:root {
  --bg-grad-1: #1a1d2a;
  --bg-grad-2: #2a2d3f;
  --card: #ffffff;
  --card-soft: #f7f8fb;
  --ink: #1c2030;
  --ink-soft: #5b6178;
  --line: #e6e9ef;
  --primary: #6c5ce7;
  --primary-soft: #e8e3ff;
  --primary-dark: #4834d4;
  --accent: #8b80f9;
  --warn: #ff7849;
  --asleep: #6c5ce7;
  --awake: #00b894;
  --unknown: #b2bec3;
  --shadow: 0 4px 16px rgba(20, 30, 60, 0.18);
  --shadow-soft: 0 2px 8px rgba(20, 30, 60, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Apple SD Gothic Neo", "Pretendard", sans-serif;
  background: linear-gradient(160deg, var(--bg-grad-1) 0%, var(--bg-grad-2) 100%);
  background-attachment: fixed;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.app {
  max-width: 1020px;
  margin: 0 auto;
  padding: 26px 18px 60px;
}

/* 상단 */
.topbar {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
  gap: 14px; margin-bottom: 18px;
}
.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.logo {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, #6c5ce7 0%, #8b80f9 100%);
  border-radius: 14px;
  display: grid; place-items: center;
  font-size: 24px;
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.4);
}
.brand h1 { margin: 0; font-size: 22px; font-weight: 700; }
.subtitle { margin: 2px 0 0; color: rgba(255, 255, 255, 0.65); font-size: 13px; }

.hud {
  display: flex; gap: 0;
  background: rgba(255, 255, 255, 0.95);
  padding: 8px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}
.hud-cell {
  display: flex; flex-direction: column; align-items: center;
  padding: 4px 18px;
  border-right: 1px solid var(--line);
  min-width: 90px;
}
.hud-cell:last-child { border-right: none; }
.hud-cell b {
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.hud-cell small { font-size: 11px; color: var(--ink-soft); margin-top: 2px; }
#hudLabel.asleep { color: var(--asleep); }
#hudLabel.awake  { color: var(--awake); }
#hudLabel.unknown { color: var(--unknown); }

/* 카드 공통 */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.card h2 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  display: flex; align-items: center; gap: 10px;
}
.card h2 small.muted {
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--card-soft);
  padding: 3px 8px;
  border-radius: 10px;
}
.hint {
  color: var(--ink-soft);
  font-size: 13px;
  margin: 0 0 12px;
  line-height: 1.5;
}

/* 시나리오 탭 */
.scenario-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.scenario-btn {
  border: 1px solid var(--line);
  background: var(--card-soft);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  color: var(--ink-soft);
  font-weight: 500;
  transition: all 0.15s;
}
.scenario-btn:hover { background: var(--primary-soft); color: var(--primary-dark); }
.scenario-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}
.scenario-desc {
  margin: 12px 0 0;
  padding: 10px 12px;
  background: var(--card-soft);
  border-radius: 8px;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.55;
  border-left: 3px solid var(--primary);
}

/* 컨트롤 */
.control-row {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  margin-bottom: 14px;
}
.play-controls { display: flex; gap: 6px; }
.speed-controls { display: flex; align-items: center; gap: 6px; }
.speed-label { font-size: 12px; color: var(--ink-soft); margin-right: 4px; }
.speed-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}
.speed-btn:hover { background: var(--card-soft); }
.speed-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.progress-track {
  position: relative;
  height: 8px;
  background: var(--card-soft);
  border-radius: 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  transition: width 0.15s linear;
}
.progress-text {
  position: absolute;
  right: 8px; top: -20px;
  font-size: 11px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

/* 차트 */
.chart-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  flex-wrap: wrap; gap: 10px;
  margin-bottom: 10px;
}
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 11px;
  color: var(--ink-soft);
}
.lg-item { display: inline-flex; align-items: center; gap: 5px; }
.sw {
  display: inline-block;
  width: 18px; height: 3px;
  border-radius: 2px;
}
.sw-score { background: linear-gradient(90deg, var(--primary), var(--accent)); height: 4px; }
.sw-asleep { background: #ff7849; }
.sw-awake { background: #00b894; }

#chart {
  width: 100%;
  height: 280px;
  display: block;
  background: var(--card-soft);
  border-radius: 10px;
}

.component-bars {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cbar {
  display: grid;
  grid-template-columns: 70px 1fr 50px;
  align-items: center;
  gap: 10px;
}
.cbar-label {
  font-size: 12px;
  color: var(--ink-soft);
  font-weight: 600;
}
.cbar-track {
  height: 8px;
  background: var(--card-soft);
  border-radius: 4px;
  overflow: hidden;
}
.cbar-fill {
  height: 100%;
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 4px;
}
.cbar-fill.motion { background: linear-gradient(90deg, #6c5ce7, #8b80f9); }
.cbar-fill.darkness { background: linear-gradient(90deg, #2d3436, #636e72); }
.cbar-fill.night { background: linear-gradient(90deg, #0984e3, #74b9ff); }
.cbar-val {
  font-size: 12px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  text-align: right;
  font-weight: 600;
}

/* 상태 카드 */
.state-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}
.state-cell {
  background: var(--card-soft);
  border-radius: 10px;
  padding: 10px 8px;
  text-align: center;
}
.state-cell small {
  display: block;
  font-size: 10px;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.state-cell b {
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}
.label-tag {
  padding: 2px 10px;
  border-radius: 10px;
  background: var(--unknown);
  color: #fff;
  font-size: 12px !important;
  display: inline-block;
}
.label-tag.asleep { background: var(--asleep); }
.label-tag.awake { background: var(--awake); }
.label-tag.unknown { background: var(--unknown); }

/* 액션 로그 */
.action-log {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 320px;
  overflow-y: auto;
}
.empty-log {
  color: var(--ink-soft);
  font-size: 13px;
  text-align: center;
  padding: 16px;
  margin: 0;
}
.action-item {
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--card-soft);
  border-left: 3px solid var(--primary);
  font-size: 13px;
  animation: slidein 0.25s ease;
}
@keyframes slidein {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: none; }
}
.action-item.pending {
  background: #fff7ea;
  border-left-color: var(--warn);
}
.action-item.executed {
  background: #e8f5f0;
  border-left-color: var(--awake);
}
.action-item.cancelled {
  background: var(--card-soft);
  border-left-color: var(--unknown);
  opacity: 0.7;
}
.action-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 4px;
}
.action-kind {
  font-weight: 700;
  font-size: 13px;
}
.action-stage {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.06);
  color: var(--ink-soft);
  font-weight: 600;
}
.action-stage.pending { background: var(--warn); color: #fff; }
.action-stage.executed { background: var(--awake); color: #fff; }
.action-stage.cancelled { background: var(--unknown); color: #fff; }
.action-msg {
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 4px 0 0;
}
.action-ts {
  font-size: 10px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}
.action-cancel-btn {
  margin-top: 8px;
  background: transparent;
  border: 1px solid var(--warn);
  color: var(--warn);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  font-weight: 600;
}
.action-cancel-btn:hover { background: var(--warn); color: #fff; }
.action-countdown {
  font-size: 11px;
  color: var(--warn);
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* 안내 카드 */
.info-card {
  background: rgba(255, 255, 255, 0.96);
}
.info-list {
  margin: 0;
  padding-left: 4px;
  list-style: none;
}
.info-list li {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
}
.info-list li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: var(--primary);
  font-weight: 700;
}
.info-list li b { color: var(--ink); }
.info-list code {
  background: var(--card-soft);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
}

/* 버튼 */
.btn-primary, .btn-ghost {
  border: none;
  border-radius: 10px;
  padding: 9px 16px;
  font-size: 13px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3);
}
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }
.btn-primary:disabled { background: var(--unknown); cursor: not-allowed; box-shadow: none; opacity: 0.6; }
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--line);
}
.btn-ghost:hover:not(:disabled) { background: var(--card-soft); color: var(--ink); }
.btn-ghost:disabled { opacity: 0.5; cursor: not-allowed; }

.foot {
  text-align: center;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
  line-height: 1.6;
}

@media (max-width: 700px) {
  .app { padding: 18px 12px 40px; }
  .topbar { flex-direction: column; align-items: stretch; }
  .hud { width: 100%; justify-content: space-around; }
  .hud-cell { padding: 4px 12px; min-width: 0; flex: 1; }
  .state-grid { grid-template-columns: repeat(2, 1fr); }
  .control-row { flex-direction: column; align-items: stretch; }
  .speed-controls { justify-content: space-between; }
  .play-controls { justify-content: space-between; }
  .play-controls button { flex: 1; }
  #chart { height: 220px; }
  .legend { font-size: 10px; gap: 8px; }
}