/* =====================================================================
   Eng. Omar Tareeq — design tokens
   Palette: #FFFFFF base, #F5F5F7 surface, #1D1D1F ink, #0071E3 accent (math/trust blue),
            #34C759 success, #FF3B30 danger, #F2A33C warm accent (limited use)
   Type: IBM Plex Sans Arabic (UI), Newsreader (display numerals/quotes)
   ===================================================================== */

:root{
  --ink:#1d1d1f;
  --ink-soft:#6e6e73;
  --surface:#ffffff;
  --surface-2:#f5f5f7;
  --surface-3:#ececef;
  --line:#e4e4e7;
  --accent:#0071e3;
  --accent-ink:#ffffff;
  --success:#1ea672;
  --danger:#e0393e;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:22px;
  --shadow-1:0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.05);
  --ease:cubic-bezier(.22,1,.36,1);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'IBM Plex Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:var(--surface);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
button, input, select{ font-family:inherit; }
a{ color:var(--accent); text-decoration:none; }
.hidden{ display:none !important; }

/* ---------- loader ---------- */
.app-loader{
  position:fixed; inset:0; background:#fff; z-index:999;
  display:flex; align-items:center; justify-content:center;
  animation: fadeOutLoader .5s var(--ease) 1.1s forwards;
}
.loader-mark{ animation: pulseMark 1.1s var(--ease) infinite; }
@keyframes pulseMark{ 0%,100%{opacity:.35; transform:scale(.94)} 50%{opacity:1; transform:scale(1)} }
@keyframes fadeOutLoader{ to{ opacity:0; visibility:hidden; pointer-events:none; } }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:40;
  height:52px; padding:0 18px;
  display:flex; align-items:center; gap:10px;
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header-spacer{ flex:1; }
.brand-mark{ display:flex; align-items:center; justify-content:center; }
.icon-btn{
  border:none; background:transparent; color:var(--ink); cursor:pointer;
  width:34px; height:34px; display:flex; align-items:center; justify-content:center;
  border-radius:8px;
}
.icon-btn:hover{ background:var(--surface-2); }
.only-app{ display:none; }

/* ---------- auth ---------- */
.auth-view{
  min-height:calc(100vh - 52px - 46px);
  display:flex; align-items:center; justify-content:center;
  padding:32px 18px 56px;
}
.auth-card{
  width:100%; max-width:400px;
  animation: cardIn .5s var(--ease);
}
@keyframes cardIn{ from{ opacity:0; transform:translateY(10px);} to{ opacity:1; transform:translateY(0);} }
.auth-title{
  font-size:28px; font-weight:700; margin:0 0 4px; letter-spacing:-.01em;
}
.auth-sub{ color:var(--ink-soft); margin:0 0 24px; font-size:14.5px; }

.segmented{
  display:flex; background:var(--surface-2); border-radius:12px; padding:3px; margin-bottom:18px;
}
.seg-btn{
  flex:1; border:none; background:transparent; padding:8px 6px; font-size:12.5px;
  border-radius:9px; cursor:pointer; color:var(--ink-soft); transition:all .25s var(--ease);
}
.seg-btn.active{ background:#fff; color:var(--ink); box-shadow:var(--shadow-1); font-weight:600; }

.auth-form{ display:flex; flex-direction:column; gap:14px; }
.field{ display:flex; flex-direction:column; gap:6px; font-size:13px; color:var(--ink-soft); }
.field input, .field select{
  border:1px solid var(--line); border-radius:var(--radius-s);
  padding:12px 14px; font-size:15px; color:var(--ink); background:var(--surface-2);
  transition:border-color .2s, background .2s;
}
.field input:focus, .field select:focus{
  outline:none; border-color:var(--accent); background:#fff;
}
.username-row{ display:flex; align-items:center; gap:8px; }
.username-row input{ flex:1; }
.username-status{ font-size:12px; min-width:60px; text-align:center; }
.username-status.ok{ color:var(--success); }
.username-status.taken{ color:var(--danger); }

.primary-btn{
  border:none; background:var(--ink); color:#fff; font-size:15.5px; font-weight:600;
  padding:13px; border-radius:var(--radius-s); cursor:pointer; margin-top:4px;
  transition:transform .15s var(--ease), background .2s;
}
.primary-btn:hover{ background:#000; }
.primary-btn:active{ transform:scale(.98); }
.primary-btn:disabled{ opacity:.55; cursor:default; transform:none; }

.link-btn{
  border:none; background:none; color:var(--accent); font-size:13.5px; cursor:pointer;
  padding:2px 0; text-align:start; align-self:flex-start;
}
.link-btn.strong{ font-weight:600; }

.or-divider{ display:flex; align-items:center; gap:10px; margin:20px 0; color:var(--ink-soft); font-size:12.5px; }
.or-divider::before, .or-divider::after{ content:''; flex:1; height:1px; background:var(--line); }

.google-btn{
  width:100%; display:flex; align-items:center; justify-content:center; gap:10px;
  border:1px solid var(--line); background:#fff; padding:11px; border-radius:var(--radius-s);
  font-size:14.5px; font-weight:500; cursor:pointer; transition:background .2s;
}
.google-btn:hover{ background:var(--surface-2); }

.auth-switch{ text-align:center; font-size:13.5px; color:var(--ink-soft); margin-top:22px; }

.auth-msg{
  position:fixed; bottom:20px; left:50%; transform:translateX(-50%) translateY(10px);
  background:var(--ink); color:#fff; padding:11px 20px; border-radius:999px;
  font-size:13.5px; opacity:0; pointer-events:none; transition:all .3s var(--ease); z-index:80;
  max-width:90vw; text-align:center;
}
.auth-msg.show{ opacity:1; transform:translateX(-50%) translateY(0); }
.auth-msg.error{ background:var(--danger); }
.auth-msg.success{ background:var(--success); }

/* ---------- app shell ---------- */
.app-shell{ display:flex; min-height:calc(100vh - 52px - 46px); }
.sidebar{
  width:230px; flex-shrink:0; border-inline-start:1px solid var(--line);
  padding:18px 12px; display:flex; flex-direction:column; justify-content:space-between;
}
.side-nav{ display:flex; flex-direction:column; gap:2px; }
.side-link{
  display:flex; align-items:center; gap:11px; padding:10px 12px; border-radius:10px;
  border:none; background:none; cursor:pointer; font-size:14.5px; color:var(--ink-soft);
  transition:background .18s, color .18s; text-align:start; width:100%;
}
.side-link:hover{ background:var(--surface-2); color:var(--ink); }
.side-link.active{ background:var(--ink); color:#fff; font-weight:600; }
.sidebar-scrim{ display:none; }

.content-area{ flex:1; padding:28px 30px 60px; min-width:0; }

.view-header{ margin-bottom:22px; }
.view-title{ font-size:26px; font-weight:700; margin:0 0 4px; letter-spacing:-.01em; }
.view-sub{ color:var(--ink-soft); margin:0; font-size:14px; }

.card-grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(230px,1fr)); gap:16px; }
.tile{
  border:1px solid var(--line); border-radius:var(--radius-m); overflow:hidden; background:#fff;
  cursor:pointer; transition:box-shadow .2s var(--ease), transform .2s var(--ease);
}
.tile:hover{ box-shadow:var(--shadow-1); transform:translateY(-2px); }
.tile-media{
  height:120px; background:linear-gradient(135deg,#eef3fb,#e4ecf9);
  display:flex; align-items:center; justify-content:center; color:var(--accent);
}
.tile-body{ padding:14px 16px; }
.tile-title{ font-weight:600; font-size:15px; margin:0 0 4px; }
.tile-meta{ font-size:12.5px; color:var(--ink-soft); margin:0; }

.empty-state{
  border:1px dashed var(--line); border-radius:var(--radius-m); padding:44px 20px;
  text-align:center; color:var(--ink-soft); font-size:14px;
}

.panel{ border:1px solid var(--line); border-radius:var(--radius-m); padding:20px; background:#fff; }
.panel + .panel{ margin-top:14px; }

.wallet-balance{ font-size:38px; font-weight:700; letter-spacing:-.02em; }
.transfer-box{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  background:var(--surface-2); border-radius:var(--radius-s); padding:14px 16px; margin:14px 0;
}
.transfer-num{ font-size:18px; font-weight:600; direction:ltr; text-align:end; }
.copy-btn{
  border:1px solid var(--line); background:#fff; border-radius:8px; padding:7px 12px;
  font-size:12.5px; cursor:pointer;
}
.upload-box{
  border:1.5px dashed var(--line); border-radius:var(--radius-s); padding:20px;
  text-align:center; cursor:pointer; font-size:13.5px; color:var(--ink-soft);
  transition:border-color .2s;
}
.upload-box:hover{ border-color:var(--accent); }

/* ---------- footer ---------- */
.site-footer{
  height:46px; display:flex; align-items:center; justify-content:center; gap:10px;
  border-top:1px solid var(--line); font-size:12.5px; color:var(--ink-soft);
}
.site-footer .dot{ opacity:.5; }

/* ---------- responsive ---------- */
@media (max-width: 860px){
  .only-app{ display:flex; }
  .app-shell.hidden ~ .site-header .only-app, #site-header .only-app{ }
  .sidebar{
    position:fixed; inset-inline-start:0; top:52px; bottom:0; z-index:60;
    background:#fff; transform:translateX(105%); transition:transform .3s var(--ease);
    width:250px; box-shadow:0 0 0 rgba(0,0,0,0);
  }
  html[dir="rtl"] .sidebar{ transform:translateX(-105%); }
  .sidebar.open{ transform:translateX(0); box-shadow:12px 0 30px rgba(0,0,0,.12); }
  .sidebar-scrim.show{
    display:block; position:fixed; inset:52px 0 0 0; background:rgba(0,0,0,.25); z-index:50;
  }
  .content-area{ padding:20px 16px 50px; }
  .auth-title{ font-size:24px; }
}
@media (min-width:861px){
  #sidebarToggle{ display:none; }
}