*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  /* Kraken-inspired light theme */
  --bg:#ffffff;--bg2:#fafafa;--bg3:#f5f5f7;
  --card:#ffffff;--card2:#f7f7f9;--card3:#f0f0f3;
  --border:#dedee5;--border2:#ececef;--border-glow:#c9c9d4;
  --teal:#7132f5;--teal2:#5741d8;--teal3:#5b1ecf;
  --teal-glow:rgba(113,50,245,.12);
  --red:#e5484d;--green:#149e61;--yellow:#d97706;
  --purple:#9333ea;--orange:#f97316;--blue:#3b82f6;
  --text:#101114;--text2:#484b5e;--muted:#686b82;
  --font-code:'IBM Plex Sans',Helvetica,Arial,sans-serif;
  --font-ui:'IBM Plex Sans',Helvetica,Arial,sans-serif;
  --font-display:'IBM Plex Sans',Helvetica,Arial,sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
  --glow-teal:0 4px 24px rgba(113,50,245,.10);
  --r:16px;--rs:10px;
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-ui);min-height:100vh;overflow-x:hidden}
::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg2)}::-webkit-scrollbar-thumb{background:var(--border-glow);border-radius:4px}
a{color:var(--teal);text-decoration:none}a:hover{color:var(--teal2)}
/* Genuine code/monospace surfaces keep a mono font for readability */
.code-body,.code-line,.ch-code,.code-snippet,.open-answer-box textarea,.code-answer-box textarea,
.dev-info-val code,.contrib-status-item pre,.win-title{font-family:var(--font-mono)!important}

/* ── BACKGROUNDS ──
   Kraken's site is clean and whisper-quiet: no neon grid, glowing orbs
   or falling code. These elements stay in the DOM (JS still populates
   #floaters) but are visually suppressed so nothing competes with the
   product on a white surface. */
.bg-grid{display:none}
.bg-orbs{display:none}
.orb{display:none}
@keyframes orbDrift{0%,100%{transform:translate(0,0)}25%{transform:translate(30px,-30px)}50%{transform:translate(-20px,40px)}75%{transform:translate(40px,20px)}}
.floaters{display:none}
.floater{position:absolute;font-family:var(--font-mono);color:rgba(113,50,245,.04);animation:floatUp linear infinite;user-select:none}
@keyframes floatUp{0%{transform:translateY(105vh);opacity:0}5%{opacity:1}95%{opacity:.3}100%{transform:translateY(-5vh);opacity:0}}
.tiffany{display:none}
@keyframes tiffShift{0%{transform:translateX(-100%)}50%{transform:translateX(0%)}100%{transform:translateX(100%)}}

/* ── ANIMATIONS ── */
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideDown{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
@keyframes shimmer{0%{background-position:-400% 0}100%{background-position:400% 0}}
@keyframes badgeUnlock{0%{transform:scale(0) rotate(-15deg);opacity:0}65%{transform:scale(1.15) rotate(3deg)}100%{transform:scale(1) rotate(0);opacity:1}}
@keyframes glitch{0%,90%,100%{transform:translateX(0)}92%{transform:translateX(-3px)}94%{transform:translateX(3px)}96%{transform:translateX(-1px)}}
@keyframes raceWarn{0%,100%{color:var(--yellow)}50%{color:var(--red)}}
@keyframes starPop{0%{transform:scale(0)}60%{transform:scale(1.3)}100%{transform:scale(1)}}

/* ── NAV ── */
nav{position:fixed;top:0;left:0;right:0;z-index:500;display:flex;align-items:center;justify-content:space-between;
  padding:0 2rem;height:62px;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
nav::after{content:none}
.nav-logo{font-family:var(--font-display);font-weight:800;font-size:1.1rem;color:var(--teal);
  letter-spacing:-.01em;display:flex;align-items:center;gap:.6rem;cursor:pointer;user-select:none}
.nav-logo-icon{display:none}
.nav-logo span{color:var(--text);font-family:var(--font-display)}
.nav-links{display:flex;gap:.1rem;list-style:none}
.nav-links a{text-decoration:none;color:var(--muted);font-size:.74rem;font-weight:600;
  letter-spacing:.05em;text-transform:uppercase;padding:.38rem .78rem;border-radius:7px;
  transition:all .2s;cursor:pointer;font-family:var(--font-code)}
.nav-links a:hover,.nav-links a.active{color:var(--teal);background:var(--teal-glow)}
.nav-links a.active{box-shadow:inset 0 0 0 1px rgba(113,50,245,.2)}
.nav-right{display:flex;align-items:center;gap:.6rem}
.nav-xp{display:flex;align-items:center;gap:.5rem;background:var(--card);border:1px solid var(--border);
  border-radius:8px;padding:.28rem .75rem;font-family:var(--font-code);font-size:.75rem}
.nav-xp .xpv{color:var(--yellow);font-weight:700}
.lvl-badge{background:linear-gradient(135deg,var(--yellow),var(--orange));color:#000;
  border-radius:5px;padding:.1rem .4rem;font-size:.62rem;font-weight:800;letter-spacing:.05em}
.nav-user-btn{display:flex;align-items:center;gap:.4rem;background:var(--card);border:1px solid var(--border);
  border-radius:8px;padding:.28rem .75rem;cursor:pointer;font-family:var(--font-code);
  font-size:.75rem;color:var(--text);transition:border-color .2s}
.nav-user-btn:hover{border-color:var(--teal)}
.nav-avatar{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--purple));
  display:flex;align-items:center;justify-content:center;font-size:.62rem;font-weight:700;color:var(--bg);flex-shrink:0}
.lang-toggle{display:flex;align-items:center;background:var(--card);border:1px solid var(--border);
  border-radius:7px;overflow:hidden;height:30px}
.lang-btn{background:transparent;border:none;padding:0 .6rem;height:100%;font-family:var(--font-code);
  font-size:.72rem;font-weight:700;color:var(--muted);cursor:pointer;transition:all .15s}
.lang-btn.active{background:var(--teal);color:var(--bg)}
.lang-div{width:1px;height:55%;background:var(--border)}

/* ── PAGES ── */
.page{display:none;padding-top:62px;min-height:100vh;position:relative;z-index:1}
.page.active{display:block}

/* ── MODAL ── */
.modal-overlay{position:fixed;inset:0;background:rgba(16,17,20,.45);backdrop-filter:blur(6px);
  z-index:1000;display:none;align-items:center;justify-content:center;animation:fadeIn .2s}
.modal-overlay.open{display:flex}
.modal-box{background:var(--card);border:1px solid var(--border);border-radius:16px;
  padding:2.5rem;width:100%;max-width:440px;position:relative;
  box-shadow:0 24px 60px rgba(16,24,40,.14);animation:fadeUp .3s}
.modal-box::before{content:none}
.modal-close{position:absolute;top:1rem;right:1rem;background:transparent;border:none;
  color:var(--muted);font-size:1.1rem;cursor:pointer;transition:color .2s;
  width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;font-family:var(--font-ui)}
.modal-close:hover{color:var(--text);background:rgba(148,151,169,.08)}
.modal-title{font-size:1.35rem;font-weight:700;letter-spacing:-.02em;margin-bottom:.25rem;font-family:var(--font-display)}
.modal-sub{color:var(--muted);font-family:var(--font-ui);font-size:.76rem;margin-bottom:1.75rem}
.modal-tabs{display:flex;gap:.25rem;margin-bottom:1.75rem;background:var(--card3);border-radius:10px;padding:.2rem}
.modal-tab{flex:1;padding:.42rem;border:none;background:transparent;border-radius:8px;
  font-family:var(--font-ui);font-size:.8rem;font-weight:600;color:var(--muted);cursor:pointer;transition:all .2s;text-align:center}
.modal-tab.active{background:var(--teal);color:#fff}
.form-group{margin-bottom:1rem}
.form-group label{display:block;font-family:var(--font-ui);font-size:.68rem;color:var(--muted);letter-spacing:.04em;text-transform:uppercase;margin-bottom:.35rem}
.form-input{width:100%;background:var(--card3);border:1px solid var(--border);border-radius:10px;
  padding:.65rem 1rem;color:var(--text);font-family:var(--font-ui);font-size:.83rem;outline:none;transition:border-color .2s,box-shadow .2s}
.form-input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(113,50,245,.12)}
.form-input::placeholder{color:var(--muted)}
.modal-error{color:var(--red);font-family:var(--font-ui);font-size:.76rem;margin-bottom:.75rem;display:none}
.modal-error.show{display:block}
.btn-full{width:100%;background:var(--teal);color:#fff;
  border:none;border-radius:12px;padding:.78rem;font-family:var(--font-display);font-weight:600;
  font-size:.88rem;cursor:pointer;transition:transform .12s,box-shadow .15s,background .15s;
  box-shadow:rgba(0,0,0,.03) 0px 4px 24px}
.btn-full:hover{background:var(--teal2);box-shadow:rgba(0,0,0,.06) 0px 6px 28px}
.modal-divider{display:flex;align-items:center;gap:.75rem;margin:1.1rem 0;color:var(--muted);font-family:var(--font-ui);font-size:.7rem}
.modal-divider::before,.modal-divider::after{content:'';flex:1;height:1px;background:var(--border)}
.btn-ghost-sm{width:100%;background:#fff;border:1px solid var(--border);border-radius:12px;
  padding:.72rem;font-family:var(--font-ui);font-weight:600;font-size:.83rem;color:var(--text);
  cursor:pointer;transition:border-color .2s,background .2s}
.btn-ghost-sm:hover{border-color:var(--muted);background:rgba(148,151,169,.06)}

/* ── TOAST ── */
.toast-container{position:fixed;top:74px;right:1.25rem;z-index:800;display:flex;flex-direction:column;gap:.4rem;pointer-events:none}
.toast{background:var(--card);border:1px solid var(--border);border-radius:12px;
  padding:.85rem 1.1rem;display:flex;align-items:center;gap:.75rem;
  animation:slideDown .4s;box-shadow:0 12px 32px rgba(16,24,40,.12);pointer-events:auto;min-width:260px}
.toast.xp-t{border-color:rgba(217,119,6,.3)}
.toast.badge-t{border-color:rgba(113,50,245,.3);animation:badgeUnlock .5s}
.toast.race-t{border-color:rgba(20,158,97,.3)}
.toast-icon{font-size:1.4rem;flex-shrink:0}
.toast-lbl{font-family:var(--font-code);font-size:.62rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.toast-msg{font-weight:700;font-size:.85rem}
.toast.xp-t .toast-msg{color:var(--yellow)}
.toast.badge-t .toast-msg{color:var(--teal)}
.toast.race-t .toast-msg{color:var(--green)}

/* ── BUTTONS ──
   Kraken button system: 12px radius max, whisper shadows, solid fills
   instead of glowing gradients. */
.btn-primary{background:var(--teal);color:#fff;
  border:none;border-radius:12px;padding:.82rem 2rem;font-family:var(--font-display);
  font-weight:600;font-size:.88rem;cursor:pointer;letter-spacing:0;
  transition:transform .12s,box-shadow .15s,background .15s;box-shadow:rgba(0,0,0,.03) 0px 4px 24px}
.btn-primary:hover{background:var(--teal2);box-shadow:rgba(0,0,0,.06) 0px 8px 28px}
.btn-ghost{background:#fff;color:var(--teal2);border:1px solid var(--teal2);
  border-radius:12px;padding:.82rem 1.5rem;font-family:var(--font-ui);
  font-weight:600;font-size:.88rem;cursor:pointer;transition:color .2s,border-color .2s,background .2s}
.btn-ghost:hover{background:rgba(113,50,245,.06)}

/* ── HOME ── */
.hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:4rem;
  padding:5rem 5rem 3rem;max-width:1320px;margin:0 auto;width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:var(--teal-glow);
  border:1px solid rgba(113,50,245,.3);border-radius:100px;padding:.28rem .9rem;
  font-family:var(--font-code);font-size:.7rem;color:var(--teal);margin-bottom:1.4rem;animation:fadeUp .6s both}
.hero-badge .dot-live{width:6px;height:6px;background:var(--green);border-radius:50%;animation:pulse 2s infinite;flex-shrink:0}
.hero-title{font-family:var(--font-display);font-size:clamp(2.4rem,4.5vw,4rem);font-weight:800;
  line-height:1.05;letter-spacing:-.01em;animation:fadeUp .6s .1s both}
.hero-title .accent{color:var(--teal)}
.hero-title .glitch{animation:glitch 6s ease-in-out infinite}
.hero-desc{margin-top:1.4rem;color:var(--text2);font-family:var(--font-code);font-size:.85rem;
  line-height:1.9;animation:fadeUp .6s .2s both}
.hero-actions{margin-top:2.25rem;display:flex;gap:.9rem;align-items:center;animation:fadeUp .6s .3s both}
.hero-stats{display:flex;gap:2.5rem;margin-top:2.75rem;animation:fadeUp .6s .4s both}
.h-stat{display:flex;flex-direction:column;gap:.2rem}
.h-stat-num{font-family:var(--font-display);font-size:1.9rem;font-weight:800;color:var(--teal)}
.h-stat-lbl{font-size:.7rem;color:var(--muted);font-family:var(--font-code)}
.hero-visual{animation:fadeUp .6s .15s both;position:relative}
.hero-visual::before{content:none}
.code-window{background:var(--card);border:1px solid var(--border);border-radius:var(--r);
  overflow:hidden;box-shadow:0 20px 60px rgba(16,24,40,.10)}
.code-win-bar{background:var(--card2);padding:.7rem 1rem;display:flex;align-items:center;gap:.45rem;border-bottom:1px solid var(--border)}
.dot{width:10px;height:10px;border-radius:50%}
.dot-r{background:#FF5F57}.dot-y{background:#FEBC2E}.dot-g{background:#28C840}
.win-title{margin-left:.4rem;font-family:var(--font-code);font-size:.7rem;color:var(--muted)}
.code-body{padding:1.25rem 1.5rem;font-family:var(--font-code);font-size:.78rem;line-height:2}
.code-line{display:flex;gap:1.2rem;border-radius:3px;padding:0 .25rem}
.code-line.bug-line{background:rgba(229,72,77,.08);border-left:2px solid var(--red);margin-left:-.25rem}
.ln{color:#b3b3bd;min-width:1.4rem;text-align:right;user-select:none;font-size:.72rem}
.kw{color:#7c3aed}.fn{color:#3b82f6}.str{color:#15803d}.num{color:var(--yellow)}
.cmt{color:var(--muted)}.op{color:var(--teal)}.err{color:var(--red);text-decoration:wavy underline var(--red)}
.bug-marker{display:inline-flex;align-items:center;gap:.35rem;background:rgba(229,72,77,.1);
  border:1px solid rgba(229,72,77,.3);border-radius:6px;padding:.15rem .7rem;
  color:var(--red);font-size:.7rem;margin:.4rem 0 .4rem 2.6rem;font-family:var(--font-code)}

/* Features */
.features-section{padding:1rem 5rem 4rem;max-width:1320px;margin:0 auto;width:100%}
.section-tag{font-family:var(--font-code);font-size:.68rem;color:var(--teal);letter-spacing:.14em;text-transform:uppercase;margin-bottom:.5rem}
.section-title{font-family:var(--font-display);font-size:1.75rem;font-weight:800;letter-spacing:-.01em;margin-bottom:1.75rem}
.section-title .accent{color:var(--teal)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.feat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);
  padding:1.75rem;transition:border-color .25s,transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.feat-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,var(--teal-glow),transparent);opacity:0;transition:opacity .3s}
.feat-card:hover{border-color:rgba(113,50,245,.35);transform:translateY(-4px);box-shadow:var(--glow-teal)}
.feat-card:hover::before{opacity:1}
.feat-icon{width:44px;height:44px;background:var(--teal-glow);border:1px solid rgba(113,50,245,.2);
  border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:1.25rem;margin-bottom:.9rem}
.feat-title{font-weight:700;font-size:.95rem;margin-bottom:.35rem}
.feat-desc{color:var(--muted);font-size:.8rem;font-family:var(--font-code);line-height:1.75}

/* Tips ticker */
.tips-bar{background:rgba(113,50,245,.04);border-bottom:1px solid var(--border2);padding:.5rem 2rem;
  display:flex;align-items:center;gap:1rem;overflow:hidden}
.tips-label{font-family:var(--font-code);font-size:.65rem;color:var(--teal);text-transform:uppercase;letter-spacing:.1em;flex-shrink:0}
.tips-text{font-family:var(--font-code);font-size:.75rem;color:var(--text2);white-space:nowrap;animation:tickScroll 28s linear infinite}
@keyframes tickScroll{0%{transform:translateX(60vw)}100%{transform:translateX(-100%)}}

/* ── BUG CASES PAGE ── */
.cases-wrap{max-width:1100px;margin:0 auto;padding:3rem 2rem 5rem;width:100%}
.page-heading{font-family:var(--font-display);font-size:2rem;font-weight:800;margin-bottom:.3rem}
.page-heading .accent{color:var(--teal)}
.page-sub{color:var(--muted);font-family:var(--font-code);font-size:.8rem;margin-bottom:2.5rem}
.case-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;margin-bottom:1.2rem;cursor:pointer;transition:border-color .25s,box-shadow .25s}
.case-card:hover{border-color:rgba(229,72,77,.4);box-shadow:0 10px 40px rgba(229,72,77,.08)}
.case-header{padding:1.5rem}
.case-incident{font-family:var(--font-code);font-size:.65rem;color:var(--red);text-transform:uppercase;letter-spacing:.1em;margin-bottom:.5rem}
.case-title{font-family:var(--font-display);font-size:1rem;font-weight:700;line-height:1.3}
.case-meta{display:flex;gap:.75rem;margin-top:.75rem;font-family:var(--font-code);font-size:.7rem;color:var(--muted);flex-wrap:wrap}
.case-tag{background:rgba(229,72,77,.1);border:1px solid rgba(229,72,77,.2);color:var(--red);padding:.1rem .5rem;border-radius:4px}
.case-toggle{display:flex;align-items:center;gap:.4rem;font-family:var(--font-code);font-size:.7rem;color:var(--teal);margin-top:.75rem}
.case-body{padding:0 1.5rem 1.5rem;display:none}
.case-body.open{display:block;animation:fadeUp .3s}
.case-body p{font-size:.84rem;color:var(--text2);line-height:1.8;font-family:var(--font-code)}
.timeline{margin:1rem 0;padding-left:1rem;border-left:2px solid var(--border-glow)}
.tl-item{margin-bottom:.75rem;position:relative}
.tl-item::before{content:'';width:8px;height:8px;background:var(--teal);border-radius:50%;position:absolute;left:-1.35rem;top:.35rem}
.tl-date{font-family:var(--font-code);font-size:.65rem;color:var(--muted)}
.tl-text{font-size:.82rem;color:var(--text2)}
.case-lesson{background:rgba(20,158,97,.06);border:1px solid rgba(20,158,97,.15);border-radius:8px;padding:.9rem 1.1rem;margin-top:1rem}
.case-lesson strong{color:var(--green);font-family:var(--font-code);font-size:.7rem;text-transform:uppercase;letter-spacing:.07em;display:block;margin-bottom:.35rem}
.code-snippet{background:var(--card2);border:1px solid var(--border);border-radius:8px;padding:1rem;margin:1rem 0;font-family:var(--font-code);font-size:.78rem;line-height:1.9}
.code-snippet .snip-label{font-size:.65rem;color:var(--muted);margin-bottom:.5rem}

/* Roadmap */
.roadmap-section{padding:0 2rem 4rem;max-width:1100px;margin:0 auto;width:100%}
.roadmap-track{position:relative;padding:1.5rem 0}
.roadmap-track::before{content:'';position:absolute;left:2.5rem;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--teal),var(--purple),transparent)}
.roadmap-step{display:flex;gap:1.75rem;margin-bottom:1.75rem;align-items:flex-start}
.roadmap-node{width:5rem;height:5rem;flex-shrink:0;background:var(--card2);border:2px solid var(--border);
  border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-size:1.3rem;position:relative;z-index:2;transition:border-color .25s,box-shadow .25s}
.roadmap-step.done .roadmap-node{border-color:var(--teal);box-shadow:var(--glow-teal);background:rgba(113,50,245,.05)}
.roadmap-step.current .roadmap-node{border-color:var(--yellow);background:rgba(217,119,6,.05);animation:pulse 2.5s infinite}
.roadmap-node-num{font-family:var(--font-display);font-size:.62rem;font-weight:800;color:var(--muted)}
.roadmap-step.done .roadmap-node-num{color:var(--teal)}
.roadmap-content{padding-top:.5rem;flex:1}
.roadmap-content h3{font-family:var(--font-display);font-weight:700;font-size:1rem;margin-bottom:.35rem}
.roadmap-content p{color:var(--text2);font-size:.82rem;font-family:var(--font-code);line-height:1.7}
.roadmap-pills{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.6rem}
.roadmap-pill{background:var(--teal-glow);border:1px solid rgba(113,50,245,.2);color:var(--teal);font-family:var(--font-code);font-size:.65rem;padding:.15rem .55rem;border-radius:100px}

/* ── STATS PAGE ── */
.stats-wrap{max-width:1100px;margin:0 auto;padding:3rem 2rem 5rem;width:100%}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:2.25rem}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);
  padding:1.4rem;position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s}
.stat-card:hover{transform:translateY(-3px);box-shadow:0 12px 32px rgba(16,24,40,.10)}
.stat-card::after{content:'';position:absolute;top:0;left:0;right:0;height:2px}
.stat-card.teal::after{background:linear-gradient(90deg,transparent,var(--teal),transparent)}
.stat-card.green::after{background:linear-gradient(90deg,transparent,var(--green),transparent)}
.stat-card.yellow::after{background:linear-gradient(90deg,transparent,var(--yellow),transparent)}
.stat-card.purple::after{background:linear-gradient(90deg,transparent,var(--purple),transparent)}
.stat-card.red::after{background:linear-gradient(90deg,transparent,var(--red),transparent)}
.stat-card.orange::after{background:linear-gradient(90deg,transparent,var(--orange),transparent)}
.stat-card.blue::after{background:linear-gradient(90deg,transparent,var(--blue),transparent)}
.sc-icon{font-size:1.5rem;margin-bottom:.65rem}
.sc-label{font-family:var(--font-code);font-size:.67rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.25rem}
.sc-value{font-family:var(--font-display);font-size:2rem;font-weight:800}
.stat-card.teal .sc-value{color:var(--teal)}
.stat-card.green .sc-value{color:var(--green)}
.stat-card.yellow .sc-value{color:var(--yellow)}
.stat-card.purple .sc-value{color:var(--purple)}
.stat-card.red .sc-value{color:var(--red)}
.stat-card.orange .sc-value{color:var(--orange)}
.stat-card.blue .sc-value{color:var(--blue)}
.sc-sub{font-size:.73rem;color:var(--muted);font-family:var(--font-code);margin-top:.15rem}
.xp-section{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.75rem;margin-bottom:2.25rem}
.xp-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.2rem}
.xp-title{font-weight:700;font-size:.95rem;font-family:var(--font-display)}
.xp-bar-wrap{background:var(--card3);border-radius:100px;height:10px;overflow:hidden}
.xp-bar-fill{height:100%;background:linear-gradient(90deg,var(--teal3),var(--teal2),var(--teal));
  border-radius:100px;transition:width .7s cubic-bezier(.4,0,.2,1);position:relative}
.xp-bar-fill::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.25),transparent);animation:shimmer 2.5s linear infinite;background-size:400% 100%}
.xp-info{display:flex;justify-content:space-between;margin-top:.5rem;font-family:var(--font-code);font-size:.7rem;color:var(--muted)}
.stats-charts{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem;margin-bottom:2.25rem}
.chart-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.5rem}
.chart-title{font-weight:700;font-size:.9rem;margin-bottom:1.25rem;display:flex;align-items:center;gap:.5rem}
.bar-chart{display:flex;align-items:flex-end;gap:.5rem;height:120px}
.bar-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:.4rem;height:100%}
.bar-fill{width:100%;background:linear-gradient(to top,var(--teal3),var(--teal));border-radius:4px 4px 0 0;transition:height .8s cubic-bezier(.4,0,.2,1);min-height:4px}
.bar-label{font-family:var(--font-code);font-size:.62rem;color:var(--muted);text-align:center}
.radar-grid{display:grid;grid-template-columns:1fr 1fr;gap:.6rem}
.radar-row{display:flex;flex-direction:column;gap:.25rem}
.radar-label{display:flex;justify-content:space-between;font-family:var(--font-code);font-size:.68rem;color:var(--muted)}
.radar-val{color:var(--text)}
.mini-bar{height:5px;background:var(--card3);border-radius:3px;overflow:hidden}
.mini-bar-fill{height:100%;border-radius:3px;transition:width .8s}
.achievements-section{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.75rem}
.section-h{font-weight:700;font-size:.95rem;margin-bottom:1.25rem;display:flex;align-items:center;gap:.5rem;font-family:var(--font-display)}
.badges-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:.9rem}
.badge-card{background:var(--card3);border:1px solid var(--border);border-radius:12px;padding:1.1rem;text-align:center;transition:transform .2s,border-color .2s,box-shadow .2s;position:relative}
.badge-card.unlocked{border-color:rgba(113,50,245,.35);background:rgba(113,50,245,.04)}
.badge-card.unlocked:hover{transform:translateY(-3px);box-shadow:var(--glow-teal)}
.badge-card.locked{opacity:.4;filter:grayscale(.8)}
.badge-icon{font-size:2rem;margin-bottom:.5rem;display:block}
.badge-name{font-size:.75rem;font-weight:700;margin-bottom:.15rem}
.badge-card.unlocked .badge-name{color:var(--teal)}
.badge-desc{font-family:var(--font-code);font-size:.62rem;color:var(--muted);line-height:1.5}
.badge-lock{position:absolute;top:.4rem;right:.4rem;font-size:.7rem;opacity:.5}

/* ── CHALLENGES PAGE ── */
.ch-header{padding:2.5rem 4rem 1.5rem;max-width:1320px;margin:0 auto;width:100%}
.ch-header h1{font-family:var(--font-display);font-size:1.9rem;font-weight:800;margin-bottom:.3rem}
.ch-sub{color:var(--muted);font-family:var(--font-code);font-size:.8rem;margin-bottom:1.2rem}
.ch-toolbar{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin-bottom:1rem}
.cat-filters{display:flex;flex-wrap:wrap;gap:.4rem}
.cat-btn,.diff-btn{background:var(--card2);border:1px solid var(--border);border-radius:7px;
  padding:.35rem .9rem;font-family:var(--font-code);font-size:.74rem;font-weight:600;
  color:var(--muted);cursor:pointer;transition:all .18s}
.cat-btn:hover,.diff-btn:hover{border-color:var(--muted);color:var(--text)}
.cat-btn.active{background:var(--teal-glow);border-color:rgba(113,50,245,.4);color:var(--teal)}
.diff-btn.active[data-diff="1"]{background:rgba(20,158,97,.1);border-color:rgba(20,158,97,.3);color:var(--green)}
.diff-btn.active[data-diff="2"]{background:rgba(217,119,6,.1);border-color:rgba(217,119,6,.3);color:var(--yellow)}
.diff-btn.active[data-diff="3"]{background:rgba(249,115,22,.1);border-color:rgba(249,115,22,.3);color:var(--orange)}
.diff-btn.active[data-diff="4"]{background:rgba(229,72,77,.1);border-color:rgba(229,72,77,.3);color:var(--red)}
.race-toggle{display:flex;align-items:center;gap:.5rem;margin-left:auto;background:var(--card2);
  border:1px solid var(--border);border-radius:8px;padding:.4rem .9rem;
  font-family:var(--font-code);font-size:.74rem;color:var(--muted);cursor:pointer;transition:all .2s}
.race-toggle:hover{border-color:var(--yellow);color:var(--yellow)}
.race-toggle.on{background:rgba(217,119,6,.1);border-color:rgba(217,119,6,.35);color:var(--yellow)}
.race-dot{width:7px;height:7px;background:var(--yellow);border-radius:50%;display:none;animation:pulse 1.2s infinite}
.race-toggle.on .race-dot{display:block}
.race-banner{background:linear-gradient(135deg,rgba(217,119,6,.1),rgba(249,115,22,.08));border:1px solid rgba(217,119,6,.25);
  border-radius:var(--rs);padding:.7rem 1.2rem;margin-bottom:1rem;display:none;align-items:center;gap:.75rem;font-family:var(--font-code);font-size:.78rem;color:var(--yellow)}
.race-banner.vis{display:flex}
.progress-bar-wrap{height:5px;background:var(--card3);border-radius:3px;overflow:hidden}
.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--teal3),var(--teal));border-radius:3px;transition:width .5s}
.progress-info{display:flex;justify-content:space-between;margin-top:.5rem;font-family:var(--font-code);font-size:.72rem;color:var(--muted)}
.challenge-arena{max-width:900px;margin:0 auto;padding:0 4rem 4rem;width:100%}
.challenge-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;animation:fadeUp .4s;box-shadow:0 16px 40px rgba(16,24,40,.08)}
.ch-card-header{padding:1.25rem 1.75rem;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap}
.ch-meta{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.ch-type-badge{font-family:var(--font-code);font-size:.68rem;font-weight:700;padding:.2rem .6rem;border-radius:5px;letter-spacing:.06em;text-transform:uppercase}
.ch-type-badge.find{background:rgba(229,72,77,.15);color:var(--red);border:1px solid rgba(229,72,77,.25)}
.ch-type-badge.fix{background:rgba(217,119,6,.12);color:var(--yellow);border:1px solid rgba(217,119,6,.22)}
.ch-type-badge.pred{background:rgba(147,51,234,.12);color:var(--purple);border:1px solid rgba(147,51,234,.22)}
.ch-diff-stars{display:flex;gap:.15rem;font-size:.7rem}
.star-on{color:var(--yellow)}.star-off{color:var(--border-glow)}
.ch-xp-badge{font-family:var(--font-code);font-size:.7rem;background:rgba(217,119,6,.1);border:1px solid rgba(217,119,6,.2);color:var(--yellow);padding:.15rem .55rem;border-radius:5px}
.ch-timer{display:flex;align-items:center;gap:.5rem;font-family:var(--font-display);font-size:1.2rem;font-weight:700}
.ch-timer.warn{color:var(--red);animation:raceWarn .8s infinite}
.ch-timer.racemode{background:rgba(217,119,6,.08);border:1px solid rgba(217,119,6,.2);border-radius:8px;padding:.3rem .8rem}
.timer-ring{width:28px;height:28px;flex-shrink:0}
.timer-ring svg{transform:rotate(-90deg)}
.timer-ring circle{transition:stroke-dashoffset .9s linear}
.ch-question{padding:1.25rem 1.75rem;font-weight:600;font-size:.95rem;line-height:1.55;border-bottom:1px solid var(--border)}
.ch-code{padding:1.25rem 1.75rem;border-bottom:1px solid var(--border);font-family:var(--font-code);font-size:.8rem;line-height:2;overflow-x:auto}
.ch-opts-label{padding:.9rem 1.75rem .4rem;font-family:var(--font-code);font-size:.68rem;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;border-bottom:1px solid var(--border)}
.opts-grid{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;padding:1.1rem 1.75rem}
.opt-btn{background:var(--card2);border:1px solid var(--border);border-radius:var(--rs);padding:.85rem 1.1rem;font-family:var(--font-code);font-size:.8rem;color:var(--text2);cursor:pointer;transition:all .18s;text-align:left;line-height:1.5}
.opt-btn:hover:not(:disabled){border-color:var(--border-glow);color:var(--text);background:rgba(148,151,169,.06)}
.opt-btn.selected{border-color:var(--teal2);background:var(--teal-glow);color:var(--teal)}
.opt-btn.correct{border-color:var(--green);background:rgba(20,158,97,.1);color:var(--green);cursor:default}
.opt-btn.wrong{border-color:var(--red);background:rgba(229,72,77,.08);color:var(--red);cursor:default}
.opt-letter{color:var(--muted);margin-right:.4rem;font-size:.7rem}
.feedback-box{padding:1rem 1.75rem 1.25rem;border-top:1px solid var(--border)}
.feedback-correct,.feedback-wrong{border-radius:var(--rs);padding:1rem 1.1rem}
.feedback-correct{background:rgba(20,158,97,.07);border:1px solid rgba(20,158,97,.2);color:var(--green)}
.feedback-wrong{background:rgba(229,72,77,.07);border:1px solid rgba(229,72,77,.2);color:var(--red)}
.feedback-title{font-weight:700;font-size:.9rem;margin-bottom:.35rem}
.feedback-exp{font-size:.82rem;color:var(--text2);line-height:1.65;font-family:var(--font-code)}
.feedback-exp code{background:rgba(113,50,245,.1);color:var(--teal);padding:.1rem .35rem;border-radius:3px}
.ch-actions{padding:1rem 1.75rem 1.5rem;display:flex;gap:.6rem;align-items:center;flex-wrap:wrap;border-top:1px solid var(--border2)}
.btn-submit{background:var(--teal);color:#fff;border:none;border-radius:12px;padding:.7rem 1.6rem;font-family:var(--font-display);font-weight:600;font-size:.85rem;cursor:pointer;transition:transform .1s,box-shadow .15s,background .15s;box-shadow:rgba(0,0,0,.03) 0px 4px 24px;letter-spacing:0}
.btn-submit:hover:not(:disabled){background:var(--teal2);box-shadow:rgba(0,0,0,.06) 0px 6px 26px}
.btn-submit:disabled{opacity:.4;cursor:default;transform:none;box-shadow:none}
.btn-hint{background:transparent;border:1px solid var(--border);border-radius:var(--rs);padding:.7rem 1.1rem;font-family:var(--font-code);font-size:.78rem;color:var(--muted);cursor:pointer;transition:all .18s}
.btn-hint:hover{border-color:var(--yellow);color:var(--yellow)}
.btn-skip-ch{background:transparent;border:1px solid var(--border);border-radius:var(--rs);padding:.7rem 1.1rem;font-family:var(--font-code);font-size:.78rem;color:var(--muted);cursor:pointer;transition:all .18s;margin-left:auto}
.btn-skip-ch:hover{border-color:var(--red);color:var(--red)}
.hint-box{padding:0 1.75rem .8rem;font-family:var(--font-code);font-size:.8rem;color:var(--text2);background:rgba(217,119,6,.04);border-top:1px solid rgba(217,119,6,.1);display:none}
.hint-box.open{display:block;animation:fadeUp .25s}
.hint-title{font-size:.65rem;color:var(--yellow);text-transform:uppercase;letter-spacing:.1em;padding:.65rem 0 .3rem;display:block}
.completion-screen{display:none;flex-direction:column;align-items:center;justify-content:center;padding:5rem 2rem;text-align:center}
.completion-screen.vis{display:flex}
.comp-trophy{font-size:5rem;animation:starPop .5s both;margin-bottom:1rem}
.comp-title{font-family:var(--font-display);font-size:2rem;font-weight:800;margin-bottom:.5rem}
.comp-score{font-family:var(--font-display);font-size:1.2rem;color:var(--teal);margin-bottom:.25rem}
.comp-detail{color:var(--muted);font-family:var(--font-code);font-size:.82rem;margin-bottom:2rem}
.comp-actions{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center}

/* ── LEADERBOARD ── */
.lb-wrap{max-width:900px;margin:0 auto;padding:3rem 2rem 5rem;width:100%}
.lb-podium{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:1rem;margin-bottom:2.5rem;align-items:end}
.podium-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.5rem;text-align:center;transition:transform .2s}
.podium-card:hover{transform:translateY(-4px)}
.podium-card.first{border-color:rgba(217,119,6,.4);box-shadow:0 10px 28px rgba(217,119,6,.12)}
.podium-rank{font-size:2.2rem;margin-bottom:.5rem}
.podium-name{font-weight:800;font-family:var(--font-display);font-size:1rem;margin-bottom:.3rem}
.podium-score{font-family:var(--font-display);font-size:1.4rem;font-weight:800;color:var(--teal)}
.podium-detail{font-family:var(--font-code);font-size:.68rem;color:var(--muted);margin-top:.25rem}
.lb-table{background:var(--card);border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.lb-row{display:grid;grid-template-columns:3rem 1fr 5rem 5.5rem 5rem 5.5rem;
  padding:.9rem 1.25rem;border-bottom:1px solid var(--border2);align-items:center;font-family:var(--font-code);font-size:.78rem;transition:background .15s}
.lb-row:last-child{border-bottom:none}
.lb-row:hover:not(.header){background:rgba(148,151,169,.05)}
.lb-row.header{font-size:.65rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;background:var(--card2)}
.lb-row.me{background:rgba(113,50,245,.05);border-left:2px solid var(--teal)}
.lb-rank{font-weight:700}
.lb-rank.gold{color:var(--yellow)}.lb-rank.silver{color:#C0C0C0}.lb-rank.bronze{color:#CD7F32}
.lb-player{display:flex;align-items:center;gap:.6rem}
.lb-ava{width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:var(--bg);flex-shrink:0}
.lb-acc{color:var(--green)}.lb-xp{color:var(--yellow)}
.lb-empty{padding:3rem;text-align:center;color:var(--muted);font-family:var(--font-code);font-size:.85rem}

/* ── ABOUT PAGE ── */
.about-wrap{max-width:900px;margin:0 auto;padding:3rem 2rem 5rem;width:100%}
.about-wrap h1{font-family:var(--font-display);font-size:2rem;font-weight:800;margin-bottom:.3rem}
.about-sub{color:var(--muted);font-family:var(--font-code);font-size:.8rem;margin-bottom:2.5rem}
.about-section{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:2rem;margin-bottom:1.25rem}
.about-section h2{font-family:var(--font-display);font-size:1.1rem;font-weight:700;margin-bottom:.9rem;display:flex;align-items:center;gap:.5rem}
.about-section p{color:var(--text2);font-size:.85rem;font-family:var(--font-code);line-height:1.85}
.type-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.9rem}
.type-card{border-radius:var(--rs);padding:1.25rem;border:1px solid var(--border)}
.type-card.find{background:rgba(229,72,77,.06);border-color:rgba(229,72,77,.2)}
.type-card.fix{background:rgba(217,119,6,.05);border-color:rgba(217,119,6,.18)}
.type-card.pred{background:rgba(147,51,234,.06);border-color:rgba(147,51,234,.18)}
.type-card h3{font-size:.9rem;font-weight:700;margin-bottom:.4rem}
.type-card p{font-family:var(--font-code);font-size:.78rem;color:var(--muted);line-height:1.65}
.tech-stack{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.8rem}
.tech-badge{background:var(--card2);border:1px solid var(--border);border-radius:6px;padding:.3rem .75rem;font-family:var(--font-code);font-size:.72rem;color:var(--text2)}
.tech-badge.fe{border-color:rgba(113,50,245,.25);color:var(--teal);background:var(--teal-glow)}
.tech-badge.be{border-color:rgba(59,130,246,.25);color:var(--blue);background:rgba(59,130,246,.05)}
.tech-badge.db{border-color:rgba(20,158,97,.25);color:var(--green);background:rgba(20,158,97,.05)}
.dev-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;margin-top:1.1rem}
.dev-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.5rem;cursor:pointer;transition:border-color .25s,transform .25s,box-shadow .25s;position:relative;overflow:hidden;display:flex;align-items:center;gap:1.1rem}
.dev-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,var(--teal-glow),transparent);opacity:0;transition:opacity .3s}
.dev-card:hover{border-color:rgba(113,50,245,.35);transform:translateY(-4px);box-shadow:var(--glow-teal)}
.dev-card:hover::before{opacity:1}
.dev-avatar{width:60px;height:60px;border-radius:12px;overflow:hidden;flex-shrink:0;position:relative;z-index:1}
.dev-avatar.kamo{background:linear-gradient(135deg,var(--teal),var(--purple))}
.dev-avatar.bel{background:linear-gradient(135deg,var(--yellow),var(--orange))}
.dev-avatar img{width:100%;height:100%;object-fit:cover}
.dev-emoji{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.dev-info{position:relative;z-index:1}
.dev-name{font-family:var(--font-display);font-weight:700;font-size:1rem;margin-bottom:.1rem}
.dev-role{font-family:var(--font-code);font-size:.72rem;color:var(--teal);margin-bottom:.25rem}
.dev-hint{font-family:var(--font-code);font-size:.67rem;color:var(--muted)}
.dev-modal-body{display:flex;flex-direction:column;align-items:center;text-align:center;padding:.5rem 0}
.dev-modal-avatar{width:100px;height:100px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:2.8rem;margin:0 auto 1.1rem;overflow:hidden}
.dev-modal-avatar.kamo{background:linear-gradient(135deg,var(--teal),var(--purple))}
.dev-modal-avatar.bel{background:linear-gradient(135deg,var(--yellow),var(--orange))}
.dev-modal-name{font-family:var(--font-display);font-size:1.4rem;font-weight:800;margin-bottom:.2rem}
.dev-modal-role{font-family:var(--font-code);font-size:.76rem;color:var(--teal);margin-bottom:1.3rem}
.dev-info-grid{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;width:100%;text-align:left}
.dev-info-item{background:var(--card3);border:1px solid var(--border);border-radius:8px;padding:.65rem .9rem}
.dev-info-label{font-family:var(--font-code);font-size:.62rem;color:var(--muted);text-transform:uppercase;letter-spacing:.07em;margin-bottom:.18rem}
.dev-info-val{font-size:.82rem;font-weight:600;color:var(--text);line-height:1.5}
.dev-info-val a{color:var(--teal)}.dev-info-val a:hover{color:#fff;text-decoration:underline}

/* ── RESPONSIVE ── */
@media(max-width:1100px){
  .hero,.features-section,.cases-wrap,.roadmap-section{padding-left:2rem;padding-right:2rem}
  .ch-header{padding-left:2rem;padding-right:2rem}
  .challenge-arena{padding-left:2rem;padding-right:2rem}
  .features-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .hero{grid-template-columns:1fr;padding:3rem 1.5rem;gap:2rem}.hero-visual{order:-1}
  .features-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .badges-grid{grid-template-columns:repeat(3,1fr)}
  .opts-grid{grid-template-columns:1fr}
  .dev-grid{grid-template-columns:1fr}
  .lb-row{grid-template-columns:2.5rem 1fr 4rem 4.5rem}.lb-row span:nth-child(5),.lb-row span:nth-child(6){display:none}
  .lb-podium{grid-template-columns:1fr;max-width:300px;margin:0 auto 2rem}.podium-card.first{order:-1}
  .stats-charts{grid-template-columns:1fr}.type-grid{grid-template-columns:1fr}
  nav{padding:0 1rem}.nav-links a{padding:.35rem .55rem;font-size:.68rem}.nav-xp{display:none}
}
@media(max-width:600px){
  .stats-grid{grid-template-columns:1fr}.badges-grid{grid-template-columns:repeat(2,1fr)}.hero-stats{gap:1.5rem}
}
/* ── RANK BADGE ── */
.rank-badge{display:inline-flex;align-items:center;gap:.3rem;border-radius:6px;padding:.15rem .55rem;font-family:var(--font-code);font-size:.65rem;font-weight:800;letter-spacing:.04em;white-space:nowrap}
.nav-rank{display:flex;align-items:center}

/* ── ADAPTIVE TOGGLE (mirrors race-toggle) ── */
.adaptive-toggle{display:flex;align-items:center;gap:.5rem;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:.5rem .9rem;cursor:pointer;font-family:var(--font-code);font-size:.72rem;color:var(--muted);transition:all .2s}
.adaptive-toggle.on{border-color:var(--purple);color:var(--purple);background:rgba(147,51,234,.06)}
.adaptive-dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}
.adaptive-toggle.on .adaptive-dot{background:var(--purple);box-shadow:0 0 8px var(--purple)}
.topic-select{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:.5rem .8rem;color:var(--text);font-family:var(--font-code);font-size:.72rem;cursor:pointer}
.btn-random-topic{background:transparent;border:1px dashed var(--border);border-radius:8px;padding:.5rem .8rem;font-family:var(--font-code);font-size:.72rem;color:var(--muted);cursor:pointer;transition:all .18s}
.btn-random-topic:hover{border-color:var(--teal);color:var(--teal)}

/* ── OPEN / CODE CHALLENGE INPUTS ── */
.open-answer-box{padding:0 1.75rem 1rem}
.open-answer-box textarea,.code-answer-box textarea{width:100%;background:var(--card2);border:1px solid var(--border);border-radius:var(--rs);color:var(--text);font-family:var(--font-code);font-size:.85rem;padding:.9rem;min-height:90px;resize:vertical}
.open-answer-box textarea:focus,.code-answer-box textarea:focus{outline:none;border-color:var(--teal)}
.code-answer-box{padding:0 1.75rem 1rem}
.code-answer-box textarea{min-height:160px;line-height:1.6;tab-size:2}
.code-constraint-note{font-family:var(--font-code);font-size:.72rem;color:var(--orange);margin:.4rem 0 .6rem}
.code-run-result{font-family:var(--font-code);font-size:.78rem;padding:.7rem .9rem;border-radius:var(--rs);margin-top:.6rem}
.code-run-result.pass{background:rgba(20,158,97,.07);border:1px solid rgba(20,158,97,.2);color:var(--green)}
.code-run-result.fail{background:rgba(229,72,77,.07);border:1px solid rgba(229,72,77,.2);color:var(--red)}
.code-run-result.warn{background:rgba(217,119,6,.07);border:1px solid rgba(217,119,6,.2);color:var(--yellow);margin-top:.4rem}

/* ── ADMIN PAGE ── */
.admin-wrap{max-width:1100px;margin:0 auto;padding:3rem 2rem 5rem;width:100%}
.admin-tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}
.admin-tab{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:.6rem 1.1rem;font-family:var(--font-code);font-size:.78rem;color:var(--muted);cursor:pointer;transition:all .18s}
.admin-tab.active{border-color:var(--teal);color:var(--teal);background:var(--teal-glow)}
.admin-panel{display:none}
.admin-panel.active{display:block;animation:fadeUp .25s}
.admin-table{width:100%;background:var(--card);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;border-collapse:collapse}
.admin-table th{text-align:left;font-family:var(--font-code);font-size:.65rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);background:var(--card2);padding:.7rem 1rem}
.admin-table td{padding:.7rem 1rem;border-top:1px solid var(--border2);font-family:var(--font-code);font-size:.78rem;vertical-align:middle}
.admin-select{background:var(--card2);border:1px solid var(--border);border-radius:6px;color:var(--text);font-family:var(--font-code);font-size:.72rem;padding:.3rem .5rem}
.admin-btn{border:1px solid var(--border);background:transparent;border-radius:6px;padding:.35rem .7rem;font-family:var(--font-code);font-size:.68rem;cursor:pointer;color:var(--text2);margin-right:.3rem;transition:all .15s}
.admin-btn.danger:hover{border-color:var(--red);color:var(--red)}
.admin-btn.ok:hover{border-color:var(--green);color:var(--green)}
.admin-btn.warn:hover{border-color:var(--yellow);color:var(--yellow)}
.q-flag{display:inline-block;border-radius:5px;padding:.15rem .5rem;font-size:.65rem;font-weight:700}
.q-flag.easy{background:rgba(20,158,97,.12);color:var(--green)}
.q-flag.hard{background:rgba(229,72,77,.12);color:var(--red)}
.q-flag.ok{background:rgba(59,130,246,.12);color:var(--blue)}
.admin-stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:1.5rem}
.admin-stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.2rem;text-align:center}
.admin-stat-card .v{font-family:var(--font-display);font-size:1.6rem;font-weight:800;color:var(--teal)}
.admin-stat-card .l{font-family:var(--font-code);font-size:.68rem;color:var(--muted);margin-top:.3rem}
.admin-empty{padding:2.5rem;text-align:center;color:var(--muted);font-family:var(--font-code);font-size:.82rem}

/* ── CONTRIBUTE PAGE ── */
.contribute-wrap{max-width:800px;margin:0 auto;padding:3rem 2rem 5rem;width:100%}
.contrib-form{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.75rem}
.contrib-form .form-group{margin-bottom:1.1rem}
.contrib-form select.form-input{cursor:pointer}
.contrib-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.contrib-status-list{margin-top:2rem}
.contrib-status-item{background:var(--card);border:1px solid var(--border);border-radius:var(--rs);padding:.9rem 1.1rem;margin-bottom:.6rem;display:flex;justify-content:space-between;align-items:center;font-family:var(--font-code);font-size:.78rem}
.status-pill{border-radius:6px;padding:.2rem .6rem;font-size:.65rem;font-weight:700}
.status-pill.pending{background:rgba(217,119,6,.12);color:var(--yellow)}
.status-pill.approved{background:rgba(20,158,97,.12);color:var(--green)}
.status-pill.rejected{background:rgba(229,72,77,.12);color:var(--red)}

/* ── PROGRESS DYNAMICS (STATS) ── */
.dynamics-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:1.5rem;margin-bottom:1.5rem}
.dynamics-svg{width:100%;height:120px;display:block}
.dynamics-legend{display:flex;gap:1.2rem;font-family:var(--font-code);font-size:.7rem;color:var(--muted);margin-top:.6rem}
.dynamics-legend span{display:flex;align-items:center;gap:.35rem}
.dynamics-dot{width:8px;height:8px;border-radius:50%}
/* Responsive refinements for compact phones and touch screens. */
.svg-icon{width:1em;height:1em;vertical-align:-.12em;display:inline-block}
button,a,[role="button"]{touch-action:manipulation}
@media(max-width:900px){
  nav{height:auto;min-height:58px;flex-wrap:wrap;gap:.4rem;padding:.5rem .8rem}
  .nav-links{max-width:100%;overflow-x:auto;scrollbar-width:none;white-space:nowrap;padding:.15rem 0}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-right{margin-left:auto}
  main{padding-top:64px}
}
@media(max-width:600px){
  body{font-size:15px}
  nav{align-items:center}
  .nav-logo{font-size:.95rem}
  .nav-links{order:3;width:100%;justify-content:flex-start}
  .nav-links a{font-size:.65rem;padding:.45rem .6rem}
  .hero,.features-section,.cases-wrap,.roadmap-section,.challenge-arena,.ch-header{padding-left:1rem;padding-right:1rem}
  .hero{padding-top:2rem;padding-bottom:2rem}
  .hero h1{font-size:clamp(2rem,10vw,3.2rem)}
  .stats-grid,.features-grid,.dev-grid,.stats-charts{grid-template-columns:1fr}
  .badges-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lb-row{grid-template-columns:2rem minmax(0,1fr) 3rem 3.5rem;gap:.35rem;padding:.6rem .45rem}
  .lb-row span:nth-child(5),.lb-row span:nth-child(6){display:none}
  button,.btn{min-height:40px}
  .modal,.modal-content{max-width:calc(100vw - 1rem);max-height:90dvh;overflow:auto}
}
.svg-icon{display:inline-block;width:1.05em;height:1.05em;vertical-align:-.16em;object-fit:contain}
.dev-avatar{overflow:hidden}
.dev-avatar img{width:100%;height:100%;object-fit:cover;object-position:center 24%;border-radius:inherit}
.dev-avatar.kamo img{object-position:center 28%}
/* Signup profile form, consent notice, and mobile drawer */
.mobile-menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:10px;background:var(--card);align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;color:var(--text)}
.mobile-menu-toggle span{width:17px;height:2px;background:currentColor;border-radius:2px;transition:transform .2s,opacity .2s}
.mobile-menu-toggle.open span:first-child{transform:translateY(7px) rotate(45deg)}
.mobile-menu-toggle.open span:nth-child(2){opacity:0}
.mobile-menu-toggle.open span:last-child{transform:translateY(-7px) rotate(-45deg)}
.mobile-nav-backdrop{display:none}
.auth-profile-fields[hidden],#auth-school-group[hidden],#auth-school-other-group[hidden],.password-requirements[hidden]{display:none!important}
.modal-box{max-height:min(90vh,860px);overflow:auto;overscroll-behavior:contain}
.auth-profile-fields{margin:.2rem 0 .4rem}
.auth-profile-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 .85rem}
.auth-country-field{grid-column:1/-1}
#auth-school-group,#auth-school-other-group{margin-bottom:.8rem}
.form-input[type=date],select.form-input{color:var(--text);font-family:var(--font-ui);min-height:42px}
.form-input[type=date]::-webkit-calendar-picker-indicator{cursor:pointer;opacity:.75}
.password-requirements{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:.32rem .7rem;margin:.65rem 0 .1rem;padding:0;color:var(--muted);font-size:.64rem}
.password-requirements li{display:flex;align-items:center;gap:.38rem;line-height:1.3}
.password-requirements li>span:first-child{width:13px;height:13px;flex:none;display:inline-grid;place-items:center;border:1px solid var(--border-glow);border-radius:50%;color:transparent}
.password-requirements li.passed{color:var(--green)}
.password-requirements li.passed>span:first-child{border-color:var(--green);background:var(--green);color:white}
.password-requirements li.passed>span:first-child:after{content:'✓';font-size:9px;font-weight:700}
.cookie-consent{position:fixed;z-index:1200;left:1rem;right:1rem;bottom:1rem;max-width:900px;margin:auto;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.9rem;padding:1rem 1.1rem;background:rgba(255,255,255,.98);border:1px solid var(--border);border-radius:16px;box-shadow:0 14px 48px rgba(22,17,35,.2);color:var(--text)}
.cookie-consent[hidden]{display:none!important}
.cookie-consent-icon{width:38px;height:38px;display:grid;place-items:center;border-radius:11px;background:var(--teal-glow);color:var(--teal)}
.cookie-consent-icon svg{width:20px;height:20px}
.cookie-consent-copy strong{display:block;font-size:.84rem}
.cookie-consent-copy p{margin:.16rem 0 0;color:var(--muted);font-size:.72rem;line-height:1.45}
.cookie-consent-actions{display:flex;align-items:center;gap:.5rem}
.cookie-consent-actions button{min-height:38px;padding:0 .85rem;border:1px solid var(--border);border-radius:9px;background:white;color:var(--text2);font:600 .72rem var(--font-ui);cursor:pointer;white-space:nowrap}
.cookie-consent-actions .cookie-accept{background:var(--teal);border-color:var(--teal);color:white}
.cookie-consent-actions button:hover{filter:brightness(.97)}
@media(max-width:900px){
  nav{height:60px;padding:0 .85rem;gap:.55rem}
  .mobile-menu-toggle{display:flex;flex:none;position:relative;z-index:704}
  nav .nav-links{position:fixed;z-index:702;top:0;left:0;bottom:0;width:min(82vw,320px);height:100dvh;margin:0;padding:5rem 1rem 1.5rem;display:flex;flex-direction:column;align-items:stretch;gap:.3rem;overflow-y:auto;background:var(--card);border-right:1px solid var(--border);box-shadow:12px 0 35px rgba(25,18,44,.12);transform:translateX(-105%);visibility:hidden;transition:transform .22s ease,visibility .22s}
  nav .nav-links.open{transform:translateX(0);visibility:visible}
  nav .nav-links li{width:100%}
  nav .nav-links a{display:flex;align-items:center;min-height:44px;padding:.7rem .8rem;font-size:.8rem}
  .mobile-nav-backdrop.open{display:block;position:fixed;z-index:701;inset:0;background:rgba(17,13,27,.42);backdrop-filter:blur(2px)}
  .nav-right{margin-left:auto;gap:.35rem}
  .nav-xp{display:none}
  body.mobile-menu-open{overflow:hidden}
}
@media(max-width:600px){
  .auth-profile-grid{grid-template-columns:1fr;gap:0}
  .auth-country-field{grid-column:auto}
  .modal-box{width:calc(100vw - 1.2rem);max-height:calc(100dvh - 1.2rem);padding:1.1rem}
  .password-requirements{grid-template-columns:1fr 1fr;font-size:.6rem}
  .nav-logo{font-size:.95rem;gap:.4rem}
  .nav-logo img{width:34px!important;height:34px!important}
  .nav-right{gap:.25rem}
  .lang-toggle{transform:scale(.92);transform-origin:right center}
  .nav-user-btn{padding:.28rem .4rem}
  #nav-username-display{display:none}
  .cookie-consent{left:.6rem;right:.6rem;bottom:.6rem;grid-template-columns:auto 1fr;gap:.55rem;padding:.8rem;border-radius:13px}
  .cookie-consent-icon{width:32px;height:32px}
  .cookie-consent-copy strong{font-size:.78rem}
  .cookie-consent-copy p{font-size:.65rem}
  .cookie-consent-actions{grid-column:1/-1;justify-content:flex-end}
  .cookie-consent-actions button{flex:1}
}