/* ── Reset & Base ────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:       #0a0e17;
  --bg2:      #111827;
  --bg3:      #1a2236;
  --border:   #1e293b;
  --text:     #e2e8f0;
  --text2:    #94a3b8;
  --green:    #22c55e;
  --red:      #ef4444;
  --blue:     #3b82f6;
  --yellow:   #eab308;
  --accent:   #6366f1;
  --font:     'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --radius:   6px;
}
html,body{height:100%;font-family:var(--font);font-size:14px;color:var(--text);background:var(--bg);overflow:hidden}
a{color:var(--blue);text-decoration:none}
input,select,button,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none;background:none}

/* Scrollbars */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}

/* ── Layout ─────────────────────────────────────────────── */
#app{display:flex;flex-direction:column;height:100vh}

/* Top bar */
.topbar{
  display:flex;align-items:center;gap:12px;
  padding:8px 16px;background:var(--bg2);border-bottom:1px solid var(--border);
  flex-shrink:0;height:44px;
}
.topbar .logo{font-weight:700;font-size:16px;color:var(--accent);letter-spacing:1px}
.topbar .session-info{margin-left:auto;display:flex;align-items:center;gap:10px}
.topbar .dot{width:9px;height:9px;border-radius:50%;display:inline-block}
.topbar .dot.on{background:var(--green)}
.topbar .dot.off{background:var(--red)}
.topbar .greeting{color:var(--text2);font-size:13px}

/* Main grid */
.main{display:grid;grid-template-columns:300px 1fr 320px;grid-template-rows:1fr 260px;flex:1;overflow:hidden;gap:0}

/* Panels */
.panel{background:var(--bg2);border:1px solid var(--border);overflow:hidden;display:flex;flex-direction:column}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 12px;background:var(--bg3);border-bottom:1px solid var(--border);
  font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--text2);
  flex-shrink:0;
}
.panel-body{flex:1;overflow-y:auto;padding:6px}

/* ── Watchlist (left col) ───────────────────────────────── */
.watchlist{grid-row:1/3;grid-column:1}
.wl-search-wrap{position:relative}
.wl-add{display:flex;gap:4px;padding:6px 8px;border-bottom:1px solid var(--border)}
.wl-add input{flex:1;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:8px 10px;font-size:13px}
.wl-add input:focus{border-color:var(--accent)}

/* Search results dropdown */
.search-results{
  display:none;position:absolute;top:100%;left:0;right:0;z-index:50;
  max-height:400px;overflow-y:auto;
  background:var(--bg2);border:1px solid var(--accent);border-top:none;
  box-shadow:0 8px 24px rgba(0,0,0,.5);
}
.search-results.visible{display:block}
.sr-row{
  padding:8px 12px;cursor:pointer;border-bottom:1px solid var(--border);
  display:flex;justify-content:space-between;align-items:center;gap:8px;
  transition:background .1s;
}
.sr-row:hover{background:var(--bg3)}
.sr-sym{font-weight:600;font-size:13px;white-space:nowrap;display:flex;align-items:center;gap:6px}
.sr-meta{font-size:11px;color:var(--text2);text-align:right;white-space:nowrap}
.sr-empty{padding:12px;text-align:center;color:var(--text2);font-size:13px}

/* Option type pills */
.pill{display:inline-block;padding:2px 8px;border-radius:4px;font-size:10px;font-weight:700;letter-spacing:.5px;line-height:16px;vertical-align:middle}
.pill-call{background:rgba(34,197,94,.2);color:var(--green);border:1px solid rgba(34,197,94,.3)}
.pill-put{background:rgba(239,68,68,.2);color:var(--red);border:1px solid rgba(239,68,68,.3)}
.pill-fut{background:rgba(59,130,246,.2);color:var(--blue);border:1px solid rgba(59,130,246,.3)}

/* Expiry filter bar */
.expiry-filter{
  display:flex;align-items:center;gap:8px;padding:6px 8px;border-bottom:1px solid var(--border);font-size:12px;
}
.expiry-filter label{color:var(--text2);cursor:pointer;display:flex;align-items:center;gap:5px;white-space:nowrap}
.expiry-filter select{
  flex:1;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:4px 8px;font-size:12px;
}

/* Watchlist rows */
.wl-row{
  display:grid;grid-template-columns:1fr auto auto;gap:8px;
  padding:7px 10px;border-bottom:1px solid var(--border);align-items:center;cursor:pointer;
  transition:background .15s;
}
.wl-row:hover{background:var(--bg3)}
.wl-sym{font-weight:600;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:5px;font-size:13px}
.wl-sym .wl-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.wl-ltp{text-align:right;font-weight:600;font-size:13px}
.wl-chg{text-align:right;font-size:12px}
.wl-del{opacity:0;color:var(--red);cursor:pointer;font-size:16px;transition:opacity .15s}
.wl-row:hover .wl-del{opacity:1}

.positive{color:var(--green)}
.negative{color:var(--red)}
.neutral{color:var(--text2)}

/* ── Market Depth / Quote Detail (centre top) ──────────── */
.quote-panel{grid-column:2;grid-row:1;overflow:hidden}
.quote-header{
  display:flex;gap:16px;padding:10px 14px;flex-wrap:wrap;align-items:baseline;
  border-bottom:1px solid var(--border);
}
.quote-header .sym{font-size:18px;font-weight:700;display:flex;align-items:center;gap:8px}
.quote-header .ltp{font-size:24px;font-weight:700}
.quote-header .meta{font-size:13px;color:var(--text2)}

.depth-grid{display:grid;grid-template-columns:1fr 1fr;gap:0}
.depth-side{padding:8px}
.depth-side h4{font-size:12px;text-transform:uppercase;color:var(--text2);margin-bottom:6px;letter-spacing:.5px}
.depth-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;padding:3px 0;font-size:13px}
.depth-row.header{color:var(--text2);font-weight:600;font-size:12px}
.ohlc-bar{display:flex;gap:18px;padding:8px 14px;border-top:1px solid var(--border);font-size:13px;color:var(--text2);flex-wrap:wrap}
.ohlc-bar span b{color:var(--text)}

/* ── Order Entry (right col) ────────────────────────────── */
.order-panel{grid-row:1/3;grid-column:3}
.order-instrument{
  padding:10px 12px;border-bottom:1px solid var(--border);
  font-size:14px;font-weight:600;display:flex;align-items:center;gap:8px;
  color:var(--text);min-height:38px;
}
.order-instrument .oi-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.order-instrument .oi-placeholder{color:var(--text2);font-weight:400;font-size:12px}
.order-form{padding:10px;display:flex;flex-direction:column;gap:10px}
.order-form .row{display:flex;gap:8px;align-items:center}
.order-form label{width:60px;font-size:11px;text-transform:uppercase;color:var(--text2);flex-shrink:0}
.order-form input,.order-form select{
  flex:1;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:7px 10px;font-size:13px;
}
.order-form input:focus,.order-form select:focus{border-color:var(--accent)}
.btn-row{display:flex;gap:8px;margin-top:6px}
.btn{padding:9px 0;border-radius:var(--radius);font-weight:700;cursor:pointer;text-align:center;flex:1;font-size:14px;transition:opacity .15s}
.btn:hover{opacity:.85}
.btn-buy{background:var(--green);color:#000}
.btn-sell{background:var(--red);color:#fff}
.btn-sm{padding:5px 12px;font-size:12px;border-radius:var(--radius);cursor:pointer;font-weight:600}
.btn-cancel{background:var(--red);color:#fff}
.btn-modify{background:var(--yellow);color:#000}

/* ── Bottom panels ──────────────────────────────────────── */
.bottom{grid-column:2;grid-row:2;display:flex;border-top:1px solid var(--border)}

/* Tab bar */
.tab-bar{display:flex;gap:0;border-bottom:1px solid var(--border);flex-shrink:0}
.tab-btn{
  padding:8px 16px;cursor:pointer;font-size:12px;font-weight:600;text-transform:uppercase;
  color:var(--text2);border-bottom:2px solid transparent;transition:all .15s;
}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}

.tab-content{display:none;flex:1;overflow:auto}
.tab-content.active{display:block}

/* Tables */
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th{text-align:left;padding:6px 10px;color:var(--text2);font-weight:600;text-transform:uppercase;font-size:11px;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--bg2)}
.tbl td{padding:6px 10px;border-bottom:1px solid var(--border);white-space:nowrap}
.tbl tr:hover td{background:var(--bg3)}

/* ── Login overlay ──────────────────────────────────────── */
.login-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.85);display:flex;align-items:center;justify-content:center;z-index:100;
}
.login-overlay.hidden{display:none}
.login-box{
  background:var(--bg2);border:1px solid var(--border);border-radius:12px;
  padding:32px 36px;width:420px;max-width:95vw;
}
.login-box h2{margin-bottom:18px;font-size:20px;color:var(--accent)}
.login-box .field{margin-bottom:14px}
.login-box .field label{display:block;margin-bottom:5px;font-size:12px;text-transform:uppercase;color:var(--text2)}
.login-box .field input{
  width:100%;padding:10px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);font-size:14px;
}
.login-box .field input:focus{border-color:var(--accent)}
.login-btn{
  width:100%;padding:12px;background:var(--accent);color:#fff;border-radius:var(--radius);
  font-weight:700;font-size:15px;cursor:pointer;margin-top:10px;
}
.login-btn:disabled{opacity:.5;cursor:not-allowed}
.login-help{color:var(--text2);font-size:12px;line-height:1.5;margin-top:10px}
.login-error{color:var(--red);font-size:13px;margin-top:10px}

/* ── Status bar ─────────────────────────────────────────── */
.statusbar{
  display:flex;align-items:center;gap:14px;padding:4px 16px;
  background:var(--bg3);border-top:1px solid var(--border);font-size:11px;color:var(--text2);
  flex-shrink:0;
}
.statusbar .clock{margin-left:auto}

/* ── Notifications ──────────────────────────────────────── */
.toast-container{position:fixed;top:52px;right:16px;z-index:200;display:flex;flex-direction:column;gap:8px}
.toast{
  padding:10px 16px;border-radius:var(--radius);font-size:13px;font-weight:600;
  animation:slideIn .25s ease;max-width:360px;
}
.toast.success{background:var(--green);color:#000}
.toast.error{background:var(--red);color:#fff}
.toast.info{background:var(--blue);color:#fff}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* ── Responsive ─────────────────────────────────────────── */
@media(max-width:1024px){
  .main{grid-template-columns:260px 1fr 300px}
}
@media(max-width:768px){
  .main{grid-template-columns:1fr;grid-template-rows:auto}
  .watchlist,.order-panel{grid-row:auto}
  .bottom{grid-column:auto}
}