/* ApiDuck panel — dark theme, duck-yellow accent */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg: #0e1116;
  --bg-elev: #141922;
  --panel: #171d28;
  --panel-hover: #1d2432;
  --border: #242c3b;
  --border-soft: #1e2531;
  --text: #e9edf5;
  --muted: #8a93a8;
  --accent: #ffc73a;
  --accent-strong: #f5b301;
  --accent-text: #1a1405;
  --success: #47d78a;
  --danger: #ff6b6b;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", Consolas, "Courier New", monospace;
}

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 600px at 80% -10%, #1a2333 0%, var(--bg) 55%) fixed;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
  min-height: 100%;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }

code {
  font-family: var(--mono);
  background: rgba(255, 199, 58, .1);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: .92em;
}

/* ---------------- Login ---------------- */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-elev) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.brand h1 {
  margin: 0;
  font-size: 26px;
  letter-spacing: .2px;
}

.brand-logo { font-size: 30px; line-height: 1; }

.login-card .muted { margin: 0 0 20px; }

/* ---------------- Layout ---------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 12px 24px;
  background: rgba(14, 17, 22, .82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 17px;
  white-space: nowrap;
}

.topbar-brand .brand-logo { font-size: 22px; }

.tabs { display: flex; gap: 6px; flex: 1; }

.tab {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}

.tab:hover { color: var(--text); background: var(--panel-hover); }

.tab.active {
  color: var(--accent-text);
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-strong) 100%);
  border-color: var(--accent-strong);
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------------- Cards ---------------- */

.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-elev) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 18px;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .2px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
  align-items: start;
}

@media (max-width: 980px) {
  .dashboard-grid { grid-template-columns: 1fr; }
}

/* ---------------- Balance ---------------- */

.balance-card {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.balance-label {
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .8px;
  flex-basis: 100%;
}

.balance-value {
  font-size: 38px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  line-height: 1.1;
}

.balance-card #btn-refresh { margin-left: auto; }

/* ---------------- Buttons & inputs ---------------- */

.btn {
  appearance: none;
  font: inherit;
  font-weight: 600;
  color: var(--text);
  background: var(--panel-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .05s;
}

.btn:hover { background: #232c3d; border-color: #2e374a; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-strong) 100%);
  border-color: var(--accent-strong);
  color: var(--accent-text);
}

.btn-primary:hover { filter: brightness(1.05); background: linear-gradient(180deg, var(--accent) 0%, var(--accent-strong) 100%); }

.btn-ghost { background: transparent; }
.btn-block { width: 100%; display: block; }
.btn-sm { padding: 5px 12px; font-size: 13px; }

input[type="password"],
input[type="text"],
select {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: #10151d;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-top: 6px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

input:focus, select:focus {
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 3px rgba(255, 199, 58, .14);
}

label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}

/* ---------------- Alerts & toast ---------------- */

.alert {
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.alert-error {
  background: rgba(255, 107, 107, .1);
  border: 1px solid rgba(255, 107, 107, .35);
  color: #ffb3b3;
}

.alert-success {
  background: rgba(71, 215, 138, .1);
  border: 1px solid rgba(71, 215, 138, .35);
  color: #a8f0c8;
}

.toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: #1f2736;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 20px;
  box-shadow: var(--shadow);
  z-index: 100;
  font-size: 14px;
}

/* ---------------- Table ---------------- */

.table-wrap { overflow-x: auto; }

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.table th {
  text-align: left;
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .6px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-soft);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.table tbody tr:hover { background: rgba(255, 255, 255, .02); }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-ok { background: rgba(71, 215, 138, .14); color: var(--success); }
.badge-err { background: rgba(255, 107, 107, .14); color: var(--danger); }

.empty-hint { padding: 10px 2px; }
.table-wrap.has-rows .empty-hint { display: none; }

/* ---------------- Models ---------------- */

.models-card { position: sticky; top: 84px; }

.models-category { margin-bottom: 16px; }

.models-category h3 {
  margin: 0 0 8px;
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--muted);
}

.model-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 8px;
  border-radius: 7px;
  font-size: 13.5px;
}

.model-row:nth-child(odd) { background: rgba(255, 255, 255, .025); }

.model-id { font-family: var(--mono); font-size: 12.5px; }

.model-coef {
  color: var(--accent);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---------------- Chart ---------------- */

#chart {
  width: 100%;
  display: block;
}

/* ---------------- Instructions ---------------- */

.instructions-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 22px;
}

@media (max-width: 860px) {
  .instructions-layout { grid-template-columns: 1fr; }
}

.cmd-block { margin-bottom: 16px; }

.cmd-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 7px;
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.cmd {
  margin: 0;
  background: #0b0f15;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 13px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  color: #d7e2f5;
}

/* ---------------- Topup ---------------- */

.topup-card { max-width: 560px; }

#transfer-result { margin-top: 18px; }

.result-line {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14px;
}

.result-line span:first-child { color: var(--muted); }

.result-line span:last-child {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}