/* ============================================================
   styles.css — Tempo theme · "Learning chess at Your Own Pace"
   Light/calm by default; dark mode via html.dark-mode
   ============================================================ */
:root{
  /* surfaces & text (LIGHT / Tempo default) */
  --bg:#F8F7F4; --panel:#FFFFFF; --panel2:#FBFAF7; --panel3:#F2F0EA;
  --border:#ECEAE3; --border2:#E4E1D8;
  --text:#1C1C1C; --muted:#6B7280; --faint:#9AA0A8;
  /* brand accent (slate blue) */
  --accent:#334E68; --accent2:#28415A;
  /* status colours (calm) */
  --good:#3F8F5B; --bad:#C2554F; --warn:#B98328; --info:#3E6E9E;
  /* board squares + highlights (cream) */
  --light:#ECE7DA; --dark:#C2B49A; --hi:#D8D08C; --hi2:#C2B469;
  /* soft shadow + radius tokens */
  --shadow-sm:0 1px 2px rgba(28,28,28,.05);
  --shadow-md:0 18px 40px -20px rgba(28,28,28,.18);
  --shadow-lg:0 24px 60px -24px rgba(28,28,28,.20);
  --serif:'Spectral',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --sq: min(76px, calc((100vw - 120px) / 8));
}
/* ---------- DARK MODE override ---------- */
html.dark-mode{
  --bg:#0d1117; --panel:#161b22; --panel2:#1c2333; --panel3:#222b3d;
  --border:#283041; --border2:#283041;
  --text:#e6e8ec; --muted:#9aa4b2; --faint:#6b7585;
  --accent:#8b5cf6; --accent2:#a78bfa;
  --good:#5dd47f; --bad:#e5707e; --warn:#e8c267; --info:#6fb3ff;
  --shadow-sm:0 1px 2px rgba(0,0,0,.3);
  --shadow-md:0 8px 24px rgba(0,0,0,.35);
  --shadow-lg:0 20px 60px rgba(0,0,0,.5);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--sans);background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
h1,h2,h3,.brand-name{font-family:var(--serif);font-weight:500;letter-spacing:-0.01em;}
a{color:var(--accent);text-decoration:none;}
button{font-family:inherit;}
::selection{background:rgba(51,78,104,.14);}

/* ---------- top bar ---------- */
.topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px;padding:12px 28px;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);position:sticky;top:0;z-index:50;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:500;font-size:1.3rem;letter-spacing:-0.01em;color:var(--text);text-decoration:none;}
.brand img.logo{width:26px;height:26px;display:block;}
.mainnav{display:flex;gap:4px;justify-self:center;}
.mainnav a{font-size:0.92rem;color:var(--muted);padding:7px 13px;border-radius:9px;transition:all 0.16s;}
.mainnav a:hover{color:var(--text);background:var(--panel3);}
.mainnav a.active{color:var(--text);background:var(--panel3);box-shadow:inset 0 -2px 0 var(--accent);}
.topbar-right{display:flex;align-items:center;gap:9px;justify-self:end;}
/* keep .spacer for any leftover uses */
.topbar .spacer{display:none;}
.icon-btn{background:var(--panel2);border:1px solid var(--border);color:var(--muted);width:34px;height:34px;border-radius:8px;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:all 0.14s;}
.icon-btn:hover{color:var(--text);border-color:var(--accent);}
.back-link{font-size:0.85rem;color:var(--muted);}
.back-link:hover{color:var(--text);}
.eng-pill{display:flex;align-items:center;gap:7px;font-size:0.78rem;color:var(--muted);background:var(--panel2);border:1px solid var(--border);padding:5px 11px;border-radius:20px;cursor:pointer;}
.eng-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--bad);box-shadow:0 0 6px var(--bad);}
.eng-pill.on{color:var(--good);} .eng-pill.on .dot{background:var(--good);box-shadow:0 0 6px var(--good);}
/* landing-page nav actions */
.btn-nav-signin{font-size:0.88rem;color:var(--muted);padding:7px 14px;border-radius:9px;text-decoration:none;transition:all 0.16s;white-space:nowrap;}
.btn-nav-signin:hover{color:var(--text);background:var(--panel3);}
.btn-nav-start{font-size:0.88rem !important;padding:8px 18px !important;border-radius:9px !important;white-space:nowrap;}

/* ---------- landing ---------- */
.wrap{max-width:1140px;margin:0 auto;padding:20px 28px 40px;}
.hero h1{font-family:var(--serif);font-weight:400;font-size:2rem;line-height:1.08;margin-bottom:8px;}
.hero p{color:var(--muted);margin-bottom:16px;font-size:0.95rem;line-height:1.6;max-width:620px;}
.section-title{font-size:0.78rem;text-transform:uppercase;letter-spacing:0.12em;font-weight:600;color:var(--accent);margin:34px 0 14px;}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;}
.op-card{display:block;background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:18px 20px;transition:all 0.2s;box-shadow:var(--shadow-sm);}
.op-card:hover{border-color:var(--border2);transform:translateY(-3px);box-shadow:var(--shadow-md);}
.op-card .name{font-size:1.08rem;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px;}
.op-card .eco{font-size:0.7rem;color:var(--faint);border:1px solid var(--border);border-radius:5px;padding:1px 6px;}
.op-card .side{font-size:0.7rem;margin-left:auto;color:var(--muted);}
.op-card .blurb{font-size:0.82rem;color:var(--muted);margin-top:8px;line-height:1.5;}
.big-card{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:24px;display:flex;align-items:center;gap:18px;transition:all 0.22s;box-shadow:var(--shadow-sm);}
.big-card:hover{border-color:var(--border2);transform:translateY(-4px);box-shadow:var(--shadow-md);}
.big-card .ic{font-size:2.1rem;}
.big-card .name{font-size:1.2rem;font-weight:700;}
.big-card .blurb{font-size:0.85rem;color:var(--muted);margin-top:4px;}

/* ---------- board page layout ---------- */
.board-page{display:flex;gap:18px;align-items:flex-start;justify-content:center;padding:20px;flex-wrap:wrap;}
.eval-bar{width:20px;height:calc(var(--sq) * 8);background:var(--dark);border:1px solid var(--border2);border-radius:5px;position:relative;overflow:hidden;flex:none;}
.eval-fill{position:absolute;bottom:0;left:0;right:0;height:calc(var(--frac,0.5)*100%);background:linear-gradient(#fbfaf7,#ece7da);transition:height 0.35s ease,width 0.35s ease;}
.eval-label{position:absolute;top:4px;left:0;right:0;text-align:center;font-size:0.6rem;font-weight:700;color:var(--text);mix-blend-mode:normal;font-variant-numeric:tabular-nums;z-index:2;}
.eval-label.neg{}
.board-col{display:flex;flex-direction:column;align-items:center;gap:10px;}
.mode-pill{font-size:0.68rem;font-weight:700;letter-spacing:0.04em;text-transform:uppercase;padding:3px 11px;border-radius:20px;border:1px solid var(--border);background:var(--panel2);}
.mode-pill.casual{color:var(--good);border-color:var(--good);}
.mode-pill.rated{color:var(--bad);border-color:var(--bad);}
.mode-pill:empty{display:none;}
.board-outer{display:flex;align-items:stretch;}
.rank-col{display:flex;flex-direction:column;}
.rank-col span{height:var(--sq);width:18px;display:flex;align-items:center;justify-content:center;font-size:0.62rem;color:var(--faint);font-weight:bold;user-select:none;}
.board{display:grid;grid-template-columns:repeat(8,var(--sq));grid-template-rows:repeat(8,var(--sq));border:3px solid var(--dark);border-radius:7px;box-shadow:var(--shadow-lg);}
.file-row{display:flex;margin-left:18px;}
.file-row span{width:var(--sq);text-align:center;font-size:0.62rem;color:var(--faint);font-weight:bold;margin-top:3px;user-select:none;}
.sq{width:var(--sq);height:var(--sq);display:flex;align-items:center;justify-content:center;position:relative;cursor:pointer;user-select:none;}
.sq.light{background:var(--light);} .sq.dark{background:var(--dark);}
.sq.selected{outline:3px solid #5aa7ff;outline-offset:-3px;background:rgba(90,167,255,0.30)!important;}
.sq.last.light{background:var(--hi)!important;} .sq.last.dark{background:var(--hi2)!important;}
.sq.hint{outline:4px solid rgba(167,139,250,0.9);outline-offset:-4px;}
.sq.valid::after{content:'';position:absolute;width:calc(var(--sq)*0.34);height:calc(var(--sq)*0.34);border-radius:50%;background:rgba(0,0,0,0.22);pointer-events:none;}
.sq.valid.cap{outline:4px solid rgba(0,0,0,0.22);outline-offset:-4px;}
.sq.valid.cap::after{display:none;}
.piece{width:calc(var(--sq)*0.92);height:calc(var(--sq)*0.92);background-size:contain;background-repeat:no-repeat;background-position:center;cursor:grab;user-select:none;-webkit-user-drag:none;will-change:transform;}
.piece:active{cursor:grabbing;}
.drag-ghost{position:fixed;pointer-events:none;z-index:9999;background-size:contain;background-repeat:no-repeat;background-position:center;transform:translate(-50%,-54%) scale(1.06);filter:drop-shadow(0 6px 8px rgba(0,0,0,0.45));}
.illegal-flash{animation:rflash 0.35s;}
@keyframes rflash{0%,100%{}45%{box-shadow:inset 0 0 30px rgba(255,60,60,0.5);}}

/* controls under board */
.controls{display:flex;gap:7px;flex-wrap:wrap;justify-content:center;}
.btn{background:var(--panel2);border:1px solid var(--border);color:var(--text);padding:8px 13px;border-radius:7px;cursor:pointer;font-size:0.82rem;font-weight:600;transition:all 0.15s;}
.btn:hover{border-color:var(--accent);background:var(--panel3);}
.btn:disabled{opacity:0.35;cursor:default;}
.btn.accent{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn.accent:hover{background:var(--accent2);border-color:var(--accent2);}
.btn.nav{min-width:42px;font-size:0.95rem;}
.turn-ind{font-size:0.78rem;color:var(--muted);text-align:center;}
select.sel{background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:7px 8px;font-size:0.8rem;}

/* mode toggle */
.mode-toggle{display:flex;background:var(--panel2);border:1px solid var(--border);border-radius:8px;overflow:hidden;}
.mode-toggle button{background:none;border:none;color:var(--muted);padding:8px 16px;cursor:pointer;font-size:0.84rem;font-weight:600;}
.mode-toggle button.on{background:var(--accent);color:#fff;}

/* ---------- coach panel ---------- */
.coach{width:340px;max-width:100%;display:flex;flex-direction:column;gap:12px;}
.coach .card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px 15px;}
.coach h3{font-size:0.75rem;text-transform:uppercase;letter-spacing:0.8px;color:var(--faint);margin-bottom:10px;display:flex;align-items:center;gap:7px;}
.coach-msgs{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto;}
.coach-msg{background:var(--panel2);border:1px solid var(--border);border-left:3px solid var(--faint);border-radius:8px;padding:9px 11px;font-size:0.84rem;line-height:1.5;color:var(--text);}
.coach-msg b{color:var(--text);}
.coach-msg.good{border-left-color:var(--good);} .coach-msg.best{border-left-color:var(--good);}
.coach-msg.inacc{border-left-color:var(--warn);}
.coach-msg.mistake{border-left-color:#e89a4f;} .coach-msg.blunder{border-left-color:var(--bad);}
.coach-msg.reply{border-left-color:var(--info);color:var(--muted);}
.coach-msg.hint{border-left-color:var(--accent2);}
.coach-msg.done{border-left-color:var(--accent);background:var(--panel3);}
.coach-msg.brilliant{border-left-color:#1baca6;} .coach-msg.great{border-left-color:#5c8bb0;}
.coach-msg.book{border-left-color:#9b7653;} .coach-msg.excellent{border-left-color:#4fa876;}
.coach-msg.inaccuracy{border-left-color:var(--warn);} .coach-msg.miss{border-left-color:#e8734f;}
.movelist{font-size:0.84rem;line-height:1.95;color:var(--muted);word-spacing:1px;max-height:200px;overflow-y:auto;}
.movelist .mv{cursor:pointer;padding:1px 4px;border-radius:4px;}
.movelist .mv:hover{background:var(--panel2);}
.movelist .mv.cur{background:var(--accent);color:#fff;}
.movelist .mvnum{color:var(--faint);}
.movelist .tag{font-size:0.7rem;font-weight:700;margin-left:2px;}
.tag.best,.tag.good{color:var(--good);} .tag.inacc{color:var(--warn);} .tag.mistake{color:#e89a4f;} .tag.blunder{color:var(--bad);}
.tag.brilliant{color:#1baca6;} .tag.great{color:#5c8bb0;} .tag.book{color:#9b7653;}
.tag.excellent{color:#4fa876;} .tag.inaccuracy{color:var(--warn);} .tag.miss{color:#e8734f;}
/* ---- Game Report (move ratings + accuracy summary) ---- */
.report-head{display:flex;justify-content:space-between;font-size:0.86rem;font-weight:600;color:var(--text);margin-bottom:2px;}
.report-acc-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.report-acc{font-size:1.5rem;font-weight:700;color:var(--accent);width:64px;text-align:center;}
.report-acc-label{font-size:0.68rem;color:var(--muted);text-transform:uppercase;letter-spacing:0.04em;}
.report-table{display:flex;flex-direction:column;gap:0;}
.report-row{display:grid;grid-template-columns:36px 1fr 36px;align-items:center;font-size:0.8rem;padding:4px 0;border-bottom:1px solid var(--border);color:var(--muted);}
.report-row:last-child{border-bottom:none;}
.report-count{text-align:center;font-weight:700;color:var(--text);}
.report-cat{display:flex;align-items:center;gap:6px;justify-content:center;text-align:center;}
.report-note{margin-top:9px;font-size:0.7rem;color:var(--faint);line-height:1.4;}
.tip{background:color-mix(in srgb,var(--good) 12%,var(--panel));border-left:3px solid var(--good);border-radius:8px;padding:10px 12px;font-size:0.8rem;color:var(--text);line-height:1.5;}

/* player plates (PGN metadata) */
.plate{width:calc(var(--sq)*8);max-width:100%;display:flex;align-items:center;gap:8px;font-size:0.88rem;color:var(--text);padding:3px 2px;}
.plate .pc{font-size:1.15rem;line-height:1;}
.plate .pc.wc{color:#f2eede;text-shadow:0 0 2px #000;} .plate .pc.bc{color:#222;text-shadow:0 0 2px #aaa;}
.plate .elo{color:var(--muted);font-size:0.78rem;}
.plate:empty{display:none;}
.game-meta{font-size:0.76rem;color:var(--muted);}
.game-meta:empty{display:none;}
.coach-ava{font-size:1.05rem;}
.saved-row{display:flex;gap:6px;margin-bottom:6px;align-items:center;}
.saved-del{background:color-mix(in srgb,var(--bad) 10%,var(--panel));border:1px solid color-mix(in srgb,var(--bad) 35%,var(--panel));color:var(--bad);width:30px;height:32px;border-radius:6px;cursor:pointer;flex:none;}
.saved-del:hover{background:var(--bad);color:#fff;border-color:var(--bad);}
.saved-empty{font-size:0.8rem;color:var(--faint);}

/* analyze page */
.analyze-input{display:flex;flex-direction:column;gap:10px;}
.analyze-input textarea{width:100%;min-height:120px;background:var(--panel2);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:10px;font-family:ui-monospace,Menlo,monospace;font-size:0.8rem;resize:vertical;}
.analyze-input .row{display:flex;gap:9px;align-items:center;flex-wrap:wrap;}
.file-btn{position:relative;overflow:hidden;}
.file-btn input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;}
.progress{height:6px;background:var(--panel2);border-radius:4px;overflow:hidden;}
.progress > div{height:100%;background:var(--accent);width:0;transition:width 0.2s;}

/* promotion modal */
.promo-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.65);z-index:10000;align-items:center;justify-content:center;}
.promo-modal.show{display:flex;}
.promo-box{background:var(--panel);border:2px solid var(--accent);border-radius:10px;padding:16px 20px;}
.promo-box p{color:var(--accent2);font-size:0.82rem;margin-bottom:10px;text-align:center;}
.promo-row{display:flex;gap:10px;}
.promo-opt{width:var(--sq);height:var(--sq);border-radius:8px;border:2px solid transparent;cursor:pointer;background-size:contain;background-repeat:no-repeat;background-position:center;background-color:var(--panel2);}
.promo-opt:hover{border-color:var(--accent);background-color:rgba(139,92,246,0.22);}

/* hide coordinates when disabled in settings */
body.no-coords .rank-col,body.no-coords .file-row{display:none;}

/* ---------- settings modal ---------- */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:10001;align-items:flex-start;justify-content:center;padding:40px 16px;overflow-y:auto;}
.modal-overlay.show{display:flex;}
.modal-box{background:var(--panel);border:1px solid var(--border);border-radius:14px;width:100%;max-width:460px;box-shadow:0 20px 60px rgba(0,0,0,0.5);}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--border);}
.modal-head h3{font-size:1.05rem;font-weight:700;}
.modal-x{background:var(--panel2);border:1px solid var(--border);color:var(--muted);width:30px;height:30px;border-radius:7px;cursor:pointer;}
.modal-x:hover{color:var(--text);border-color:var(--bad);}
.modal-body{padding:16px 18px;}
.set-group{margin-bottom:20px;}
.set-label{font-size:0.74rem;text-transform:uppercase;letter-spacing:0.8px;color:var(--faint);margin-bottom:10px;}
.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;}
.theme-card{background:var(--panel2);border:1px solid var(--border);border-radius:9px;padding:8px;cursor:pointer;color:var(--muted);transition:all 0.14s;}
.theme-card:hover{border-color:var(--accent);color:var(--text);}
.theme-card.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);color:var(--text);}
.theme-swatch{display:grid;grid-template-columns:1fr 1fr;width:100%;aspect-ratio:1/1;border-radius:6px;overflow:hidden;margin-bottom:6px;}
.theme-swatch span{display:block;width:100%;height:100%;}
.theme-name{font-size:0.72rem;text-align:center;line-height:1.2;}
.piece-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;}
.piece-card{background:var(--panel2);border:1px solid var(--border);border-radius:9px;padding:8px;cursor:pointer;color:var(--muted);transition:all 0.14s;}
.piece-card:hover{border-color:var(--accent);color:var(--text);}
.piece-card.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);color:var(--text);}
.piece-prev{display:flex;justify-content:center;gap:2px;background:var(--dark);border-radius:6px;padding:5px;margin-bottom:6px;}
.piece-prev img{width:34px;height:34px;}
.piece-name{font-size:0.76rem;text-align:center;}
.set-toggle{display:flex;align-items:center;justify-content:space-between;padding:9px 0;font-size:0.9rem;color:var(--text);cursor:pointer;border-top:1px solid var(--border);}
.set-toggle input{width:18px;height:18px;accent-color:var(--accent);cursor:pointer;}

/* ---------- landing: groups, mode cards, progress ---------- */
.section-sub{font-size:0.85rem;color:var(--muted);margin:-4px 0 14px;line-height:1.5;}
.mode-cards{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));}
.group-title{font-size:0.92rem;font-weight:700;color:var(--text);margin:22px 0 10px;display:flex;align-items:center;gap:8px;}
.group-title::before{content:'';width:4px;height:15px;background:var(--accent);border-radius:3px;}
.op-prog{display:flex;align-items:center;gap:8px;margin-top:11px;}
.op-prog-bar{flex:1;height:6px;background:var(--panel2);border-radius:4px;overflow:hidden;}
.op-prog-bar>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:4px;transition:width .3s;}
.op-prog-txt{font-size:0.72rem;color:var(--faint);white-space:nowrap;}

/* ---------- opening head: title, eco, progress, mode bar ---------- */
.op-head{padding:16px 22px 0;display:flex;flex-direction:column;gap:12px;}
.op-head-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.op-title{font-size:1.35rem;}
.op-head .eco{font-size:0.72rem;color:var(--faint);border:1px solid var(--border);border-radius:5px;padding:1px 6px;}
.op-progress{display:flex;align-items:center;gap:8px;margin-left:auto;min-width:160px;max-width:260px;flex:1;}
.op-progress .op-prog-bar{height:7px;}
.modebar{display:inline-flex;background:var(--panel2);border:1px solid var(--border);border-radius:9px;overflow:hidden;flex-wrap:wrap;width:fit-content;max-width:100%;}
.modebar button{background:none;border:none;border-right:1px solid var(--border);color:var(--muted);padding:9px 15px;cursor:pointer;font-size:0.84rem;font-weight:600;transition:all .14s;}
.modebar button:last-child{border-right:none;}
.modebar button:hover{color:var(--text);background:var(--panel3);}
.modebar button.on{background:var(--accent);color:#fff;}
.mode-aux{min-height:20px;display:flex;align-items:center;}
.aux-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.aux-lbl{font-size:0.78rem;color:var(--muted);}
.aux-stat{font-size:0.82rem;color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;}
.aux-hint{font-size:0.78rem;color:var(--faint);}
.miniseg{display:inline-flex;border:1px solid var(--border);border-radius:7px;overflow:hidden;}
.miniseg button{background:var(--panel2);border:none;border-right:1px solid var(--border);color:var(--muted);padding:6px 13px;cursor:pointer;font-size:0.8rem;font-weight:600;}
.miniseg button:last-child{border-right:none;}
.miniseg button.on{background:var(--accent);color:#fff;}

/* share row + small buttons + strength label */
.share-row{align-items:center;}
.btn.sm{padding:6px 10px;font-size:0.76rem;font-weight:600;}
.strength-label{font-size:0.76rem;color:var(--muted);display:flex;align-items:center;gap:6px;margin-left:auto;}
.coach-msg code{font-size:0.74rem;background:var(--panel3);padding:1px 4px;border-radius:4px;color:var(--accent);word-break:break-all;}

/* strength popover (opening/free-practice pages) — same Elo ladder as Play, in a small anchored panel */
.strength-pop-wrap{position:relative;margin-left:auto;}
.strength-pop{position:absolute;bottom:100%;right:0;margin-bottom:8px;width:320px;max-width:80vw;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px;box-shadow:var(--shadow-md);z-index:50;}
.strength-pop .elo-ladder{grid-template-columns:repeat(auto-fill,minmax(52px,1fr));}
@media(max-width:700px){.strength-pop{right:auto;left:0;width:280px;}}

/* explorer */
.explorer{display:flex;flex-wrap:wrap;gap:7px;max-height:220px;overflow-y:auto;}
.exp-chip{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;background:var(--panel2);border:1px solid var(--border);border-radius:8px;padding:7px 10px;cursor:pointer;color:var(--text);font-size:0.82rem;transition:all .14s;max-width:100%;}
.exp-chip:hover{border-color:var(--accent);background:var(--panel3);}
.exp-chip b{color:var(--text);}
.exp-chip.line{flex-direction:row;align-items:center;}
.exp-chip.line.done b{color:var(--good);}
.exp-note{font-size:0.7rem;color:var(--faint);line-height:1.35;white-space:normal;}
.exp-empty{font-size:0.8rem;color:var(--faint);}

/* confetti */
.confetti{position:fixed;width:9px;height:9px;border-radius:2px;z-index:10050;pointer-events:none;animation:confetti-fly 1.2s ease-out forwards;}
@keyframes confetti-fly{0%{transform:translate(0,0) rotate(0deg);opacity:1;}100%{transform:translate(var(--dx),var(--dy)) rotate(540deg);opacity:0;}}

/* eval bar hidden via setting */
body.no-evalbar .eval-bar{display:none;}

/* responsive */
@media (max-width:1024px){.coach{width:300px;}}
@media (max-width:560px){.mainnav a{padding:6px 8px;font-size:0.82rem;}.brand{font-size:1.05rem;}}
@media (max-width:880px){
  :root{--sq:min(78px,calc((100vw - 70px)/8));}
  .board-page{flex-direction:column;align-items:center;}
  .coach{width:100%;max-width:460px;}
  .eval-bar{width:100%;height:16px;}
  .eval-fill{top:0;bottom:0;left:0;height:100%;width:calc(var(--frac,0.5)*100%);background:linear-gradient(90deg,#fff,#d7dbe2);}
  .eval-label{filter:none;color:var(--text);mix-blend-mode:normal;top:0;line-height:16px;text-align:right;padding-right:6px;}
}

/* ============================================================
   New features: Play setup, clocks, puzzles, database, insights
   ============================================================ */
.mode-cards.two{margin-top:14px;}
.big-card.slim{padding:16px 18px;}
.big-card.slim .name{font-size:1.05rem;}
.muted{color:var(--muted);font-size:0.82rem;}
.block-label{display:block;font-size:0.72rem;text-transform:uppercase;letter-spacing:.6px;color:var(--faint);margin:10px 0 4px;}
input[type=text],input[type=number],textarea,.sel{background:var(--panel2);border:1px solid var(--border);color:var(--text);border-radius:7px;padding:7px 9px;font-size:0.85rem;font-family:inherit;width:100%;box-sizing:border-box;}
textarea{resize:vertical;}
input[type=file]{font-size:0.78rem;color:var(--muted);margin:4px 0;}

/* setup — asymmetric 2-col layout: left col for TC/Opponent/Colour, right col for Variant */
.setup-grid{display:grid;grid-template-columns:1fr 260px;gap:12px;margin-top:8px;}
.setup-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px 14px;}
.setup-card h3{font-size:0.9rem;margin-bottom:8px;}
.setup-hint{font-size:0.76rem;color:var(--faint);margin-top:8px;line-height:1.4;}
.seg-wrap{display:flex;flex-wrap:wrap;gap:6px;}
.seg{background:var(--panel2);border:1px solid var(--border);color:var(--muted);padding:6px 12px;border-radius:20px;cursor:pointer;font-size:0.8rem;font-weight:600;transition:all .14s;}
.seg:hover{border-color:var(--accent);color:var(--text);}
.seg.on{background:var(--accent);border-color:var(--accent);color:#fff;}
.tc-options{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px;}
.tc-opt{background:var(--panel2);border:1px solid var(--border);color:var(--text);padding:6px 12px;border-radius:7px;cursor:pointer;font-size:0.82rem;font-weight:600;}
.tc-opt:hover{border-color:var(--accent);}
.tc-opt.on{background:var(--accent);border-color:var(--accent);color:#fff;}
.custom-tc{display:flex;gap:12px;margin-top:10px;}
.custom-tc label{font-size:0.74rem;color:var(--faint);display:flex;flex-direction:column;gap:3px;}
.custom-tc input{width:90px;}
.elo-ladder{display:grid;grid-template-columns:repeat(auto-fill,minmax(62px,1fr));gap:5px;margin-top:6px;}
.elo-chip{background:var(--panel2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:6px 4px;cursor:pointer;text-align:center;line-height:1.1;}
.elo-chip:hover{border-color:var(--accent);}
.elo-chip.on{background:var(--accent);border-color:var(--accent);color:#fff;}
.elo-chip b{display:block;font-size:0.9rem;}
.elo-chip span{font-size:0.62rem;color:var(--faint);}
.elo-chip.on span{color:#e8e0ff;}
.start-row{margin:12px 0 0;text-align:center;}
.btn.big{font-size:1.05rem;padding:13px 34px;}
/* Variant picker list */
.variant-list{display:flex;flex-direction:column;gap:3px;overflow-y:auto;margin-top:4px;padding-right:2px;}
.variant-list::-webkit-scrollbar{width:4px;}.variant-list::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px;}
.variant-item{display:flex;align-items:center;gap:10px;background:transparent;border:1px solid transparent;border-radius:8px;padding:7px 10px;cursor:pointer;text-align:left;transition:all .13s;width:100%;}
.variant-item:hover{background:var(--panel2);border-color:var(--border);}
.variant-item.on{background:color-mix(in srgb,var(--accent) 12%,var(--panel));border-color:var(--accent);}
.vi-icon{font-size:1.05rem;width:22px;text-align:center;flex-shrink:0;opacity:0.85;}
.vi-info{flex:1;min-width:0;}
.vi-name{font-size:0.82rem;font-weight:600;color:var(--text);line-height:1.2;display:flex;align-items:center;gap:5px;}
.vi-desc{font-size:0.68rem;color:var(--faint);line-height:1.3;margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.vi-badge{font-size:0.58rem;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;background:var(--warn);color:#fff;padding:1px 5px;border-radius:3px;flex-shrink:0;}
/* Variant card: right column, spans all rows */
.variant-card{grid-column:2;grid-row:1 / span 4;}
@media(max-width:760px){.setup-grid{grid-template-columns:1fr;}.variant-card{grid-column:auto;grid-row:auto;}}
/* Pre-move square highlights */
.sq.pm-src{background:rgba(220,110,0,0.55)!important;}
.sq.pm-dst{background:rgba(220,110,0,0.35)!important;}
/* Three-Check pip counter */
.fs-checks{display:flex;gap:5px;align-items:center;padding:6px 10px;background:var(--panel2);border:1px solid var(--border);border-radius:8px;}
.fs-check-pip{width:8px;height:8px;border-radius:50%;background:var(--border2);transition:background .2s;}
.fs-check-pip.filled{background:var(--bad);}
.fs-check-label{font-size:0.68rem;color:var(--faint);margin-right:2px;}

/* clocks */
.player-clock{display:flex;justify-content:space-between;align-items:center;background:var(--panel);border:1px solid var(--border);border-radius:9px;padding:7px 14px;margin:5px 0;transition:border-color 0.3s,background 0.3s;}
.player-clock.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);}
.pc-name{font-size:0.85rem;font-weight:600;color:var(--muted);}
.player-clock.active .pc-name{color:var(--text);}
.pc-time{font-size:1.4rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text);transition:color 0.3s;}
.player-clock.active .pc-time{color:var(--accent2);}
/* material status */
.pc-material{flex:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:1px;min-width:0;padding:0 8px;}
.pc-material:empty{padding:0;}
.mat-icon{width:15px;height:15px;object-fit:contain;flex:none;margin:0 -3px 0 0;}
.mat-adv{font-size:0.74rem;font-weight:700;color:var(--good);margin-left:5px;}
/* timer warnings — orange when low, red+pulse when critical */
.player-clock.low{border-color:var(--warn);}
.player-clock.low .pc-time{color:var(--warn);}
.player-clock.critical{border-color:var(--bad);}
.player-clock.critical .pc-time{color:var(--bad);animation:clockUrgent 0.65s ease-in-out infinite;}
@keyframes clockUrgent{0%,100%{opacity:1;transform:scale(1);}50%{opacity:0.65;transform:scale(1.03);}}
.result-line{font-size:1.1rem;font-weight:700;padding:6px 0;}
.result-line.win{color:var(--good);}
.result-line.loss{color:var(--bad);}
.result-line.draw{color:var(--warn);}
.perf{margin-top:6px;font-size:0.9rem;}

/* puzzles */
.puzzle-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;}
.pz-rating{font-size:0.9rem;color:var(--muted);}
.pz-rating b{color:var(--accent2);font-size:1.05rem;}
.pz-streak{font-size:0.85rem;color:var(--warn);font-weight:600;}
.pz-meta{font-size:0.82rem;color:var(--muted);line-height:1.5;}
.pz-import{margin-top:8px;}
.pz-import summary{cursor:pointer;font-size:0.82rem;color:var(--accent2);}
.pz-import p{font-size:0.76rem;color:var(--faint);margin:8px 0;}
.pz-import textarea{margin:6px 0;}

/* database */
.db-import-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px;margin-top:8px;}
.db-import-grid textarea{margin:6px 0;}
.db-status{margin:12px 2px;font-size:0.84rem;color:var(--accent2);min-height:1.1em;}
.db-toolbar{display:flex;gap:10px;align-items:center;margin:18px 0 10px;flex-wrap:wrap;}
.db-toolbar input[type=text]{max-width:280px;}
.db-toolbar .sel{width:auto;}
.db-list{display:flex;flex-direction:column;gap:7px;}
.db-row{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--panel);border:1px solid var(--border);border-radius:9px;padding:10px 14px;}
.db-row:hover{border-color:var(--accent);}
.db-main{font-size:0.9rem;}
.db-sub{font-size:0.74rem;color:var(--faint);margin-top:3px;}
.db-res{font-size:0.74rem;color:var(--muted);border:1px solid var(--border);border-radius:5px;padding:1px 6px;margin-left:6px;}
.db-actions{display:flex;gap:6px;flex-shrink:0;}
.db-empty{padding:40px;text-align:center;color:var(--faint);background:var(--panel);border:1px dashed var(--border);border-radius:12px;}

/* insights */
.kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin:6px 0 16px;}
.kpi{background:var(--panel);border:1px solid var(--border);border-radius:11px;padding:16px;text-align:center;}
.kpi-v{font-size:1.6rem;font-weight:700;color:var(--accent2);}
.kpi-l{font-size:0.72rem;text-transform:uppercase;letter-spacing:.6px;color:var(--faint);margin-top:3px;}
.insight-card{margin-bottom:14px;}
.ins-bar{display:flex;align-items:center;gap:10px;margin:7px 0;}
.ins-bar-l{width:90px;font-size:0.82rem;color:var(--muted);flex-shrink:0;}
.ins-bar-track{flex:1;height:14px;background:var(--panel2);border-radius:7px;overflow:hidden;}
.ins-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));}
.ins-bar-v{width:74px;text-align:right;font-size:0.8rem;color:var(--text);flex-shrink:0;}
.ins-table{width:100%;border-collapse:collapse;font-size:0.84rem;}
.ins-table th{text-align:left;color:var(--faint);font-size:0.72rem;text-transform:uppercase;letter-spacing:.5px;padding:5px 8px;border-bottom:1px solid var(--border);}
.ins-table td{padding:6px 8px;border-bottom:1px solid var(--border);}
.ins-mini{height:8px;width:80px;background:var(--panel2);border-radius:4px;overflow:hidden;}
.ins-mini div{height:100%;background:var(--accent);}
.perf-big{font-size:2.4rem;font-weight:800;color:var(--accent2);}

/* ============================================================
   MOVE NOTATION BADGE — shown inline in coach messages
   ============================================================ */
.move-badge{display:inline-block;font-family:ui-monospace,Menlo,'Cascadia Code',monospace;font-size:0.77rem;font-weight:700;background:var(--accent);color:#fff;padding:2px 8px;border-radius:5px;margin-right:5px;letter-spacing:0.02em;vertical-align:middle;}

/* ============================================================
   PRACTICE MODE — try-again / hint buttons inside coach
   ============================================================ */
.practice-actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap;}
.btn.try-again-btn{background:var(--panel3);border-color:var(--border2);color:var(--text);}
.btn.try-again-btn:hover{border-color:var(--accent);background:var(--panel);}
.btn.hint-show-btn{background:color-mix(in srgb,var(--accent) 12%,var(--panel));border-color:var(--accent2);color:var(--accent2);}
.btn.hint-show-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.strikes-row{display:flex;align-items:center;gap:4px;margin-top:6px;font-size:0.72rem;color:var(--faint);}
.strike-pip{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--border2);margin:0 1px;}
.strike-pip.filled{background:var(--bad);}

/* ============================================================
   FULL-SCREEN TOGGLE
   ============================================================ */
.btn.fs-toggle{padding:7px 12px;font-size:0.8rem;}

/* Fullscreen sidebars — hidden by default (shown selectively below) */
.fs-sidebar{display:none;}

/* ============================================================
   NORMAL-MODE STICKY CONTROLS — keep Flip/Takeback/Draw/Resign/Save
   fixed on the side (not just in fullscreen) so they never require
   scrolling to reach, on wide-enough screens. On narrow screens we
   fall back to the inline control row instead (see media query).
   ============================================================ */
@media(min-width:901px){
  .board-page:not(.fs-active) .fs-sidebar.fs-left{
    display:flex;flex-direction:column;gap:9px;
    width:172px;flex-shrink:0;
    position:sticky;top:20px;align-self:flex-start;
    background:var(--panel);border:1px solid var(--border);border-radius:12px;
    padding:16px 14px;
  }
  /* "Exit fullscreen" only makes sense while actually in fullscreen */
  .board-page:not(.fs-active) .fs-sidebar.fs-left #fs-btn-exit{display:none;}
  /* These are now covered by the fixed sidebar — avoid duplicating them
     in the inline control row below the board. */
  .board-page:not(.fs-active) .controls .gm-ctrl{display:none;}
}

/* === Active fullscreen === */
.board-page.fs-active{
  position:fixed;inset:0;z-index:800;
  background:var(--bg);
  display:grid;
  grid-template-columns:170px 1fr 190px;
  grid-template-rows:100vh;
  align-items:center;
  overflow:hidden;
  /* grow board squares to fill available height */
  --sq:min(calc((100vh - 60px) / 8), calc((100vw - 390px) / 8));
}
/* hide elements that move to sidebars */
.board-page.fs-active .eval-bar{display:none;}
.board-page.fs-active .coach{display:none;}
.board-page.fs-active .controls{display:none;}
.board-page.fs-active .share-row{display:none;}
.board-page.fs-active .turn-ind{display:none;}

/* board column fills center, vertically centered */
.board-page.fs-active .board-col{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  height:100vh;padding:16px 0;
}

/* left sidebar — game controls */
.board-page.fs-active .fs-sidebar.fs-left{
  display:flex;flex-direction:column;gap:9px;
  padding:24px 16px;height:100%;justify-content:center;
  border-right:1px solid var(--border);
}
/* right sidebar — clocks + status + new game */
.board-page.fs-active .fs-sidebar.fs-right{
  display:flex;flex-direction:column;gap:12px;
  padding:24px 16px;height:100%;justify-content:center;
  border-left:1px solid var(--border);
}

/* buttons inside sidebars */
.fs-ctrl{width:100%;text-align:left;font-size:0.85rem !important;}
.fs-ctrl.accent{text-align:center;}
.fs-label{font-size:0.68rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--faint);font-weight:600;padding:0 2px;margin-top:6px;}
.fs-turn{font-size:0.88rem;color:var(--muted);text-align:center;padding:8px 12px;background:var(--panel2);border:1px solid var(--border);border-radius:8px;line-height:1.4;min-height:36px;}

/* right-side clocks in fs use the existing .player-clock styles — just ensure full width */
.board-page.fs-active .fs-sidebar.fs-right .player-clock{width:100%;margin:0;}
/* Hide board-col clocks in fullscreen — they show in the right sidebar instead */
.board-page.fs-active .board-col .player-clock{display:none;}

@media(max-width:860px){
  .board-page.fs-active{grid-template-columns:1fr;grid-template-rows:auto;}
  .board-page.fs-active .fs-sidebar{display:none!important;}
}

/* ============================================================
   TEMPO LANDING PAGE
   ============================================================ */
@keyframes tempoFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
.tp [data-reveal]{opacity:1;}
.tp-container{max-width:1240px;margin:0 auto;padding:0 48px;}
.tp-section{padding:96px 0;}
.tp-section.alt{background:var(--panel2);border-top:1px solid var(--border);}
.tp-eyebrow{font-size:13px;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--accent);margin-bottom:16px;}
.tp-h2{font-family:var(--serif);font-weight:400;font-size:42px;line-height:1.1;letter-spacing:-0.02em;color:var(--text);}
.tp-lead{font-size:18px;line-height:1.7;color:var(--muted);}

/* hero */
.tp-hero{max-width:1240px;margin:0 auto;padding:80px 48px 96px;display:grid;grid-template-columns:1.05fr 0.95fr;gap:64px;align-items:center;}
.tp-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;letter-spacing:0.12em;text-transform:uppercase;color:var(--accent);margin-bottom:22px;}
.tp-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.tp-hero h1{font-family:var(--serif);font-weight:400;font-size:60px;line-height:1.04;letter-spacing:-0.02em;color:var(--text);margin-bottom:14px;}
.tp-slogan{font-family:var(--serif);font-style:italic;font-size:23px;color:var(--accent);margin-bottom:22px;}
.tp-hero p{font-size:18px;line-height:1.7;color:var(--muted);max-width:480px;margin-bottom:34px;}
.tp-cta-row{display:flex;align-items:center;gap:14px;margin-bottom:26px;flex-wrap:wrap;}
.tp-btn-primary{font-size:16px;font-weight:500;color:#fff;background:var(--accent);padding:14px 26px;border-radius:12px;text-decoration:none;box-shadow:0 4px 14px rgba(51,78,104,.22);transition:all .2s;display:inline-block;border:none;cursor:pointer;}
.tp-btn-primary:hover{background:var(--accent2);transform:translateY(-2px);box-shadow:0 8px 22px rgba(51,78,104,.28);color:#fff;}
.tp-btn-ghost{font-size:16px;font-weight:500;color:var(--text);background:var(--panel);padding:14px 24px;border-radius:12px;text-decoration:none;border:1px solid var(--border2);transition:all .2s;display:inline-block;}
.tp-btn-ghost:hover{border-color:var(--accent);transform:translateY(-2px);color:var(--text);}
.tp-hero-meta{display:flex;align-items:center;gap:16px;font-size:14px;color:var(--faint);flex-wrap:wrap;}
.tp-hero-meta .sep{opacity:.5;}
.tp-hero-card{background:var(--panel);border-radius:22px;padding:28px;border:1px solid var(--border);box-shadow:var(--shadow-sm),var(--shadow-lg);animation:tempoFloat 7s ease-in-out infinite;}
.tp-hero-card .cap{display:flex;align-items:center;justify-content:space-between;margin-top:22px;padding-top:18px;border-top:1px solid var(--border);}
.tp-hero-card .cap .nm{font-family:var(--serif);font-size:16px;color:var(--text);}
.tp-hero-card .cap .sub{font-size:13px;color:var(--faint);}
.tp-eco{font-size:12px;font-weight:600;letter-spacing:0.06em;color:var(--accent);background:var(--panel3);padding:6px 11px;border-radius:8px;}

/* hero progress card */
.tp-hero-progress{background:var(--panel);border:1px solid var(--border);border-radius:22px;padding:32px;box-shadow:var(--shadow-sm),var(--shadow-lg);}
.tp-prog-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:28px;}
.tp-prog-link{font-size:13px;color:var(--accent);text-decoration:none;white-space:nowrap;margin-top:4px;}
.tp-prog-link:hover{text-decoration:underline;}
.tp-prog-empty{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;padding:24px 0;}
.tp-prog-empty span{font-size:2.2rem;color:var(--accent);opacity:0.5;}
.tp-prog-empty p{font-size:15px;color:var(--muted);line-height:1.6;max-width:260px;}
.tp-prog-footer{display:flex;gap:10px;margin-top:24px;flex-wrap:wrap;}
.tp-prog-footer a{flex:1;text-align:center;}

/* mini board (landing) */
.tp-board{display:grid;grid-template-columns:repeat(8,var(--mbs,52px));grid-template-rows:repeat(8,var(--mbs,52px));border-radius:7px;overflow:hidden;box-shadow:inset 0 0 0 1px rgba(0,0,0,0.05);}
.tp-board .c{display:flex;align-items:center;justify-content:center;}
.tp-board .c .pcw{color:#FBFAF7;-webkit-text-stroke:0.8px #7A6C52;filter:drop-shadow(0 1px 1px rgba(60,50,35,0.22));}
.tp-board .c .pcb{color:#2E2A24;filter:drop-shadow(0 1px 1px rgba(60,50,35,0.22));}

/* journey */
.tp-journey{position:relative;margin-top:8px;}
.tp-journey .line{position:absolute;left:0;right:0;top:23px;height:1px;background:linear-gradient(90deg,transparent,var(--border2) 8%,var(--border2) 92%,transparent);}
.tp-journey .steps{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}
.tp-step{display:flex;flex-direction:column;align-items:flex-start;text-decoration:none;}
.tp-step .num{width:46px;height:46px;border-radius:50%;background:var(--panel2);border:1.5px solid var(--border2);color:var(--muted);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:18px;margin-bottom:18px;transition:all .2s;}
.tp-step:first-child .num,.tp-step:hover .num{border-color:var(--accent);color:var(--accent);}
.tp-step .t{font-family:var(--serif);font-size:17px;color:var(--text);margin-bottom:6px;}
.tp-step .d{font-size:13.5px;line-height:1.5;color:var(--faint);}

/* features */
.tp-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.tp-feature{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:32px;box-shadow:var(--shadow-sm);transition:all .25s;text-decoration:none;display:block;}
.tp-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--border2);}
.tp-feature .ic{width:48px;height:48px;border-radius:12px;background:var(--panel3);display:flex;align-items:center;justify-content:center;margin-bottom:22px;font-size:26px;color:var(--accent);line-height:1;}
.tp-feature h3{font-family:var(--serif);font-size:21px;font-weight:500;color:var(--text);margin-bottom:10px;}
.tp-feature p{font-size:15px;line-height:1.65;color:var(--muted);}

/* preview */
.tp-preview-card{background:var(--panel);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-sm),var(--shadow-lg);overflow:hidden;display:grid;grid-template-columns:1fr 1fr;}
.tp-preview-board{padding:40px;background:var(--panel2);border-right:1px solid var(--border);display:flex;align-items:center;justify-content:center;}
.tp-preview-panel{padding:40px;display:flex;flex-direction:column;}
.tp-pv-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:13px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--faint);}
.tp-pv-bar{height:4px;border-radius:4px;background:var(--panel3);margin-bottom:28px;overflow:hidden;}
.tp-pv-bar>div{height:100%;background:var(--accent);border-radius:4px;}
.tp-pv-title{font-family:var(--serif);font-size:24px;color:var(--text);margin-bottom:16px;}
.tp-pv-text{font-size:15.5px;line-height:1.7;color:var(--muted);margin-bottom:28px;}
.tp-pv-text b{color:var(--text);font-weight:500;}
.tp-pv-moves{display:flex;flex-direction:column;gap:2px;margin-bottom:28px;font-variant-numeric:tabular-nums;}
.tp-pv-moves .mv{display:grid;grid-template-columns:28px 1fr 1fr;align-items:center;font-size:15px;padding:6px 8px;border-radius:8px;color:var(--text);}
.tp-pv-moves .mv .n{color:var(--faint);}
.tp-pv-moves .mv.on{background:var(--panel3);}
.tp-pv-moves .mv.on .w{color:var(--accent);font-weight:600;}
.tp-pv-btns{margin-top:auto;display:flex;align-items:center;gap:12px;}

/* progress dashboard */
.tp-split{display:grid;grid-template-columns:0.9fr 1.1fr;gap:64px;align-items:center;}
.tp-progress-card{background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:40px;box-shadow:var(--shadow-sm),var(--shadow-md);}
.tp-prog-row{margin-bottom:30px;}
.tp-prog-row:last-child{margin-bottom:0;}
.tp-prog-row .top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px;}
.tp-prog-row .top .lbl{font-family:var(--serif);font-size:18px;color:var(--text);}
.tp-prog-row .top .val{font-size:14px;color:var(--faint);font-variant-numeric:tabular-nums;}
.tp-prog-track{height:8px;border-radius:8px;background:var(--panel3);overflow:hidden;}
.tp-prog-track>div{height:100%;background:var(--accent);border-radius:8px;transition:width .8s cubic-bezier(.16,1,.3,1);}

/* philosophy */
.tp-philosophy{max-width:880px;margin:0 auto;padding:120px 48px;text-align:center;}
.tp-philosophy h2{font-family:var(--serif);font-weight:300;font-size:44px;line-height:1.25;letter-spacing:-0.02em;color:var(--text);margin-bottom:44px;}
.tp-pills{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}
.tp-pill{font-size:15px;color:var(--muted);background:var(--panel);border:1px solid var(--border);padding:10px 20px;border-radius:999px;}
.tp-pill.accent{color:#fff;background:var(--accent);border-color:var(--accent);}

/* final cta */
.tp-final{max-width:1240px;margin:0 auto;padding:140px 48px;text-align:center;}
.tp-final .glyph{font-size:40px;color:var(--accent);display:inline-block;margin-bottom:24px;}
.tp-final h2{font-family:var(--serif);font-weight:400;font-size:54px;line-height:1.08;letter-spacing:-0.02em;color:var(--text);margin-bottom:22px;}
.tp-final p{font-size:19px;line-height:1.7;color:var(--muted);max-width:520px;margin:0 auto 38px;}

/* footer */
.tp-footer{border-top:1px solid var(--border);background:var(--panel2);}
.tp-footer .cols{max-width:1240px;margin:0 auto;padding:64px 48px 40px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.tp-footer .brand-row{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.tp-footer .brand-row .nm{font-family:var(--serif);font-weight:500;font-size:20px;color:var(--text);}
.tp-footer .blurb{font-size:14.5px;line-height:1.6;color:var(--faint);max-width:260px;}
.tp-footer .col h4{font-size:13px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--text);margin-bottom:14px;font-family:var(--sans);}
.tp-footer .col a{display:block;font-size:14.5px;color:var(--muted);text-decoration:none;margin-bottom:12px;}
.tp-footer .col a:hover{color:var(--text);}
.tp-footer .bar{max-width:1240px;margin:0 auto;padding:24px 48px 40px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}
.tp-footer .bar span,.tp-footer .bar a{font-size:13.5px;color:var(--faint);text-decoration:none;}
.tp-footer .bar .links{display:flex;gap:24px;}

/* ============================================================
   BOARD WRAP + CHECKMATE OVERLAY
   ============================================================ */
.board-wrap{position:relative;display:inline-block;}
.mate-overlay{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,0.52);border-radius:7px;z-index:200;
  animation:mateIn 0.45s cubic-bezier(.16,1,.3,1);
}
.mate-content{
  text-align:center;padding:24px 36px;
  background:rgba(14,14,14,0.78);backdrop-filter:blur(6px);
  border-radius:14px;border:1.5px solid rgba(255,255,255,0.18);
  box-shadow:0 12px 40px rgba(0,0,0,0.5);
}
.mate-crown{font-size:2.4rem;margin-bottom:6px;filter:drop-shadow(0 2px 6px rgba(0,0,0,0.5));}
.mate-title{font-family:var(--serif);font-size:2rem;font-weight:500;color:#fff;margin-bottom:4px;letter-spacing:-0.02em;}
.mate-winner{font-size:0.92rem;color:rgba(255,255,255,0.72);letter-spacing:0.04em;text-transform:uppercase;font-weight:600;}
@keyframes mateIn{from{opacity:0;transform:scale(0.8);}to{opacity:1;transform:scale(1);}}

/* ============================================================
   MOVE NAVIGATION CONTROLS
   ============================================================ */
.nav-row{justify-content:center;gap:6px;margin-top:4px;}
.btn.nav-btn{min-width:40px;padding:7px 10px;font-size:1rem;font-weight:700;line-height:1;background:var(--panel2);border-color:var(--border);}
.btn.nav-btn:hover:not(:disabled){border-color:var(--accent);background:var(--panel3);}
.btn.nav-btn:disabled{opacity:0.25;cursor:default;}

/* ============================================================
   GAME END MODAL
   ============================================================ */
.ge-modal-overlay{
  position:fixed;inset:0;z-index:10010;
  background:rgba(0,0,0,0.65);
  display:flex;align-items:center;justify-content:center;
  padding:20px;
  animation:fadeIn .25s ease;
}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
.ge-box{
  background:var(--panel);border:1px solid var(--border);
  border-radius:18px;padding:36px 40px;
  text-align:center;max-width:380px;width:100%;
  box-shadow:0 24px 80px rgba(0,0,0,0.45);
  animation:slideUp .35s cubic-bezier(.16,1,.3,1);
}
@keyframes slideUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:translateY(0);}}
.ge-icon{font-size:3rem;margin-bottom:10px;line-height:1;}
.ge-result{font-family:var(--serif);font-size:1.9rem;font-weight:500;color:var(--text);margin-bottom:6px;line-height:1.1;}
.ge-result.win{color:var(--good);}
.ge-result.loss{color:var(--bad);}
.ge-result.draw{color:var(--warn);}
.ge-sub{font-size:0.9rem;color:var(--muted);margin-bottom:6px;}
.ge-perf{font-size:0.82rem;color:var(--faint);margin-bottom:20px;min-height:1.1em;}
.ge-actions{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:20px;}
.ge-actions .btn{flex:1;min-width:90px;text-align:center;padding:10px 14px;}
.ge-actions .btn.big{flex:1.4;}

/* ============================================================
   NEW GAME SETUP MODAL
   ============================================================ */
.ng-overlay{
  position:fixed;inset:0;z-index:10020;
  background:rgba(0,0,0,0.7);
  display:flex;align-items:center;justify-content:center;
  padding:20px;
  overflow-y:auto;
  animation:fadeIn .2s ease;
}
.ng-box{
  background:var(--panel);border:1px solid var(--border);
  border-radius:16px;width:100%;max-width:520px;
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
  animation:slideUp .3s cubic-bezier(.16,1,.3,1);
  max-height:calc(100vh - 40px);overflow-y:auto;
}
.ng-box .modal-head{padding:16px 20px;}
.ng-body{padding:0 20px 20px;display:flex;flex-direction:column;gap:14px;}
.ng-section{}
.ng-section .set-label{margin-bottom:6px;margin-top:0;}
.ng-sub{font-size:0.72rem;color:var(--faint);margin-top:4px;line-height:1.4;}

/* ============================================================
   PLAY PAGE — compact layout so Start button is always visible
   ============================================================ */
.play-hero{padding:0 0 10px;}
.play-hero h1{font-family:var(--serif);font-weight:400;font-size:1.6rem;margin-bottom:4px;}
.play-hero p{color:var(--muted);font-size:0.85rem;line-height:1.5;max-width:560px;}

/* ============================================================
   LEARN PAGE — compact layout
   ============================================================ */
.learn-hero-compact{max-width:1240px;margin:0 auto;padding:28px 48px 20px;}
.learn-hero-compact h1{font-family:var(--serif);font-weight:400;font-size:34px;line-height:1.1;letter-spacing:-0.02em;color:var(--text);margin-bottom:8px;}
.learn-hero-compact p{font-size:15px;line-height:1.65;color:var(--muted);max-width:580px;}
.learn-section-compact{max-width:1240px;margin:0 auto;padding:24px 48px;}
.learn-divider-compact{border:none;border-top:1px solid var(--border);margin:0 48px;}
@media(max-width:700px){
  .learn-hero-compact{padding:20px 20px 14px;}
  .learn-hero-compact h1{font-size:26px;}
  .learn-section-compact{padding:18px 20px;}
  .learn-divider-compact{margin:0 20px;}
}
/* start-cards layout: 2 columns on desktop for less scrolling */
.start-cards-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
@media(max-width:640px){.start-cards-grid{grid-template-columns:1fr;}}
/* compact start-card */
.start-card-compact{padding:14px 16px;}
.start-card-compact .sc-icon{font-size:1.4rem;margin-bottom:8px;}
.start-card-compact .sc-title{font-size:15px;}
/* Opening Repertoire section: 3-col card grid on wide, 2-col on mid */
.open-rep-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;}

/* topbar responsive */
@media (max-width:720px){
  .topbar{grid-template-columns:auto 1fr;grid-template-rows:auto auto;}
  .mainnav{grid-column:1/-1;justify-self:start;flex-wrap:wrap;gap:2px;}
  .topbar-right{grid-row:1;grid-column:2;justify-self:end;}
}

/* landing responsive */
@media (max-width:980px){
  .tp-hero{grid-template-columns:1fr;gap:48px;padding:56px 28px 72px;}
  .tp-hero h1{font-size:46px;}
  .tp-container{padding:0 28px;}
  .tp-journey .steps{grid-template-columns:repeat(3,1fr);row-gap:32px;}
  .tp-journey .line{display:none;}
  .tp-feature-grid{grid-template-columns:1fr 1fr;}
  .tp-preview-card{grid-template-columns:1fr;}
  .tp-preview-board{border-right:none;border-bottom:1px solid var(--border);}
  .tp-split{grid-template-columns:1fr;}
  .tp-footer .cols{grid-template-columns:1fr 1fr;}
}
@media (max-width:620px){
  .tp-hero h1{font-size:38px;}
  .tp-h2,.tp-philosophy h2{font-size:32px;}
  .tp-final h2{font-size:38px;}
  .tp-journey .steps{grid-template-columns:1fr 1fr;}
  .tp-feature-grid{grid-template-columns:1fr;}
  .tp-footer .cols{grid-template-columns:1fr;}
  .tp-section{padding:64px 0;}
}