/* ═══════════════════════════════════════════════════════════════════════════
   CHESSPRO — DESIGN SYSTEM
   Retained awwwards language: near-black ground, one electric accent,
   serif display type against a sans body, marquee, reveal-on-scroll,
   full-screen index, designed footer, grain.
   ═══════════════════════════════════════════════════════════════════════════ */
/* ── THEME TOKENS ───────────────────────────────────────────────────────
   Cream is the default ground: warm paper, near-black type, antique gold.
   Every literal colour in this sheet resolves through a token here, so the
   two themes are a data swap rather than a second stylesheet.
   ------------------------------------------------------------------- */
:root{
  color-scheme:light;

  /* ground & surfaces */
  --bg:#F6F1E3; --bg-rgb:246,241,227;
  --bg-2:#EFE7D3;
  --surface:#FFFCF3; --surface-rgb:255,252,243;
  --surface-2:#FBF6E9; --surface-3:#F0E9D6;
  --ink-rgb:22,17,8;

  /* type */
  --text:#161108;
  --muted:rgba(22,17,8,.76);
  /* Meta text also lands on the ice-blue Sportzfy cards, where the ink at .60
     measured 3.8:1. .68 clears AA on both grounds without going flat. */
  --dim:rgba(22,17,8,.68);

  /* hairlines & alpha fills */
  --line:rgba(22,17,8,.13);
  --line-2:rgba(22,17,8,.26);
  --fill-faint:rgba(22,17,8,.022);
  --fill-1:rgba(22,17,8,.045);
  --fill-2:rgba(22,17,8,.07);
  --fill-3:rgba(22,17,8,.11);

  /* accents */
  --violet:#5B21B6; --violet-2:#6D28D9; --violet-deep:#4C1D95;
  --violet-glow:rgba(91,33,182,.20);
  --violet-tint:rgba(91,33,182,.07);
  --violet-tint-2:rgba(91,33,182,.13);
  --violet-line:rgba(91,33,182,.30);
  --violet-soft:rgba(91,33,182,.13);
  --glow-a:rgba(203,166,92,.20); --glow-b:rgba(203,166,92,.12);

  --gold:#6E4A08;            /* legible gold: text, eyebrows, rules */
  --gold-2:#946C22;          /* lighter gold: large display type     */
  --gold-fill-a:#EBD496;     /* gold fills keep their brightness     */
  --gold-fill-b:#CBA65C;
  --on-gold:#241B07;
  --gold-tint:rgba(124,90,30,.09);
  --gold-tint-2:rgba(124,90,30,.14);
  --gold-line:rgba(124,90,30,.34);
  --gold-line-2:rgba(124,90,30,.55);
  --gold-glow:rgba(203,166,92,.32);

  --ok:#0A6338; --ok-tint:rgba(14,122,67,.09); --ok-line:rgba(14,122,67,.30);
  --warn:#8A5A00; --warn-tint:rgba(138,90,0,.09); --warn-line:rgba(138,90,0,.28);
  --danger:#B3142E; --danger-tint:rgba(179,20,46,.08); --danger-line:rgba(179,20,46,.28);
  --info:#0B5FA5;

  /* chrome */
  --nav-bg:rgba(246,241,227,.80);
  --nav-bg-solid:rgba(246,241,227,.96);
  --marquee-bg:#EFE7D3;
  --scroll-track:#EFE7D3;
  --scroll-thumb:rgba(124,90,30,.30);
  --scroll-thumb-h:rgba(124,90,30,.52);
  --select-bg:rgba(124,90,30,.22); --select-ink:#161108;
  --danger-fill:#B3142E;
  --on-violet:#FFFDF6; --on-danger:#FFFDF6;
  --frame-hi:rgba(255,255,255,.45);
  --overlay-bg:rgba(28,22,12,.58);
  --float-bg:rgba(255,252,243,.95);
  --panel-deep:#FBF6E9; --field-bg:#FFFCF3;
  --code-bg:#FBF6E9; --code-ink:#2E2517;
  --code-key:#5B21B6; --code-str:#7C5A1E;
  --code-comment:rgba(22,17,8,.64); --code-num:#0E7A43;
  --evalbar-bg:#E4DBC4;
  --evalbar-fill:linear-gradient(180deg,#FFFDF6,#D9D2C1);
  --promo-btn-bg:#E9DFC8;
  --stroke-word:rgba(22,17,8,.14);

  /* the board is content, not chrome — it stays wooden in both themes */
  --light-sq:#E9DFC8; --dark-sq:#8C6A45; --board-accent:#C9A34E;
  --board-frame-a:#EADCC0; --board-frame-b:#D8C49C;
  --piece-w:#FFFDF6; --piece-w-rim:#2A2118; --piece-w-shadow:rgba(22,17,8,.32);
  /* A black glyph on the walnut square is 3.8:1; a translucent rim leaves the
     miniature boards unreadable, so the rim goes solid cream (4.8:1). */
  --piece-b:#141019; --piece-b-rim:#FFFCF0; --piece-b-shadow:rgba(22,17,8,.32);
  --coord-light:rgba(60,40,20,.72); --coord-dark:#FFFCF0;
  --sq-last:rgba(201,163,78,.42);
  --sq-sel:rgba(91,33,182,.30); --sq-sel-ring:rgba(109,40,217,.85);
  --sq-check:radial-gradient(circle,rgba(179,20,46,.58),rgba(179,20,46,.04) 70%);
  --sq-dot:rgba(30,22,10,.30); --sq-ring:rgba(30,22,10,.26);
  --sq-hint:rgba(91,33,182,.85);
  --sq-best:rgba(14,122,67,.26); --sq-best-ring:rgba(14,122,67,.70);
  --sq-think:rgba(91,33,182,.10);

  /* elevation */
  --shadow:0 24px 60px rgba(70,52,20,.16);
  --shadow-sm:0 8px 22px rgba(70,52,20,.13);
  --card-rest:0 1px 2px rgba(22,17,8,.05),0 10px 26px rgba(22,17,8,.055);

  --serif:'Playfair Display',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Consolas,monospace;
  --r-sm:10px; --r:14px; --r-lg:20px; --r-xl:28px;
  --ease:cubic-bezier(.22,1,.36,1);
}

/* ── OPTIONAL DARK STAGE ─────────────────────────────────────────────── */
html[data-theme="dark"]{
  color-scheme:dark;
  --bg:#08070C; --bg-rgb:8,7,12;
  --bg-2:#0B0A11;
  --surface:#0F0E15; --surface-rgb:15,14,21;
  --surface-2:#15141D; --surface-3:#1B1A25;
  --ink-rgb:255,255,255;

  --text:#F6F4FF;
  --muted:rgba(246,244,255,.72);
  --dim:rgba(246,244,255,.58);

  --line:rgba(255,255,255,.085);
  --line-2:rgba(255,255,255,.14);
  --fill-faint:rgba(255,255,255,.02);
  --fill-1:rgba(255,255,255,.04);
  --fill-2:rgba(255,255,255,.055);
  --fill-3:rgba(255,255,255,.08);

  --violet:#9333EA; --violet-2:#C084FC; --violet-deep:#7C3AED;
  --violet-glow:rgba(168,85,247,.28);
  --violet-tint:rgba(168,85,247,.09);
  --violet-tint-2:rgba(168,85,247,.16);
  --violet-line:rgba(168,85,247,.34);
  --violet-soft:rgba(168,85,247,.20);
  --glow-a:rgba(168,85,247,.20); --glow-b:rgba(233,201,127,.10);

  --gold:#E9C97F; --gold-2:#F3DFAE;
  --gold-fill-a:#F3DFAE; --gold-fill-b:#C9A45C; --on-gold:#241B07;
  --gold-tint:rgba(233,201,127,.08);
  --gold-tint-2:rgba(233,201,127,.12);
  --gold-line:rgba(233,201,127,.34);
  --gold-line-2:rgba(233,201,127,.55);
  --gold-glow:rgba(233,201,127,.22);

  --ok:#22E07A; --ok-tint:rgba(34,224,122,.10); --ok-line:rgba(34,224,122,.30);
  --warn:#FFC23D; --warn-tint:rgba(255,194,61,.10); --warn-line:rgba(255,194,61,.28);
  --danger:#FF3D5A; --danger-tint:rgba(255,61,90,.08); --danger-line:rgba(255,61,90,.32);
  --info:#3DA5FF;

  --nav-bg:rgba(8,7,12,.72);
  --nav-bg-solid:rgba(8,7,12,.94);
  --marquee-bg:#06050A;
  --scroll-track:#07060B;
  --scroll-thumb:rgba(168,85,247,.32);
  --scroll-thumb-h:rgba(168,85,247,.55);
  --select-bg:rgba(168,85,247,.35); --select-ink:#fff;
  --danger-fill:#B3142E;
  --on-violet:#fff; --on-danger:#fff;
  --frame-hi:rgba(255,255,255,.07);
  --overlay-bg:rgba(4,3,8,.82);
  --float-bg:rgba(15,14,21,.92);
  --panel-deep:#0A0910; --field-bg:#08070C;
  --code-bg:#08070C; --code-ink:#C9C4DA;
  --code-key:#C084FC; --code-str:#E9C97F;
  --code-comment:rgba(246,244,255,.54); --code-num:#22E07A;
  --evalbar-bg:#151419;
  --evalbar-fill:linear-gradient(180deg,#FFFDF6,#D8D2C4);
  --promo-btn-bg:#0C0B12;
  --stroke-word:rgba(255,255,255,.09);

  /* the board is content, not chrome: it keeps the cream block's wood, piece
     and highlight tokens untouched. Only the frame goes dark. */
  --board-frame-a:#15141D; --board-frame-b:#0B0A10;

  --shadow:0 24px 70px rgba(0,0,0,.55);
  --shadow-sm:0 14px 40px rgba(0,0,0,.5);
  --card-rest:none;
}
/* ── end of theme tokens ──────────────────────────────────────────────── */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);font-weight:300;font-size:15px;line-height:1.7;
  color:var(--text);background:var(--bg);overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{ /* film grain */
  content:'';position:fixed;inset:-50%;z-index:0;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 8s steps(6) infinite;
}
@keyframes grain{0%,100%{transform:translate(0,0)}20%{transform:translate(-3%,2%)}40%{transform:translate(2%,-3%)}60%{transform:translate(-2%,-2%)}80%{transform:translate(3%,3%)}}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
img{max-width:100%}
::selection{background:var(--select-bg);color:var(--select-ink)}
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:var(--scroll-track)}
::-webkit-scrollbar-thumb{background:var(--scroll-thumb);border-radius:9px}
::-webkit-scrollbar-thumb:hover{background:var(--scroll-thumb-h)}

/* ── shell ─────────────────────────────────────────────────────────────── */
.app{display:none}
.app.active{display:block}
.wrap{max-width:1400px;margin:0 auto;padding:0 clamp(16px,4vw,64px);position:relative;z-index:2}

/* ── intro loader (A1) ─────────────────────────────────────────────────── */
#intro{position:fixed;inset:0;z-index:900;background:var(--bg);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;animation:introOut .9s var(--ease) 1.35s forwards}
#intro .mark{font-family:var(--serif);font-size:clamp(1.6rem,4vw,2.4rem);letter-spacing:.02em;display:flex;align-items:center;gap:14px}
#intro .mark i{color:var(--gold);font-size:.9em}
#intro .rule{width:min(280px,50vw);height:1px;background:var(--line-2);position:relative;overflow:hidden}
#intro .rule::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,var(--violet),transparent);animation:loadSlide 1.2s var(--ease) forwards}
#intro .sub{font-size:.66rem;letter-spacing:.32em;text-transform:uppercase;color:var(--dim)}
@keyframes loadSlide{from{transform:translateX(-100%)}to{transform:translateX(0)}}
@keyframes introOut{to{opacity:0;visibility:hidden}}

/* ── scroll progress ──────────────────────────────────────────────────── */
#progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--violet),var(--gold-fill-b));z-index:400;transition:width .1s linear}

/* ── marquee ──────────────────────────────────────────────────────────── */
.marquee{background:var(--marquee-bg);border-bottom:1px solid var(--line);overflow:hidden;position:relative;z-index:101;padding:9px 0}
.marquee__track{display:flex;width:max-content;animation:marquee 52s linear infinite}
.marquee:hover .marquee__track{animation-play-state:paused}
.marquee__item{display:flex;align-items:center;gap:14px;padding:0 26px;font-size:.63rem;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);white-space:nowrap}
.marquee__item b{color:var(--gold);font-weight:600}
.marquee__item i{font-size:.36rem;color:var(--violet)}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ── nav ──────────────────────────────────────────────────────────────── */
.nav{position:sticky;top:0;z-index:300;background:var(--nav-bg);backdrop-filter:blur(22px) saturate(140%);border-bottom:1px solid var(--line);transition:padding .35s var(--ease),background .35s}
.nav-inner{max-width:1400px;margin:0 auto;padding:15px clamp(16px,4vw,64px);display:flex;align-items:center;gap:24px;justify-content:space-between}
.nav.scrolled{padding:0;background:var(--nav-bg-solid)}
.nav-logo{display:flex;align-items:center;gap:11px;font-family:var(--serif);font-size:1.16rem;letter-spacing:.01em;cursor:pointer;white-space:nowrap}
.nav-logo .glyph{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(150deg,var(--violet),var(--violet-deep));color:var(--on-violet);font-size:.85rem;box-shadow:0 6px 20px var(--violet-glow)}
.nav-logo small{font-family:var(--sans);font-size:.55rem;letter-spacing:.24em;color:var(--dim);text-transform:uppercase;display:block;margin-top:-4px}
.nav-links{display:flex;gap:6px;list-style:none;align-items:center}
.nav-links a{font-size:.68rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:8px 11px;border-radius:100px;cursor:pointer;transition:color .3s,background .3s;position:relative}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--gold);background:var(--gold-tint)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-user{display:flex;align-items:center;gap:9px;padding:6px 14px 6px 6px;border-radius:100px;border:1px solid var(--line);background:var(--surface);font-size:.74rem;cursor:pointer;transition:border-color .3s}
.nav-user:hover{border-color:var(--line-2)}
.nav-avatar{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:.66rem;font-weight:700;background:linear-gradient(150deg,var(--gold-fill-a),var(--gold-fill-b));color:var(--on-gold)}
.nav-burger{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--text);cursor:pointer}
.nav-sheet{display:none;position:fixed;inset:64px 0 auto;background:var(--bg-2);border-bottom:1px solid var(--line);padding:18px;z-index:299}
.nav-sheet.on{display:block}
.nav-sheet a{display:block;padding:12px 6px;border-bottom:1px solid var(--line);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}

/* ── buttons ──────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:100px;border:1px solid transparent;background:none;color:var(--text);font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;transition:all .35s var(--ease);white-space:nowrap}
.btn i{font-size:.85em}
.btn-primary{background:linear-gradient(135deg,var(--violet),var(--violet-deep));color:var(--on-violet);box-shadow:0 10px 30px var(--violet-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px var(--violet-glow)}
.btn-gold{background:linear-gradient(135deg,var(--gold-fill-a),var(--gold-fill-b));color:var(--on-gold);box-shadow:0 10px 30px var(--gold-glow)}
.btn-gold:hover{transform:translateY(-2px)}
.btn-outline{border-color:var(--line-2);color:var(--text)}
.btn-outline:hover{border-color:var(--gold);color:var(--gold)}
.btn-ghost{background:var(--fill-1);border-color:var(--line);color:var(--muted)}
.btn-ghost:hover{background:var(--fill-3);color:var(--text)}
.btn-sm{padding:9px 18px;font-size:.64rem}
.btn-xs{padding:6px 13px;font-size:.6rem;letter-spacing:.1em}
.btn:active{transform:scale(.97)}
.btn[disabled]{opacity:.4;pointer-events:none}

/* ── typography ───────────────────────────────────────────────────────── */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.62rem;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-bottom:16px}
.eyebrow::before{content:'';width:26px;height:1px;background:var(--gold)}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-.02em;line-height:1.06}
.h1{font-size:clamp(2.6rem,5.6vw,4.6rem)}
.h2{font-size:clamp(1.8rem,3.4vw,2.9rem)}
.h3{font-size:clamp(1.15rem,1.8vw,1.5rem)}
.h1 em,.h2 em,.h3 em{font-style:italic;color:var(--gold)}
.lead{font-size:1rem;color:var(--muted);line-height:1.85;max-width:60ch}
.small{font-size:.8rem;color:var(--muted);line-height:1.75}
.tiny{font-size:.7rem;color:var(--dim);letter-spacing:.06em}
.mono{font-family:var(--mono);font-size:.76rem;letter-spacing:0}
.gold{color:var(--gold)} .violet{color:var(--violet-2)} .ok{color:var(--ok)} .warn{color:var(--warn)} .danger{color:var(--danger)}

/* ── sections ─────────────────────────────────────────────────────────── */
.section{padding:clamp(56px,8vw,104px) 0;position:relative}
.section.tight{padding:clamp(36px,5vw,60px) 0}
.section.alt{background:linear-gradient(180deg,transparent,var(--fill-faint) 12%,var(--fill-faint) 88%,transparent)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:clamp(26px,4vw,44px);flex-wrap:wrap}
.section-head .lead{max-width:52ch}
.divider{height:1px;background:var(--line);margin:0}

/* ── cards / grids ────────────────────────────────────────────────────── */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g5{grid-template-columns:repeat(5,minmax(0,1fr))}
.card{position:relative;padding:26px;border-radius:var(--r-lg);background:linear-gradient(170deg,var(--surface-2),var(--surface));border:1px solid var(--line);overflow:hidden;transition:transform .45s var(--ease),border-color .45s,box-shadow .45s}
.card::after{content:'';position:absolute;inset:0;border-radius:inherit;background:radial-gradient(120% 90% at 0% 0%,var(--violet-tint),transparent 55%);opacity:0;transition:opacity .45s;pointer-events:none}
.card:hover{transform:translateY(-3px);border-color:var(--violet-line);box-shadow:var(--shadow)}
.card:hover::after{opacity:1}
.card .icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--violet-tint);border:1px solid var(--violet-line);color:var(--violet-2);font-size:1rem;margin-bottom:16px}
.card h3{font-size:1.05rem;margin-bottom:7px;font-family:var(--sans);font-weight:600;letter-spacing:0}
.card p{font-size:.83rem;color:var(--muted);line-height:1.72}
.card .tag{position:absolute;top:18px;right:18px;font-size:.55rem;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);border:1px solid var(--line);padding:3px 8px;border-radius:100px}
.card.clickable{cursor:pointer}
.card .meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:.65rem;color:var(--dim);letter-spacing:.04em}
.card .arrow{position:absolute;bottom:22px;right:22px;color:var(--dim);font-size:.7rem;transition:transform .4s var(--ease),color .4s}
.card.clickable:hover .arrow{transform:translateX(4px);color:var(--gold)}

/* ── pills / chips / badges ───────────────────────────────────────────── */
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:100px;border:1px solid var(--line);background:var(--fill-1);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);cursor:pointer;transition:all .25s}
.chip:hover{border-color:var(--line-2);color:var(--text)}
.chip.on{background:var(--gold-tint-2);border-color:var(--gold-line);color:var(--gold)}
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:6px;font-size:.56rem;letter-spacing:.14em;text-transform:uppercase;font-weight:600;border:1px solid transparent}
.badge-ok{background:var(--ok-tint);color:var(--ok);border-color:var(--ok-line)}
.badge-warn{background:var(--warn-tint);color:var(--warn);border-color:var(--warn-line)}
.badge-dim{background:var(--fill-1);color:var(--dim);border-color:var(--line)}
.badge-violet{background:var(--violet-tint-2);color:var(--violet-2);border-color:var(--violet-line)}
.badge-gold{background:var(--gold-tint-2);color:var(--gold);border-color:var(--gold-line)}

/* ── hero ─────────────────────────────────────────────────────────────── */
.hero{position:relative;padding:clamp(48px,7vw,96px) 0 clamp(40px,6vw,72px);overflow:hidden}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;z-index:0}
.hero-glow.a{width:520px;height:520px;background:var(--glow-a);top:-120px;right:-60px;animation:floatY 11s ease-in-out infinite}
.hero-glow.b{width:420px;height:420px;background:var(--glow-b);bottom:-160px;left:-120px;animation:floatY 14s ease-in-out infinite reverse}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-28px)}}
.hero-inner{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(28px,5vw,64px);align-items:center;position:relative;z-index:2}
.hero h1{margin-bottom:22px}
.hero h1 em{display:inline;font-style:italic;color:var(--gold)}
.hero .lead{max-width:48ch;margin-bottom:30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}
.hero-note div{font-size:.68rem;color:var(--dim);letter-spacing:.06em}
.hero-note b{display:block;font-family:var(--serif);font-size:1.35rem;color:var(--text);font-weight:400;letter-spacing:0}
.hero-board{position:relative}
.float-card{position:absolute;padding:11px 14px;border-radius:12px;background:var(--float-bg);border:1px solid var(--line-2);backdrop-filter:blur(14px);font-size:.66rem;color:var(--muted);box-shadow:var(--shadow-sm);z-index:5;animation:floatY 7s ease-in-out infinite}
.float-card b{color:var(--gold);font-weight:600}
.float-card.f1{top:-18px;right:-8px}
.float-card.f2{bottom:34px;left:-26px;animation-delay:-3s}
.float-card.f3{bottom:-16px;right:12px;animation-delay:-5s}

/* ── board ────────────────────────────────────────────────────────────── */
.board-shell{position:relative;border-radius:var(--r-lg);padding:12px;background:linear-gradient(160deg,var(--board-frame-a),var(--board-frame-b));border:1px solid var(--line-2);box-shadow:var(--shadow);max-width:560px}
.board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);
  aspect-ratio:1/1;border-radius:10px;overflow:hidden;user-select:none;position:relative}
/* 1fr rows are load-bearing: with implicit auto rows the ranks size to their
   pieces (92px vs 50px) and the board stops being a square grid. */
.sq{position:relative;display:grid;place-items:center;min-width:0;min-height:0;cursor:pointer;transition:background .18s}
.sq.light{background:var(--light-sq)}
.sq.dark{background:var(--dark-sq)}
.sq .coord{position:absolute;font-size:.5rem;font-weight:700;letter-spacing:.04em;opacity:.55;pointer-events:none}
.sq .coord.file{bottom:2px;right:4px}
.sq .coord.rank{top:2px;left:4px}
.sq.light .coord{color:var(--coord-light)}
.sq.dark .coord{color:var(--coord-dark)}
.piece{font-size:clamp(20px,4.4vw,42px);line-height:1;pointer-events:none;transition:transform .12s}
/* An ivory body on the pale squares is only 1.3:1, so the piece reads by its
   ink rim. The stroke doubles the rim weight the shadows already give it. */
.piece.w{color:var(--piece-w);-webkit-text-stroke:.7px var(--piece-w-rim);paint-order:stroke fill;text-shadow:0 1px 0 var(--piece-w-rim),0 -1px 0 var(--piece-w-rim),1px 0 0 var(--piece-w-rim),-1px 0 0 var(--piece-w-rim),0 2px 5px var(--piece-w-shadow)}
.piece.b{color:var(--piece-b);text-shadow:0 1px 0 var(--piece-b-rim),0 2px 5px var(--piece-b-shadow)}
.sq.last::before{content:'';position:absolute;inset:0;background:var(--sq-last);mix-blend-mode:normal}
.sq.sel::before{content:'';position:absolute;inset:0;background:var(--sq-sel);box-shadow:inset 0 0 0 2px var(--sq-sel-ring)}
.sq.check::before{content:'';position:absolute;inset:0;background:var(--sq-check)}
.sq .dot{width:26%;height:26%;border-radius:50%;background:var(--sq-dot);position:absolute;pointer-events:none}
.sq .ring{position:absolute;inset:5%;border-radius:50%;border:3px solid var(--sq-ring);pointer-events:none}
.sq.hint-from::after,.sq.hint-to::after{content:'';position:absolute;inset:0;border:2px dashed var(--sq-hint);border-radius:2px}
.sq.best::after{content:'';position:absolute;inset:0;background:var(--sq-best);box-shadow:inset 0 0 0 2px var(--sq-best-ring)}
.sq:hover .piece{transform:translateY(-1px)}
.board.thinking{opacity:.92}
.board.thinking::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,var(--sq-think) 50%,transparent 70%);animation:think 1.2s linear infinite;pointer-events:none}
@keyframes think{from{transform:translateX(-100%)}to{transform:translateX(100%)}}

.board-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;flex-wrap:wrap}
.board-caption{display:flex;align-items:center;gap:8px;font-size:.66rem;color:var(--dim);letter-spacing:.08em;text-transform:uppercase}
.board-caption b{color:var(--text);font-weight:600}

/* eval bar */
.evalbar{width:13px;border-radius:6px;background:var(--evalbar-bg);overflow:hidden;position:relative;flex-shrink:0;border:1px solid var(--line)}
.evalbar .fill{position:absolute;left:0;right:0;bottom:0;background:var(--evalbar-fill);transition:height .5s var(--ease)}
.evalbar .mid{position:absolute;left:0;right:0;top:50%;height:1px;background:var(--violet);z-index:2}
.evalrow{display:flex;align-items:center;gap:16px}
.evalnum{font-family:var(--serif);font-size:2rem;line-height:1.1;letter-spacing:-.02em}

/* move list */
.movelist{max-height:260px;overflow-y:auto;border-radius:12px;border:1px solid var(--line);background:var(--panel-deep)}
.movelist table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:.72rem}
.movelist td{padding:5px 10px;border-bottom:1px solid var(--line)}
.movelist td.n{color:var(--dim);width:34px;text-align:right}
.movelist td.m{color:var(--text)}
.movelist td.m.cur{color:var(--gold);font-weight:600}
.movelist tr:hover td{background:var(--fill-1)}
.movelist .empty{padding:18px;text-align:center;color:var(--dim);font-size:.72rem;font-family:var(--sans)}

/* promotion picker */
.promo{position:absolute;inset:0;background:var(--overlay-bg);display:grid;place-items:center;z-index:20;border-radius:10px;backdrop-filter:blur(6px)}
.promo-inner{background:var(--surface-2);border:1px solid var(--line-2);border-radius:14px;padding:16px;text-align:center}
.promo-inner p{font-size:.62rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);margin-bottom:10px}
.promo-opts{display:flex;gap:8px}
.promo-opts button{width:54px;height:54px;border-radius:10px;border:1px solid var(--line);background:var(--promo-btn-bg);font-size:1.7rem;line-height:1;cursor:pointer;color:var(--piece-w);transition:all .2s}
.promo-opts button:hover{border-color:var(--gold);background:var(--gold-tint-2)}

/* mini board preview */
.mini{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);
  aspect-ratio:1/1;border-radius:8px;overflow:hidden;border:1px solid var(--line-2);
  box-shadow:var(--shadow-sm);contain:layout paint}
.mini span{display:grid;place-items:center;line-height:1;min-width:0;min-height:0;overflow:hidden}
.mini span.l{background:var(--light-sq)}
.mini span.d{background:var(--dark-sq)}
.mini i{font-style:normal;font-size:11px;line-height:1;display:block;
  paint-order:stroke fill;-webkit-text-stroke:.7px transparent}
.mini i.w{color:var(--piece-w);-webkit-text-stroke-color:var(--piece-w-rim)}
.mini i.b{color:var(--piece-b);-webkit-text-stroke-color:var(--piece-b-rim)}

/* ── stats band ───────────────────────────────────────────────────────── */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:26px 20px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-family:var(--serif);font-size:clamp(1.7rem,3vw,2.5rem);font-weight:400;letter-spacing:-.02em}
.stat span{font-size:.62rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}
.stat b .u{font-size:.5em;color:var(--gold);margin-left:2px}

/* ── tables ───────────────────────────────────────────────────────────── */
.tbl{width:100%;border-collapse:collapse;font-size:.8rem}
.tbl th{text-align:left;padding:11px 14px;font-size:.58rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);border-bottom:1px solid var(--line);font-weight:600}
.tbl td{padding:13px 14px;border-bottom:1px solid var(--line);color:var(--muted);vertical-align:top}
.tbl tr:last-child td{border-bottom:none}
.tbl td b{color:var(--text);font-weight:600}
.tbl tbody tr:hover td{background:var(--fill-faint)}
.tbl .mono{font-size:.72rem;color:var(--gold)}

/* ── tiers ────────────────────────────────────────────────────────────── */
.tiers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.tier{position:relative;padding:28px;border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(175deg,var(--surface-2),var(--surface));display:flex;flex-direction:column;gap:16px;transition:transform .4s var(--ease),border-color .4s}
.tier:hover{transform:translateY(-3px);border-color:var(--line-2)}
.tier.featured{border-color:var(--gold-line);background:linear-gradient(175deg,var(--gold-tint),var(--surface))}
.tier.featured::before{content:'Proposed';position:absolute;top:-9px;left:26px;font-size:.52rem;letter-spacing:.2em;text-transform:uppercase;background:var(--gold-fill-b);color:var(--on-gold);padding:3px 9px;border-radius:100px;font-weight:700}
.tier .name{font-family:var(--serif);font-size:1.3rem}
.tier .price{display:flex;align-items:baseline;gap:6px}
.tier .price b{font-family:var(--serif);font-size:2.1rem;font-weight:400}
.tier .price span{font-size:.66rem;color:var(--dim);letter-spacing:.08em}
.tier ul{list-style:none;display:flex;flex-direction:column;gap:9px;margin-top:4px}
.tier li{font-size:.78rem;color:var(--muted);display:flex;gap:9px;align-items:flex-start;line-height:1.55}
.tier li i{color:var(--ok);font-size:.62rem;margin-top:5px}
.tier .btn{margin-top:auto;justify-content:center}

/* ── timeline (stages) ────────────────────────────────────────────────── */
.timeline{position:relative;padding-left:28px}
.timeline::before{content:'';position:absolute;left:7px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--violet),var(--gold-line-2),transparent)}
.tl-item{position:relative;padding:0 0 26px 0}
.tl-item::before{content:'';position:absolute;left:-25px;top:7px;width:9px;height:9px;border-radius:50%;background:var(--surface-3);border:1px solid var(--line-2)}
.tl-item.done::before{background:var(--ok);border-color:var(--ok);box-shadow:0 0 0 4px var(--ok-tint)}
.tl-item.partial::before{background:var(--warn);border-color:var(--warn);box-shadow:0 0 0 4px var(--warn-tint)}
.tl-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:4px}
.tl-head .n{font-family:var(--mono);font-size:.62rem;color:var(--dim);letter-spacing:.1em}
.tl-head h3{font-family:var(--sans);font-size:.95rem;font-weight:600;letter-spacing:0}
.tl-item p{font-size:.8rem;color:var(--muted);line-height:1.7;max-width:72ch}
.tl-item ul{list-style:none;margin-top:8px;display:flex;flex-direction:column;gap:4px}
.tl-item ul li{font-size:.74rem;color:var(--dim);padding-left:14px;position:relative}
.tl-item ul li::before{content:'—';position:absolute;left:0;color:var(--violet);opacity:.7}

/* ── avatar cards ─────────────────────────────────────────────────────── */
.avatar-card{position:relative;padding:26px;border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(175deg,var(--surface-2),var(--surface));text-align:center;cursor:pointer;transition:all .4s var(--ease)}
.avatar-card:hover{transform:translateY(-4px);border-color:var(--gold-line)}
.avatar-card.sel{border-color:var(--gold-line-2);box-shadow:0 0 0 1px var(--gold-line),var(--shadow)}
.avatar-face{width:78px;height:78px;border-radius:50%;display:grid;place-items:center;font-size:2.1rem;margin:0 auto 14px;background:radial-gradient(circle at 30% 25%,var(--violet-tint-2),var(--surface-3));border:1px solid var(--line-2)}
.avatar-card h3{font-family:var(--sans);font-size:.95rem;font-weight:600;margin-bottom:3px}
.avatar-card .role{font-size:.66rem;color:var(--gold);letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px}
.avatar-card p{font-size:.76rem;color:var(--muted);line-height:1.65}

/* ── coach panel ──────────────────────────────────────────────────────── */
.panel{border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(175deg,var(--surface-2),var(--surface));padding:22px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.panel-head h3{font-family:var(--sans);font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.kv{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px solid var(--line);font-size:.74rem}
.kv:last-child{border-bottom:none}
.kv span{color:var(--dim)}
.kv b{color:var(--text);font-family:var(--mono);font-size:.72rem;font-weight:500;text-align:right;max-width:64%;overflow-wrap:anywhere}
.speak{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:12px;background:var(--violet-tint);border:1px solid var(--violet-line);font-size:.78rem;color:var(--text);line-height:1.6}
.speak i{color:var(--violet-2);flex-shrink:0}
.wave{display:flex;align-items:flex-end;gap:2px;height:18px}
.wave span{width:2px;background:var(--violet-2);border-radius:2px;height:4px}
.wave.on span{animation:wave 1s ease-in-out infinite}
.wave.on span:nth-child(2){animation-delay:.1s}.wave.on span:nth-child(3){animation-delay:.2s}
.wave.on span:nth-child(4){animation-delay:.3s}.wave.on span:nth-child(5){animation-delay:.4s}
@keyframes wave{0%,100%{height:4px}50%{height:16px}}

/* ── exercise runner ──────────────────────────────────────────────────── */
.runner{display:grid;grid-template-columns:minmax(0,540px) minmax(0,1fr);gap:clamp(18px,3vw,34px);align-items:start}
#pageContent{padding-bottom:72px}
.ex-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:12px}
.ex-title{font-family:var(--serif);font-size:1.15rem}
.feedback{padding:14px 16px;border-radius:12px;font-size:.82rem;line-height:1.65;border:1px solid var(--line);background:var(--fill-1);margin-top:12px}
.feedback.good{border-color:var(--ok-line);background:var(--ok-tint)}
.feedback.bad{border-color:var(--danger-line);background:var(--danger-tint)}
.feedback b{display:block;margin-bottom:3px;font-size:.66rem;letter-spacing:.16em;text-transform:uppercase}
.feedback.good b{color:var(--ok)} .feedback.bad b{color:var(--danger)}
.solution-line{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.solution-line span{font-family:var(--mono);font-size:.7rem;padding:3px 8px;border-radius:6px;background:var(--fill-2);border:1px solid var(--line);color:var(--muted)}

/* ── list rows ────────────────────────────────────────────────────────── */
.rows{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--surface)}
.row{display:flex;align-items:center;gap:14px;padding:15px 18px;border-bottom:1px solid var(--line);transition:background .25s,transform .25s;cursor:pointer}
.row:last-child{border-bottom:none}
.row:hover{background:var(--fill-1)}
.row .ico{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--fill-1);border:1px solid var(--line);color:var(--violet-2);font-size:.8rem;flex-shrink:0}
.row .body{flex:1;min-width:0}
.row .body b{display:block;font-size:.85rem;font-weight:600;margin-bottom:1px}
.row .body span{font-size:.72rem;color:var(--dim)}
.row .right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.row .chev{color:var(--dim);font-size:.66rem}

/* ── code block ───────────────────────────────────────────────────────── */
.code{position:relative;border-radius:12px;border:1px solid var(--line);background:var(--code-bg);padding:16px 18px;font-family:var(--mono);font-size:.72rem;line-height:1.8;color:var(--code-ink);overflow-x:auto;white-space:pre-wrap;word-break:break-word}
.code .k{color:var(--code-key)} .code .s{color:var(--code-str)} .code .c{color:var(--code-comment)} .code .n{color:var(--code-num)}
.code .copy{position:absolute;top:10px;right:10px;font-size:.58rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);background:var(--fill-2);border:1px solid var(--line);border-radius:6px;padding:4px 9px;cursor:pointer;font-family:var(--sans)}
.code .copy:hover{color:var(--gold);border-color:var(--gold-line)}
.keybox{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:10px;background:var(--code-bg);border:1px dashed var(--gold-line);font-family:var(--mono);font-size:.72rem;color:var(--gold);word-break:break-all}

/* ── progress bars ────────────────────────────────────────────────────── */
.bar{margin-bottom:12px}
.bar .lab{display:flex;justify-content:space-between;font-size:.72rem;margin-bottom:5px;color:var(--muted)}
.bar .lab b{color:var(--text);font-family:var(--mono);font-size:.7rem}
.bar .track{height:5px;border-radius:4px;background:var(--fill-3);overflow:hidden}
.bar .fill{height:100%;border-radius:4px;background:linear-gradient(90deg,var(--violet),var(--gold-fill-b));transition:width .8s var(--ease)}
.ring-stat{display:flex;align-items:center;gap:16px}
.donut{width:74px;height:74px;border-radius:50%;display:grid;place-items:center;position:relative;flex-shrink:0;background:conic-gradient(var(--gold) var(--p,0%),var(--fill-3) 0)}
.donut::before{content:'';position:absolute;inset:7px;border-radius:50%;background:var(--surface)}
.donut b{position:relative;font-family:var(--serif);font-size:1rem}

/* ── faq ──────────────────────────────────────────────────────────────── */
.faq{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--surface)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-q{width:100%;text-align:left;padding:18px 20px;background:none;border:none;color:var(--text);font-size:.88rem;font-weight:500;display:flex;justify-content:space-between;gap:14px;cursor:pointer;align-items:center}
.faq-q i{color:var(--dim);font-size:.7rem;transition:transform .3s}
.faq-item.open .faq-q i{transform:rotate(45deg);color:var(--gold)}
.faq-a{display:none;padding:0 20px 18px;font-size:.82rem;color:var(--muted);line-height:1.8;max-width:80ch}
.faq-item.open .faq-a{display:block}

/* ── modal ────────────────────────────────────────────────────────────── */
.modal-overlay{position:fixed;inset:0;z-index:600;background:var(--overlay-bg);backdrop-filter:blur(10px);display:none;align-items:center;justify-content:center;padding:20px}
.modal-overlay.show{display:flex}
.modal{width:min(620px,100%);max-height:88vh;overflow-y:auto;border-radius:var(--r-xl);border:1px solid var(--line-2);background:linear-gradient(175deg,var(--surface-2),var(--surface));padding:30px;position:relative;animation:modalIn .4s var(--ease) both}
.modal.wide{width:min(900px,100%)}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:none}}
.modal-close{position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:var(--fill-1);color:var(--muted);cursor:pointer;display:grid;place-items:center;font-size:.75rem;transition:all .25s}
.modal-close:hover{background:var(--danger-fill);border-color:var(--danger-fill);color:var(--on-danger)}
.modal h3{font-size:1.3rem;margin-bottom:6px}
.modal .sub{font-size:.8rem;color:var(--muted);margin-bottom:20px}

/* ── toast ────────────────────────────────────────────────────────────── */
.toast{position:fixed;bottom:84px;right:24px;z-index:700;padding:13px 20px;border-radius:12px;background:var(--surface-2);border:1px solid var(--ok-line);color:var(--text);font-size:.8rem;display:flex;align-items:center;gap:10px;transform:translateY(30px);opacity:0;pointer-events:none;transition:all .4s var(--ease);box-shadow:var(--shadow)}
.toast.show{transform:none;opacity:1}
.toast i{color:var(--ok)}

/* ── nav controls (ecosystem signature) ───────────────────────────────── */
.navCtl{position:fixed;bottom:0;left:0;right:0;z-index:350;padding:8px 0;background:linear-gradient(to top,rgba(var(--bg-rgb),.97),rgba(var(--bg-rgb),.62),transparent);backdrop-filter:blur(8px)}
.navCtl-inner{max-width:1400px;margin:0 auto;padding:0 clamp(16px,4vw,64px);display:flex;gap:8px;align-items:center;justify-content:center}
.navCtl button{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:10px;border:1px solid var(--line);background:rgba(var(--surface-rgb),.92);color:var(--muted);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;transition:all .25s}
.navCtl button:hover:not([disabled]){border-color:var(--gold);color:var(--gold)}
.navCtl button[disabled]{opacity:.32;cursor:not-allowed}
.navCtl .crumb{margin-left:auto;font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:40vw}
.navCtl .crumb b{color:var(--gold);font-weight:600}

/* ── footer ───────────────────────────────────────────────────────────── */
.footer{border-top:1px solid var(--line);padding:clamp(44px,6vw,72px) 0 26px;position:relative;overflow:hidden;margin-bottom:44px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer h4{font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);margin-bottom:14px;font-weight:600}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer li a{font-size:.8rem;color:var(--muted);cursor:pointer;transition:color .25s;position:relative}
.footer li a:hover{color:var(--gold)}
.footer .brandline{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:1.1rem;margin-bottom:12px}
.footer .brandline .glyph{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;background:linear-gradient(150deg,var(--violet),var(--violet-deep));font-size:.8rem}
.footer p{font-size:.8rem;color:var(--dim);line-height:1.75;max-width:34ch}
.footer-social{display:flex;gap:8px;margin-top:16px}
.footer-social a{width:32px;height:32px;border-radius:8px;border:1px solid var(--line);display:grid;place-items:center;color:var(--muted);font-size:.75rem;transition:all .25s;cursor:pointer}
.footer-social a:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}
.footer-word{font-family:var(--serif);font-size:clamp(3.4rem,13vw,10rem);line-height:.85;letter-spacing:-.04em;color:transparent;-webkit-text-stroke:1px var(--stroke-word);margin-top:34px;white-space:nowrap;overflow:hidden;user-select:none}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:.68rem;color:var(--dim)}

/* ── reveal ───────────────────────────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.07s}.reveal.d2{transition-delay:.14s}.reveal.d3{transition-delay:.21s}.reveal.d4{transition-delay:.28s}

/* ── auth ─────────────────────────────────────────────────────────────── */
.auth-wrap{min-height:100vh;place-items:center;padding:40px 20px}
.app.auth-wrap{display:none}
.app.auth-wrap.active{display:grid}
.auth-card{width:min(430px,100%);padding:36px;border-radius:var(--r-xl);border:1px solid var(--line-2);background:linear-gradient(175deg,var(--surface-2),var(--surface));position:relative;z-index:2}
.field{margin-bottom:16px}
.field label{display:block;font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin-bottom:6px}
.field input,.field select{width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--line);background:var(--field-bg);color:var(--text);font-family:var(--sans);font-size:.86rem;outline:none;transition:border-color .25s,box-shadow .25s}
.field input:focus,.field select:focus{border-color:var(--violet-line);box-shadow:0 0 0 3px var(--violet-tint-2)}
.field select option{background:var(--surface-2)}
.auth-alt{text-align:center;margin-top:14px;font-size:.76rem;color:var(--dim)}
.auth-alt a{color:var(--gold);cursor:pointer}

/* ── responsive ───────────────────────────────────────────────────────── */
@media(max-width:1100px){
  .g5{grid-template-columns:repeat(3,minmax(0,1fr))}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tiers{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:940px){
  .nav-links{display:none}
  .nav-burger{display:grid;place-items:center}
  .hero-inner{grid-template-columns:1fr}
  .hero-board{max-width:520px;margin:8px auto 0;width:100%}
  .runner{grid-template-columns:1fr}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
}
@media(max-width:640px){
  .g2,.g3,.g4,.g5{grid-template-columns:1fr}
  .tiers{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-note{gap:12px}
  .nav-user span{display:none}
  .navCtl .crumb{display:none}
  .float-card{display:none}
  .card{padding:20px}
  .section-head{margin-bottom:22px}
  /* phone nav: keep the bar on one line */
  .nav-inner{padding:12px 16px;gap:8px}
  .nav-user{display:none}
  .nav-logo small{display:none}
  .nav-logo{font-size:1.02rem;gap:8px}
  .nav-logo .glyph{width:27px;height:27px;font-size:.78rem}
  #navSignInBtn{padding:8px 13px;font-size:.58rem;letter-spacing:.08em}
  .nav-burger{width:34px;height:34px;flex-shrink:0}
  .h1{font-size:clamp(2rem,8.6vw,2.7rem)}
  .h1 br,.h2 br{display:none}
  .hero{padding-top:36px}
  .hero-note{display:grid;grid-template-columns:1fr 1fr;gap:14px 10px}
  .hero-note b{font-size:1.2rem}
  .hero-actions .btn{width:100%;justify-content:center}
  .board-shell{padding:8px}
  .piece{font-size:clamp(22px,9vw,34px)}
  .navCtl button{padding:8px 11px;font-size:.56rem;gap:5px}
  .modal{padding:22px}
  .section{padding:44px 0}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
  #intro{display:none}
  .reveal{opacity:1;transform:none}
}

/* ═══════════════════════════════════════════════════════════════════════════
   HIERARCHICAL NAVIGATION — node pages, contents blocks, depth ladder
   ═══════════════════════════════════════════════════════════════════════════ */
.node-head{max-width:940px;margin-bottom:8px}
.node-head .h2{margin:14px 0 16px}
.node-head .h2 em{font-style:italic;color:var(--gold)}
.node-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:4px}
.dchip{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.6rem;
  letter-spacing:.1em;text-transform:uppercase;color:var(--gold);
  padding:4px 10px;border-radius:99px;border:1px solid var(--gold-line);background:var(--gold-tint)}
.pathcode{font-size:.6rem;color:var(--dim);word-break:break-all;letter-spacing:0}
.navCtl .depthchip{font-family:var(--mono);font-size:.56rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--gold);padding:4px 9px;border-radius:99px;border:1px solid var(--gold-line);
  background:var(--gold-tint);white-space:nowrap;flex-shrink:0}
.navCtl .crumb-more{color:var(--dim);letter-spacing:.08em}

/* contents block — the drill-down affordance present on every node */
.childblock{margin-top:10px;padding:22px;border-radius:18px;border:1px solid var(--line-2);
  background:linear-gradient(170deg,var(--surface-2),var(--surface))}
.childblock-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.childblock-head h3{font-size:1.05rem;letter-spacing:-.01em}
.childblock-head .mono{color:var(--dim)}
.childgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.childgrid.wide{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.childcard{display:flex;gap:12px;align-items:flex-start;padding:13px 14px;border-radius:12px;
  border:1px solid var(--line);background:var(--fill-faint);cursor:pointer;
  transition:border-color .25s,background .25s,transform .25s}
.childcard:hover{border-color:var(--violet-line);background:var(--violet-tint);transform:translateY(-2px)}
.childcard .cn{font-family:var(--mono);font-size:.62rem;color:var(--gold);padding-top:2px;flex-shrink:0}
.childcard .cb{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}
.childcard .cb b{font-size:.8rem;font-weight:600;letter-spacing:-.005em}
.childcard .cb span{font-size:.7rem;color:var(--muted);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.childcard .ci{color:var(--dim);font-size:.72rem;flex-shrink:0;padding-top:3px}
.childcard:hover .ci{color:var(--violet)}
.leafnote{margin-top:12px;padding:16px 18px;border-radius:12px;border:1px dashed var(--line-2);
  font-size:.76rem;color:var(--muted);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.leafnote i{color:var(--gold)}
.leafnote a{color:var(--gold);cursor:pointer;text-decoration:underline;text-underline-offset:3px}

/* key/value grid used on record and stage pages */
.kvgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:12px;overflow:hidden}
.kvrow{display:flex;flex-direction:column;gap:4px;padding:12px 14px;background:var(--surface)}
.kvrow span{font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.kvrow b{font-size:.82rem;font-weight:600;word-break:break-word}

/* solution ply chips */
.solution-line .ply{display:inline-flex;align-items:baseline;gap:7px;padding:5px 11px;border-radius:8px;
  background:var(--fill-2);border:1px solid var(--line)}
.solution-line .ply b{font-family:var(--sans);font-size:.78rem;color:var(--text);font-weight:600}
.solution-line .ply span{font-family:var(--mono);font-size:.58rem;color:var(--dim);padding:0;border:0;background:none}

/* depth ladder */
.ladder{display:flex;flex-direction:column;gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:14px;overflow:hidden}
.ladder-row{display:grid;grid-template-columns:38px 88px minmax(0,1fr) 22px;gap:12px;align-items:center;
  padding:10px 14px;background:var(--surface);cursor:pointer;transition:background .2s}
.ladder-row:hover{background:var(--violet-tint)}
.ladder-row.here{background:var(--gold-tint)}
.ladder-row .ln{font-family:var(--mono);font-size:.66rem;color:var(--gold)}
.ladder-row .lk{color:var(--dim);letter-spacing:.08em;text-transform:uppercase;font-size:.54rem}
.ladder-row .lt{font-size:.78rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ladder-row .li{color:var(--dim);font-size:.62rem}
.ladder-row:hover .li{color:var(--violet)}
.ladder-row.here .lt{color:var(--gold);font-weight:600}

@media(max-width:900px){
  .childgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .childgrid.wide{grid-template-columns:1fr}
}
@media(max-width:640px){
  .childgrid{grid-template-columns:1fr}
  .kvgrid{grid-template-columns:1fr}
  .childblock{padding:16px}
  .ladder-row{grid-template-columns:30px 62px minmax(0,1fr);gap:8px}
  .ladder-row .li{display:none}
  .navCtl .depthchip{display:none}
  .node-meta .pathcode{display:none}
}
/* an odd trailing key/value pair fills the row instead of leaving a dead cell */
.kvrow:last-child:nth-child(odd){grid-column:span 2}
@media(max-width:640px){ .kvrow:last-child:nth-child(odd){grid-column:span 1} }
/* two-panel runner: stacks on phones without fighting the base rule */
.runner.split{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}
@media(max-width:640px){ .runner.split{grid-template-columns:1fr} }
/* mini-board tiles inside tree panels must never stretch to the panel width */
.minigrid{display:flex;gap:14px;flex-wrap:wrap}
.miniitem{width:104px;flex-shrink:0}
.miniitem .mini{width:104px;height:104px}
.miniitem .tiny{line-height:1.35}

/* level cards advertise that they navigate */
.card-go{margin-top:12px;display:inline-flex;align-items:center;gap:7px;font-size:.58rem;
  letter-spacing:.13em;text-transform:uppercase;color:var(--gold);opacity:.85;
  transition:opacity .25s,transform .25s}
.card:hover .card-go{opacity:1;transform:translateX(3px)}
.card:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.chip-link{cursor:pointer;display:inline-flex;align-items:center;gap:6px;
  transition:border-color .25s,color .25s,background .25s}
.chip-link i{font-size:.52rem;opacity:.6}
.chip-link:hover{border-color:var(--gold-line-2);color:var(--gold);background:var(--gold-tint)}
.chip-link:hover i{opacity:1}

/* ═══════════════════════════════════════════════════════════════════════════
   CREAM PAPER — what a token swap alone cannot express
   ═══════════════════════════════════════════════════════════════════════════ */

/* interface theme switch, always visible in the nav */
.nav-theme{width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--muted);cursor:pointer;display:grid;place-items:center;
  font-size:.78rem;flex-shrink:0;transition:color .25s,border-color .25s,background .25s}
.nav-theme:hover{color:var(--gold);border-color:var(--gold-line);background:var(--gold-tint)}
.nav-theme:active{transform:scale(.95)}
.nav-theme:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* a card on cream needs a hairline and a whisper of shade to read as paper */
.card,.tier,.avatar-card,.panel,.childblock,.auth-card,.modal,.rows,.faq,.board-shell{box-shadow:var(--card-rest)}
.card:hover,.tier:hover,.avatar-card:hover{box-shadow:var(--shadow)}

/* a full-bleed cream page looks flat without a warm vignette */
body::after{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(120% 80% at 50% -12%,rgba(203,166,92,.12),transparent 62%),
             radial-gradient(90% 70% at 100% 102%,rgba(124,90,30,.07),transparent 66%)}
html[data-theme="dark"] body::after{display:none}

/* gold display type: the big serif italics carry the accent, so they can sit
   a step lighter than the gold used for small text and still clear 3:1 */
.h1 em,.h2 em,.hero h1 em,.node-head .h2 em{color:var(--gold-2)}

/* tables and rows read better with a warm zebra on paper than with borders alone */
.tbl tbody tr:nth-child(even) td{background:var(--fill-faint)}

/* the board frame is wood in both themes; on cream give it a lit top edge.
   A 1px inset sits inside the 12px frame padding, so the board itself is untouched. */
.board-shell{box-shadow:var(--card-rest),inset 0 1px 0 var(--frame-hi)}
html[data-theme="dark"] .board-shell{box-shadow:var(--card-rest)}

/* code on paper: keep the block lighter than the card it sits in */
.code{box-shadow:inset 0 0 0 1px var(--line)}


/* ═══ SPORTZFY ARRANGEMENT ═══════════════════════════════════════════════
   Chips, featured round, desk cards, cup rows, tables and coverage — the
   front-page arrangement every Sihi sport surface shares.
   ═══════════════════════════════════════════════════════════════════════ */

.chiprail{display:flex;gap:8px;overflow-x:auto;padding:18px 0 4px;scrollbar-width:none}
.chiprail::-webkit-scrollbar{display:none}
.chiprail .chip{flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;padding:7px 14px;
  border-radius:100px;border:1px solid var(--line);background:var(--surface-2);
  color:var(--muted);font-size:.68rem;font-weight:600;letter-spacing:.03em;
  cursor:pointer;white-space:nowrap;transition:border-color .3s,color .3s,background .3s}
.chiprail .chip:hover{border-color:var(--gold-line);color:var(--gold)}
.chiprail .chip.on{background:var(--violet-tint-2);border-color:var(--violet-line);color:var(--violet)}

.feature{margin-top:26px;padding:24px clamp(18px,3vw,30px);border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--violet-tint),var(--gold-tint-2) 55%,var(--surface-2));
  border:1px solid var(--line);box-shadow:var(--card-rest)}
.feature-top{display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:.6rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--dim)}
.feature-top .live{display:inline-flex;align-items:center;gap:7px;color:var(--danger);letter-spacing:.14em}
.feature-top .live i{width:7px;height:7px;border-radius:50%;background:var(--danger);
  box-shadow:0 0 0 0 rgba(179,20,46,.45);animation:arenaPulse 1.8s infinite}
@keyframes arenaPulse{70%{box-shadow:0 0 0 7px rgba(179,20,46,0)}100%{box-shadow:0 0 0 0 rgba(179,20,46,0)}}
.feature-teams{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px}
.crest{flex:1 1 0;text-align:center;min-width:0}
.crest .mark{width:60px;height:60px;margin:0 auto;border-radius:16px;display:grid;place-items:center;
  font-family:var(--serif);font-size:1.35rem;color:var(--gold);
  background:var(--surface);border:1px solid var(--gold-line);box-shadow:inset 0 1px 0 var(--frame-hi)}
.crest .name{margin-top:10px;font-weight:600;font-size:.9rem;line-height:1.25}
.crest .sub{margin-top:3px;font-size:.58rem;letter-spacing:.16em;text-transform:uppercase;color:var(--dim)}
.score{flex:0 0 auto;text-align:center}
.score b{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(1.7rem,3.4vw,2.5rem);
  line-height:1;letter-spacing:-.01em;white-space:nowrap}
.score span{display:block;margin-top:7px;font-size:.56rem;letter-spacing:.2em;text-transform:uppercase;color:var(--dim)}
.feature-note{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-size:.8rem;line-height:1.65;color:var(--muted);max-width:72ch}

.news-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.news{--tone:var(--violet);position:relative;display:flex;flex-direction:column;gap:9px;
  padding:22px;border-radius:var(--r-lg);background:linear-gradient(170deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);box-shadow:var(--card-rest)}
.news::before{content:'';position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--tone);opacity:.85}
.news.t-gold{--tone:var(--gold)}
.news.t-ok{--tone:var(--ok)}
.news.t-info{--tone:var(--info)}
.news .kicker{font-size:.56rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--tone)}
.news h3{font-family:var(--serif);font-weight:400;font-size:1.1rem;line-height:1.32}
.news p{font-size:.78rem;line-height:1.66;color:var(--muted)}
.news .date{margin-top:auto;padding-top:10px;font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}

.cups{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.cup{display:grid;grid-template-columns:170px 1fr auto;gap:18px;align-items:center;
  padding:16px 2px;border-bottom:1px solid var(--line)}
.cup .when{font-size:.64rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--gold)}
.cup .name{display:flex;flex-direction:column;gap:3px;font-weight:600;font-size:.92rem}
.cup .fmt{font-weight:400;font-size:.7rem;color:var(--dim);letter-spacing:0}
.cup .badge{justify-self:end}

.coverage{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-top:12px}
.coverage .chan{display:flex;flex-direction:column;gap:3px;padding:14px 16px;border-radius:var(--r-sm);
  background:var(--surface-2);border:1px solid var(--line)}
.coverage .chan b{font-size:.82rem;font-weight:600}
.coverage .chan span{font-size:.66rem;color:var(--dim)}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface-2)}
.table{width:100%;border-collapse:collapse;font-size:.8rem;min-width:520px}
.table caption{caption-side:top;text-align:left;padding:18px 20px 6px;font-family:var(--serif);font-size:1.05rem}
.table th{font-size:.56rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);
  text-align:right;padding:10px 14px;border-bottom:1px solid var(--line-2)}
.table th:nth-child(1),.table th:nth-child(2){text-align:left}
.table td{padding:11px 14px;text-align:right;border-bottom:1px solid var(--line)}
.table tr:last-child td{border-bottom:none}
.table td:nth-child(1),.table td:nth-child(2){text-align:left}
.table .pos{font-family:var(--mono);font-size:.72rem;color:var(--dim)}
.table .club{font-weight:600}
.table .pts{font-family:var(--serif);font-size:1rem;color:var(--gold)}
/* The wrapper is ice-blue on this surface, so a gold wash over it muddies to
   grey. A white wash lifts the top two rows instead. */
.table tr.top td{background:rgba(255,255,255,.48)}
.table tr.top .pos{color:var(--gold)}

@media (max-width:720px){
  .cup{grid-template-columns:1fr auto;gap:8px 14px}
  .cup .when{grid-column:1 / -1}
  .feature-teams{gap:8px}
  .crest .mark{width:48px;height:48px;border-radius:13px;font-size:1.1rem}
  .crest .name{font-size:.78rem}
}