:root{
  --bg:#0a0b0d; --bg-soft:#101218; --card:#14161d; --card-hover:#191c25;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
  --text:#f4f6f8; --muted:#8b929c; --accent:#ccff00; --accent-soft:#aadd00;
  --danger:#ff5d5d; --ok:#74e000;
  --radius:18px; --maxw:1180px; --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;min-height:100vh}
a{color:inherit;text-decoration:none}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(60vw 50vh at 80% -10%,rgba(204,255,0,.10),transparent 60%),radial-gradient(50vw 40vh at 0% 5%,rgba(204,255,0,.05),transparent 60%)}

/* brand */
.brand{display:flex;align-items:center;gap:11px}
.brand-name{font-family:'Anton',sans-serif;letter-spacing:.5px;font-size:1.3rem;line-height:1;text-transform:uppercase}
.brand-accent{color:var(--accent);margin-left:.18em}
.brand-ball{width:17px;height:17px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#eaff66,var(--accent) 60%,var(--accent-soft));box-shadow:0 0 14px rgba(204,255,0,.5);flex:0 0 auto}

/* header */
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:15px clamp(18px,4vw,42px);background:rgba(10,11,13,.72);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px}
.nav a{color:var(--muted);font-weight:500;font-size:.94rem;transition:color .2s}
.nav a:hover{color:var(--text)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;font-size:.96rem;cursor:pointer;border:1px solid transparent;font-family:inherit;transition:transform .18s var(--ease),background .2s,border-color .2s,color .2s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#0a0b0d}
.btn-primary:hover{background:#dbff3a;transform:translateY(-2px)}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* hero */
.hero{max-width:var(--maxw);margin:0 auto;padding:clamp(48px,8vw,100px) clamp(18px,4vw,42px) clamp(30px,4vw,50px);text-align:center}
.eyebrow{text-transform:uppercase;letter-spacing:.22em;font-size:.78rem;font-weight:600;color:var(--accent);margin-bottom:18px}
.hero h1{font-family:'Anton',sans-serif;font-size:clamp(2.6rem,7vw,5rem);line-height:.95;letter-spacing:.5px;text-transform:uppercase}
.hero h1 .hl{color:var(--accent);text-shadow:0 0 38px rgba(204,255,0,.35)}
.hero p.sub{color:var(--muted);font-size:clamp(1.02rem,1.5vw,1.2rem);margin:22px auto 32px;max-width:60ch}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* steps / features */
.steps{max-width:var(--maxw);margin:0 auto;padding:20px clamp(18px,4vw,42px) 80px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:transform .22s var(--ease),border-color .22s}
.step:hover{transform:translateY(-5px);border-color:var(--line-strong)}
.step .num{font-family:'Anton',sans-serif;font-size:1.5rem;color:var(--accent);margin-bottom:10px}
.step h3{font-size:1.12rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.95rem}

/* auth card */
.auth-wrap{min-height:calc(100vh - 70px);display:grid;place-items:center;padding:40px 18px}
.auth-card{width:100%;max-width:440px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,4vw,38px);box-shadow:0 30px 70px -40px rgba(0,0,0,.9)}
.auth-card h1{font-family:'Anton',sans-serif;font-size:1.9rem;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
.auth-card .lead{color:var(--muted);margin-bottom:24px;font-size:.95rem}
.field{margin-bottom:16px}
.field label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:7px;font-weight:500}
.field input[type=text],.field input[type=email],.field input[type=password]{width:100%;padding:12px 14px;border-radius:12px;background:var(--bg-soft);border:1px solid var(--line);color:var(--text);font-family:inherit;font-size:.97rem;transition:border-color .2s,background .2s}
.field input:focus{outline:none;border-color:var(--accent);background:#0d0f15}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.86rem;color:var(--muted);margin-bottom:14px;cursor:pointer}
.check input{margin-top:3px;accent-color:var(--accent);width:16px;height:16px;flex:0 0 auto}
.check a{color:var(--accent)}
.auth-alt{text-align:center;margin-top:20px;color:var(--muted);font-size:.92rem}
.auth-alt a{color:var(--accent);font-weight:600}
.msg{padding:11px 14px;border-radius:10px;font-size:.9rem;margin-bottom:16px;display:none}
.msg.show{display:block}
.msg.err{background:rgba(255,93,93,.12);border:1px solid rgba(255,93,93,.4);color:#ffb3b3}
.msg.ok{background:rgba(116,224,0,.12);border:1px solid rgba(116,224,0,.4);color:#cdf78a}

/* app dashboard */
.app-main{max-width:var(--maxw);margin:0 auto;padding:clamp(30px,5vw,60px) clamp(18px,4vw,42px)}
.welcome{font-family:'Anton',sans-serif;font-size:clamp(1.8rem,4vw,2.6rem);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.welcome .hl{color:var(--accent)}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin-top:24px}
.panel h2{font-size:1.2rem;margin-bottom:10px}
.panel p{color:var(--muted)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:.8rem;font-weight:600}
.badge.warn{background:rgba(255,196,0,.12);border:1px solid rgba(255,196,0,.4);color:#ffd861}
.badge.ok{background:rgba(116,224,0,.12);border:1px solid rgba(116,224,0,.4);color:#cdf78a}

/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:40px;padding:38px clamp(18px,4vw,42px);display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.foot-links{display:flex;gap:22px;flex-wrap:wrap;justify-content:center}
.foot-links a{color:var(--muted);transition:color .2s}
.foot-links a:hover{color:var(--accent)}
.foot-copy{color:#5d636c;font-size:.84rem}

/* tabs */
.tabs{display:flex;gap:8px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:0}
.tab{background:transparent;border:none;border-bottom:2px solid transparent;color:var(--muted);font-family:inherit;font-size:.96rem;font-weight:600;padding:10px 6px;margin-bottom:-1px;cursor:pointer;transition:color .2s,border-color .2s;display:inline-flex;align-items:center;gap:7px}
.tab:hover{color:var(--text)}
.tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.tab-count{background:rgba(255,255,255,.08);color:var(--text);border-radius:999px;font-size:.72rem;min-width:18px;height:18px;display:inline-grid;place-items:center;padding:0 5px}
.tab.active .tab-count{background:var(--accent);color:#0a0b0d}
.tab-count:empty{display:none}

/* tournament cards */
.t-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.t-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;display:flex;flex-direction:column;gap:9px;transition:transform .2s var(--ease),border-color .2s}
.t-card:hover{transform:translateY(-5px);border-color:var(--accent)}
.t-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:2px}
.t-size{color:var(--muted);font-size:.82rem;white-space:nowrap}
.t-card h3{font-size:1.18rem;line-height:1.25}
.t-meta{color:var(--muted);font-size:.9rem}
.t-close{color:var(--muted);font-size:.82rem;min-height:1em}
.t-status{font-size:.88rem;color:#cdf78a;background:rgba(116,224,0,.10);border:1px solid rgba(116,224,0,.3);border-radius:9px;padding:7px 10px}
.t-status.muted{color:var(--muted);background:transparent;border:1px dashed var(--line);}
.t-status b{color:#eaffa0}
.t-cta{margin-top:4px;align-self:flex-start;background:var(--accent);color:#0a0b0d;font-weight:700;font-size:.92rem;padding:9px 16px;border-radius:999px;transition:transform .15s var(--ease),background .2s}
.t-card:hover .t-cta{transform:translateX(2px);background:#dbff3a}

/* admin form */
.admin-players textarea{width:100%;min-height:200px;padding:14px;border-radius:12px;background:var(--bg-soft);border:1px solid var(--line);color:var(--text);font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92rem;line-height:1.7;resize:vertical}
.admin-players textarea:focus{outline:none;border-color:var(--accent)}
.hint{color:var(--muted);font-size:.85rem;margin-top:6px}

/* bracket — arbre de tournoi (deux côtés + lignes de connexion en L vers la finale centrale) */
:root{--conn:rgba(255,255,255,.22);--conn-on:rgba(204,255,0,.7)}
.bracket-wrap{overflow-x:auto;padding:10px 2px 28px;-webkit-overflow-scrolling:touch;
  background:radial-gradient(120% 90% at 50% 50%,rgba(204,255,0,.05),transparent 70%);border-radius:18px}
.bracket{display:flex;align-items:stretch;min-width:max-content;min-height:560px}
.side{display:flex}
.round-col{display:flex;flex-direction:column;min-width:176px;padding:0 18px}
.center-col{position:relative;display:flex;flex-direction:column;min-width:200px;padding:0 18px}
.round-head{font-family:'Anton',sans-serif;text-transform:uppercase;letter-spacing:.4px;font-size:.78rem;color:var(--muted);text-align:center;height:20px;margin-bottom:10px}
.round-body{flex:1;display:flex;flex-direction:column}
.match-wrap{flex:1;display:flex;align-items:center;position:relative}
.match{position:relative;width:100%;background:var(--card);border:1px solid var(--line-strong);border-radius:9px;overflow:hidden;box-shadow:0 6px 18px -12px rgba(0,0,0,.8)}
.slot{display:flex;align-items:center;gap:8px;padding:9px 11px;cursor:pointer;border:none;background:transparent;color:var(--text);width:100%;text-align:left;font-family:inherit;font-size:.9rem;transition:background .15s}
.slot+.slot{border-top:1px solid var(--line)}
.slot:hover:not(:disabled){background:var(--card-hover)}
.slot.picked{background:rgba(204,255,0,.16);color:#eaffa0;font-weight:600}
.slot.picked .seed{background:var(--accent);color:#0a0b0d}
.slot:disabled{cursor:default}
.slot .seed{min-width:18px;height:18px;display:inline-grid;place-items:center;font-size:.72rem;color:var(--muted);background:rgba(255,255,255,.06);border-radius:4px}
.slot .seed:empty{background:transparent}
.slot .nm{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.slot.empty{color:var(--muted);font-style:italic;cursor:default}
.slot.winner-real{box-shadow:inset 3px 0 0 var(--ok)}
.side.right .slot{flex-direction:row-reverse;text-align:right}

/* ---- connecteurs CÔTÉ GAUCHE (lignes vers la droite) ---- */
.side.left .match-wrap::after{content:"";position:absolute;left:100%;width:18px;top:50%;height:2px;background:var(--conn)}
.side.left .round-col:not(:last-child) .match-wrap:nth-child(odd)::before{content:"";position:absolute;left:calc(100% + 18px);top:50%;width:2px;height:50%;background:var(--conn)}
.side.left .round-col:not(:last-child) .match-wrap:nth-child(even)::before{content:"";position:absolute;left:calc(100% + 18px);bottom:50%;width:2px;height:50%;background:var(--conn)}
.side.left .round-col:not(:first-child) .match::before{content:"";position:absolute;right:100%;width:18px;top:50%;height:2px;background:var(--conn)}

/* ---- connecteurs CÔTÉ DROIT (miroir, lignes vers la gauche) ---- */
.side.right .match-wrap::after{content:"";position:absolute;right:100%;width:18px;top:50%;height:2px;background:var(--conn)}
.side.right .round-col:not(:first-child) .match-wrap:nth-child(odd)::before{content:"";position:absolute;right:calc(100% + 18px);top:50%;width:2px;height:50%;background:var(--conn)}
.side.right .round-col:not(:first-child) .match-wrap:nth-child(even)::before{content:"";position:absolute;right:calc(100% + 18px);bottom:50%;width:2px;height:50%;background:var(--conn)}
.side.right .round-col:not(:last-child) .match::after{content:"";position:absolute;left:100%;width:18px;top:50%;height:2px;background:var(--conn)}

/* ---- finale au centre ---- */
.center-col .match{border-color:var(--accent);box-shadow:0 0 26px -8px rgba(204,255,0,.4)}
.center-col .match::before{content:"";position:absolute;right:100%;width:18px;top:50%;height:2px;background:var(--conn)}
.center-col .match::after{content:"";position:absolute;left:100%;width:18px;top:50%;height:2px;background:var(--conn)}
.champion-box{position:absolute;left:14px;right:14px;bottom:14px;background:linear-gradient(180deg,rgba(204,255,0,.16),rgba(204,255,0,.03));border:1px solid var(--accent);border-radius:14px;padding:14px 12px;text-align:center}
.champion-box .lbl{font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:6px}
.champion-box .who{font-family:'Anton',sans-serif;font-size:1.15rem}

.save-bar{position:sticky;bottom:0;background:linear-gradient(transparent,var(--bg) 40%);padding:18px 0 6px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:10px}
.save-state{color:var(--muted);font-size:.9rem}

@media (max-width:760px){.steps{grid-template-columns:1fr}}
@media (max-width:480px){.row2{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}