:root {
  --bg: #FFFFFF;
  --surface: #F3F6FC;
  --surface-raised: #FFFFFF;
  --border: #E1E6F2;
  --text: #0F1729;
  --text-muted: #5B6478;
  --gold: #C9972D;
  --gold-dim: #F0D9A6;
  --buy: #128F5E;
  --sell: #C33B49;
  --shadow-sm: 0 1px 2px rgba(15, 23, 41, 0.04), 0 1px 1px rgba(15, 23, 41, 0.03);
  --shadow-md: 0 10px 28px rgba(15, 23, 41, 0.08), 0 2px 6px rgba(15, 23, 41, 0.04);
  --shadow-gold: 0 14px 32px rgba(201, 151, 45, 0.2);
}

* { box-sizing: border-box; }

html { scroll-padding-top: env(safe-area-inset-top, 0px); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  line-height: 1.5;
}

.num { font-family: 'IBM Plex Mono', monospace; font-variant-numeric: tabular-nums; }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.topbar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.wordmark { font-family: 'Fraunces', serif; font-size: 1.15rem; font-weight: 600; }
.wordmark span { color: var(--gold); font-style: italic; font-weight: 500; }

.topbar-right { display: flex; align-items: center; gap: 0.75rem; }

.session-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.session-chip i { color: var(--buy); }
.session-chip span { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.session-chip[hidden] { display: none; }

.btn-ghost, .btn-primary, .btn-secondary {
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 8px;
  padding: 0.6rem 1.1rem;
  cursor: pointer;
  transition: filter 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}
.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--text); }
.btn-primary {
  background: var(--gold);
  color: #241A06;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover { filter: brightness(1.06); }
.btn-secondary {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover { border-color: var(--gold); }

/* ---------- Shell: sidebar + content ---------- */
.shell { display: flex; min-height: calc(100vh - 64px); }

.sidebar {
  width: 230px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--surface);
}

.sidebar nav { display: flex; flex-direction: column; gap: 0.3rem; }

.side-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  text-align: left;
}
.side-link i { width: 1.1rem; text-align: center; }
.side-link em { margin-left: auto; font-style: normal; font-size: 0.7rem; font-family: 'IBM Plex Mono', monospace; color: var(--gold); }
.side-link:hover { background: var(--surface-raised); color: var(--text); }
.side-link.active { background: var(--surface-raised); border-color: var(--gold-dim); color: var(--gold); box-shadow: var(--shadow-sm); }

.sidebar-foot { color: var(--text-muted); font-size: 0.75rem; line-height: 1.5; margin: 0; }

.content { flex: 1; padding: 2rem 2.5rem 4rem; max-width: 1040px; }

.tab-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; margin-bottom: 1.75rem; flex-wrap: wrap; }
.tab-head.centered { display: block; text-align: center; }
.tab-head h1 { font-family: 'Fraunces', serif; font-weight: 400; font-size: 1.9rem; margin: 0 0 0.35rem; }
.tab-head .sub { color: var(--text-muted); margin: 0; }
.price-pill { font-family: 'IBM Plex Mono', monospace; font-size: 0.7rem; color: var(--gold); border: 1px solid var(--gold-dim); border-radius: 999px; padding: 0.15rem 0.6rem; vertical-align: middle; margin-left: 0.5rem; }

.status-badge { display: flex; align-items: center; gap: 0.5rem; background: var(--surface-raised); border: 1px solid var(--border); border-radius: 999px; padding: 0.5rem 1rem; font-size: 0.8rem; color: var(--text-muted); box-shadow: var(--shadow-sm); }
.status-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-muted); }
.status-badge.active .dot { background: var(--buy); }
.status-badge.active { color: var(--buy); border-color: var(--buy); }

/* ---------- Metric grid ---------- */
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.75rem; }
.metric-card { background: var(--surface-raised); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem; display: flex; flex-direction: column; gap: 0.35rem; box-shadow: var(--shadow-md); }
.metric-label { color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.03em; }
.num-sub { text-transform: none; letter-spacing: 0; }
.metric-card strong { font-size: 1.5rem; font-weight: 600; }
.metric-detail { font-size: 0.78rem; color: var(--text-muted); }
.buy-text { color: var(--buy); }

/* ---------- Panel / steps ---------- */
.panel { background: var(--surface-raised); border: 1px solid var(--border); border-radius: 12px; padding: 1.75rem; box-shadow: var(--shadow-md); }
.panel h2 { font-family: 'Fraunces', serif; font-weight: 400; font-style: italic; font-size: 1.3rem; margin: 0 0 1.25rem; }
.panel + .panel { margin-top: 1.5rem; }
.panel h3 { font-size: 0.95rem; font-weight: 600; margin: 1.5rem 0 0.75rem; color: var(--text); }
.panel h3:first-of-type { margin-top: 0.25rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.data-table th, .data-table td { padding: 0.6rem 0.75rem; text-align: left; white-space: nowrap; }
.data-table thead th { background: var(--surface); color: var(--text-muted); font-weight: 500; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.03em; border-bottom: 1px solid var(--border); }
.data-table tbody tr:not(:last-child) { border-bottom: 1px solid var(--border); }
.sell-text { color: var(--sell); }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.steps li { color: var(--text-muted); line-height: 1.6; }
.steps li strong { color: var(--text); font-weight: 600; }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field-wide { grid-column: 1 / -1; }
.field label, .field-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }
.field input[type="text"], .field select, input[type="email"], select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.92rem;
}
.field input:focus, .field select:focus, input[type="email"]:focus, select:focus {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
}
.hint { color: var(--text-muted); font-size: 0.8rem; margin: -0.5rem 0 0; }
.form-actions { display: flex; justify-content: flex-end; }

.pair-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.6rem; }
.pair-grid label { display: flex; align-items: center; gap: 0.5rem; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 0.55rem 0.75rem; font-size: 0.85rem; cursor: pointer; }
.pair-grid input { accent-color: var(--gold); }

/* ---------- Tape (signal blotter) ---------- */
.tape { display: flex; flex-direction: column; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow-sm); }

.tape-row { display: grid; grid-template-columns: 4px 1fr auto; align-items: center; background: var(--surface-raised); padding: 0.85rem 1rem 0.85rem 0; gap: 0.9rem; }
.tape-row.buy { border-left: none; }
.tape-row .edge { height: 100%; width: 4px; }
.tape-row.buy .edge { background: var(--buy); }
.tape-row.sell .edge { background: var(--sell); }

.tape-row .main .symbol { font-weight: 600; font-size: 0.95rem; }
.tape-row .main .meta { color: var(--text-muted); font-size: 0.8rem; margin-top: 0.15rem; }

.tape-row .figures { text-align: right; font-size: 0.85rem; }
.tape-row .figures .entry { color: var(--text); }
.tape-row .figures .sltp { color: var(--text-muted); margin-top: 0.15rem; }

.tape-row.restricted .main .meta { color: var(--gold); }

.tape-row.skeleton { grid-template-columns: 4px 1fr; padding: 1.1rem 1rem; }
.tape-row.skeleton .edge { background: var(--border); }
.tape-row.skeleton::after { content: ""; display: block; height: 0.9rem; width: 60%; background: var(--border); border-radius: 4px; }

.tape-row-wrap { background: var(--surface-raised); }
.signal-explanation {
  padding: 0 1rem 0.85rem; margin-top: -0.3rem;
  font-size: 0.82rem; line-height: 1.5; color: var(--text-muted);
}
.signal-explanation i { color: var(--gold); margin-right: 0.3rem; }
.signal-actions { padding: 0 1rem 0.85rem; display: flex; align-items: center; gap: 0.75rem; }
.check-status-btn { background: none; border: 1px solid var(--border); color: var(--text-muted); font-size: 0.78rem; border-radius: 6px; padding: 0.35rem 0.75rem; cursor: pointer; font-family: inherit; }
.check-status-btn:hover { border-color: var(--gold); color: var(--text); }
.signal-status-result { font-size: 0.8rem; color: var(--text-muted); }
.signal-status-result.valid { color: var(--buy); }
.signal-status-result.invalid { color: var(--sell); }

/* ---------- Pricing ---------- */
.price-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin: 2rem 0 1rem; }
.price-card { background: var(--surface-raised); border: 1px solid var(--border); border-radius: 16px; padding: 1.75rem; display: flex; flex-direction: column; gap: 0.5rem; position: relative; box-shadow: var(--shadow-md); }
.price-card.featured { border-color: var(--gold); box-shadow: var(--shadow-gold); }
.featured-pill { position: absolute; top: -0.7rem; right: 1.5rem; background: var(--gold); color: #241A06; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; padding: 0.25rem 0.7rem; border-radius: 999px; }
.price-tag { color: var(--text-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; margin: 0; }
.price-card h3 { font-family: 'Fraunces', serif; font-weight: 500; font-size: 1.35rem; margin: 0; }
.price-amount { font-family: 'Fraunces', serif; font-size: 2rem; margin: 0.25rem 0; }
.price-amount span { font-family: 'Inter', sans-serif; font-size: 0.9rem; color: var(--text-muted); }
.price-detail { color: var(--text-muted); font-size: 0.85rem; line-height: 1.5; margin: 0 0 0.75rem; flex: 1; }
.price-footnote { color: var(--text-muted); font-size: 0.8rem; text-align: center; }

/* ---------- Settings ---------- */
.settings-panel, .panel.setting-row-holder { display: flex; flex-direction: column; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
#settingsPanel.panel { padding: 0; display: flex; flex-direction: column; gap: 1px; background: var(--border); overflow: hidden; box-shadow: var(--shadow-md); }
#settingsPanel[hidden] { display: none; }
.setting-row { background: var(--surface-raised); padding: 1.25rem 1.5rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.setting-row.block { flex-direction: column; align-items: stretch; gap: 0.75rem; }
.setting-label { margin: 0 0 0.25rem; font-weight: 500; }
.setting-sub { margin: 0; color: var(--text-muted); font-size: 0.85rem; }

.toggle { position: relative; display: inline-block; cursor: pointer; }
.toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track { display: block; width: 44px; height: 26px; background: var(--border); border-radius: 999px; transition: background 0.15s; }
.toggle-thumb { display: block; width: 20px; height: 20px; margin: 3px; background: #FFFFFF; border: 1px solid var(--border); border-radius: 50%; transition: transform 0.15s, background 0.15s; }
.toggle input:checked + .toggle-track { background: var(--gold-dim); }
.toggle input:checked + .toggle-track .toggle-thumb { transform: translateX(18px); background: var(--gold); border-color: var(--gold); }

.status-line { color: var(--text-muted); margin-top: 0.8rem; font-size: 0.9rem; }
.status-line.error { color: var(--sell); }
.status-line.ok { color: var(--buy); }

/* ---------- Modals ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(15, 23, 41, 0.4);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
/* [hidden] and .modal-overlay have equal CSS specificity, so without this
   rule the browser's default "hidden = display:none" loses to the flex
   rule above and both modals show on every page load. This restores it. */
.modal-overlay[hidden] { display: none; }
.modal {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  max-width: 420px;
  width: 100%;
  position: relative;
  box-shadow: 0 24px 60px rgba(15, 23, 41, 0.22);
}
.modal h2 { font-family: 'Fraunces', serif; font-weight: 500; font-size: 1.3rem; margin: 0 0 0.5rem; }
.modal-sub { color: var(--text-muted); font-size: 0.88rem; margin: 0 0 1.25rem; }
.modal form { display: flex; flex-direction: column; gap: 0.75rem; }
/* Same [hidden]-vs-specificity issue as .modal-overlay above: ".modal form"
   (0,1,1) beats the browser's default "[hidden] { display:none }" (0,1,0),
   so a hidden form inside the modal would otherwise still render as flex. */
.modal form[hidden] { display: none; }
.modal-close { position: absolute; top: 1.1rem; right: 1.1rem; background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1rem; }
.modal-close:hover { color: var(--text); }

.pay-options { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.25rem; }
.pay-option { display: flex; justify-content: space-between; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 0.6rem 0.9rem; font-size: 0.85rem; }
.pay-option span { color: var(--text-muted); }

.pay-method-tabs { display: flex; gap: 0.4rem; margin-bottom: 1.1rem; border-bottom: 1px solid var(--border); }
.pay-method-tab {
  background: none; border: none; cursor: pointer;
  padding: 0.5rem 0.2rem 0.7rem; margin-bottom: -1px;
  font-size: 0.85rem; font-weight: 500; color: var(--text-muted);
  border-bottom: 2px solid transparent;
}
.pay-method-tab.active { color: var(--text); border-bottom-color: var(--gold); }
.pay-method-panel[hidden] { display: none; }

footer { text-align: center; color: var(--text-muted); font-size: 0.8rem; padding: 2rem; border-top: 1px solid var(--border); }

@media (max-width: 900px) {
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .price-cards { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .pair-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .shell { flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; overflow-x: auto; border-right: none; border-bottom: 1px solid var(--border); padding: 0.75rem; }
  .sidebar nav { flex-direction: row; }
  .side-link span { display: none; }
  .side-link em { display: none; }
  .sidebar-foot { display: none; }
  .content { padding: 1.5rem 1.25rem 3rem; }
  .topbar { padding: 1rem 1.25rem; }
}