/* AK VPN - mobile-first, light/dark via CSS variables. No external fonts (CSP). */
:root{--bg:#f4f6fa;--card:#fff;--text:#18202b;--muted:#647083;--line:#dfe4ec;--primary:#0f6fde;--primary-t:#fff;--danger:#d93636;--ok:#159a52;--warn:#b7791f;--gray:#7a8597;--radius:12px;--shadow:0 1px 3px rgba(16,24,40,.08)}
html[data-theme=dark]{--bg:#0e131a;--card:#171e28;--text:#e5eaf1;--muted:#94a0b2;--line:#2a3443;--primary:#4d9bff;--primary-t:#0b1220;--shadow:none}
@media (prefers-color-scheme:dark){html[data-theme=auto]{--bg:#0e131a;--card:#171e28;--text:#e5eaf1;--muted:#94a0b2;--line:#2a3443;--primary:#4d9bff;--primary-t:#0b1220;--shadow:none}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Gujarati","Shruti",sans-serif}
a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:1.45rem;margin:.2rem 0 1rem}h2{font-size:1.1rem;margin:0 0 .6rem}
code,.mono,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em}
.break{word-break:break-all}.nowrap{white-space:nowrap}.small{font-size:.86rem}.muted{color:var(--muted)}.center{text-align:center}.text-danger{color:var(--danger)}
.topbar{position:sticky;top:0;z-index:5;display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;padding:.6rem 1rem;background:var(--card);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:700;color:var(--text)}
.menu-btn{margin-left:auto;font-size:1.3rem;background:none;border:0;color:var(--text);cursor:pointer}
.nav{display:none;width:100%;flex-direction:column;gap:.15rem;padding:.4rem 0}
.nav.open{display:flex}
.nav a,.nav .link{padding:.5rem .6rem;border-radius:8px;color:var(--text);text-align:left}
.nav a.active{background:var(--bg);font-weight:600}
.nav form{margin:0}
.link{background:none;border:0;font:inherit;cursor:pointer;color:var(--muted)}
.prefs{display:flex;gap:.3rem;flex-wrap:wrap;align-items:center;margin:.4rem 0}
.chip{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:99px;padding:.15rem .6rem;cursor:pointer;font:inherit;font-size:.85rem}
.chip.on{border-color:var(--primary);color:var(--primary)}
@media(min-width:900px){.menu-btn{display:none}.nav{display:flex;width:auto;flex-direction:row;flex-wrap:wrap;align-items:center;margin-left:auto;padding:0}.prefs{margin:0 0 0 .4rem}}
.container{max-width:1180px;margin:0 auto;padding:1rem}
.narrow{max-width:440px;margin:2rem auto;padding:1rem}.narrow.wide{max-width:720px}
.brand-big h1{margin:.3rem 0 1rem}
.footer{text-align:center;color:var(--muted);font-size:.8rem;padding:2rem 1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem;margin-bottom:1rem;box-shadow:var(--shadow)}
.stack{display:flex;flex-direction:column;gap:.75rem}
.grid2{display:grid;gap:1rem;grid-template-columns:1fr}@media(min-width:800px){.grid2{grid-template-columns:1fr 1fr}}
.cards{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.row{display:flex;gap:.6rem;flex-wrap:wrap}.row>*{flex:1 1 140px}
.page-head{display:flex;justify-content:space-between;align-items:center;gap:.6rem;flex-wrap:wrap}
.tiles{display:grid;gap:.8rem;grid-template-columns:repeat(2,1fr);margin-bottom:1rem}@media(min-width:800px){.tiles{grid-template-columns:repeat(5,1fr)}}
.tile{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:.8rem;display:flex;flex-direction:column;gap:.15rem;box-shadow:var(--shadow)}
.tile span{color:var(--muted);font-size:.82rem}.tile span.badge{color:#fff}.tile b{font-size:1.5rem}.tile b.small-b{font-size:1rem}.tile small{color:var(--muted)}
label{display:flex;flex-direction:column;gap:.3rem;font-weight:600;font-size:.9rem}
label.check{flex-direction:row;align-items:center;font-weight:400}
input,select,textarea{font:inherit;padding:.55rem .65rem;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text);width:100%}
input[type=checkbox],input[type=radio]{width:auto}
input:focus,select:focus{outline:2px solid var(--primary);outline-offset:1px}
fieldset{border:1px solid var(--line);border-radius:8px;display:flex;flex-direction:column;gap:.4rem}
.code-input{font-size:1.5rem;letter-spacing:.3em;text-align:center}
.btn{display:inline-block;border:1px solid var(--line);background:var(--card);color:var(--text);padding:.5rem .9rem;border-radius:8px;cursor:pointer;font:inherit;font-weight:600;text-decoration:none}
.btn:hover{text-decoration:none;border-color:var(--primary)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:var(--primary-t)}
.btn.danger{color:var(--danger);border-color:var(--danger)}
.btn.small{padding:.2rem .55rem;font-size:.85rem}
.btn[disabled]{opacity:.6;cursor:wait}
form.inline{display:inline}
.row-actions{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.8rem}.row-actions form{margin:0}
.alert{padding:.7rem .9rem;border-radius:10px;margin-bottom:1rem;border:1px solid}
.alert-success{border-color:var(--ok);color:var(--ok)}.alert-danger{border-color:var(--danger);color:var(--danger)}
.alert-info{border-color:var(--primary)}.alert-warn{border-color:var(--warn)}
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse}.table th,.table td{padding:.55rem .5rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table th{font-size:.8rem;color:var(--muted);font-weight:600}
.badge{display:inline-block;padding:.08rem .5rem;border-radius:99px;font-size:.78rem;font-weight:700;color:#fff;background:var(--gray)}
.badge.green{background:var(--ok)}.badge.red{background:var(--danger)}.badge.gray{background:var(--gray)}
.dot{display:inline-block;width:.6rem;height:.6rem;border-radius:50%;background:var(--gray)}.dot.on{background:var(--ok)}.dot.off{background:var(--danger)}
.code{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:.7rem;overflow:auto;white-space:pre-wrap;word-break:break-all;max-height:420px}
.qr{display:flex;justify-content:center;background:#fff;border-radius:8px;padding:.5rem}.qr img{max-width:100%;image-rendering:pixelated}
.plain-list{list-style:none;padding:0;margin:0}.plain-list li{padding:.25rem 0}
.plan .price{font-size:1.3rem;font-weight:700}.plan.inactive{opacity:.55}
.searchbar{display:flex;gap:.5rem;margin-bottom:1rem}
.port-result.ok{color:var(--ok)}.port-result.bad{color:var(--danger)}
.steps{display:flex;flex-wrap:wrap;gap:.4rem;list-style:none;padding:0;margin:0 0 1rem}
.steps li{padding:.25rem .7rem;border-radius:99px;border:1px solid var(--line);font-size:.85rem;color:var(--muted)}
.steps li.on{border-color:var(--primary);color:var(--primary);font-weight:700}.steps li.done{color:var(--ok)}
.checks{list-style:none;padding:0}.checks li{padding:.25rem 0}.checks .ok{color:var(--ok)}.checks .bad{color:var(--danger);font-weight:700}.checks .warn{color:var(--warn)}
details summary{cursor:pointer;color:var(--primary);margin:.3rem 0}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.badge.violet{background:#7c3aed}
.admin-dev{border:1px dashed var(--line);border-radius:10px;padding:.8rem;margin:1rem 0}
.admin-dev.on{border:2px solid #7c3aed;background:color-mix(in srgb,#7c3aed 7%,var(--card))}
.admin-dev h3{margin:0 0 .4rem;font-size:1rem}
.net-block{margin-bottom:1rem}
.net-block .head{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;justify-content:space-between}
/* ---------- charts (usage + uptime). Palette validated for both themes (CVD + contrast). ---------- */
:root{--s1:#2a78d6;--s2:#eb6834;--grid:#eceef2;--axisc:#c3c2b7;--tick:#7a8597;--up-good:#0ca30c;--up-warn:#fab219;--up-bad:#d03b3b;--up-none:#e6e8ec}
html[data-theme=dark]{--s1:#3987e5;--s2:#d95926;--grid:#252d3a;--axisc:#3a4454;--tick:#94a0b2;--up-none:#2a3443}
@media (prefers-color-scheme:dark){html[data-theme=auto]{--s1:#3987e5;--s2:#d95926;--grid:#252d3a;--axisc:#3a4454;--tick:#94a0b2;--up-none:#2a3443}}
.chart-wrap{position:relative;width:100%;margin:.4rem 0}
.chart{display:block;width:100%;height:auto}
.chart .s1{fill:var(--s1)}.chart .s2{fill:var(--s2)}
.chart .grid{stroke:var(--grid);stroke-width:1}.chart .axis{stroke:var(--axisc);stroke-width:1}
.chart .tick{fill:var(--tick);font-size:11px;font-family:inherit}
.chart .hit{fill:transparent;cursor:pointer;outline:none}
.chart .hit:hover,.chart .hit:focus{fill:color-mix(in srgb,var(--text) 6%,transparent)}
.chart.strip rect{cursor:pointer;outline:none}
.chart.strip rect:hover,.chart.strip rect:focus{opacity:.75}
.up-good{fill:var(--up-good);background:var(--up-good)}.up-warn{fill:var(--up-warn);background:var(--up-warn)}
.up-bad{fill:var(--up-bad);background:var(--up-bad)}.up-none{fill:var(--up-none);background:var(--up-none)}
.legend{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem;align-items:center;font-size:.9rem;color:var(--muted)}
.legend b{color:var(--text)}
.key{display:inline-block;width:12px;height:12px;border-radius:3px;vertical-align:-1px}
.key.s1{background:var(--s1)}.key.s2{background:var(--s2)}
.usage-head{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;justify-content:space-between;margin:.6rem 0 .3rem}
.usage-head h3{margin:0;font-size:1rem}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:99px;padding:2px}
.seg a{padding:.2rem .75rem;border-radius:99px;color:var(--text);font-size:.85rem}
.seg a.on{background:var(--primary);color:var(--primary-t)}
.strip-axis{display:flex;justify-content:space-between}
.chart-tip{position:fixed;z-index:50;pointer-events:none;background:var(--card);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:.45rem .6rem;font-size:.82rem;box-shadow:0 6px 18px rgba(0,0,0,.15);white-space:pre-line;max-width:240px}
.chart-tip b{display:block;font-size:.9rem}