:root {
  --bg: #0f1419;
  --card: #1a2332;
  --card2: #243044;
  --text: #e8eef7;
  --muted: #8fa3bf;
  --accent: #3dd68c;
  --accent2: #4da3ff;
  --warn: #ffb020;
  --danger: #ff5c5c;
  --border: #2d3f58;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100%;
}

body {
  padding: 16px;
  padding-bottom: 32px;
}

.container {
  max-width: 520px;
  margin: 0 auto;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.header h1 {
  font-size: 1.25rem;
  margin: 0;
  font-weight: 700;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--card2);
}

.badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
}

.badge.online .dot {
  background: var(--accent);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 14px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stat {
  background: var(--card2);
  border-radius: 12px;
  padding: 14px;
}

.stat .label {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.stat .value {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
}

.stat.wide {
  grid-column: 1 / -1;
}

.form-row {
  margin-bottom: 14px;
}

.form-row label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 8px;
}

input[type="number"],
input[type="time"],
input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--text);
  font-size: 1rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent2);
}

.range-value {
  float: right;
  color: var(--accent2);
  font-weight: 700;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.segmented button {
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--text);
  border-radius: 10px;
  padding: 12px 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
}

.segmented button.active {
  background: var(--accent2);
  border-color: var(--accent2);
  color: #041018;
}

.btn {
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 48px;
}

.btn-primary {
  background: var(--accent);
  color: #042014;
}

.btn-secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  margin-top: 8px;
}

.login-wrap {
  min-height: calc(100vh - 32px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  width: 100%;
  max-width: 400px;
}

.error {
  color: var(--danger);
  font-size: 0.9rem;
  margin-top: 10px;
  min-height: 1.2em;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%) translateY(120%);
  background: var(--card2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: transform 0.25s ease;
  z-index: 20;
  box-shadow: var(--shadow);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.footer-note {
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 8px;
}

@media (min-width: 480px) {
  .segmented.force-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 479px) {
  .segmented.force-4 {
    grid-template-columns: 1fr 1fr;
  }
}