/* Zu Online site - shared chrome (nav, footer, base) and app components (reg, account, forum).
   Design tokens and buttons live in zu.css; this file adds layout and reusable pieces so every
   page matches the landing. */

/* ---- base ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--f-body);color:var(--text);background:var(--ink);overflow-x:hidden;line-height:1.5}
img{max-width:100%;display:block}
a{color:inherit}
canvas#sky{position:fixed;inset:0;width:100%;height:100%;z-index:0;display:block;opacity:.85}
.wrap{position:relative;z-index:1}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* ---- top nav (shared by index.php, reg.php, forum.php via partials/nav.php) ---- */
.nav{position:fixed;top:0;left:0;right:0;z-index:20;transition:background .3s,backdrop-filter .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.solid{background:rgba(2,12,18,.82);backdrop-filter:blur(14px);border-color:var(--line)}
.nav .container{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px}
.nav ul.l,.nav ul.r{display:flex;gap:24px;list-style:none;font-size:13px;letter-spacing:.16em;text-transform:uppercase;align-items:center}
.nav ul.r{justify-content:flex-end}
.nav a{text-decoration:none;color:var(--dim);transition:color .2s}
.nav a:hover,.nav a.on{color:var(--gold)}
.brand{display:flex;flex-direction:column;align-items:center;text-decoration:none;line-height:1}
.brand b{font-family:var(--f-head);font-size:22px;letter-spacing:.18em}
.brand small{font-family:var(--f-brush);font-size:15px;color:var(--teal);margin-top:4px;letter-spacing:.3em}
.nav .cta{padding:9px 16px;font-size:12px;letter-spacing:.14em;border-radius:10px}
.nav ul.mob{display:none;flex-direction:column;list-style:none;position:absolute;left:0;right:0;top:72px;background:rgba(2,12,18,.97);border-bottom:1px solid var(--line);padding:4px 24px 12px}
.mob a{display:block;padding:14px 0;border-bottom:1px solid rgba(90,200,190,.12);font-size:13px;letter-spacing:.18em;text-transform:uppercase}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:10px;color:var(--gold);width:42px;height:42px;font-size:20px;cursor:pointer;justify-self:end}
@media (max-width:900px){
  .nav ul.l,.nav ul.r{display:none}
  .nav .container{grid-template-columns:auto 1fr auto}
  .nav .brand{grid-column:1;align-items:flex-start}
  .burger{display:block;grid-column:3}
  .nav.open ul.mob{display:flex}
}

/* ---- footer (shared) ---- */
footer{position:relative;z-index:1;border-top:1px solid var(--line);margin-top:96px;padding:34px 0 40px;background:rgba(2,10,14,.7)}
footer .container{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
footer .brand{align-items:flex-start}
footer nav{display:flex;gap:22px;flex-wrap:wrap;font-size:13px}
footer nav a{color:var(--dim);text-decoration:none}
footer nav a:hover{color:var(--gold)}
footer small{display:block;width:100%;color:#5e807a;font-size:12px;margin-top:6px}

/* ---- app page shell (reg/forum): clears the fixed nav ---- */
.app{position:relative;z-index:1;min-height:100vh;padding:104px 0 60px}
.app .container{max-width:1100px}
.app-head{text-align:center;margin-bottom:28px}
.app-head .zh{font-family:var(--f-brush);font-size:24px;color:rgba(70,230,220,.85)}
.app-head h1{font-family:var(--f-head);font-size:clamp(28px,4vw,40px)}
.app-head p{color:var(--dim);margin-top:8px}

/* ---- glass panel / card ---- */
.panel,.card{background:var(--card);border:1px solid var(--line);border-radius:18px;backdrop-filter:blur(12px)}
.card{padding:26px}
.authwrap{max-width:460px;margin:0 auto}

/* ---- form fields ---- */
.field{margin-top:16px}
.field label{display:block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);margin-bottom:7px}
.input{display:flex;align-items:center;gap:8px;background:rgba(2,14,18,.8);border:1px solid var(--line);border-radius:12px;padding:0 12px;transition:border-color .2s,box-shadow .2s}
.input:focus-within{border-color:var(--teal);box-shadow:0 0 0 4px rgba(70,230,220,.14)}
.input.bad{border-color:var(--bad)}
.input input,.input textarea,.input select{flex:1;background:none;border:0;outline:0;color:var(--text);font:inherit;padding:13px 2px;width:100%}
.input textarea{resize:vertical;min-height:120px;line-height:1.6}
.input .icon{font-size:14px;color:var(--dim)}
.msg{font-size:12px;margin-top:6px;min-height:14px;color:var(--dim)}
.msg.err{color:var(--bad)} .msg.ok{color:var(--good)}

/* banner note */
.note{display:none;margin-top:14px;padding:11px 14px;border-radius:10px;font-size:14px;border:1px solid var(--line)}
.note.on{display:block}
.note.err{color:#ffd9d2;border-color:rgba(255,122,107,.5);background:rgba(255,122,107,.1)}
.note.ok{color:#d6ffe4;border-color:rgba(124,245,154,.5);background:rgba(124,245,154,.1)}

/* small secondary button (zbtn is the primary, from zu.css) */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;border:1px solid var(--goldline);
  background:rgba(4,20,26,.55);color:var(--gold);border-radius:10px;padding:9px 16px;font:inherit;font-size:13px;font-weight:600;
  letter-spacing:.03em;text-decoration:none;transition:border-color .2s,background .2s,color .2s}
.btn:hover{border-color:var(--gold);background:rgba(255,222,160,.08)}
.btn.sm{padding:6px 11px;font-size:12px}
.btn.ghost{border-color:var(--line);color:var(--dim)}
.btn.ghost:hover{color:var(--text);border-color:var(--teal)}
.btn.danger{border-color:rgba(255,122,107,.45);color:var(--bad)}
.btn.danger:hover{background:rgba(255,122,107,.12);border-color:var(--bad)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.spread{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}

/* ---- tabs ---- */
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:18px}
.tabs button{background:none;border:0;border-bottom:2px solid transparent;color:var(--dim);font:inherit;font-weight:600;
  letter-spacing:.04em;padding:11px 14px;cursor:pointer;transition:color .2s,border-color .2s}
.tabs button:hover{color:var(--text)}
.tabs button.on{color:var(--gold);border-color:var(--gold)}
.pane{display:none}.pane.on{display:block}

/* ---- badge ---- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 9px;border-radius:999px;border:1px solid var(--line);color:var(--dim)}
.badge.bug{color:#ffd0c8;border-color:rgba(255,122,107,.5);background:rgba(255,122,107,.1)}
.badge.idea{color:#fff0cf;border-color:var(--goldline);background:rgba(255,222,160,.08)}
.badge.talk{color:#c9fff4;border-color:rgba(70,230,220,.4);background:rgba(70,230,220,.08)}
.badge.user{color:#d5e5e0;border-color:var(--line)}

/* ---- modal ---- */
.modal{position:fixed;inset:0;z-index:60;display:none;align-items:center;justify-content:center;padding:24px;
  background:rgba(2,10,14,.72);backdrop-filter:blur(4px)}
.modal.on{display:flex}
.modal .box{width:100%;max-width:520px;background:#06232b;border:1px solid var(--goldline);border-radius:18px;padding:24px;
  box-shadow:0 30px 80px rgba(0,0,0,.6)}
.modal h3{font-family:var(--f-head);font-size:22px;color:var(--gold)}
.modal .box .row{margin-top:20px;justify-content:flex-end}

/* ---- toast ---- */
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);z-index:80;background:#0b3a33;color:#eafff6;
  border:1px solid rgba(124,245,154,.4);border-radius:12px;padding:12px 20px;font-size:14px;opacity:0;pointer-events:none;
  transition:opacity .25s,transform .25s}
.toast.on{opacity:1;transform:translate(-50%,0)}
.toast.err{background:#3a1512;border-color:rgba(255,122,107,.5);color:#ffe2dc}

/* ---- forum ---- */
.breadcrumb{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--dim);margin-bottom:16px}
.breadcrumb a{color:var(--teal);text-decoration:none}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb .sep{opacity:.5}

.flist{display:grid;gap:12px}
.frow{display:flex;align-items:center;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card);
  text-decoration:none;color:inherit;transition:border-color .25s,transform .2s,box-shadow .25s}
.frow:hover{border-color:var(--goldline);transform:translateY(-2px);box-shadow:0 16px 36px rgba(0,0,0,.4)}
.frow .ico{flex:0 0 auto;width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:22px;
  border:1px solid var(--line);background:rgba(2,14,18,.6)}
.frow .main{flex:1;min-width:0}
.frow .main h3{font-family:var(--f-head);font-size:19px;color:#eef7f4;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.frow .main p{color:var(--dim);font-size:13px;margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.frow .stat{flex:0 0 auto;text-align:center;min-width:64px}
.frow .stat b{display:block;color:var(--gold);font-size:17px}
.frow .stat span{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.frow .last{flex:0 0 auto;text-align:right;font-size:12px;color:var(--dim);min-width:130px}
.frow .last b{color:var(--text);font-weight:600}
.pin{color:var(--gold)}.lock{color:var(--dim)}

.fempty{text-align:center;color:var(--dim);padding:46px 20px;border:1px dashed var(--line);border-radius:14px}

/* thread view */
.posts{display:grid;gap:14px}
.post{display:flex;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.post.op{border-color:var(--goldline)}
.post .av{flex:0 0 auto;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-family:var(--f-head);
  font-size:20px;color:#062026;background:linear-gradient(135deg,var(--teal),var(--gold))}
.post .main{flex:1;min-width:0}
.post .who{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--dim)}
.post .who b{color:var(--gold);font-weight:700}
.post .who .staff{font-size:10px;padding:2px 7px;border-radius:999px;border:1px solid var(--goldline);color:var(--gold)}
.post .text{margin-top:10px;color:#dfeeea;line-height:1.7;white-space:pre-wrap;word-wrap:break-word}
.post .text a{color:var(--teal)}
.post .acts{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}
.replybox{margin-top:18px}

@media (max-width:640px){
  .frow .stat,.frow .last{display:none}
  .app{padding-top:92px}
}