:root {
  --bg: #000;
  --card: #111113;
  --line: #232326;
  --text: #f4f4f5;
  --muted: #8b8b92;
  --accent: #3e6ae1;
  --ok: #3ecf8e;
  --warn: #e5a23c;
  --radius: 14px;
  /* Espacios que se adaptan al alto del teléfono, para que la pantalla principal quepa sin scroll */
  --gap-s: clamp(6px, 1vh, 10px);
  --gap-m: clamp(8px, 1.5vh, 16px);
  --pad-card: clamp(9px, 1.5vh, 16px);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}
.app {
  max-width: 480px; margin: 0 auto;
  min-height: 100dvh;
  padding: calc(env(safe-area-inset-top) + 6px) 16px calc(env(safe-area-inset-bottom) + 70px);
  display: flex; flex-direction: column;
}
.top { display: flex; justify-content: space-between; align-items: center; height: 38px; }
.brand { font-size: 12px; letter-spacing: .32em; font-weight: 500; }
.icon-btn {
  background: none; border: 0; color: var(--muted); width: 38px; height: 38px;
  display: grid; place-items: center; border-radius: 50%; cursor: pointer;
  transition: color .2s;
}
.icon-btn:active { color: var(--text); }
.icon-btn.spin svg { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.rates { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-s); margin-top: var(--gap-s); }
.rate {
  text-align: left; font: inherit; color: inherit;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: var(--pad-card) 14px; display: flex; flex-direction: column; gap: 2px; cursor: pointer;
  transition: border-color .25s, transform .15s;
}
.rate:active { transform: scale(.98); }
.rate[aria-pressed="true"] { border-color: var(--accent); }
.rate-label { font-size: 10px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }
.rate-value { font-size: clamp(26px, 3.9vh, 34px); font-weight: 300; letter-spacing: -.02em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.rate-unit { font-size: 11px; color: var(--muted); }

.status { margin: var(--gap-s) 2px 0; font-size: 11px; color: var(--muted); min-height: 14px; }
.status.warn { color: var(--warn); }
.status.ok::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--ok); margin-right: 8px; vertical-align: 1px; }

.calc { margin-top: var(--gap-s); display: flex; flex-direction: column; gap: 2px; }
.field label { display: block; font-size: 10px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; margin: 0 2px 4px; }
.input-row {
  display: flex; align-items: baseline; gap: 10px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(6px, 1.2vh, 14px) 14px; transition: border-color .25s;
}
.input-row:focus-within { border-color: var(--accent); }
.sym { font-size: 18px; color: var(--muted); font-weight: 300; min-width: 20px; }
input {
  flex: 1; min-width: 0; background: none; border: 0; outline: 0; color: var(--text);
  font: inherit; font-size: clamp(26px, 4vh, 34px); line-height: 1.2; font-weight: 300; letter-spacing: -.02em;
  font-variant-numeric: tabular-nums; caret-color: var(--accent);
}
input::placeholder { color: #3a3a40; }
.swap {
  align-self: center; background: none; border: 0; color: var(--muted);
  width: 36px; height: 30px; display: grid; place-items: center; cursor: pointer; border-radius: 50%;
}
.swap:active { color: var(--text); }

.foot { margin-top: auto; padding-top: var(--gap-m); text-align: center; font-size: 10px; color: #55555c; }

/* Navegación inferior */
.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 5;
  display: flex; gap: 8px;
  padding: 4px max(16px, calc((100% - 480px) / 2 + 16px)) calc(env(safe-area-inset-bottom) + 4px);
  background: rgba(0,0,0,.86); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
}
.tabs button {
  flex: 1; background: none; border: 0; color: var(--muted); font: inherit; font-size: 10px; letter-spacing: .08em;
  display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 6px 0; cursor: pointer;
  transition: color .2s;
}
.tabs button[aria-current="page"] { color: var(--text); }

/* Historial */
.view[hidden] { display: none; }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; padding: 4px; margin-top: 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.seg button { background: none; border: 0; color: var(--muted); font: inherit; font-size: 13px; letter-spacing: .06em;
  padding: 10px 0; border-radius: 10px; cursor: pointer; transition: background .2s, color .2s; }
.seg button[aria-pressed="true"] { background: #1d1d21; color: var(--text); }
.seg.small { margin-top: 12px; }
.seg.small button { font-size: 12px; padding: 8px 0; }
.hist-read { display: flex; flex-direction: column; gap: 4px; margin-top: 20px; min-height: 66px; }
.hist-val { font-size: 40px; font-weight: 300; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.hist-date { font-size: 12px; color: var(--muted); letter-spacing: .04em; }
.chart { width: 100%; height: auto; display: block; margin-top: 8px; touch-action: pan-y; cursor: crosshair; }
.chart .c-line { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
.chart .c-dot { fill: var(--accent); stroke: var(--bg); stroke-width: 2; }
.chart .c-cross { stroke: #3a3a40; stroke-width: 1; }
.chart .ax { fill: var(--muted); font-size: 9px; font-family: inherit; }
.lookup { margin-top: 20px; }
.date-inp { width: 100%; flex: none; font-size: 17px; font-weight: 400; letter-spacing: 0; padding: 14px 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); color-scheme: dark; }
.date-inp:focus { border-color: var(--accent); }
.found { margin: 10px 2px 0; font-size: 13px; color: var(--muted); min-height: 18px; line-height: 1.5; }
.found b { color: var(--text); font-weight: 500; font-variant-numeric: tabular-nums; }
.found:empty, #hist-status:empty { display: none; }
.hist-list { list-style: none; margin: 12px 0 0; padding: 0; border-top: 1px solid var(--line); }
.hist-list li { display: grid; grid-template-columns: 1fr auto auto; gap: 14px; align-items: center; padding: 14px 2px; border-bottom: 1px solid var(--line); }
.hist-list .d b { display: block; font-weight: 400; font-size: 14px; text-transform: capitalize; }
.hist-list .d small { color: var(--muted); font-size: 11px; }
.hist-list .v { text-align: right; font-size: 14px; font-variant-numeric: tabular-nums; line-height: 1.5; }
.hist-list .v span { display: block; }
.hist-list .v span:last-child { color: var(--muted); }
.hist-list .ch { min-width: 64px; text-align: right; font-size: 12px; font-variant-numeric: tabular-nums; color: var(--muted); }
.hist-list .ch.up { color: var(--ok); }
.hist-list .ch.down { color: #ef6a6a; }
.tag { display: inline-block; margin-left: 8px; padding: 1px 7px; border: 1px solid var(--accent); color: var(--accent);
  border-radius: 99px; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; vertical-align: 2px; }
.more { display: block; width: 100%; margin-top: 16px; padding: 14px; background: none; border: 1px solid var(--line);
  border-radius: var(--radius); color: var(--text); font: inherit; font-size: 14px; cursor: pointer; }
.more:active { background: var(--card); }

/* Alertas push */
.alerts { margin-top: var(--gap-s); }
.alerts-btn { width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px; padding: clamp(8px, 1.3vh, 14px);
  background: none; border: 1px solid var(--line); border-radius: var(--radius); color: var(--text);
  font: inherit; font-size: 14px; cursor: pointer; transition: border-color .25s, background .2s; }
.alerts-btn:active { background: var(--card); }
.alerts-btn[aria-pressed="true"] { border-color: var(--accent); }
.alerts-btn:disabled { color: var(--muted); cursor: default; }
.alerts-note { margin: 6px 2px 0; font-size: 11px; color: var(--muted); line-height: 1.4; min-height: 0; }
.alerts-note:empty { display: none; }

[hidden] { display: none !important; }

/* USDT: valor a la izquierda y la brecha contra el BCV a la derecha, en una sola tarjeta */
.rate-wide { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr auto; column-gap: 14px; row-gap: 2px;
  grid-template-areas: "l g" "v g" "u g"; }
.rate-wide .rate-label { grid-area: l; }
.rate-wide .rate-value { grid-area: v; }
.rate-wide .rate-unit { grid-area: u; }
.rate-gap { grid-area: g; align-self: center; display: flex; flex-direction: column; align-items: flex-end; gap: 1px;
  padding-left: 14px; border-left: 1px solid var(--line); text-align: right; font-variant-numeric: tabular-nums; }
.rate-gap small { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.rate-gap .gap-pct { font-size: clamp(18px, 2.8vh, 24px); font-weight: 300; letter-spacing: -.01em; }
.rate-gap .gap-bs { font-size: 12px; color: var(--muted); }
.brand { -webkit-user-select: none; user-select: none; }

/* Panel de administrador */
.adm-box { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
#adm-panel { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }
#adm-panel[hidden] { display: none; }
.adm-h { margin: 0; font-size: 20px; font-weight: 400; letter-spacing: -.01em; }
.adm-h2 { margin: 28px 0 0; font-size: 11px; font-weight: 400; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; }
.adm-top { display: flex; justify-content: space-between; align-items: center; }
.adm-link { background: none; border: 0; color: var(--muted); font: inherit; font-size: 14px; padding: 10px 0 10px 16px; cursor: pointer; }
.adm-box label, #adm-panel > label { display: flex; justify-content: space-between; font-size: 11px; letter-spacing: .14em; color: var(--muted); text-transform: uppercase; margin-top: 10px; }
.adm-count { letter-spacing: .04em; font-variant-numeric: tabular-nums; }
.adm-inp { width: 100%; flex: none; font: inherit; font-size: 17px; font-weight: 400; letter-spacing: 0; padding: 14px 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); color: var(--text); }
.adm-inp:focus { border-color: var(--accent); }
.adm-area { resize: none; line-height: 1.4; }
.adm-box .adm-check { display: flex; justify-content: flex-start; align-items: center; gap: 10px; text-transform: none; letter-spacing: 0; font-size: 14px; margin-top: 4px; }
.adm-check input { width: 18px; height: 18px; flex: none; accent-color: var(--accent); }
.btn-main { width: 100%; margin-top: 10px; padding: 16px; border: 0; border-radius: var(--radius); background: var(--accent); color: #fff;
  font: inherit; font-size: 16px; cursor: pointer; transition: opacity .2s, background .2s; }
.btn-main:disabled { opacity: .5; cursor: default; }
.btn-main.armed { background: #c9462d; }
.adm-msg { margin: 6px 2px 0; font-size: 13px; color: var(--muted); min-height: 18px; line-height: 1.5; }
.adm-msg.ok { color: var(--ok); }
.adm-msg.err { color: #ef6a6a; }
.adm-prev { display: flex; gap: 12px; align-items: flex-start; margin-top: 10px; padding: 14px; background: #e9e9ed; color: #111;
  border-radius: 18px; }
.adm-prev-ic { flex: none; width: 36px; height: 36px; border-radius: 9px; background: #000 url("icon.svg") center / cover; }
.adm-prev b { display: block; font-size: 14px; font-weight: 600; word-break: break-word; }
.adm-prev p { margin: 2px 0 0; font-size: 14px; line-height: 1.35; word-break: break-word; }
.adm-list { list-style: none; margin: 8px 0 0; padding: 0; border-top: 1px solid var(--line); }
.adm-list li { padding: 14px 2px; border-bottom: 1px solid var(--line); }
.adm-list b { display: block; font-weight: 400; font-size: 14px; word-break: break-word; }
.adm-list span { display: block; font-size: 13px; color: var(--muted); margin-top: 2px; word-break: break-word; }
.adm-list small { display: block; font-size: 11px; color: #66666d; margin-top: 6px; letter-spacing: .04em; }

.foot .enlace-pie { color: inherit; text-decoration: underline; text-underline-offset: 2px; }