/* ============================================================
   arena402 — Design System & Global Styles
   Extracted from index.html. DO NOT arbitrarily change these
   values; the visual identity is locked. See CLAUDE.md.
   ============================================================ */

:root {
  --ink:        #0a0a0b;
  --ink-deep:   #060607;
  --paper:      #f4f2ec;
  --paper-dim:  rgba(244,242,236,0.62);
  --grey:       #8f8f94;
  --grey-dark:  #55555a;
  --line:       rgba(244,242,236,0.16);
  --line-strong:rgba(244,242,236,0.42);
  --ink-line:   rgba(10,10,11,0.18);
  --serif: 'Instrument Serif', 'Times New Roman', serif;
  --mono:  'IBM Plex Mono', 'Courier New', monospace;
  --frame: 10px;
  --edge: clamp(20px, 5vw, 84px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; background: var(--ink-deep); }
body {
  background: var(--ink-deep);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
button { font-family: inherit; }
::selection { background: var(--paper); color: var(--ink); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--ink-deep); }
::-webkit-scrollbar-thumb { background: var(--grey-dark); }

/* === Viewport frame === */
.frame {
  position: fixed; inset: var(--frame);
  border: 1px solid var(--line-strong);
  pointer-events: none; z-index: 300;
  mix-blend-mode: difference;
}

/* === Typography === */
.display {
  font-family: var(--serif);
  font-weight: 400;
  text-transform: uppercase;
  line-height: 0.92;
  letter-spacing: 0.015em;
}
.label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--grey);
}

/* === Nav === */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 250;
  mix-blend-mode: difference;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 26px var(--edge) 0;
}
.nav a, .nav button { color: var(--paper); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links.right { justify-content: flex-end; gap: 22px; }
.nav-link {
  background: none; border: none; cursor: pointer;
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--paper); opacity: 0.75; padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}
.nav-link:hover, .nav-link.active { opacity: 1; border-bottom-color: var(--paper); }
.nav-cta { opacity: 1; border: 1px solid var(--paper); padding: 6px 14px; }
.nav-cta:hover { background: var(--paper); color: var(--ink) !important; border-bottom-color: var(--paper); }

/* Auth cluster — unsigned / signed */
.nav-auth { display: inline-flex; align-items: center; gap: 14px; }
.nav-auth[hidden] { display: none !important; }

.nav-signin {
  position: relative;
  background: transparent;
  border: 1px solid var(--paper);
  color: var(--paper);
  cursor: pointer;
  padding: 8px 18px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  overflow: hidden;
  transition: color 0.25s ease, border-color 0.25s ease;
}
.nav-signin-label { position: relative; z-index: 1; }
.nav-signin-rule {
  position: absolute; inset: 0;
  background: var(--paper);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 0;
}
.nav-signin:hover { color: var(--ink); }
.nav-signin:hover .nav-signin-rule { transform: scaleX(1); }
.nav-signin:focus-visible {
  outline: 1px solid var(--paper);
  outline-offset: 3px;
}

.nav-deploy {
  background: none; border: none; cursor: pointer;
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--paper); opacity: 0.8; padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}
.nav-deploy:hover { opacity: 1; border-bottom-color: var(--paper); }

/* User menu — solid panel (avoids mix-blend washout) */
.nav-user { position: relative; isolation: isolate; }
.nav-user-trigger {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(10,10,11,0.55);
  border: 1px solid var(--line-strong);
  color: var(--paper);
  cursor: pointer;
  padding: 5px 10px 5px 5px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  mix-blend-mode: normal;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.nav-user-trigger:hover,
.nav-user-trigger[aria-expanded="true"] {
  border-color: var(--paper);
  background: rgba(10,10,11,0.85);
}
.nav-avatar {
  width: 22px; height: 22px; border-radius: 0;
  object-fit: cover; display: block;
  filter: grayscale(1) contrast(1.05);
  border: 1px solid var(--line-strong);
}
.nav-avatar-fallback {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--paper); color: var(--ink);
  font-family: var(--serif); font-size: 13px; letter-spacing: 0;
  text-transform: uppercase;
}
.nav-user-name {
  max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.nav-user-caret { opacity: 0.55; font-size: 9px; letter-spacing: 0; }

.nav-user-menu {
  position: fixed;
  top: 72px; right: var(--edge);
  min-width: 220px;
  background: var(--ink);
  border: 1px solid var(--line-strong);
  padding: 10px;
  z-index: 400;
  mix-blend-mode: normal;
  box-shadow: 0 24px 60px rgba(0,0,0,0.55);
  animation: menuIn 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}
.nav-user-menu[hidden] { display: none !important; }
@keyframes menuIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.nav-user-meta {
  padding: 10px 12px 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.nav-user-meta-name {
  font-family: var(--serif);
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  line-height: 1.05;
  margin-bottom: 6px;
}
.nav-user-item {
  display: block; width: 100%;
  background: none; border: none; cursor: pointer;
  text-align: left;
  color: var(--paper);
  font-family: var(--mono);
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.24em; text-transform: uppercase;
  padding: 12px;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-user-item:hover { background: rgba(244,242,236,0.06); }
.nav-user-item.danger { color: var(--grey); }
.nav-user-item.danger:hover { color: var(--paper); background: rgba(244,242,236,0.04); }

.nav-brand {
  background: none; border: none; cursor: pointer;
  font-family: var(--serif); font-size: 26px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--paper); line-height: 1;
  display: flex; align-items: center; gap: 10px;
  text-align: center;
}

/* === Page wrapper + reveal footer === */
#page { position: relative; z-index: 2; background: var(--ink); margin-bottom: 76vh; box-shadow: 0 40px 80px rgba(0,0,0,0.8); }
.site-footer {
  position: fixed; bottom: 0; left: 0; width: 100%; height: 76vh; z-index: 1;
  background: var(--ink-deep);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 8vh var(--edge) 5vh;
  overflow: hidden;
}
.footer-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 14px; }
.footer-ghost {
  font-family: var(--serif); text-transform: uppercase;
  font-size: clamp(52px, 11.5vw, 224px); line-height: 0.8;
  text-align: center; white-space: nowrap;
  color: transparent; -webkit-text-stroke: 1px rgba(244,242,236,0.34);
  user-select: none;
}
.footer-links { display: flex; gap: 26px; justify-content: center; }
.footer-links a { color: var(--grey); font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase; text-decoration: none; }
.footer-links a:hover { color: var(--paper); }

/* === Hero === */
.hero {
  min-height: 100vh;
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  align-items: center; gap: 4vw;
  padding: 120px var(--edge) 60px;
  position: relative;
}
.hero-copy { max-width: 640px; }
.hero-eyebrow { margin-bottom: 28px; }
.hero h1 { font-size: clamp(54px, 7.6vw, 122px); margin-bottom: 44px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin: 14px 0 40px; }
.hero-art { position: relative; display: flex; align-items: center; justify-content: center; }
.hero-art img {
  width: 100%; max-height: 84vh; object-fit: contain;
  mix-blend-mode: screen;
  filter: grayscale(1) contrast(1.04);
}

/* === Buttons === */
.btn {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  background: var(--paper); color: var(--ink);
  border: 1px solid var(--paper); cursor: pointer;
  padding: 14px 26px; transition: background 0.15s, color 0.15s;
}
.btn:hover { background: transparent; color: var(--paper); }
.btn.ghost { background: transparent; color: var(--paper); border-color: var(--line-strong); }
.btn.ghost:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn.sm { padding: 9px 16px; font-size: 10px; }

/* === Terminal box === */
.term {
  border: 1px solid var(--line);
  background: rgba(244,242,236,0.03);
  padding: 16px 20px;
  font-size: 13px; color: var(--paper-dim);
  cursor: pointer; transition: border-color 0.15s;
  max-width: 560px;
}
.term:hover { border-color: var(--line-strong); }
.term .prompt { color: var(--grey); }
.term .cursor { display: inline-block; animation: blink 1.1s step-end infinite; color: var(--paper); }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* === Marquee divider === */
.marquee {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow: hidden; white-space: nowrap;
  padding: 12px 0; font-size: 12px; letter-spacing: 0.2em;
  color: var(--grey); opacity: 0.8;
}
.marquee-inner { display: inline-block; animation: scrollx 60s linear infinite; }
@keyframes scrollx { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* === Sections === */
.section { padding: 110px var(--edge); }
.sec-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; flex-wrap: wrap; margin-bottom: 44px; }
.sec-head h2 { font-size: clamp(36px, 4.4vw, 60px); margin-top: 14px; }
.sec-sub { color: var(--grey); font-size: 13px; margin-top: 10px; max-width: 480px; }

/* === List rows === */
.rows { border-top: 1px solid var(--line); }
.row {
  display: grid;
  grid-template-columns: 56px 110px minmax(0,1fr) auto 120px;
  gap: 18px; align-items: center;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.15s;
}
.row:hover { background: rgba(244,242,236,0.035); }
.row .rank { font-family: var(--serif); font-size: 24px; color: var(--paper); }
.row .rank.dim { color: var(--grey-dark); }
.row .name { font-size: 13px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--paper); }
.row .meta { font-size: 11px; color: var(--grey); margin-top: 2px; }
.row .elo { font-family: var(--serif); font-size: 26px; text-align: right; }
.row .elo small { font-family: var(--mono); font-size: 9px; letter-spacing: 0.2em; color: var(--grey); display: block; }
.empty { text-align: center; padding: 60px 0; color: var(--grey); font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; }

/* === Battle rows === */
.battle-row {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 18px; align-items: center;
  padding: 18px 4px; border-bottom: 1px solid var(--line);
}
.battle-row.live { border-left: 2px solid var(--paper); padding-left: 14px; }
.battle-side { min-width: 0; }
.battle-side.r { text-align: right; }
.battle-mid { text-align: center; }
.battle-mid .outcome { font-size: 9px; letter-spacing: 0.24em; color: var(--grey); text-transform: uppercase; }
.battle-mid .price { font-family: var(--serif); font-size: 22px; color: var(--paper); }
.delta-up { color: var(--paper-dim); } .delta-down { color: var(--grey-dark); }

/* === Tier tags === */
.tier {
  font-size: 8px; font-weight: 600; letter-spacing: 0.22em;
  padding: 4px 9px; text-transform: uppercase;
  border: 1px solid var(--line-strong); color: var(--paper-dim);
  text-align: center; display: inline-block;
}
.tier-master  { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.tier-diamond { border-color: var(--paper-dim); color: var(--paper); }
.tier-gold    { color: var(--paper-dim); }
.tier-silver  { color: var(--grey); }
.tier-bronze  { color: var(--grey-dark); border-color: var(--line); }

/* === Win bar === */
.bar { height: 2px; background: rgba(244,242,236,0.14); }
.bar-fill { height: 100%; background: var(--paper); }

/* === Chips (filters) === */
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 36px; }
.chip {
  background: transparent; border: 1px solid var(--line); cursor: pointer;
  color: var(--grey); font-size: 9px; font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase;
  padding: 8px 14px; transition: all 0.15s;
}
.chip:hover { border-color: var(--line-strong); color: var(--paper); }
.chip.active { background: var(--paper); color: var(--ink); border-color: var(--paper); }

/* === Cards (agents / market) === */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card { background: var(--ink); padding: 28px; transition: background 0.15s; }
.card:hover { background: #0f0f11; }
.card h3 { font-family: var(--serif); font-size: 26px; text-transform: uppercase; letter-spacing: 0.03em; font-weight: 400; }
.kv { display: flex; justify-content: space-between; font-size: 11px; padding: 6px 0; color: var(--grey); }
.kv b { color: var(--paper); font-family: var(--serif); font-size: 16px; font-weight: 400; }
.tag { font-size: 9px; letter-spacing: 0.14em; padding: 3px 8px; border: 1px solid var(--line); color: var(--grey); text-transform: uppercase; }

/* === Stat strip === */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); max-width: 560px; }
.stat { padding: 16px 10px; text-align: center; border-right: 1px solid var(--line); }
.stat:last-child { border-right: none; }
.stat b { font-family: var(--serif); font-size: 30px; font-weight: 400; display: block; line-height: 1.1; }
.stat span { font-size: 8px; letter-spacing: 0.26em; color: var(--grey); text-transform: uppercase; }

/* === Paper feature panel === */
.paper-panel {
  background: var(--paper); color: var(--ink);
  padding: 110px var(--edge) 130px;
}
.paper-panel .label { color: var(--grey-dark); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 3.4vw, 60px); margin-top: 60px; }
.feat img {
  width: 100%; aspect-ratio: 1; object-fit: cover; display: block;
  filter: grayscale(1) contrast(1.06);
  border: 1px solid var(--ink-line);
  margin-bottom: 26px;
}
.feat .label { margin-bottom: 12px; }
.feat h3 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(30px, 2.9vw, 44px);
  line-height: 0.95; text-transform: uppercase;
  margin-bottom: 16px; color: var(--ink);
}
.feat p { font-size: 12.5px; line-height: 1.75; color: #3d3d42; margin-bottom: 20px; }
.feat-link {
  background: none; border: none; cursor: pointer;
  font-family: var(--mono); font-size: 10px; font-weight: 600;
  letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--ink); padding: 0 0 3px;
  border-bottom: 1px solid var(--ink);
}
.feat-link:hover { opacity: 0.6; }
.paper-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 16px; border-bottom: 1px solid var(--ink-line); padding-bottom: 18px; }
.paper-head h2 { font-family: var(--serif); font-size: clamp(34px, 4vw, 56px); font-weight: 400; text-transform: uppercase; line-height: 1; }

/* === Page headers (sub pages) === */
.page-head { padding: 150px var(--edge) 0; }

/* === Auth veil (OAuth return) === */
.auth-veil {
  position: fixed; inset: 0; z-index: 500;
  background: var(--ink-deep);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.35s ease;
}
.auth-veil.is-on {
  opacity: 1; pointer-events: auto;
}
.auth-veil-inner { text-align: center; padding: 40px var(--edge); }
.auth-veil-title {
  font-size: clamp(40px, 7vw, 88px);
  margin: 18px 0 28px;
}
.auth-veil-pulse {
  font-size: 28px;
  animation: blink 1.1s steps(1) infinite;
}

/* === Sign-in page === */
.auth-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: stretch;
  gap: 0;
}
.auth-copy {
  padding: clamp(120px, 18vh, 180px) var(--edge) 80px;
  display: flex; flex-direction: column; justify-content: center;
  border-right: 1px solid var(--line);
}
.auth-eyebrow { margin-bottom: 22px; }
.auth-title {
  font-size: clamp(52px, 8.2vw, 118px);
  margin-bottom: 22px;
}
.auth-sub {
  max-width: 34ch;
  color: var(--grey);
  font-size: 13px;
  line-height: 1.75;
  margin-bottom: 42px;
}
.auth-providers {
  display: flex; flex-direction: column; gap: 12px;
  max-width: 420px;
  margin-bottom: 28px;
}
.auth-provider {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: center;
  gap: 16px;
  width: 100%;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--paper);
  cursor: pointer;
  text-align: left;
  padding: 18px 20px;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.auth-provider-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
}
.auth-provider-text { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.auth-provider-text .label { color: var(--grey); }
.auth-provider-text strong {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 28px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1;
}
.auth-provider-arrow {
  font-size: 18px;
  opacity: 0.45;
  transition: opacity 0.2s ease, transform 0.25s ease;
}
.auth-provider:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
  transform: translateY(-1px);
}
.auth-provider:hover .auth-provider-text .label { color: var(--grey-dark); }
.auth-provider:hover .auth-provider-icon { border-color: rgba(10,10,11,0.2); }
.auth-provider:hover .auth-provider-arrow { opacity: 1; transform: translateX(4px); }
.auth-provider:focus-visible {
  outline: 1px solid var(--paper);
  outline-offset: 3px;
}
.auth-footnote { margin-bottom: 36px; }
.auth-back {
  align-self: flex-start;
  background: none; border: none; cursor: pointer;
  color: var(--grey);
  font-family: var(--mono);
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  padding: 0 0 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.auth-back:hover { color: var(--paper); border-bottom-color: var(--paper); }

.auth-art {
  position: relative;
  background: var(--ink-deep);
  display: flex; align-items: center; justify-content: center;
  padding: clamp(100px, 14vh, 160px) var(--edge) 80px;
  overflow: hidden;
}
.auth-art img {
  width: min(100%, 520px);
  aspect-ratio: 1;
  object-fit: cover;
  filter: grayscale(1) contrast(1.06);
  mix-blend-mode: screen;
  border: 1px solid var(--line);
  opacity: 0.92;
}
.auth-art-caption {
  position: absolute; left: var(--edge); right: var(--edge); bottom: 48px;
  display: flex; justify-content: space-between;
}

@media (prefers-reduced-motion: reduce) {
  .nav-signin-rule,
  .auth-provider,
  .auth-provider-arrow,
  .auth-veil,
  .nav-user-menu { transition: none !important; animation: none !important; }
}

/* === Responsive === */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 130px; }
  .hero-art { order: -1; }
  .hero-art img { max-height: 44vh; }
  .grid-3 { grid-template-columns: 1fr; }
  .nav { grid-template-columns: auto 1fr; padding-top: 18px; }
  .nav-links.left { display: none; }
  .nav-brand { font-size: 20px; }
  .nav-user-name { display: none; }
  .row { grid-template-columns: 40px minmax(0,1fr) auto; }
  .row .tier, .row .winbar { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat { border-bottom: 1px solid var(--line); }
  .stat:nth-child(n+3) { border-bottom: none; }
  .footer-ghost { font-size: 17vw; }
  .auth-page { grid-template-columns: 1fr; }
  .auth-copy { border-right: none; padding-bottom: 48px; }
  .auth-art { display: none; }
}