 30px; }
.duel-config legend { width: 100%; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid rgba(241,239,230,.22); font-size: 10px; font-weight: 900; letter-spacing: .16em; }
.duel-choice-grid,.duel-vessel-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.duel-option { min-height: 72px; padding: 10px; border: 1px solid rgba(241,239,230,.25); background: transparent; color: inherit; cursor: pointer; text-align: left; }
.duel-option strong,.duel-option span { display: block; }
.duel-option span { margin-top: 7px; color: rgba(241,239,230,.5); font-size: 9px; line-height: 1.4; }
.duel-option.is-selected { border-color: #ff4f00; background: #ff4f00; color: #08090b; }
.duel-option.is-selected span { color: rgba(8,9,11,.65); }
.duel-theorem-config > p { margin: -2px 0 14px; color: rgba(241,239,230,.52); font-size: 10px; line-height: 1.55; }
.duel-loadout { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; }
.duel-theorem { position: relative; min-height: 118px; padding: 13px; overflow: hidden; border: 1px solid rgba(241,239,230,.22); background: rgba(241,239,230,.025); color: inherit; cursor: pointer; text-align: left; }
.duel-theorem::after { position: absolute; right: -18px; bottom: -27px; content: attr(data-sigil); color: rgba(241,239,230,.055); font-family: var(--display); font-size: 62px; letter-spacing: -.16em; }
.duel-theorem b,.duel-theorem strong,.duel-theorem small { position: relative; z-index: 1; display: block; }
.duel-theorem b { color: #ff4f00; font-size: 9px; letter-spacing: .13em; }
.duel-theorem strong { margin-top: 9px; font-size: 12px; line-height: 1.15; }
.duel-theorem small { margin-top: 9px; color: rgba(241,239,230,.48); font-size: 8px; line-height: 1.45; }
.duel-theorem.is-selected { border-color: #ff4f00; background: #ff4f00; color: #08090b; box-shadow: inset 0 0 0 2px #08090b; }
.duel-theorem.is-selected b,.duel-theorem.is-selected small { color: rgba(8,9,11,.68); }
.duel-theorem-empty { grid-column: 1/-1; min-height: 74px; display: grid; place-items: center; padding: 16px; border: 1px dashed rgba(241,239,230,.22); color: rgba(241,239,230,.46); font-size: 9px; line-height: 1.5; text-align: center; }
.duel-room-actions { display: grid; grid-template-columns: 1fr auto minmax(180px,.6fr) minmax(120px,.35fr); align-items: end; gap: 16px; }
.duel-room-actions legend { grid-column: 1/-1; }
.duel-room-actions > span { padding-bottom: 17px; color: rgba(241,239,230,.45); font-size: 10px; }
.duel-room-actions label span { display: block; margin-bottom: 6px; font-size: 9px; }
.duel-room-actions input { width: 100%; height: 54px; border: 1px solid #f1efe6; border-radius: 0; background: transparent; color: #f1efe6; text-transform: uppercase; text-align: center; font-size: 25px; letter-spacing: .25em; }
.duel-error { min-height: 22px; color: #ff6537; font-size: 11px; }
.duel-waiting { place-content: center; text-align: center; background: radial-gradient(circle,rgba(255,79,0,.18),transparent 34%); }
.duel-waiting h2 { font-size: clamp(54px,8vw,100px); }
#duel-room-code { font-family: var(--display); font-size: clamp(90px,17vw,230px); line-height: .9; letter-spacing: .13em; color: #ff4f00; }
.duel-arena-screen { overflow: hidden; background: #050608; }
#duel-canvas { width: 100%; height: 100%; display: block; cursor: crosshair; }
.duel-hud { position: absolute; z-index: 3; top: 18px; left: 22px; right: 22px; display: grid; grid-template-columns: 1fr auto 1fr; pointer-events: none; }
.duel-hud > div:last-child { text-align: right; }
.duel-hud span,.duel-hud strong { display: block; }
.duel-hud span { font-size: 9px; letter-spacing: .16em; color: rgba(241,239,230,.55); }
.duel-hud strong { font-size: 21px; }
.duel-score { display: flex; gap: 20px; align-items: center; }
.duel-score strong { font-size: 48px; line-height: .8; }
.duel-score i { color: #ff4f00; font-style: normal; }
.duel-countdown { position: absolute; z-index: 4; inset: 0; display: grid; place-items: center; pointer-events: none; font-family: var(--display); font-size: clamp(72px,16vw,220px); font-weight: 900; }
.duel-controls { position: absolute; z-index: 3; bottom: 14px; left: 22px; font-size: 9px; color: rgba(241,239,230,.55); }
.duel-ability-hud { position: absolute; z-index: 5; right: 22px; bottom: 18px; display: flex; gap: 7px; pointer-events: none; }
.duel-ability-chip { position: relative; width: clamp(145px,15vw,210px); min-height: 58px; padding: 9px 11px 12px; overflow: hidden; border: 1px solid rgba(241,239,230,.28); background: rgba(5,6,8,.86); backdrop-filter: blur(8px); }
.duel-ability-chip::after { position: absolute; right: 0; bottom: 0; left: 0; height: 3px; content: ''; background: #ff4f00; transform: scaleX(var(--ready,1)); transform-origin: left; }
.duel-ability-chip span,.duel-ability-chip strong,.duel-ability-chip small { display: block; }
.duel-ability-chip span { color: #ff4f00; font-size: 8px; font-weight: 900; letter-spacing: .13em; }
.duel-ability-chip strong { margin-top: 6px; overflow: hidden; font-size: 10px; line-height: 1.1; text-overflow: ellipsis; white-space: nowrap; }
.duel-ability-chip small { margin-top: 5px; color: rgba(241,239,230,.48); font-size: 7px; }
.duel-ability-chip.is-ready { border-color: rgba(255,79,0,.72); }
.duel-ability-message { position: absolute; z-index: 6; top: 90px; left: 50%; max-width: min(560px,80vw); padding: 11px 16px; border: 1px solid #ff4f00; background: rgba(5,6,8,.9); opacity: 0; transform: translate(-50%,-8px); pointer-events: none; text-align: center; transition: opacity 140ms ease,transform 140ms ease; }
.duel-ability-message.is-visible { opacity: 1; transform: translate(-50%,0); }
.duel-ability-message strong,.duel-ability-message span { display: block; }
.duel-ability-message strong { color: #ff4f00; font-size: 12px; }
.duel-ability-message span { margin-top: 4px; color: rgba(241,239,230,.58); font-size: 8px; }
.duel-verdict { grid-template-columns: 1fr 1fr; }
.duel-verdict > div,.duel-interpretation { padding: clamp(60px,9vh,120px) var(--edge); }
.duel-verdict > div { border-right: 1px solid rgba(241,239,230,.24); }
.duel-metrics { display: grid; grid-template-columns: repeat(2,1fr); margin-top: 40px; border: 1px solid rgba(241,239,230,.24); }
.duel-metrics div { padding: 17px; border: 1px solid rgba(241,239,230,.12); }
.duel-metrics span,.duel-metrics strong { display: block; }
.duel-metrics span { color: rgba(241,239,230,.5); font-size: 9px; }
.duel-metrics strong { margin-top: 5px; font-size: 24px; }
.duel-interpretation { display: flex; flex-direction: column; justify-content: center; background: radial-gradient(circle at 80% 25%,rgba(255,79,0,.22),transparent 30%); }
.duel-analysis { min-height: 240px; margin: 24px 0; padding: 26px; border: 1px solid rgba(241,239,230,.26); line-height: 1.7; }
.duel-analysis h3 { color: #ff4f00; font-size: clamp(35px,4vw,64px); }
.duel-analysis .sigil { font-size: 32px; letter-spacing: .2em; }
.duel-next-theorem { display: flex; align-items: center; justify-content: center; width: 100%; margin-top: 24px; text-align: center; }
.duel-restart { display: inline-flex; align-items: center; }
.duel-result-actions { display: flex; flex-wrap: wrap; align-items: stretch; gap: 12px; }
.duel-result-actions button,.duel-next-theorem { min-height: 48px; }
[data-rematch]:disabled { cursor: wait; filter: grayscale(.45); opacity: .72; }
@media (max-width: 860px) {
  .duel-topbar { padding-left: 14px; }
  .duel-brand { max-width: 36vw; overflow: hidden; text-overflow: ellipsis; }
  .duel-topbar-actions > span { display: none; }
  .duel-topbar .llm-provider-picker { min-width: 112px; }
  .duel-menu-link,.duel-menu-link:visited { padding: 0 13px; font-size: 8px; }
  #duel-lobby,.duel-verdict { grid-template-columns: 1fr; }
  .duel-lobby-copy { border-right: 0; border-bottom: 1px solid rgba(241,239,230,.24); }
  .duel-choice-grid,.duel-vessel-grid { grid-template-columns: repeat(2,1fr); }
  .duel-loadout { grid-template-columns: 1fr; }
  .duel-room-actions { grid-template-columns: 1fr 1fr; }
  .duel-room-actions > span { display: none; }
  .duel-room-actions label { grid-column: 1/-1; }
  .duel-verdict > div { border-right: 0; border-bottom: 1px solid rgba(241,239,230,.24); }
  .duel-ability-hud { right: 8px; bottom: 38px; left: 8px; gap: 4px; }
  .duel-ability-chip { width: 33.333%; min-height: 50px; padding: 7px; }
  .duel-controls { right: 8px; left: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}