:root {
  color-scheme: dark;
  --bg: #10151c;
  --card: #1a2230;
  --accent: #4dd0a4;
  --accent-bad: #e07a5f;
  --text: #e8edf2;
  --muted: #8a97a8;
}

* { box-sizing: border-box; }

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

.screen { min-height: 100vh; }
.hidden { display: none !important; }

#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-box {
  background: var(--card);
  padding: 32px;
  border-radius: 12px;
  width: min(90vw, 360px);
  text-align: center;
}
.login-box input {
  width: 100%;
  padding: 10px;
  margin: 12px 0;
  border-radius: 8px;
  border: 1px solid #2c3646;
  background: #0d1218;
  color: var(--text);
}
.login-box button, header button, .period-btn, .offset-buttons button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  background: var(--accent);
  color: #05261c;
  font-weight: 600;
}
.error { color: var(--accent-bad); min-height: 1.2em; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
}
header button { background: #2c3646; color: var(--text); }
.header-right { display: flex; align-items: center; gap: 16px; }
.live-status { color: var(--muted); font-size: 0.85em; }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 24px 16px;
}
.tab {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  background: #2c3646;
  color: var(--text);
  font-weight: 600;
}
.tab.active { background: var(--accent); color: #05261c; }

.page { display: none; }
.page.active { display: block; }

.gauge-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  padding: 0 24px;
}
.gauge-card {
  background: var(--card);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}
.gauge-canvas-wrap { position: relative; height: 110px; }
.gauge-canvas-wrap canvas { width: 100% !important; height: 100% !important; }
.gauge-value {
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.2em;
  font-weight: 700;
}
.gauge-title { margin-top: 8px; color: var(--muted); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  padding: 0 24px;
}
.card {
  background: var(--card);
  border-radius: 12px;
  padding: 16px;
}
.card .label { color: var(--muted); font-size: 0.85em; }
.card .value { font-size: 1.6em; font-weight: 700; margin-top: 4px; }

.schema-block { padding: 8px 24px 24px; }
.schema-block h2 {
  margin: 8px 0 12px;
  font-size: 1em;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pac-schema {
  position: relative;
  width: 100%;
  max-width: 900px;
  aspect-ratio: 1527 / 714;
  margin: 0 auto;
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
}
.pac-schema img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
#pac-overlay { position: absolute; inset: 0; }
.pac-label {
  position: absolute;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  font-size: 0.8em;
  color: #fff;
  background: rgba(13, 18, 24, 0.72);
  padding: 2px 6px;
  border-radius: 6px;
}

.autonomy-block {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px;
  margin: 16px 24px;
  background: var(--card);
  border-radius: 12px;
}
.autonomy-value { text-align: center; }
.autonomy-value span { display: block; font-size: 2.4em; font-weight: 800; color: var(--accent); }
.autonomy-value small { color: var(--muted); }
.autonomy-compare { font-size: 1.1em; }
.autonomy-compare.up { color: var(--accent); }
.autonomy-compare.down { color: var(--accent-bad); }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  padding: 0 24px;
  margin-bottom: 8px;
}
.period-buttons { display: flex; gap: 8px; }
.period-btn { background: #2c3646; color: var(--text); }
.period-btn.active { background: var(--accent); color: #05261c; }
.offset-buttons { display: flex; align-items: center; gap: 8px; color: var(--muted); }
.offset-buttons button { padding: 6px 12px; }
#sheet-select {
  padding: 8px 12px;
  border-radius: 8px;
  background: #2c3646;
  color: var(--text);
  border: none;
}

.chart-wrap {
  padding: 16px 24px 40px;
}
.chart-wrap canvas { max-height: 360px; }
#page-pac .pac-schema { margin-top: 16px; }