:root {
  --bg: var(--tg-theme-bg-color, #fff);
  --text: var(--tg-theme-text-color, #000);
  --hint: var(--tg-theme-hint-color, #999);
  --link: var(--tg-theme-link-color, #2678b6);
  --btn: var(--tg-theme-button-color, #3390ec);
  --btn-text: var(--tg-theme-button-text-color, #fff);
  --sec-bg: var(--tg-theme-secondary-bg-color, #f4f4f5);
  --ok: #4caf50;
  --warn: #ff9800;
  --err: #f44336;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, sans-serif;
  padding-bottom: 120px; /* room for MainButton */
}

.card {
  background: var(--sec-bg);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

.amount-hero {
  text-align: center;
  padding: 28px 12px 16px;
}
.amount-hero .big {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.amount-hero .sub {
  color: var(--hint);
  margin-top: 6px;
}

h2 {
  font-size: 15px;
  font-weight: 600;
  margin: 18px 0 10px;
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.net-option {
  display: flex;
  align-items: center;
  padding: 14px;
  background: var(--sec-bg);
  border-radius: var(--radius);
  margin-bottom: 8px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 120ms, transform 120ms;
  user-select: none;
}
.net-option:active { transform: scale(0.98); }
.net-option.selected { border-color: var(--btn); }
.net-option .label { flex: 1; font-weight: 500; }
.net-option .fee { color: var(--hint); font-size: 13px; margin-right: 8px; }
.net-option .tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}
.tier-badge.cheap          { background: rgba(76,175,80,0.15);  color: var(--ok); }
.tier-badge.mid            { background: rgba(255,152,0,0.15);  color: var(--warn); }
.tier-badge.expensive      { background: rgba(244,67,54,0.15);  color: var(--err); }
.tier-badge.very_expensive { background: rgba(244,67,54,0.25);  color: var(--err); }
.tier-badge.unknown        { background: rgba(120,120,120,0.15);color: var(--hint); }

.star {
  color: var(--btn);
  margin-right: 8px;
}

.field-label {
  font-size: 13px;
  color: var(--hint);
  margin-bottom: 6px;
  display: block;
}

.input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}
.input-row input {
  flex: 1;
  padding: 13px 14px;
  font: inherit;
  background: var(--sec-bg);
  border: 2px solid transparent;
  border-radius: var(--radius);
  color: var(--text);
  outline: none;
  transition: border-color 120ms;
}
.input-row input:focus { border-color: var(--btn); }
.input-row input.valid { border-color: var(--ok); }
.input-row input.invalid { border-color: var(--err); }
.icon-btn {
  width: 48px;
  background: var(--sec-bg);
  border: none;
  border-radius: var(--radius);
  font-size: 20px;
  cursor: pointer;
}

.receive-line {
  padding: 12px 14px;
  background: var(--sec-bg);
  border-radius: var(--radius);
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.receive-line strong { font-size: 16px; }

.saved-addr {
  display: flex;
  flex-direction: column;
  padding: 12px 14px;
  background: var(--sec-bg);
  border-radius: var(--radius);
  margin-bottom: 8px;
  cursor: pointer;
}
.saved-addr:active { opacity: 0.7; }
.saved-addr .addr-label { font-weight: 500; }
.saved-addr .addr-value { color: var(--hint); font-size: 12px; margin-top: 2px; font-family: "SF Mono", Menlo, monospace; }

.state-msg {
  text-align: center;
  padding: 40px 16px;
  color: var(--hint);
}

.row {
  display: flex;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--sec-bg);
  border-radius: var(--radius);
  margin-bottom: 6px;
}
.row .k { color: var(--hint); }
.row .v { font-weight: 500; }

.pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
}
.pill.ok { background: rgba(76,175,80,0.15); color: var(--ok); }
.pill.pending { background: rgba(255,152,0,0.15); color: var(--warn); }
.pill.fail { background: rgba(244,67,54,0.15); color: var(--err); }

.hist-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--sec-bg);
  border-radius: var(--radius);
  margin-bottom: 6px;
}
.hist-row .amt { font-weight: 600; }
.hist-row .meta { color: var(--hint); font-size: 12px; margin-top: 2px; }

.error-box {
  background: rgba(244,67,54,0.1);
  color: var(--err);
  padding: 12px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-size: 14px;
}

.success-hero {
  text-align: center;
  padding: 40px 16px;
}
.success-hero .icon { font-size: 60px; }
.success-hero .msg { margin-top: 16px; font-size: 18px; font-weight: 600; }
.success-hero .sub { color: var(--hint); margin-top: 6px; }