:root {
  --bg: var(--tg-theme-secondary-bg-color, #0e0f13);
  --card: var(--tg-theme-section-bg-color, var(--tg-theme-bg-color, #181a20));
  --text: var(--tg-theme-text-color, #eceef2);
  --hint: var(--tg-theme-hint-color, #8b909a);
  --accent: var(--tg-theme-button-color, #4c8dff);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --line: color-mix(in srgb, var(--hint) 18%, transparent);
  --up: #1fbf75;
  --down: #f0484f;
  --radius: 14px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.4 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

#app {
  max-width: 520px;
  margin: 0 auto;
  padding: 16px 16px calc(24px + env(safe-area-inset-bottom));
  min-height: 100vh;
}

.screen[hidden] { display: none !important; }
.screen { animation: fade .18s ease-out; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.center {
  min-height: 70vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px; text-align: center;
}

h1 { font-size: 24px; line-height: 1.2; margin: 0; font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--hint); margin: 24px 4px 10px; }
.muted { color: var(--hint); margin: 6px 0 0; }

/* ---------- кнопки ---------- */
.btn {
  appearance: none; border: 0; cursor: pointer;
  width: 100%; height: 50px; border-radius: 12px;
  background: var(--accent); color: var(--accent-text);
  font: inherit; font-weight: 600; font-size: 16px;
  transition: opacity .15s, transform .1s;
}
.btn:active { transform: scale(.98); opacity: .85; }
.btn.ghost { background: var(--card); color: var(--text); }
.btn[disabled] { opacity: .5; }
#btn-retry { width: auto; padding: 0 24px; }

/* ---------- экран блокировки ---------- */
#locked { padding-top: 6vh; }
.lock-icon {
  width: 56px; height: 56px; border-radius: 16px;
  display: grid; place-items: center;
  background: var(--card); color: var(--accent);
  margin-bottom: 18px;
}
.steps { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 2px; border-radius: var(--radius); overflow: hidden; }
.steps li { background: var(--card); padding: 14px 16px; display: flex; align-items: center; gap: 12px; }
.steps span {
  flex: none; width: 24px; height: 24px; border-radius: 50%;
  display: grid; place-items: center; font-size: 13px; font-weight: 600;
  background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent);
}
.actions { display: grid; gap: 10px; }
.note { min-height: 20px; margin: 12px 0 0; text-align: center; font-size: 14px; color: var(--hint); }

/* ---------- список монет ---------- */
.head { margin: 8px 4px 18px; }
.list { border-radius: var(--radius); overflow: hidden; display: grid; gap: 1px; background: var(--line); }
.row {
  appearance: none; border: 0; width: 100%; text-align: left; cursor: pointer;
  background: var(--card); color: var(--text); font: inherit;
  display: grid; grid-template-columns: 40px 1fr auto; align-items: center; gap: 12px;
  padding: 13px 14px;
}
.row:active { background: color-mix(in srgb, var(--card) 85%, var(--hint)); }
.badge {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 12px; font-weight: 700; letter-spacing: .02em;
  background: color-mix(in srgb, var(--hint) 14%, transparent);
}
.row .t { font-weight: 600; }
.row .n { color: var(--hint); font-size: 13px; }
.row .p { text-align: right; font-variant-numeric: tabular-nums; font-weight: 500; }
.row .c { text-align: right; font-size: 13px; font-variant-numeric: tabular-nums; }
.up { color: var(--up); }
.down { color: var(--down); }

/* ---------- экран монеты ---------- */
.coin-head { display: flex; justify-content: space-between; align-items: flex-end; margin: 4px 4px 14px; }
.pair { font-weight: 600; font-size: 14px; color: var(--text); }
.pair span { color: var(--hint); font-weight: 500; }
.price { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; margin-top: 2px; }
.change { font-size: 14px; font-weight: 600; font-variant-numeric: tabular-nums; padding-bottom: 6px; }

.chart-wrap { position: relative; background: var(--card); border-radius: var(--radius); padding: 8px 0 6px 8px; }
#chart { display: block; width: 100%; height: 220px; }
.chart-label { position: absolute; left: 14px; top: 10px; font-size: 11px; color: var(--hint); pointer-events: none; }

.signals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.sig {
  background: var(--card); border-radius: var(--radius);
  padding: 14px 8px 12px; text-align: center;
  transition: background .3s;
}
.sig .h { font-size: 13px; color: var(--hint); }
.sig .arrow { font-size: 34px; line-height: 1.1; font-weight: 600; margin: 6px 0 2px; color: var(--hint); }
.sig .dir { font-size: 14px; font-weight: 600; color: var(--hint); }
.sig.up { background: color-mix(in srgb, var(--up) 13%, var(--card)); }
.sig.down { background: color-mix(in srgb, var(--down) 13%, var(--card)); }
.sig.up .arrow, .sig.up .dir { color: var(--up); }
.sig.down .arrow, .sig.down .dir { color: var(--down); }

.updated { text-align: center; font-size: 13px; color: var(--hint); margin: 12px 0 0; min-height: 18px; }
.disclaimer {
  margin: 22px 4px 0; font-size: 12px; line-height: 1.45; color: var(--hint);
  border-top: 1px solid var(--line); padding-top: 14px;
}

/* ---------- загрузка ---------- */
.spinner {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2.5px solid color-mix(in srgb, var(--hint) 30%, transparent);
  border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }