:root {
  color-scheme: dark;
  --bg: #0f172a;
  --panel: #182235;
  --panel-soft: #22304a;
  --text: #f8fafc;
  --muted: #a7b3c7;
  --line: #334155;
  --accent: #38bdf8;
  --good: #34d399;
  --warn: #fbbf24;
  --danger: #fb7185;
}

* {
  box-sizing: border-box;
}

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

button,
input,
select {
  font: inherit;
}

.app-shell {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 20px;
  padding-bottom: calc(32px + env(safe-area-inset-bottom));
}

.topbar,
.status-strip,
.button-row,
.device-grid,
.schedule-form {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar {
  justify-content: space-between;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 2.1rem;
}

h2 {
  font-size: 1.05rem;
  margin-bottom: 14px;
}

.panel,
.notice,
.status-strip {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 14px;
}

.notice.danger {
  border-color: var(--danger);
  color: #ffe4e6;
}

.form,
.compact {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

input,
select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0b1220;
  color: var(--text);
  padding: 0 12px;
}

button {
  min-height: 46px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #00111d;
  font-weight: 800;
  padding: 0 14px;
  cursor: pointer;
}

button.secondary,
.icon-button {
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--line);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.status-strip {
  justify-content: space-between;
}

.status-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 8px;
  background: var(--muted);
}

.status-dot.online {
  background: var(--good);
}

.status-dot.offline {
  background: var(--danger);
}

.actions-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.actions-grid button {
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--line);
}

.actions-grid .danger-action {
  grid-column: 1 / -1;
  min-height: 62px;
  background: var(--danger);
  color: #2a0208;
  font-size: 1.1rem;
}

.device-grid {
  align-items: end;
}

.device-grid label {
  flex: 1;
}

.schedule-form label {
  flex: 1;
}

.code-box {
  overflow-wrap: anywhere;
  margin-top: 12px;
  padding: 12px;
  border-radius: 8px;
  background: #0b1220;
  border: 1px solid var(--line);
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.9rem;
}

.list {
  display: grid;
  gap: 8px;
}

.list-item {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0b1220;
}

.list-item small {
  color: var(--muted);
}

.toast {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: calc(18px + env(safe-area-inset-bottom));
  max-width: 680px;
  margin: 0 auto;
  padding: 12px 14px;
  border-radius: 8px;
  background: #e0f2fe;
  color: #082f49;
  font-weight: 700;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

.hidden {
  display: none !important;
}

@media (max-width: 520px) {
  .app-shell {
    padding: 16px;
  }

  .button-row,
  .device-grid,
  .schedule-form {
    align-items: stretch;
    flex-direction: column;
  }

  .actions-grid {
    grid-template-columns: 1fr;
  }
}