:root {
  /* LoomTrade palette A: indigo (the classic textile dye) for the bar, links and structure,
     saffron for the main action buttons, with dark text on saffron so it stays readable. */
  --bar: #1f2a5c;
  --on-bar: #ffffff;
  --on-bar-muted: #c9d0e8;
  --surface-page: #f7f8fb;
  --surface-card: #ffffff;
  --surface-sunken: #eef1f6;
  --ink: #161b2e;
  --ink-muted: #5b6275;
  --ink-inverse: #ffffff;
  --brand: #2b3a8c;
  --brand-strong: #1f2a5c;
  --brand-tint: #e8ecf8;
  --cta: #f5a623;
  --cta-strong: #e39312;
  --on-cta: #1f1400;
  --accent: #a85200;
  --accent-tint: #fef1dc;
  --success: #15803d;
  --success-tint: #eef8f2;
  --danger: #b42318;
  --danger-tint: #fdecea;
  --border: #dde1ea;
  --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 24px; --space-6: 32px;
  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 16px; --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(22,27,46,.06);
  --shadow-pop: 0 8px 24px rgba(22,27,46,.14);
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;
  --header-h: 56px;
  --tabbar-h: 62px;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bar:#1f2a5c; --on-bar:#ffffff; --on-bar-muted:#c9d0e8;
    --surface-page:#0e1224; --surface-card:#161b33; --surface-sunken:#0a0d1b;
    --ink:#e8ebf5; --ink-muted:#a4abc4; --ink-inverse:#0e1224;
    --brand:#9db0ff; --brand-strong:#c1cdff; --brand-tint:#1e2750;
    --cta:#f5a623; --cta-strong:#ffbe55; --on-cta:#1f1400;
    --accent:#f5a623; --accent-tint:#33260f;
    --success:#4ade80; --success-tint:#12301d; --danger:#f98080; --danger-tint:#3a1715;
    --border:#283050;
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
body {
  margin: 0;
  background: var(--surface-page);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 23px;
  overscroll-behavior-y: contain;
}

/* ---------- app shell ---------- */
.topbar {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: var(--bar);
  border-bottom: 0;
  padding: 0 var(--space-4);
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.logo {
  font-weight: 700; font-size: 16px; color: var(--on-bar);
  text-decoration: none; letter-spacing: -.01em; white-space: nowrap;
}
.topbar nav { margin-left: auto; display: flex; gap: var(--space-4); align-items: center; }
.topbar nav a {
  color: var(--on-bar-muted); text-decoration: none; font-size: 14px; white-space: nowrap;
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
.topbar nav a:hover { color: var(--on-bar); }
.topbar nav a.active { color: var(--on-bar); border-bottom-color: var(--on-bar); font-weight: 600; }

.wrap { max-width: 720px; margin: 0 auto; padding: var(--space-5) var(--space-4); }
.wrap.wide { max-width: 1040px; }

/* ---------- bottom tab bar (phones) ---------- */
.tabbar { display: none; }
@media (max-width: 760px) {
  .topbar nav { display: none; }
  .topbar { justify-content: center; }
  .logo { font-size: 17px; }
  body { padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom, 0px)); }
  .tabbar {
    display: flex;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 30;
    background: var(--surface-card);
    border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    box-shadow: 0 -1px 2px rgba(22,27,46,.05);
  }
  .tabbar a {
    flex: 1;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 3px;
    height: var(--tabbar-h);
    text-decoration: none;
    color: var(--ink-muted);
    font-size: 11px;
    font-weight: 500;
  }
  .tabbar a.active { color: var(--brand); }
  .tabbar svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; }
  .wrap { padding: var(--space-4) var(--space-3); }
  .card { border-radius: var(--radius-md); padding: var(--space-4); }
  h1 { font-size: 21px; line-height: 28px; }
}

/* ---------- cards and content ---------- */
.card {
  background: var(--surface-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-5); box-shadow: var(--shadow-card);
  margin-bottom: var(--space-4);
}
h1 { font-size: 24px; line-height: 31px; font-weight: 650; letter-spacing: -.01em; margin: 0 0 var(--space-2); }
h2 { font-size: 18px; line-height: 25px; font-weight: 600; margin: 0 0 var(--space-3); }
.sub { color: var(--ink-muted); font-size: 14px; margin: 0 0 var(--space-5); }

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
input[type=text], input[type=tel], input[type=email], input[type=number], input[type=date],
input[type=time], input[type=password], select, textarea {
  width: 100%; padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-card); color: var(--ink); font: inherit; font-size: 16px;
  margin-bottom: var(--space-4); appearance: none;
}
select { background-image: linear-gradient(45deg, transparent 50%, var(--ink-muted) 50%),
         linear-gradient(135deg, var(--ink-muted) 50%, transparent 50%);
         background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
         background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 36px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: var(--brand); }

.btn {
  display: inline-block; background: var(--cta); color: var(--on-cta); border: 0;
  padding: 12px 20px; border-radius: var(--radius-md); font: inherit; font-weight: 600;
  cursor: pointer; text-decoration: none; text-align: center;
}
.btn:active { transform: scale(.98); }
.btn:hover { background: var(--cta-strong); }
.btn.ghost { background: transparent; color: var(--brand); border: 1px solid var(--border); }
.btn.small { padding: 8px 14px; font-size: 14px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.msg { padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); margin-bottom: var(--space-4); font-size: 14px; }
.msg.err { background: var(--danger-tint); color: var(--danger); }
.msg.ok { background: var(--success-tint); color: var(--success); }

.steps { display: flex; gap: var(--space-2); margin-bottom: var(--space-5); font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; flex-wrap: wrap; }
.steps span { color: var(--ink-muted); }
.steps .on { color: var(--brand); }
.hint { font-size: 13px; color: var(--ink-muted); margin: -10px 0 var(--space-4); }
.otpbox { font-family: var(--font-mono); font-size: 22px; letter-spacing: .4em; text-align: center; }

@media (min-width: 761px) {
  .btn.small { padding: 7px 14px; }
  input[type=text], input[type=tel], input[type=email], input[type=number], input[type=date],
  input[type=time], input[type=password], select, textarea { font-size: 15px; }
}