:root {
  --bg: #020617;
  --bg-card: #0b1220;
  --bg-card-soft: #020617;
  --fg: #e5e7eb;
  --fg-muted: #9ca3af;
  --accent: #38bdf8;
  --danger: #ef4444;
  --success: #22c55e;
  --warn: #facc15;
  --border-soft: #1e293b;
  --radius-card: 20px;
  --radius-pill: 999px;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.9);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #020617 0, #020617 40%, #000 100%);
  color: var(--fg);
}

.page {
  max-width: 500px;
  margin: 0 auto;
  padding: 18px 12px 40px;
}

header {
  padding: 4px 4px 16px;
}

h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: 0.02em;
}

.subtitle {
  margin-top: 4px;
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.card {
  background: radial-gradient(circle at top left, #111827 0, #020617 45%, #020617 100%);
  border-radius: var(--radius-card);
  padding: 16px 18px 14px;
  box-shadow: var(--shadow-soft);
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 4px 0;
  font-size: 0.9rem;
}

.label {
  flex: 0 0 40%;
  color: var(--fg-muted);
}

.value {
  flex: 1;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.muted {
  color: var(--fg-muted);
  font-size: 0.8rem;
}

.hidden {
  display: none;
}

hr {
  border: none;
  border-top: 1px solid var(--border-soft);
  margin: 10px 0 12px;
}

/* Buttons */

.buttons {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.btn {
  border: none;
  border-radius: var(--radius-pill);
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  color: #020617;
  min-width: 96px;
  box-shadow: 0 12px 25px rgba(15, 23, 42, 0.9);
  transition: transform 0.08s ease, box-shadow 0.08s ease, filter 0.08s ease;
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.8rem;
  min-width: 72px;
  box-shadow: none;
}

.btn-danger {
  background: var(--danger);
}

.btn-success {
  background: var(--success);
}

.btn-warn {
  background: var(--warn);
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.btn:active {
  transform: translateY(1px);
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.9);
}

/* Stop inputs */

.inp-stop {
  width: 90px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: rgba(15, 23, 42, 0.95);
  color: var(--fg);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
  outline: none;
  margin: 0 2px;
}

.inp-stop:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.5);
}

.dash {
  display: inline-block;
  padding: 0 4px;
  color: var(--fg-muted);
}

/* Footer */

footer {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-align: center;
}

/* Mobile tweaks */

@media (max-width: 480px) {
  .page {
    padding: 16px 10px 32px;
  }

  .card {
    padding-inline: 14px;
  }

  .row {
    font-size: 0.85rem;
  }

  .buttons {
    gap: 8px;
  }

  .btn {
    min-width: 0;
    flex: 1;
    padding-inline: 8px;
  }
}