:root{
  --bg:#0b0e17;--bg2:#121624;--bg3:#1a1f33;--bg4:#222840;
  --accent:#f0b90b;--accent2:#1e88e5;--green:#00c853;--red:#f6465d;
  --text:#e2e8f0;--muted:#8892a4;--border:#2a3250;
  --radius:8px;--font:'Segoe UI',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{overflow-x:hidden;}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden;}

/* ── LOGIN ── */
#loginScreen{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg);padding:16px;}
.login-card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:48px 40px;width:100%;max-width:360px;text-align:center;}
.login-card .logo{font-size:1.8rem;font-weight:700;color:var(--accent);margin-bottom:8px;letter-spacing:1px;}
.login-card p{color:var(--muted);font-size:.85rem;margin-bottom:32px;}
.login-card label{display:block;text-align:left;font-size:.78rem;color:var(--muted);margin-bottom:4px;margin-top:16px;}
.login-card input{width:100%;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;color:var(--text);font-size:.9rem;outline:none;transition:border .2s;}
.login-card input:focus{border-color:var(--accent);}
.btn-login{width:100%;margin-top:24px;padding:12px;background:var(--accent);color:#000;font-weight:700;font-size:.95rem;border:none;border-radius:var(--radius);cursor:pointer;transition:opacity .2s;}
.btn-login:hover{opacity:.85;}
.login-error{color:var(--red);font-size:.8rem;margin-top:10px;display:none;}
.login-success{color:var(--green);font-size:.8rem;margin-top:10px;}
.login-alt{margin-top:18px;font-size:.8rem;color:var(--muted);}
.login-alt a{color:var(--accent);text-decoration:none;}
.login-alt a:hover{text-decoration:underline;}
#registerScreen{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg);padding:16px;}

/* ── DASHBOARD ── */
#dashboard{display:none;flex-direction:column;min-height:100vh;}

/* ── HEADER ── */
header{
  background:var(--bg2);
  border-bottom:1px solid var(--border);
  padding:0 16px;
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  position:sticky;
  top:0;
  z-index:100;
  gap:12px;
}
.logo{font-size:1.2rem;font-weight:700;color:var(--accent);letter-spacing:1px;white-space:nowrap;flex-shrink:0;display:flex;align-items:center;gap:6px;}
.logo-img{height:36px;width:auto;flex-shrink:0;}
.logo-icon{height:1.4em;width:auto;vertical-align:middle;flex-shrink:0;}
.login-card .logo{display:flex;align-items:center;justify-content:center;gap:8px;}
.login-card .logo .logo-icon{height:2em;}
.pair-tabs{display:flex;gap:6px;flex-shrink:0;}
.pair-tab{padding:6px 14px;border-radius:20px;border:1px solid var(--border);background:transparent;color:var(--muted);font-size:.85rem;cursor:pointer;transition:all .2s;white-space:nowrap;}
.pair-tab.active{background:var(--accent);color:#000;border-color:var(--accent);font-weight:700;}
.header-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.user-badge{background:var(--bg3);border:1px solid var(--border);border-radius:20px;padding:5px 14px;font-size:.82rem;color:var(--text);white-space:nowrap;}
.btn-logout{background:transparent;border:1px solid var(--red);color:var(--red);padding:5px 14px;border-radius:20px;font-size:.82rem;cursor:pointer;transition:all .2s;white-space:nowrap;}
.btn-logout:hover{background:var(--red);color:#fff;}
.conn-status{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--muted);white-space:nowrap;}
.conn-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;background:var(--muted);}
.conn-dot.connected{background:var(--green);}
.conn-dot.reconnecting{background:var(--accent);}
.conn-dot.disconnected{background:var(--red);}
.conn-dot.running{background:var(--green);}
.conn-dot.stopped{background:var(--muted);}

/* ── TICKER STRIP ── */
.ticker{
  background:var(--bg3);
  border-bottom:1px solid var(--border);
  padding:10px 16px;
  display:flex;
  gap:24px;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.ticker::-webkit-scrollbar{display:none;}
.tick-item{display:flex;flex-direction:column;gap:2px;min-width:80px;flex-shrink:0;}
.tick-label{color:var(--muted);font-size:.72rem;}
.tick-val{font-weight:600;font-size:.85rem;}
.up{color:var(--green);}
.dn{color:var(--red);}

/* ── MAIN LAYOUT (desktop default) ── */
.main{
  display:grid;
  grid-template-columns:320px 1fr;
  flex:1;
}

/* ── LEFT PANEL ── */
.left-panel{
  background:var(--bg2);
  border-right:1px solid var(--border);
  padding:16px;
  display:flex;
  flex-direction:column;
  gap:16px;
  overflow-y:auto;
}

/* ── CARDS ── */
.card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:16px;}
.card-title{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.8px;margin-bottom:14px;font-weight:600;}
.ls-toggle{display:grid;grid-template-columns:1fr 1fr;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);margin-bottom:14px;}
.ls-btn{padding:9px;text-align:center;font-size:.88rem;font-weight:600;cursor:pointer;transition:all .2s;border:none;background:transparent;color:var(--muted);}
.ls-btn.long.active{background:var(--green);color:#fff;}
.ls-btn.short.active{background:var(--red);color:#fff;}
.order-type{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap;}
.ot-btn{padding:5px 12px;border-radius:20px;border:1px solid var(--border);background:transparent;color:var(--muted);font-size:.78rem;cursor:pointer;transition:all .2s;}
.ot-btn.active{border-color:var(--accent);color:var(--accent);}
.form-group{margin-bottom:12px;}
.form-group label{display:block;font-size:.75rem;color:var(--muted);margin-bottom:4px;}
.form-group input,.form-group select{width:100%;background:var(--bg4);border:1px solid var(--border);border-radius:6px;padding:9px 12px;color:var(--text);font-size:.88rem;outline:none;transition:border .2s;}
.form-group input:focus,.form-group select:focus{border-color:var(--accent);}
.leverage-row{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.leverage-row label{font-size:.75rem;color:var(--muted);white-space:nowrap;}
.leverage-row input[type=range]{flex:1;accent-color:var(--accent);}
.leverage-val{font-size:.85rem;font-weight:700;color:var(--accent);min-width:36px;text-align:right;}
.btn-trade{width:100%;padding:12px;border:none;border-radius:var(--radius);font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s;margin-top:4px;}
.btn-long{background:var(--green);color:#fff;}
.btn-short{background:var(--red);color:#fff;}
.btn-long:hover{opacity:.85;}
.btn-short:hover{opacity:.85;}
.avail-row{display:flex;justify-content:space-between;font-size:.78rem;color:var(--muted);margin-bottom:14px;}
.avail-row span:last-child{color:var(--text);}

/* ── RIGHT PANEL ── */
.right-panel{display:flex;flex-direction:column;overflow:hidden;}
.bottom-section{flex:1;display:flex;flex-direction:column;overflow:hidden;}
.section-tabs{
  display:flex;
  background:var(--bg2);
  border-bottom:1px solid var(--border);
  padding:0 16px;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
  flex-shrink:0;
}
.section-tabs::-webkit-scrollbar{display:none;}
.sec-tab{padding:14px 18px;font-size:.85rem;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;transition:all .2s;white-space:nowrap;flex-shrink:0;}
.sec-tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600;}
.tab-content{display:none;padding:16px;overflow-y:auto;flex:1;}
.tab-content.active{display:block;}

/* ── TABLES ── */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table{width:100%;border-collapse:collapse;font-size:.82rem;}
th{color:var(--muted);font-weight:600;padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;font-size:.75rem;text-transform:uppercase;letter-spacing:.5px;}
td{padding:11px 12px;border-bottom:1px solid var(--border);color:var(--text);white-space:nowrap;}
tr:last-child td{border-bottom:none;}
tr:hover td{background:rgba(255,255,255,.02);}
.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:.72rem;font-weight:600;}
.badge-long{background:rgba(0,200,83,.15);color:var(--green);}
.badge-short{background:rgba(246,70,93,.15);color:var(--red);}
.badge-open{background:rgba(240,185,11,.15);color:var(--accent);}
.badge-filled{background:rgba(0,200,83,.15);color:var(--green);}
.badge-cancelled{background:rgba(136,146,164,.15);color:var(--muted);}
.btn-sm{padding:4px 10px;font-size:.75rem;border-radius:6px;border:none;cursor:pointer;font-weight:600;transition:all .2s;}
.btn-modify{background:rgba(30,136,229,.15);color:var(--accent2);border:1px solid rgba(30,136,229,.3);}
.btn-cancel{background:rgba(246,70,93,.12);color:var(--red);border:1px solid rgba(246,70,93,.3);}
.btn-modify:hover{background:rgba(30,136,229,.3);}
.btn-cancel:hover{background:rgba(246,70,93,.25);}
.btn-reverse{background:rgba(245,158,11,.12);color:#f59e0b;border:1px solid rgba(245,158,11,.3);}
.btn-reverse:hover{background:rgba(245,158,11,.25);}
.btn-close-all{flex:1;padding:8px 0;font-size:.8rem;font-weight:700;border-radius:8px;border:1px solid rgba(246,70,93,.35);cursor:pointer;background:rgba(246,70,93,.15);color:var(--red);transition:all .2s;}
.btn-close-all:hover{background:rgba(246,70,93,.3);}
.btn-reverse-all{flex:1;padding:8px 0;font-size:.8rem;font-weight:700;border-radius:8px;border:1px solid rgba(245,158,11,.3);cursor:pointer;background:rgba(245,158,11,.12);color:#f59e0b;transition:all .2s;}
.btn-reverse-all:hover{background:rgba(245,158,11,.25);}
.pnl-pos{color:var(--green);}
.pnl-neg{color:var(--red);}
.empty-state{text-align:center;padding:48px;color:var(--muted);font-size:.88rem;}

/* ── USER MENU DROPDOWN ── */
.user-menu-wrap{position:relative;}
.user-badge{cursor:pointer;user-select:none;}
.user-badge:hover{border-color:var(--accent);color:var(--accent);}
.user-dropdown{
  display:none;
  position:absolute;
  top:calc(100% + 8px);
  right:0;
  background:var(--bg2);
  border:1px solid var(--border);
  border-radius:var(--radius);
  min-width:160px;
  z-index:200;
  box-shadow:0 8px 24px rgba(0,0,0,.45);
  overflow:hidden;
}
.user-dropdown.show{display:block;}
.user-dd-item{
  padding:11px 16px;
  font-size:.85rem;
  color:var(--text);
  cursor:pointer;
  transition:background .15s;
  white-space:nowrap;
}
.user-dd-item:hover{background:var(--bg3);}
.user-dd-divider{height:1px;background:var(--border);margin:2px 0;}
.user-dd-logout{color:var(--red);}
.user-dd-logout:hover{background:rgba(246,70,93,.1);}

/* ── MODAL ── */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:200;align-items:center;justify-content:center;}
.modal-overlay.show{display:flex;}
.modal{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:28px;width:360px;max-width:calc(100vw - 32px);}
.modal h3{font-size:1rem;margin-bottom:20px;color:var(--text);}
.modal .form-group{margin-bottom:14px;}
.modal-btns{display:flex;gap:10px;margin-top:20px;}
.btn-save{flex:1;padding:10px;background:var(--accent);color:#000;font-weight:700;border:none;border-radius:var(--radius);cursor:pointer;}
.btn-close-modal{flex:1;padding:10px;background:var(--bg4);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;}

/* ── SETTINGS MODAL ── */
.settings-modal{width:560px;max-width:calc(100vw - 32px);max-height:88vh;overflow-y:auto;}
.settings-section{
  font-size:.72rem;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.8px;
  font-weight:600;
  margin:18px 0 10px;
  padding-bottom:6px;
  border-bottom:1px solid var(--border);
}
.settings-section:first-of-type{margin-top:0;}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;}
.settings-checks{display:flex;flex-wrap:wrap;gap:12px 24px;margin-bottom:12px;}
.form-check{display:flex;align-items:center;gap:8px;font-size:.85rem;cursor:pointer;}
.form-check input[type=checkbox]{accent-color:var(--accent);width:15px;height:15px;cursor:pointer;}
.st-hint{font-size:.72rem;color:var(--muted);font-weight:400;margin-left:6px;text-transform:none;letter-spacing:0;}
.field-error{font-size:.78rem;color:var(--red);margin-top:4px;}

/* ── BOT PROCESS ROW ── */
.bot-process-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;padding:12px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);}
.bot-status-wrap{display:flex;align-items:center;gap:8px;}
.bot-status-dot{width:10px;height:10px;border-radius:50%;background:var(--muted);flex-shrink:0;transition:background .3s;}
.bot-status-dot.running{background:var(--green);box-shadow:0 0 6px rgba(0,200,83,.5);}
.bot-status-dot.stopped{background:var(--muted);}
.bot-status-text{font-size:.82rem;color:var(--muted);}
.btn-bot-toggle{padding:8px 18px;border-radius:var(--radius);border:none;font-size:.82rem;font-weight:700;cursor:pointer;transition:all .2s;white-space:nowrap;}
.btn-bot-toggle.start{background:var(--green);color:#fff;}
.btn-bot-toggle.stop{background:rgba(246,70,93,.15);color:var(--red);border:1px solid rgba(246,70,93,.35);}
.btn-bot-toggle:disabled{opacity:.5;cursor:not-allowed;}

/* ── SUBSCRIPTION BANNER ── */
.sub-banner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 10px 20px; flex-wrap: wrap;
  background: linear-gradient(90deg, rgba(240,185,11,.12), rgba(240,185,11,.06));
  border-bottom: 1px solid rgba(240,185,11,.25);
  font-size: .84rem; color: var(--text);
}
.sub-banner.past-due {
  background: linear-gradient(90deg, rgba(246,70,93,.12), rgba(246,70,93,.06));
  border-bottom-color: rgba(246,70,93,.3);
}
.sub-banner-btn {
  padding: 7px 18px; border-radius: 20px; border: none; cursor: pointer;
  background: var(--accent); color: #000; font-size: .82rem; font-weight: 700;
  white-space: nowrap; transition: opacity .2s; flex-shrink: 0;
}
.sub-banner-btn:hover { opacity: .85; }
.past-due .sub-banner-btn { background: var(--red); color: #fff; }

/* ── UPGRADE DROPDOWN ITEMS ── */
.user-dd-upgrade { color: var(--accent) !important; font-weight: 600; }
.user-dd-upgrade:hover { background: rgba(240,185,11,.08) !important; }

/* ── UPGRADE MODAL ── */
.upgrade-modal { text-align: center; max-width: 340px; }
.upgrade-icon { font-size: 2.4rem; margin-bottom: 12px; }
.upgrade-modal h3 { font-size: 1.2rem; margin-bottom: 8px; }
.upgrade-sub { font-size: .88rem; color: var(--muted); margin-bottom: 20px; line-height: 1.6; }
.upgrade-features { list-style: none; text-align: left; display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; padding: 0 8px; }
.upgrade-features li { font-size: .88rem; display: flex; gap: 8px; }
.uf-check { color: var(--green); flex-shrink: 0; }
.upgrade-price { font-size: 2rem; font-weight: 900; font-family: 'Courier New', monospace; color: var(--accent); margin-bottom: 20px; }
.upgrade-price span { font-size: .9rem; color: var(--muted); font-family: var(--font); font-weight: 400; }
.btn-upgrade-go { width: 100%; padding: 13px; background: var(--accent); color: #000; font-size: .95rem; font-weight: 700; border: none; border-radius: var(--radius); cursor: pointer; transition: opacity .2s; }
.btn-upgrade-go:hover { opacity: .85; }
.btn-upgrade-go:disabled { opacity: .5; cursor: not-allowed; }

/* ── TOAST ── */
.toast{position:fixed;bottom:24px;right:24px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:12px 20px;font-size:.85rem;color:var(--text);z-index:300;transform:translateY(80px);opacity:0;transition:all .3s;}
.toast.show{transform:translateY(0);opacity:1;}
.toast.success{border-left:3px solid var(--green);}
.toast.error{border-left:3px solid var(--red);}
.toast.info{border-left:3px solid var(--accent);}

/* ══════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════ */

/* ── TABLET  641 – 1024 px ── */
@media (max-width:1024px) {
  /* Header: allow wrapping on smaller tablets */
  header{height:auto;min-height:56px;padding:8px 16px;flex-wrap:wrap;row-gap:6px;}

  /* Stack left-panel above tables */
  .main{
    grid-template-columns:1fr;
    flex:none;
    min-width:0;
  }

  /* Pair cards side-by-side */
  .left-panel{
    flex-direction:row;
    align-items:flex-start;
    border-right:none;
    border-bottom:1px solid var(--border);
    overflow-y:visible;
    min-width:0;
  }
  .left-panel .card{flex:1;min-width:0;}

  /* Right panel: switch to block so flex:1 on .bottom-section doesn't collapse to 0 */
  /* min-width:0 prevents the wide table from expanding this grid item beyond the viewport */
  .right-panel{display:block;overflow:visible;min-width:0;width:100%;}
  .bottom-section{display:block;overflow:visible;min-width:0;}
  .tab-content{overflow-y:visible;min-width:0;}
  .tbl-wrap{max-width:100%;}
}

/* ── MOBILE  ≤ 640 px ── */
@media (max-width:640px) {
  /* Login */
  .login-card{padding:32px 20px;}

  /* ── Header: two-row layout ── */
  header{
    height:auto;
    padding:8px 12px;
    flex-wrap:wrap;
    row-gap:6px;
    align-items:center;
  }
  .logo{font-size:1rem;order:1;flex:1;}
  .header-right{order:2;gap:6px;}
  .user-badge{padding:4px 10px;font-size:.75rem;}
  #connLabel{display:none;}
  .conn-dot{width:7px;height:7px;}
  .btn-logout{padding:4px 10px;font-size:.78rem;}
  /* Pair tabs: full-width row below logo + controls */
  .pair-tabs{
    order:3;
    width:100%;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:6px;
  }
  .pair-tab{text-align:center;font-size:.82rem;padding:7px 8px;}

  /* ── Ticker ── */
  .ticker{gap:14px;padding:8px 12px;}
  .tick-item{min-width:72px;}
  .tick-label{font-size:.65rem;}
  .tick-val{font-size:.8rem;}

  /* ── Main: single column, natural scroll ── */
  .main{grid-template-columns:1fr;flex:none;min-width:0;}

  /* ── Left panel: stacked cards ── */
  .left-panel{
    flex-direction:column;
    border-right:none;
    border-bottom:1px solid var(--border);
    padding:12px;
    gap:12px;
    overflow-y:visible;
    min-width:0;
  }
  .left-panel .card{flex:none;width:100%;min-width:0;}
  .card{padding:14px;}
  .card-title{font-size:.74rem;}

  /* ── Trade form ── */
  .leverage-row{flex-wrap:wrap;gap:6px;}
  .btn-trade{padding:11px;font-size:.9rem;}

  /* ── Account summary buttons ── */
  .btn-close-all,.btn-reverse-all{font-size:.76rem;padding:7px 0;}

  /* ── Right panel ── */
  .right-panel{display:block;overflow:visible;min-width:0;width:100%;}
  .bottom-section{display:block;overflow:visible;min-width:0;min-height:300px;}

  /* ── Section tabs ── */
  .section-tabs{padding:0 12px;}
  .sec-tab{padding:10px 12px;font-size:.78rem;}

  /* ── Table content ── */
  .tab-content{padding:10px;overflow-y:visible;}
  .btn-sm{padding:4px 7px;font-size:.7rem;}

  /* ── Modal: bottom sheet ── */
  .modal-overlay{align-items:flex-end;}
  .modal{
    width:100%;
    max-width:100%;
    max-height:88vh;
    overflow-y:auto;
    border-bottom-left-radius:0;
    border-bottom-right-radius:0;
    padding:24px 16px 32px;
  }

  /* ── Settings modal: single column on mobile ── */
  .settings-modal{max-height:92vh;}
  .settings-grid{grid-template-columns:1fr;}

  /* ── Toast: full-width ── */
  .toast{right:12px;left:12px;bottom:16px;text-align:center;}
}