/* ============================================================
   LAST TWO — Knockout Chess Arena
   Design tokens: ink (charcoal-navy), parchment, brass, crimson,
   walnut. Display face Fraunces, body Inter, notation IBM Plex Mono.
   ============================================================ */

:root{
  --ink:        #1B2430;
  --ink-deep:   #12171F;
  --ink-raise:  #232E3D;
  --parchment:  #EDE6D6;
  --parchment-dim: #B9B2A0;
  --brass:      #C9A227;
  --brass-bright: #E2BD4E;
  --crimson:    #9C3A44;
  --walnut:     #6B4A33;
  --sage:       #5C8577;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --radius: 4px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  background: var(--ink);
  color: var(--parchment);
  font-family: var(--font-body);
  min-height: 100vh;
}

body{
  background-image:
    linear-gradient(180deg, rgba(0,0,0,0.18), transparent 200px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.015) 0px, rgba(255,255,255,0.015) 1px, transparent 1px, transparent 44px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.015) 0px, rgba(255,255,255,0.015) 1px, transparent 1px, transparent 44px);
}

h1, h2, h3{
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  color: var(--parchment);
  letter-spacing: -0.01em;
}

a{ color: var(--brass-bright); }

:focus-visible{
  outline: 2px solid var(--brass-bright);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

button{ font-family: var(--font-body); cursor: pointer; }

#app{
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px 64px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------------- topbar ---------------- */
.topbar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 0 22px;
  border-bottom: 1px solid rgba(201,162,39,0.18);
}
.wordmark{ display: flex; align-items: baseline; gap: 8px; }
.wordmark-glyph{ font-size: 22px; color: var(--brass-bright); transform: translateY(2px); }
.wordmark-text{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.06em;
}
.topbar-meta{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--parchment-dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------------- shared bits ---------------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass-bright);
  margin: 0 0 10px;
}
.btn-primary{
  background: var(--brass);
  color: var(--ink-deep);
  border: none;
  border-radius: var(--radius);
  padding: 14px 26px;
  font-weight: 600;
  font-size: 15px;
  transition: background 0.15s ease, transform 0.1s ease;
}
.btn-primary:hover{ background: var(--brass-bright); }
.btn-primary:active{ transform: translateY(1px); }

.btn-secondary{
  background: transparent;
  border: 1px solid rgba(237,230,214,0.28);
  color: var(--parchment);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.btn-secondary:hover{ border-color: var(--brass-bright); background: rgba(201,162,39,0.08); }
.btn-secondary.btn-danger:hover{ border-color: var(--crimson); background: rgba(156,58,68,0.12); color: #E8AEB3; }

.btn-text{
  background: none;
  border: none;
  color: var(--parchment-dim);
  font-size: 13px;
  text-decoration: underline;
  text-decoration-color: rgba(237,230,214,0.3);
  padding: 0;
}
.btn-text:hover{ color: var(--brass-bright); text-decoration-color: var(--brass-bright); }

/* ---------------- screens ---------------- */
.screen{ display: none; flex: 1; }
.screen.active{ display: flex; flex-direction: column; }

/* ================= SETUP ================= */
.setup-wrap{
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  padding-top: 64px;
  align-items: start;
}
.setup-hero h1{
  font-size: 44px;
  line-height: 1.08;
  margin: 8px 0 18px;
}
.lede{
  font-size: 16px;
  line-height: 1.6;
  color: var(--parchment-dim);
  max-width: 38ch;
}
.setup-form{
  background: var(--ink-raise);
  border: 1px solid rgba(201,162,39,0.18);
  border-radius: 6px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  box-shadow: var(--shadow-card);
}
.field{ display: flex; flex-direction: column; gap: 8px; }
.field-label{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--parchment-dim);
}
.field-label-row{ display: flex; justify-content: space-between; align-items: baseline; }
input[type="text"], select{
  background: var(--ink-deep);
  border: 1px solid rgba(237,230,214,0.18);
  color: var(--parchment);
  border-radius: var(--radius);
  padding: 11px 12px;
  font-size: 14px;
  font-family: var(--font-body);
}
input[type="text"]:focus, select:focus{ border-color: var(--brass-bright); }
.player-inputs{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 4px;
}
.player-inputs input{
  background: var(--ink-deep);
  border: 1px solid rgba(237,230,214,0.14);
  color: var(--parchment);
  border-radius: var(--radius);
  padding: 9px 11px;
  font-size: 13px;
}
.btn-begin{ margin-top: 6px; }

/* ================= BRACKET ================= */
.bracket-header{
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 40px 0 28px;
}
.bracket-ladder{
  display: flex;
  gap: 36px;
  overflow-x: auto;
  padding-bottom: 24px;
}
.bracket-round{
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 250px;
}
.bracket-round-title{
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brass);
  border-bottom: 1px solid rgba(201,162,39,0.25);
  padding-bottom: 8px;
  margin-bottom: 4px;
}
.bracket-round-matches{
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  gap: 18px;
  flex: 1;
}
.match-card{
  background: var(--ink-raise);
  border: 1px solid rgba(237,230,214,0.12);
  border-radius: var(--radius);
  padding: 13px 14px;
  position: relative;
}
.match-card.is-ready{
  border-color: var(--brass);
  cursor: pointer;
}
.match-card.is-ready:hover{ background: #2a3647; }
.match-card.is-done{ opacity: 0.85; }
.match-card.is-pending{ opacity: 0.45; }
.match-slot{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3px 0;
  font-size: 14px;
}
.match-slot .name{ font-weight: 500; }
.match-slot.is-winner .name{ color: var(--brass-bright); font-weight: 600; }
.match-slot.is-loser .name{ color: var(--parchment-dim); text-decoration: line-through; text-decoration-color: rgba(156,58,68,0.6); }
.match-slot.is-loser::after{ content: "♚"; color: var(--crimson); font-size: 12px; margin-left: 6px; }
.match-slot.is-winner::after{ content: ""; }
.match-vs{
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--parchment-dim);
  text-align: center;
  padding: 2px 0;
  letter-spacing: 0.08em;
}
.match-play-hint{
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brass-bright);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.match-feed-hint{
  margin-top: 8px;
  font-size: 11px;
  color: var(--parchment-dim);
  font-style: italic;
}
.champion-banner{
  margin-top: 12px;
  border: 1px solid var(--brass);
  background: rgba(201,162,39,0.08);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
}
.champion-banner .btn-primary{ margin-top: 12px; }

/* ================= MATCH ================= */
.match-header{
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 28px 0 18px;
  flex-wrap: wrap;
}
.match-header-round{
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brass);
  border: 1px solid rgba(201,162,39,0.35);
  border-radius: 999px;
  padding: 5px 12px;
}
.match-header-players{ display: flex; align-items: center; gap: 12px; font-size: 16px; }
.player-chip{ font-weight: 600; padding: 5px 12px; border-radius: 4px; }
.player-chip--brass{ background: rgba(201,162,39,0.15); color: var(--brass-bright); }
.player-chip--ink{ background: rgba(237,230,214,0.08); color: var(--parchment); border: 1px solid rgba(237,230,214,0.2); }
.vs{ color: var(--parchment-dim); font-family: var(--font-mono); font-size: 12px; }
.turn-indicator{
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--parchment-dim);
}

.match-body{
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  flex: 1;
  min-height: 0;
}
.board-stage{
  position: relative;
  background: radial-gradient(circle at 50% 35%, #283242 0%, #161d27 75%);
  border-radius: 8px;
  border: 1px solid rgba(201,162,39,0.15);
  overflow: hidden;
  min-height: 480px;
}
#board-canvas-wrap{ width: 100%; height: 100%; min-height: 480px; }
#board-canvas{ display: block; width: 100%; height: 100%; touch-action: none; }
.check-banner{
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--crimson);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 999px;
  display: none;
}
.check-banner.show{ display: block; }

.side-panel{
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
}
.panel-block{
  background: var(--ink-raise);
  border: 1px solid rgba(237,230,214,0.1);
  border-radius: 6px;
  padding: 14px;
}
.panel-title{
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--parchment-dim);
  display: block;
  margin-bottom: 8px;
}
.capture-row{ margin-bottom: 10px; }
.capture-row:last-child{ margin-bottom: 0; }
.capture-label{
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--parchment-dim);
  display: block;
  margin-bottom: 6px;
}
.capture-tray{ display: flex; flex-wrap: wrap; gap: 4px; min-height: 22px; font-size: 17px; }

.movelist-block{ flex: 1; min-height: 0; display: flex; flex-direction: column; }
.move-list{
  font-family: var(--font-mono);
  font-size: 12.5px;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 8px;
  align-content: start;
}
.move-list li{ color: var(--parchment-dim); }
.move-list li .mv-num{ color: var(--brass); margin-right: 4px; }
.move-list li .mv-white{ color: var(--brass-bright); }
.move-list li .mv-black{ color: var(--parchment); }

.controls-block{ display: flex; gap: 10px; }
.controls-block button{ flex: 1; }

/* ================= CHAMPION ================= */
.champion-wrap{
  margin: auto;
  text-align: center;
  max-width: 480px;
  padding: 40px 0;
}
.champion-glyph{ font-size: 64px; color: var(--brass-bright); line-height: 1; }
.champion-label{
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 13px;
  color: var(--parchment-dim);
  margin: 14px 0 6px;
}
#champion-name{ font-size: 52px; margin-bottom: 10px; }
.champion-sub{ color: var(--parchment-dim); margin-bottom: 30px; }

/* ================= MODALS ================= */
.modal-overlay{
  position: fixed;
  inset: 0;
  background: rgba(10,13,18,0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}
.modal-overlay.hidden{ display: none; }
.modal-card{
  background: var(--ink-raise);
  border: 1px solid rgba(201,162,39,0.3);
  border-radius: 8px;
  padding: 28px;
  max-width: 380px;
  width: 90%;
  box-shadow: var(--shadow-card);
}
.modal-title{ font-family: var(--font-display); font-size: 22px; font-weight: 600; margin: 0 0 10px; }
.modal-body{ color: var(--parchment-dim); font-size: 14px; line-height: 1.5; margin: 0 0 20px; }
.promotion-choices{ display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.promo-btn{
  background: var(--ink-deep);
  border: 1px solid rgba(201,162,39,0.3);
  color: var(--parchment);
  border-radius: var(--radius);
  padding: 14px 10px;
  font-weight: 600;
}
.promo-btn:hover{ border-color: var(--brass-bright); background: rgba(201,162,39,0.1); }
.modal-actions{ display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }

/* ================= RESPONSIVE ================= */
@media (max-width: 880px){
  #app{ padding: 0 16px 40px; }
  .setup-wrap{ grid-template-columns: 1fr; gap: 32px; padding-top: 32px; }
  .setup-hero h1{ font-size: 32px; }
  .match-body{ grid-template-columns: 1fr; }
  .board-stage{ min-height: 60vw; }
  #board-canvas-wrap{ min-height: 60vw; }
  .player-inputs{ grid-template-columns: 1fr; }
  .turn-indicator{ margin-left: 0; }
}