/* ============================================================================
   Data Receiver — styling.
   The base model's language (soft cards, hairline borders, one accent, RTL,
   Vazirmatn) taken somewhere richer: a dark, deep surface with a living aurora
   behind it, because this page has to make a business owner feel that
   something is genuinely being made for them.
   ========================================================================== */
@font-face{font-family:Vazirmatn;src:url("../fonts/Vazirmatn-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Vazirmatn;src:url("../fonts/Vazirmatn-Medium.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:Vazirmatn;src:url("../fonts/Vazirmatn-Bold.woff2") format("woff2");font-weight:700;font-display:swap}

:root{
  --bg:#0b0d11; --bg2:#12151b;
  --card:rgba(255,255,255,.045);
  --card2:rgba(255,255,255,.028);
  --line:rgba(255,255,255,.10);
  --line2:rgba(255,255,255,.06);
  --fg:#f2f4f7; --dim:#98a0ad; --dim2:#6d7583;
  --accent:#e8ecf3; --accentInk:#0b0d11;
  --ok:#7ee0a8; --warn:#f2c261; --bad:#f08a8a;
  --r:16px; --rs:11px;
  --maxw:820px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{
  background:var(--bg); color:var(--fg);
  font-family:Vazirmatn,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px; line-height:1.85; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
#drbg{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none}
.app{position:relative;z-index:1;min-height:100%;padding:0 16px 72px;max-width:var(--maxw);margin:0 auto}
.boot{padding:120px 0;text-align:center;color:var(--dim)}

/* --------------------------------- atoms ---------------------------------- */
h1,h2,h3{margin:0;font-weight:700;line-height:1.5}
p{margin:0}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font:inherit;color:inherit;width:100%;background:rgba(255,255,255,.05);
  border:1px solid var(--line);border-radius:var(--rs);padding:10px 12px;outline:none;
  transition:border-color .15s,background .15s}
input:focus,textarea:focus,select:focus{border-color:rgba(255,255,255,.34);background:rgba(255,255,255,.075)}
input::placeholder,textarea::placeholder{color:var(--dim2)}
textarea{resize:vertical;min-height:88px;line-height:1.9}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--dim) 50%),linear-gradient(135deg,var(--dim) 50%,transparent 50%);
  background-position:left 14px top 19px,left 9px top 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-left:32px}
option{background:#12151b;color:#f2f4f7}
a{color:inherit}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.06em}
.ltr{direction:ltr;text-align:left}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:18px;backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3);
  box-shadow:0 18px 50px rgba(0,0,0,.36)}
.card.flat{background:var(--card2);box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none}
.stack{display:flex;flex-direction:column;gap:14px}
.stack.s{gap:9px}
.stack.l{gap:22px}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.row.nowrap{flex-wrap:nowrap}
.spacer{flex:1}
.dim{color:var(--dim)}
.dim2{color:var(--dim2)}
.sm{font-size:13px;line-height:1.8}
.xs{font-size:12px;line-height:1.75}
.center{text-align:center}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:11px 18px;border-radius:12px;background:var(--accent);color:var(--accentInk);
  font-weight:700;font-size:14px;transition:transform .12s,opacity .15s}
.btn:hover{opacity:.9}
.btn:active{transform:scale(.985)}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.btn.ghost{background:rgba(255,255,255,.06);color:var(--fg);border:1px solid var(--line);font-weight:500}
.btn.ghost:hover{background:rgba(255,255,255,.11)}
.btn.sm{padding:7px 13px;font-size:13px;border-radius:10px}
.btn.danger{background:rgba(240,138,138,.14);color:#ffb4b4;border:1px solid rgba(240,138,138,.28);font-weight:500}
.btn.wide{width:100%}

.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);font-size:13px;
  transition:background .15s,border-color .15s;user-select:none}
.chip:hover{background:rgba(255,255,255,.09)}
.chip.on{background:var(--accent);color:var(--accentInk);border-color:transparent;font-weight:700}
.tag{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:7px;
  background:rgba(255,255,255,.07);font-size:11.5px;color:var(--dim)}
.tag.ok{background:rgba(126,224,168,.14);color:var(--ok)}
.tag.warn{background:rgba(242,194,97,.14);color:var(--warn)}
.tag.bad{background:rgba(240,138,138,.14);color:var(--bad)}

.label{font-size:13px;font-weight:500}
.hint{font-size:12px;color:var(--dim2);line-height:1.8}
.err{color:#ffb4b4;font-size:13px}
.hr{height:1px;background:var(--line2);margin:4px 0}

/* --------------------------------- header --------------------------------- */
.top{position:sticky;top:0;z-index:20;margin:0 -16px 14px;padding:14px 16px 12px;
  background:linear-gradient(180deg,rgba(11,13,17,.94),rgba(11,13,17,.72) 70%,transparent);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.brandline{display:flex;align-items:center;gap:9px;font-weight:700;font-size:14px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--fg);box-shadow:0 0 0 4px rgba(255,255,255,.08)}

/* --------------------------------- tabs ----------------------------------- */
.tabs{display:flex;gap:7px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px;margin:0 -16px;padding-inline:16px}
.tabs::-webkit-scrollbar{display:none}
.tab{flex-shrink:0;white-space:nowrap;padding:8px 14px;border-radius:999px;font-size:13px;
  border:1px solid var(--line2);background:rgba(255,255,255,.035);color:var(--dim);transition:all .15s}
.tab:hover{color:var(--fg);background:rgba(255,255,255,.08)}
.tab.on{background:var(--accent);color:var(--accentInk);font-weight:700;border-color:transparent}
.tab .tick{font-size:11px;opacity:.9}

/* ------------------------------- progress --------------------------------- */
.bar{height:5px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden}
.bar > i{display:block;height:100%;background:var(--fg);border-radius:99px;transition:width .5s cubic-bezier(.2,.7,.3,1)}

/* ------------------------------- login page ------------------------------- */
.hero{padding:min(14vh,90px) 0 26px;text-align:center}
.hero h1{font-size:clamp(24px,6vw,34px);letter-spacing:-.01em}
.hero p{color:var(--dim);margin-top:10px;font-size:14.5px}
.mark{width:56px;height:56px;margin:0 auto 22px;border-radius:18px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);display:flex;align-items:center;justify-content:center}
.mark svg{width:26px;height:26px}
.codebox{letter-spacing:.55em;text-align:center;font-size:22px;font-weight:700;padding:14px 12px;direction:ltr}
.footlink{margin-top:34px;text-align:center}
.footlink button{font-size:12px;color:var(--dim2);text-decoration:underline;text-underline-offset:4px}
.footlink button:hover{color:var(--dim)}

/* --------------------------------- items ---------------------------------- */
.item{border:1px solid var(--line);border-radius:var(--rs);background:rgba(255,255,255,.028)}
.item > .head{display:flex;align-items:center;gap:9px;padding:10px 12px;cursor:pointer}
.item > .body{padding:0 12px 12px;display:flex;flex-direction:column;gap:10px}
.item .grip{color:var(--dim2);font-size:12px}
.caret{transition:transform .18s;color:var(--dim);flex-shrink:0}
.caret.open{transform:rotate(180deg)}

/* --------------------------------- files ---------------------------------- */
.drop{border:1.5px dashed var(--line);border-radius:var(--rs);padding:20px 14px;text-align:center;
  background:rgba(255,255,255,.02);transition:border-color .15s,background .15s}
.drop.hot{border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.07)}
.tree{font-size:12.5px;line-height:2}
.tree .n{display:flex;align-items:center;gap:7px;padding:2px 0}
.tree .kids{padding-inline-start:16px;border-inline-start:1px solid var(--line2);margin-inline-start:6px}
/* File and folder names decide their own direction: a Persian folder name reads
   RTL, while "1.png" must not come out as "png.1" inside an RTL paragraph. */
.tree .fold,.tree .file{unicode-bidi:plaintext;text-align:start}
.tree .fold{color:var(--fg)}
.tree .file{color:var(--dim)}
.tree .size{color:var(--dim2);font-size:11px}

/* -------------------------------- admin ----------------------------------- */
table.t{width:100%;border-collapse:collapse;font-size:13px}
table.t th{text-align:start;font-weight:500;color:var(--dim2);font-size:11.5px;padding:0 8px 8px}
table.t td{padding:11px 8px;border-top:1px solid var(--line2);vertical-align:middle}
table.t tr:hover td{background:rgba(255,255,255,.022)}
.codepill{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;letter-spacing:.13em;
  background:rgba(255,255,255,.08);padding:4px 10px;border-radius:8px;direction:ltr;display:inline-block}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:560px){.grid2{grid-template-columns:1fr}}

/* -------------------------------- toast ----------------------------------- */
.toast{position:fixed;inset-inline:0;bottom:22px;z-index:80;display:flex;justify-content:center;
  pointer-events:none;opacity:0;transform:translateY(10px);transition:opacity .22s,transform .22s}
.toast.on{opacity:1;transform:none}
.toast > span{background:#eef1f6;color:#0b0d11;font-weight:700;font-size:13.5px;
  padding:10px 20px;border-radius:999px;box-shadow:0 14px 40px rgba(0,0,0,.5)}
.toast.bad > span{background:#f0a0a0}

/* saving indicator */
.saving{font-size:11.5px;color:var(--dim2)}
.saving.ok{color:var(--ok)}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}