:root {
  color-scheme: dark;
  --bg: #0f1115;
  --card: #181b22;
  --field: #22262f;
  --text: #f2f3f5;
  --hint: #8b919e;
  --accent: #f7931a;      /* bitcoin orange */
  --accent-text: #111111;
  --link: #6ab0ff;
  --danger: #ff6b6b;
  --ok: #4cd964;
  --border: #2a2f3a;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px 16px calc(24px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.header h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.status {
  color: var(--hint);
  font-size: 13px;
  margin-top: 2px;
}

.status--error { color: var(--danger); }
.status--ok { color: var(--ok); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card__title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.direction {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding-bottom: 4px;
}

.direction__arrow { color: var(--hint); font-size: 20px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--field);
  font-weight: 700;
  letter-spacing: .02em;
}

.chip__flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #3a4150;
  font-size: 14px;
}

.chip--btc .chip__flag { background: var(--accent); color: var(--accent-text); }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field__label {
  font-size: 13px;
  color: var(--hint);
}

.field__row {
  display: flex;
  align-items: stretch;
  background: var(--field);
  border: 1px solid transparent;
  border-radius: 12px;
  overflow: hidden;
}

.field__row:focus-within { border-color: var(--accent); }

.field__row input {
  border: none;
  background: transparent;
  border-radius: 0;
}

.field__row input:focus { border: none; }

.unit {
  display: flex;
  align-items: center;
  padding: 0 14px;
  font-weight: 700;
  color: var(--hint);
  border-left: 1px solid var(--border);
}

.unit--btc { color: var(--accent); }

input {
  width: 100%;
  min-width: 0;
  border: 1px solid transparent;
  background: var(--field);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 18px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input::placeholder { color: #5c6270; }
input:focus { border-color: var(--accent); }
input#wallet { font-size: 15px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.presets button {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  padding: 8px 0;
  font-size: 13px;
  cursor: pointer;
}

.presets button:active { background: var(--field); }

.rate {
  font-size: 14px;
  color: var(--text);
  text-align: center;
}

.fee {
  font-size: 13px;
  color: var(--hint);
  text-align: center;
  min-height: 1em;
}

.primary {
  border: none;
  border-radius: 12px;
  padding: 14px;
  font-size: 17px;
  font-weight: 700;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

.primary:disabled { opacity: .4; cursor: default; }

.link {
  border: none;
  background: none;
  color: var(--link);
  font-size: 14px;
  cursor: pointer;
  padding: 0;
}

.history {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  padding: 10px 12px;
  background: var(--field);
  border-radius: 12px;
  font-size: 14px;
}

.history .id { color: var(--hint); font-size: 12px; }
.history .amounts { font-weight: 600; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: #2a2f3a;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 14px;
  max-width: 90vw;
  z-index: 10;
}

/* ---------- шаг 2: оплата ---------- */

.view { display: flex; flex-direction: column; gap: 12px; }

.pay__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--hint);
  font-size: 14px;
}

.pay__head b { color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.timer {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--text);
  background: var(--field);
  padding: 4px 10px;
  border-radius: 999px;
}

.timer--warn { color: var(--danger); }

.pay__amount { display: flex; flex-direction: column; gap: 4px; }

.pay__big {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.req {
  display: flex;
  flex-direction: column;
  background: var(--field);
  border-radius: 12px;
  overflow: hidden;
}

.req__row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 4px 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.req__row:last-child { border-bottom: none; }

.req__label { grid-column: 1 / -1; font-size: 12px; color: var(--hint); }
.req__value { font-weight: 600; word-break: break-all; }

.req__number {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(15px, 4.4vw, 18px);
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.req__comment { padding: 10px 14px; font-size: 13px; color: var(--hint); border-top: 1px solid var(--border); }

.copy {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--accent);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.copy:active { background: var(--card); }

.note { margin: 0; font-size: 13px; color: var(--hint); line-height: 1.45; }
.note b { color: var(--text); }

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  word-break: break-all;
  color: var(--text);
}

.link--danger { color: var(--danger); }

/* ---------- шаг 3: статус ---------- */

.card--center { align-items: center; text-align: center; padding: 28px 16px; }

.status-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 30px;
  background: var(--field);
}

.status-icon--ok { background: rgba(76, 217, 100, .15); color: var(--ok); }
.status-icon--wait { background: rgba(247, 147, 26, .15); color: var(--accent); }
.status-icon--bad { background: rgba(255, 107, 107, .15); color: var(--danger); }

.status-title { margin: 0; font-size: 20px; text-wrap: balance; }

.card--center .primary { align-self: stretch; margin-top: 8px; }

/* ---------- статусы в истории ---------- */

.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--field);
  color: var(--hint);
  white-space: nowrap;
}

.pill--awaiting_payment { color: var(--accent); background: rgba(247, 147, 26, .15); }
.pill--paid { color: #6ab0ff; background: rgba(106, 176, 255, .15); }
.pill--completed { color: var(--ok); background: rgba(76, 217, 100, .15); }
.pill--cancelled, .pill--expired { color: var(--danger); background: rgba(255, 107, 107, .12); }

.history li { cursor: pointer; }
.history li:active { opacity: .7; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* Атрибут hidden должен побеждать display:flex у контейнеров экранов */
.view[hidden], .tabpane[hidden], [hidden] { display: none !important; }

/* ---------- уведомления и вторичные элементы ---------- */

.notice {
  background: rgba(247, 147, 26, .12);
  border: 1px solid rgba(247, 147, 26, .4);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 14px;
}

.notice--error { background: rgba(255, 107, 107, .12); border-color: rgba(255, 107, 107, .4); }

.secondary {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  font-size: 16px;
  font-weight: 600;
  background: var(--field);
  color: var(--text);
  cursor: pointer;
}

.card--center .secondary { align-self: stretch; }

textarea {
  width: 100%;
  border: 1px solid transparent;
  background: var(--field);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 16px;
  font-family: inherit;
  outline: none;
  resize: vertical;
}

textarea:focus { border-color: var(--accent); }

.choices { display: flex; flex-direction: column; gap: 6px; }

.choice {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--field);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 15px;
}

.choice input { width: auto; accent-color: var(--accent); margin: 0; }
.choice--on { border-color: var(--accent); }

/* чек */
.receipt { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13px; color: var(--hint); }
.receipt--center { justify-content: center; }
.receipt__ok { color: var(--ok); font-weight: 600; }
.receipt .secondary { padding: 8px 12px; font-size: 14px; }

.appeal-box {
  align-self: stretch;
  background: var(--field);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 13px;
  text-align: left;
  color: var(--hint);
}

.appeal-box b { color: var(--text); }

.pill--appeal { color: #d2a8ff; background: rgba(210, 168, 255, .15); }

.note a.mono { color: var(--link); text-decoration: none; }

.pill--confirmed { color: #ffd166; background: rgba(255, 209, 102, .15); }
.pill--sending { color: #6ab0ff; background: rgba(106, 176, 255, .15); }
.pill--payout_failed { color: var(--danger); background: rgba(255, 107, 107, .12); }

/* У чекбоксов и радиокнопок оставляем родной вид, иначе не видно состояние */
input[type="checkbox"], input[type="radio"] {
  -webkit-appearance: auto;
  appearance: auto;
  width: 20px;
  height: 20px;
  padding: 0;
  border: none;
  background: none;
  accent-color: var(--accent);
  cursor: pointer;
}