:root{
  --bg:#f4f5fa; --surface:#fff; --surface-2:#f8f9fc; --line:#e6e8f0; --text:#1d2033; --muted:#7a7f99;
  --primary:#5b5bd6; --primary-2:#4747c2; --primary-soft:#ececfd;
  --danger:#e5484d; --ok:#30a46c; --warn:#f5a524;
  --c-new:#5b5bd6; --c-in_progress:#0091ff; --c-waiting:#f5a524; --c-testing:#8e4ec6; --c-done:#30a46c;
  --radius:14px; --shadow:0 1px 2px rgba(20,22,50,.04),0 4px 16px rgba(20,22,50,.06);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#111218; --surface:#1a1b24; --surface-2:#20212c; --line:#2b2d3a; --text:#eceef7; --muted:#8b8fa8;
  --primary-soft:#26264a; --shadow:0 1px 2px rgba(0,0,0,.3),0 4px 16px rgba(0,0,0,.25);
}}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:Vazirmatn,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);font-size:14.5px;line-height:1.7}
a{color:var(--primary);text-decoration:none}
h1{font-size:1.5rem;margin:0 0 .25rem;font-weight:800}
h2{font-size:1.05rem;margin:0 0 1rem;font-weight:700}
.muted{color:var(--muted)} small{font-size:.8em}

/* ---------- Top bar ---------- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:1.5rem;padding:.6rem 1.5rem;
  background:color-mix(in srgb,var(--surface) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:800;color:var(--text);white-space:nowrap}
.logo{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#fff;font-weight:900;
  background:linear-gradient(135deg,#7b6cf6,#4a8cff)}
.logo.big{width:56px;height:56px;font-size:1.6rem;border-radius:16px;margin:0 auto 1rem}
.nav{display:flex;gap:.25rem;flex:1}
.nav a{padding:.4rem .9rem;border-radius:10px;color:var(--muted);font-weight:600}
.nav a:hover{background:var(--surface-2);color:var(--text)}
.nav a.on{background:var(--primary-soft);color:var(--primary)}
.userbox{display:flex;align-items:center;gap:.75rem}
.home-link{display:inline-flex;align-items:center;gap:.35rem;font-size:.82rem;font-weight:600;color:var(--muted);padding:.25rem .65rem;border:1px solid var(--line);border-radius:8px;white-space:nowrap}
.home-link:hover{color:var(--primary);border-color:var(--primary)}
.who{display:flex;align-items:center;gap:.5rem;color:var(--text)}
.who-text{display:flex;flex-direction:column;line-height:1.3}
.who-text small{color:var(--muted)}
.lang{font-weight:700;font-size:.8rem;border:1px solid var(--line);border-radius:8px;padding:.2rem .55rem;color:var(--muted)}
.avatar{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;flex:none;font-weight:700;
  background:var(--primary-soft);color:var(--primary)}
.avatar.xs{width:24px;height:24px;font-size:.75rem}
.avatar.lg{width:56px;height:56px;font-size:1.4rem}

.container{max-width:1100px;margin:0 auto;padding:1.75rem 1.5rem 3rem}
.container.wide{max-width:none}
.narrow{max-width:720px;margin:0 auto}

/* ---------- Buttons & forms ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:1px solid transparent;cursor:pointer;
  font:inherit;font-weight:600;padding:.55rem 1.1rem;border-radius:10px;transition:.15s;white-space:nowrap}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-2)}
.btn.ghost{background:var(--surface);border-color:var(--line);color:var(--text)}
.btn.ghost:hover{background:var(--surface-2)}
.btn.danger{background:transparent;border-color:color-mix(in srgb,var(--danger) 40%,transparent);color:var(--danger)}
.btn.danger:hover{background:var(--danger);color:#fff}
.btn.sm{padding:.3rem .7rem;font-size:.85rem;border-radius:8px}
.btn.block{width:100%}
.form{display:flex;flex-direction:column;gap:1rem}
.form label{display:flex;flex-direction:column;gap:.35rem;font-weight:600;font-size:.88rem}
input,select,textarea{font:inherit;color:var(--text);background:var(--surface-2);border:1px solid var(--line);
  border-radius:10px;padding:.6rem .8rem;width:100%;transition:.15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);background:var(--surface)}
textarea{resize:vertical}
.form label.check{flex-direction:row;align-items:center;gap:.5rem}
.form label.check input{width:auto}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.actions{display:flex;gap:.5rem}
.seg{display:flex;background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:3px}
.seg input{display:none}
.seg label{flex:1;text-align:center;padding:.4rem;border-radius:8px;cursor:pointer;font-weight:600;color:var(--muted)}
.seg input:checked+label{background:var(--surface);color:var(--primary);box-shadow:var(--shadow)}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow);margin-bottom:1.25rem}

.alert{padding:.75rem 1rem;border-radius:10px;margin-bottom:1rem;font-weight:600}
.alert.success{background:color-mix(in srgb,var(--ok) 14%,transparent);color:var(--ok)}
.alert.error{background:color-mix(in srgb,var(--danger) 14%,transparent);color:var(--danger)}
.alert.warn{background:color-mix(in srgb,var(--warn) 18%,transparent);color:#b87800}

/* ---------- Login ---------- */
.login-wrap{min-height:85vh;display:grid;place-items:center}
.login-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:2.25rem;box-shadow:var(--shadow)}
.login-head{text-align:center;margin-bottom:1.5rem}
.login-head p{color:var(--muted);margin:.25rem 0 0}
.login-foot{text-align:center;margin-top:1.25rem;font-size:.85rem}

/* ---------- Kanban ---------- */
.board-head{display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;flex-wrap:wrap;margin-bottom:1.25rem}
.board-head p{margin:0}
.filters{display:flex;gap:.5rem;flex-wrap:wrap}
.filters input,.filters select{width:auto;min-width:180px;background:var(--surface)}
.kanban{display:grid;grid-template-columns:repeat(5,minmax(250px,1fr));gap:1rem;overflow-x:auto;padding-bottom:1rem;align-items:start}
.col{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;max-height:calc(100vh - 190px)}
.col-head{display:flex;align-items:center;gap:.5rem;padding:.85rem 1rem;border-bottom:1px solid var(--line)}
.col-head h2{margin:0;font-size:.95rem;flex:1}
.col-head .dot{width:10px;height:10px;border-radius:50%;background:var(--accent)}
.col-head .count{font-size:.75rem;font-weight:700;padding:0 .55rem;border-radius:20px;background:color-mix(in srgb,var(--accent) 15%,transparent);color:var(--accent)}
.col-body{padding:.75rem;display:flex;flex-direction:column;gap:.65rem;overflow-y:auto;min-height:120px;flex:1;border-radius:0 0 var(--radius) var(--radius);transition:background .15s}
.col-body.over{background:color-mix(in srgb,var(--accent) 8%,transparent)}
.col-body .empty{display:none;text-align:center;color:var(--muted);font-size:.85rem;padding:1.5rem 0;border:2px dashed var(--line);border-radius:10px}
.col-body .empty:only-child{display:block}
.col-new{--accent:var(--c-new)} .col-in_progress{--accent:var(--c-in_progress)} .col-waiting{--accent:var(--c-waiting)}
.col-testing{--accent:var(--c-testing)} .col-done{--accent:var(--c-done)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:.8rem .9rem;cursor:grab;
  box-shadow:0 1px 2px rgba(20,22,50,.04);transition:transform .12s,box-shadow .12s;border-inline-start:3px solid var(--pc)}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.card.dragging{opacity:.45;transform:rotate(2deg)}
.col-done .card .card-title{text-decoration:line-through;color:var(--muted)}
.card-top{display:flex;align-items:center;gap:.4rem;margin-bottom:.35rem}
.tid{margin-inline-start:auto;color:var(--muted);font-size:.78rem;font-weight:600;direction:ltr}
.card-title{display:block;color:var(--text);font-weight:700;line-height:1.55;margin-bottom:.5rem;word-break:break-word}
.card-title:hover{color:var(--primary)}
.card-meta{display:flex;gap:.5rem;flex-wrap:wrap;font-size:.78rem;margin-bottom:.5rem}
.card-meta .co{color:var(--muted);background:var(--surface-2);padding:0 .5rem;border-radius:6px}
.card-foot{display:flex;align-items:center;gap:.5rem;font-size:.75rem}
.card-foot .cmt{margin-inline-start:auto}
.card-foot .cmt+.cmt{margin-inline-start:0}

.tag{font-size:.72rem;font-weight:700;padding:.05rem .5rem;border-radius:6px;background:var(--surface-2);color:var(--muted)}
.tag.type-bug{background:color-mix(in srgb,var(--danger) 13%,transparent);color:var(--danger)}
.tag.type-feature{background:color-mix(in srgb,var(--c-in_progress) 13%,transparent);color:var(--c-in_progress)}
.tag.type-support{background:color-mix(in srgb,var(--c-testing) 13%,transparent);color:var(--c-testing)}
.prio{display:inline-flex;align-items:center;gap:.3rem;font-weight:600}
.prio i{width:8px;height:8px;border-radius:50%;background:var(--pc)}
.prio-low{--pc:#9aa0b8} .prio-medium{--pc:#0091ff} .prio-high{--pc:#f5a524} .prio-critical{--pc:#e5484d}
.badge{font-size:.75rem;font-weight:700;padding:.1rem .6rem;border-radius:20px;color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent)}
.st-new{--accent:var(--c-new)} .st-in_progress{--accent:var(--c-in_progress)} .st-waiting{--accent:var(--c-waiting)}
.st-testing{--accent:var(--c-testing)} .st-done{--accent:var(--c-done)}

/* ---------- Ticket page ---------- */
.back{display:inline-block;margin-bottom:1rem;font-weight:600}
.ticket-layout{display:grid;grid-template-columns:1fr 290px;gap:1.25rem;align-items:start}
.ticket-side{position:sticky;top:80px}
.ticket-title{margin:.4rem 0 1rem}
.ticket-desc{white-space:normal;word-break:break-word}
.attach{margin-top:1.25rem;display:flex;flex-direction:column;gap:.6rem;align-items:flex-start}
.attach img{max-width:100%;max-height:360px;border-radius:10px;border:1px solid var(--line)}
.meta{display:grid;grid-template-columns:auto 1fr;gap:.5rem 1rem;margin:1rem 0;font-size:.88rem}
.meta dt{color:var(--muted)} .meta dd{margin:0;font-weight:600}
.ticket-side .form{margin-bottom:1rem}
.timeline{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}
.msg{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:.75rem 1rem;max-width:88%}
.msg.mine{margin-inline-start:auto;background:var(--primary-soft);border-color:transparent}
.msg.staff:not(.mine){border-inline-start:3px solid var(--primary)}
.msg-head{display:flex;align-items:center;gap:.5rem;font-size:.82rem;margin-bottom:.3rem}
.msg-head .muted{margin-inline-start:auto}
.msg-body{word-break:break-word}
.sys{text-align:center;font-size:.8rem;color:var(--muted);display:flex;gap:.4rem;justify-content:center;align-items:center;flex-wrap:wrap}
.comment-form .actions{justify-content:flex-end}

/* ---------- Admin ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin:1rem 0 1.5rem}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.2rem;box-shadow:var(--shadow)}
.stat span{color:var(--muted);font-size:.85rem;display:block}
.stat b{font-size:1.7rem}
.tabs{display:flex;gap:.25rem;border-bottom:1px solid var(--line);margin-bottom:1.25rem}
.tabs a{padding:.6rem 1.2rem;color:var(--muted);font-weight:700;border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs a.on{color:var(--primary);border-color:var(--primary)}
.admin-grid{display:grid;grid-template-columns:320px 1fr;gap:1.25rem;align-items:start}
.table-wrap{overflow-x:auto;padding:0}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:.75rem 1rem;text-align:start;border-bottom:1px solid var(--line);vertical-align:middle}
.table th{font-size:.8rem;color:var(--muted);background:var(--surface-2);font-weight:700}
.table tr:last-child td{border-bottom:none}
.table tr.dim td{opacity:.5}
.row-actions{display:flex;gap:.4rem}
.pill{font-size:.75rem;font-weight:700;padding:.1rem .6rem;border-radius:20px}
.pill.ok{background:color-mix(in srgb,var(--ok) 14%,transparent);color:var(--ok)}
.pill.off{background:var(--surface-2);color:var(--muted)}
.pill.admin{background:var(--primary-soft);color:var(--primary)}
.profile{display:flex;gap:1rem;align-items:center}

/* ---------- Toast ---------- */
.toast{position:fixed;bottom:20px;inset-inline-start:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);
  padding:.6rem 1.2rem;border-radius:10px;font-weight:600;opacity:0;transition:.25s;pointer-events:none;z-index:50}
[dir=rtl] .toast{transform:translateX(50%)}
.toast.show{opacity:1}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .ticket-layout,.admin-grid{grid-template-columns:1fr}
  .ticket-side{position:static}
  .stats{grid-template-columns:repeat(2,1fr)}
  .who-text,.home-link .txt{display:none}
}
@media (max-width:640px){
  .topbar{flex-wrap:wrap;gap:.6rem;padding:.6rem 1rem}
  .nav{order:3;flex-basis:100%;overflow-x:auto}
  .userbox{margin-inline-start:auto}
  .container{padding:1.25rem 1rem 2rem}
  .row2{grid-template-columns:1fr}
  .kanban{grid-template-columns:repeat(5,85vw);scroll-snap-type:x mandatory}
  .col{scroll-snap-align:start}
  .filters,.filters input,.filters select{width:100%}
}