:root {
  --bg-primary: #0b0e11;
  --bg-secondary: #1e2329;
  --bg-tertiary: #2b3139;
  --bg-hover: #363c45;
  --border: #2b3139;
  --text-primary: #eaecef;
  --text-secondary: #848e9c;
  --text-third: #5e6673;
  --green: #0ecb81;
  --green-bg: rgba(14,203,129,0.1);
  --red: #f6465d;
  --red-bg: rgba(246,70,93,0.1);
  --yellow: #f0b90b;
  --yellow-dim: #c99d05;
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  overflow-x: hidden;
}

/* === Header === */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 56px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.header-left { display:flex; align-items:center; gap:20px; }
.header-right { display:flex; align-items:center; gap:16px; }

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--yellow);
  letter-spacing: -0.5px;
}
.logo-accent { color: var(--text-primary); font-weight: 400; }

.pair-info { display:flex; align-items:center; gap:16px; }
.pair-name { font-weight:600; font-size:15px; }
.last-price-header { font-size:18px; font-weight:700; color:var(--green); }
.pair-stats { display:flex; gap:16px; }
.stat { display:flex; flex-direction:column; }
.stat-label { font-size:10px; color:var(--text-secondary); }
.stat span:last-child { font-size:12px; font-family:monospace; }

.node-info { display:flex; align-items:center; gap:8px; font-size:11px; color:var(--text-secondary); }
.status-dot { font-size:10px; }
.status-dot.online { color:var(--green); }
.status-dot.offline { color:var(--red); }
.user-addr { font-family:monospace; font-size:11px; color:var(--yellow); }

/* === Buttons === */
.btn-primary {
  background:var(--yellow); color:#0b0e11; border:none;
  padding:8px 16px; border-radius:4px; font-weight:600; cursor:pointer; font-size:13px;
}
.btn-primary:hover { background:var(--yellow-dim); }
.btn-outline {
  background:transparent; color:var(--text-primary); border:1px solid var(--border);
  padding:7px 14px; border-radius:4px; cursor:pointer; font-size:12px;
}
.btn-outline:hover { border-color:var(--text-secondary); }
.btn-tiny {
  background:var(--bg-tertiary); color:var(--text-secondary); border:none;
  padding:2px 8px; border-radius:3px; cursor:pointer; font-size:10px;
}

/* === Main Layout === */
.exchange-main {
  display: grid;
  grid-template-columns: 1fr 280px 320px;
  gap: 1px;
  height: calc(100vh - 56px - 41px);
  background: var(--border);
}

.left-column, .center-column, .right-column {
  background: var(--bg-primary);
  overflow-y: auto;
}

.left-column { display:flex; flex-direction:column; overflow:hidden; }
.right-column { display:flex; flex-direction:column; }

/* === Panels === */
.panel {
  border-bottom: 1px solid var(--border);
}
.panel-header {
  display:flex; justify-content:space-between; align-items:center;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.panel-header h3 {
  font-size:12px; font-weight:600; color:var(--text-secondary); text-transform:uppercase; letter-spacing:0.5px;
}

/* === Chart === */
.chart-panel { flex:none; height:50%; min-height:120px; }
.chart-container { position:relative; height:calc(100% - 40px); min-height:80px; }

/* === Resize Handle === */
.resize-handle {
  height:6px; cursor:row-resize; display:flex; align-items:center; justify-content:center;
  background:var(--bg-secondary); border-top:1px solid var(--border); border-bottom:1px solid var(--border);
  flex-shrink:0; user-select:none; z-index:10;
}
.resize-handle:hover, .resize-handle.active { background:var(--bg-tertiary); }
.resize-grip {
  width:40px; height:2px; background:var(--text-third); border-radius:1px;
}
.chart-container canvas { width:100% !important; height:100% !important; }
#tvChart { width:100%; height:100%; }
.chart-empty {
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  color:var(--text-third); font-size:13px; pointer-events:none;
}
.chart-interval-tabs { display:flex; gap:2px; }
.ci-btn {
  padding:3px 8px; background:transparent; border:1px solid var(--border);
  border-radius:3px; color:var(--text-third); cursor:pointer; font-size:10px;
  font-weight:600; transition:all 0.15s;
}
.ci-btn:hover { color:var(--text-primary); border-color:var(--text-secondary); }
.ci-btn.active { background:var(--yellow); color:#0b0e11; border-color:var(--yellow); }

/* === Order Book === */
.orderbook-panel { height:100%; display:flex; flex-direction:column; }
.ob-col-header, .trades-col-header {
  display:grid; grid-template-columns:1fr 1fr 1fr;
  padding:6px 12px; font-size:10px; color:var(--text-third);
  border-bottom:1px solid var(--border);
}
.ob-side {
  flex:1; overflow-y:auto; min-height:0;
}
.sell-side { display:flex; flex-direction:column; justify-content:flex-end; }

.ob-row {
  display:grid; grid-template-columns:1fr 1fr 1fr;
  padding:1px 12px; font-size:12px; font-family:monospace;
  cursor:pointer; position:relative; line-height:22px;
}
.ob-row:hover { background:var(--bg-hover); }
.ob-row .price { z-index:1; }
.ob-row .amount { z-index:1; text-align:right; }
.ob-row .cumulative { z-index:1; text-align:right; color:var(--text-secondary); }
.ob-row.sell .price { color:var(--red); }
.ob-row.buy .price { color:var(--green); }

.ob-row .depth-bar {
  position:absolute; top:0; right:0; bottom:0;
  opacity:0.12; pointer-events:none;
}
.ob-row.sell .depth-bar { background:var(--red); }
.ob-row.buy .depth-bar { background:var(--green); }

.spread-bar {
  display:flex; justify-content:center; align-items:center; gap:12px;
  padding:8px 12px;
  border-top:1px solid var(--border); border-bottom:1px solid var(--border);
  background:var(--bg-secondary);
}
.spread-price { font-size:16px; font-weight:700; color:var(--green); font-family:monospace; }
.spread-label { font-size:10px; color:var(--text-third); }

/* === Balance === */
.balance-panel { padding:12px; }
.balance-grid { display:flex; gap:16px; }
.balance-coin { display:flex; align-items:center; gap:8px; flex:1; }
.balance-icon {
  width:32px; height:32px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:16px; font-weight:bold;
}
.btct-icon { background:#f7931a22; color:#f7931a; }
.doge-icon { background:#c3a63422; color:#c3a634; }
.balance-label { font-size:10px; color:var(--text-secondary); }
.balance-value { font-size:15px; font-weight:600; font-family:monospace; }
.deposit-row {
  display:flex; align-items:center; justify-content:space-between;
  margin-top:8px; padding-top:8px; border-top:1px solid var(--border);
}
.mono { font-family:monospace; font-size:10px; color:var(--text-secondary); }

/* === Orders === */
.order-panel { }
.order-type-tabs { display:flex; }
.order-tab {
  flex:1; padding:10px; text-align:center;
  background:var(--bg-secondary); border:none; color:var(--text-secondary);
  font-size:14px; font-weight:600; cursor:pointer;
  border-bottom:2px solid transparent;
  transition: all 0.15s;
}
.order-tab:hover { color:var(--text-primary); }
.order-tab.buy-active {
  color:var(--green); border-bottom-color:var(--green); background:var(--bg-primary);
}
.order-tab.sell-active {
  color:var(--red); border-bottom-color:var(--red); background:var(--bg-primary);
}

.order-form-body { padding:12px; }

.form-row { margin-bottom:8px; }
.form-row label { display:block; font-size:11px; color:var(--text-secondary); margin-bottom:3px; }

.input-group {
  display:flex; align-items:center;
  background:var(--bg-tertiary); border:1px solid var(--border); border-radius:4px;
  overflow:hidden;
}
.input-group:focus-within { border-color:var(--yellow); }
.input-group input {
  flex:1; padding:8px 10px; background:transparent; border:none; outline:none;
  color:var(--text-primary); font-size:13px; font-family:monospace;
}
.input-suffix {
  padding:0 10px; font-size:11px; color:var(--text-secondary);
  white-space:nowrap;
}

.percent-btns { display:flex; gap:4px; margin-bottom:8px; }
.percent-btns button {
  flex:1; padding:4px; background:var(--bg-tertiary);
  border:1px solid var(--border); border-radius:3px;
  color:var(--text-secondary); cursor:pointer; font-size:11px;
}
.percent-btns button:hover { border-color:var(--yellow); color:var(--yellow); }

.total-row { margin-bottom:4px; }

.fee-note {
  display:flex; justify-content:space-between; align-items:center;
  padding:0 2px; margin-bottom:10px;
  font-size:10px; color:var(--text-third);
}
.fee-note span:last-child { color:var(--yellow-dim); font-family:monospace; }

.login-prompt {
  text-align:center; padding:8px; color:var(--text-secondary); font-size:12px;
}
.login-prompt a { color:var(--yellow); text-decoration:none; }

.btn-order {
  width:100%; padding:10px; border:none; border-radius:4px;
  font-size:14px; font-weight:700; cursor:pointer; color:#fff;
  transition:opacity 0.15s;
}
.btn-order:hover { opacity:0.85; }
.btn-buy-order { background:var(--green); }
.btn-sell-order { background:var(--red); }

/* === Recent Trades === */
.trades-panel { flex:1; min-height:200px; display:flex; flex-direction:column; }
.trades-list { flex:1; overflow-y:auto; }
.trade-row {
  display:grid; grid-template-columns:1fr 1fr 1fr;
  padding:1px 12px; font-size:12px; font-family:monospace; line-height:22px;
}
.trade-row .price.up { color:var(--green); }
.trade-row .price.down { color:var(--red); }
.trade-row .time { text-align:right; color:var(--text-secondary); }

/* === My Orders === */
#myOrdersSection { flex:1; min-height:80px; overflow-y:auto; display:flex; flex-direction:column; }
#myOrdersSection .table-wrap { flex:1; overflow-y:auto; }
.tab-group { display:flex; gap:2px; }
.tab-btn {
  padding:4px 10px; background:transparent; border:1px solid var(--border);
  border-radius:3px; color:var(--text-secondary); cursor:pointer; font-size:11px;
}
.tab-btn.active { background:var(--bg-tertiary); color:var(--text-primary); }

.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
th { padding:6px 12px; font-size:10px; color:var(--text-third); text-align:left; font-weight:500; border-bottom:1px solid var(--border); }
td { padding:5px 12px; font-size:12px; font-family:monospace; border-bottom:1px solid var(--border); }
.type-buy { color:var(--green); }
.type-sell { color:var(--red); }
.btn-cancel {
  padding:2px 8px; background:transparent; border:1px solid var(--red);
  color:var(--red); border-radius:3px; cursor:pointer; font-size:10px;
}
.btn-cancel:hover { background:var(--red-bg); }

/* === Withdraw === */
.form-input {
  width:100%; padding:8px 10px; background:var(--bg-tertiary);
  border:1px solid var(--border); border-radius:4px;
  color:var(--text-primary); font-size:13px; outline:none;
}
.form-input:focus { border-color:var(--yellow); }
.form-select { appearance:none; cursor:pointer; }
.fee-info { display:block; color:var(--text-third); margin:8px 0; padding:0 12px; }
.withdraw-summary {
  margin:8px 12px; padding:10px 12px; background:var(--bg-card); border:1px solid var(--border);
  border-radius:6px; font-size:13px;
}
.ws-row { display:flex; justify-content:space-between; padding:4px 0; color:var(--text-secondary); }
.ws-row span:last-child { font-family:'Roboto Mono',monospace; color:var(--text-primary); }
.ws-total { border-top:1px solid var(--border); margin-top:4px; padding-top:6px; font-weight:600; }
.ws-total span:last-child { color:var(--yellow); }
.ws-receive { color:var(--green) !important; font-weight:600; }
.ws-note { margin-top:6px; font-size:11px; color:var(--text-third); }
.btn-withdraw {
  width:calc(100% - 24px); margin:0 12px 12px;
  padding:8px; background:var(--red); border:none; border-radius:4px;
  color:#fff; font-weight:600; cursor:pointer;
}

/* === Modal === */
.modal-overlay {
  display:none; position:fixed; inset:0;
  background:rgba(0,0,0,0.7); z-index:1000;
  justify-content:center; align-items:center;
}
.modal-overlay.active { display:flex; }
.modal-box {
  background:var(--bg-secondary); border:1px solid var(--border);
  border-radius:12px; width:380px; max-width:90vw;
  overflow:hidden;
}
.modal-top {
  display:flex; justify-content:space-between; align-items:center;
  padding:16px 20px; border-bottom:1px solid var(--border);
}
.modal-top h3 { font-size:16px; }
.modal-x {
  background:none; border:none; color:var(--text-secondary);
  font-size:18px; cursor:pointer;
}
.modal-body { padding:20px; }
.modal-body .form-row { margin-bottom:14px; }
.modal-body label { font-size:12px; margin-bottom:4px; }
.full-w { width:100%; margin-top:8px; }

/* Confirm modal */
.modal-sm { width:340px; }
.confirm-msg { margin-bottom:14px; color:var(--text-secondary); font-size:13px; line-height:1.5; }
.confirm-btns { display:flex; gap:10px; margin-top:16px; }
.confirm-btns button { flex:1; padding:9px; }

/* === Toast === */
.toast-container {
  position:fixed; top:70px; left:50%; transform:translateX(-50%);
  z-index:2000; display:flex; flex-direction:column; align-items:center;
}
.toast {
  padding:12px 24px; border-radius:8px; margin-bottom:8px;
  font-size:13px; font-weight:600; animation:toastDrop 0.35s;
  min-width:280px; text-align:center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  border-left:none; border:1px solid;
}
.toast.success { background:rgba(14,203,129,0.15); border-color:var(--green); color:var(--green); }
.toast.error { background:rgba(246,70,93,0.15); border-color:var(--red); color:var(--red); }
.toast.info { background:rgba(240,185,11,0.15); border-color:var(--yellow); color:var(--yellow); }
@keyframes toastDrop { from { transform:translateY(-30px);opacity:0; } to { transform:translateY(0);opacity:1; } }

/* === Scrollbar === */
::-webkit-scrollbar { width:4px; }
::-webkit-scrollbar-track { background:var(--bg-primary); }
::-webkit-scrollbar-thumb { background:var(--bg-tertiary); border-radius:2px; }

/* === Responsive === */
@media (max-width:1024px) {
  .exchange-main { grid-template-columns:1fr; height:auto; }
  .pair-stats { display:none; }
  .chart-panel { min-height:250px; }
}

/* ========== Navigation ========== */
.main-nav { display:flex; gap:4px; margin-left:16px; }
.nav-link {
  padding:6px 14px; color:var(--text-secondary); text-decoration:none;
  font-size:13px; font-weight:500; border-radius:4px; transition:all 0.15s;
}
.nav-link:hover { color:var(--text-primary); background:var(--bg-tertiary); }
.nav-link.active { color:var(--yellow); background:rgba(240,185,11,0.08); }

/* ========== Market Info Bar ========== */
.market-bar {
  display:flex; align-items:center; gap:20px;
  padding:8px 16px; background:var(--bg-secondary); border-bottom:1px solid var(--border);
}
.market-bar .pair-name { font-weight:600; font-size:15px; }
.market-bar .pair-stats { display:flex; gap:16px; }

/* ========== Page Transitions ========== */
.page-content { display:none; }
.page-content.active { display:block; }

/* ========== Common Page Layout ========== */
.page-inner { max-width:1100px; margin:0 auto; padding:20px 16px; }
.page-title-bar {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:20px;
}
.page-title-bar h2 { font-size:20px; font-weight:700; }

/* ========== History Page ========== */
.history-tabs, .admin-tabs { display:flex; gap:2px; margin-bottom:16px; }
.htab {
  padding:8px 18px; background:var(--bg-secondary); border:1px solid var(--border);
  border-radius:6px; color:var(--text-secondary); font-size:13px; cursor:pointer;
  font-weight:500; transition:all 0.15s;
}
.htab:hover { color:var(--text-primary); }
.htab.active { background:var(--yellow); color:#0b0e11; border-color:var(--yellow); font-weight:700; }

.history-table-wrap, .admin-table-wrap { overflow-x:auto; }

.full-table { width:100%; border-collapse:collapse; }
.full-table th {
  padding:10px 14px; text-align:left; font-size:11px;
  color:var(--text-third); font-weight:600; text-transform:uppercase;
  border-bottom:1px solid var(--border); background:var(--bg-secondary);
  position:sticky; top:0;
}
.full-table td {
  padding:10px 14px; font-size:12px; font-family:monospace;
  border-bottom:1px solid var(--border);
}
.full-table tr:hover { background:var(--bg-hover); }

.empty-state {
  text-align:center; padding:50px 20px; color:var(--text-third); font-size:14px;
}

/* ========== Wallet Page ========== */
.wallet-cards { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:24px; }
.wallet-card {
  background:var(--bg-secondary); border:1px solid var(--border);
  border-radius:12px; padding:20px; overflow:hidden;
}
.wc-header { display:flex; align-items:center; gap:10px; margin-bottom:16px; }
.wc-header h3 { font-size:18px; }
.wc-balance { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:16px; }
.wc-label { font-size:11px; color:var(--text-secondary); }
.wc-value { font-size:24px; font-weight:700; font-family:monospace; }
.wc-info { padding:12px 0; border-top:1px solid var(--border); }
.wc-row { display:flex; align-items:center; gap:8px; margin-bottom:6px; }
.mono-sm { font-family:monospace; font-size:11px; color:var(--text-secondary); word-break:break-all; }
.wc-actions {
  margin-top:16px; padding-top:16px; border-top:1px solid var(--border);
}
.wc-actions h4 { font-size:13px; color:var(--text-secondary); margin-bottom:12px; }
.wc-actions .form-row { margin-bottom:8px; }
.wc-actions .form-input { width:100%; }
.wc-actions .btn-withdraw { width:100%; margin:8px 0 0; }

.wallet-recent { margin-top:8px; }
.wallet-recent h3 {
  font-size:14px; color:var(--text-secondary); margin-bottom:12px;
  padding-bottom:8px; border-bottom:1px solid var(--border);
}

/* Delete Account */
.delete-account-section {
  margin-top:24px; padding:20px;
  background:var(--bg-secondary); border:1px solid var(--border);
  border-radius:12px;
}
.delete-account-section h3 { font-size:14px; color:var(--red); margin-bottom:8px; }
.delete-warn { font-size:12px; color:var(--text-third); margin-bottom:14px; line-height:1.5; }
.btn-delete-account {
  padding:8px 20px; background:transparent; border:1px solid var(--red);
  color:var(--red); border-radius:4px; cursor:pointer; font-size:12px; font-weight:600;
  transition:all 0.15s;
}
.btn-delete-account:hover { background:var(--red); color:#fff; }

/* ========== Admin Page ========== */
.admin-badge {
  background:var(--red); color:#fff; font-size:10px; font-weight:700;
  padding:3px 10px; border-radius:4px; letter-spacing:1px;
}
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-bottom:20px; }
.stat-card {
  background:var(--bg-secondary); border:1px solid var(--border);
  border-radius:10px; padding:16px 20px; text-align:center;
}
.sc-label { font-size:11px; color:var(--text-secondary); margin-bottom:6px; }
.sc-value { font-size:22px; font-weight:700; font-family:monospace; }
.sc-value.warn { color:var(--yellow); }

.btn-approve {
  padding:3px 10px; background:var(--green); color:#fff; border:none;
  border-radius:4px; cursor:pointer; font-size:11px; font-weight:600;
}
.btn-reject {
  padding:3px 10px; background:var(--red); color:#fff; border:none;
  border-radius:4px; cursor:pointer; font-size:11px; font-weight:600; margin-left:4px;
}

/* Status badge */
.status-badge {
  padding:2px 8px; border-radius:3px; font-size:10px; font-weight:600;
}
.status-badge.confirmed, .status-badge.sent { background:var(--green-bg); color:var(--green); }
.status-badge.pending { background:rgba(240,185,11,0.1); color:var(--yellow); }
.status-badge.failed, .status-badge.rejected { background:var(--red-bg); color:var(--red); }

@media (max-width:768px) {
  .wallet-cards { grid-template-columns:1fr; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .main-nav { gap:0; }
  .nav-link { padding:6px 8px; font-size:12px; }
}

/* === Register 3-step === */
.modal-register .modal-box { width:400px; }
.step-indicator {
  display:flex; align-items:center; justify-content:center;
  gap:0; margin-bottom:18px;
}
.step {
  width:28px; height:28px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:12px; font-weight:700;
  background:var(--bg-tertiary); color:var(--text-secondary);
  border:2px solid var(--border);
}
.step.active {
  background:var(--accent); color:#fff; border-color:var(--accent);
}
.step.done {
  background:var(--green); color:#fff; border-color:var(--green); font-size:14px;
}
.step-line {
  width:40px; height:2px; background:var(--border);
}
.step-line.done {
  background:var(--green);
}
.step-title {
  text-align:center; font-size:14px; font-weight:600;
  margin-bottom:16px; color:var(--text-primary);
}
.verify-info {
  background:var(--bg-tertiary); border:1px solid var(--border);
  border-radius:8px; padding:14px; margin-bottom:12px; text-align:center;
}
.verify-info p { font-size:12px; color:var(--text-secondary); margin-bottom:6px; }
.verify-amount {
  font-size:16px; font-weight:700; color:var(--accent);
  padding:8px; background:var(--bg-primary); border-radius:6px;
  margin-bottom:10px; word-break:break-all;
}
.verify-to {
  font-size:12px; font-weight:500; color:var(--text-primary);
  padding:6px; background:var(--bg-primary); border-radius:6px;
  margin-bottom:8px; word-break:break-all; font-family:monospace;
}
.btn-tiny {
  background:var(--accent); color:#fff; border:none;
  padding:4px 12px; border-radius:4px; font-size:11px;
  cursor:pointer; font-weight:600;
}
.btn-tiny:hover { opacity:0.85; }
.verify-note {
  font-size:11px; color:var(--text-secondary);
  text-align:center; margin-bottom:14px; line-height:1.6;
}
.verify-status {
  text-align:center; font-size:12px; margin-top:10px;
  min-height:18px; font-weight:500;
}
.verify-status.success { color:var(--green); }
.verify-status.error { color:var(--red); }