/* ── CSS 변수 (Blynk 색상 재현) ── */
:root {
  --bg-dark:         #1a1a1a;
  --bg-card:         #2a2a2a;
  --bg-card2:        #333333;
  --header-green:    #4CAF50;
  --tab-active:      #4CAF50;
  --tab-inactive:    #555555;
  --border:          #444444;

  --color-prod-temp: #2196F3;
  --color-co2:       #FF9800;
  --color-rm-temp:   #4CAF50;
  --color-humi:      #FFFFFF;

  --led-on:          #F44336;
  --led-off:         #E0E0E0;

  --btn-heater:      #F44336;
  --btn-fan:         #2196F3;
  --btn-damper:      #4CAF50;

  --text-primary:    #EEEEEE;
  --text-secondary:  #AAAAAA;
  --text-muted:      #777777;
}

/* ── 기본 리셋 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Segoe UI', 'Noto Sans KR', sans-serif;
  font-size: 14px;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── 헤더 ── */
.header {
  background: var(--header-green);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.header-icon { font-size: 18px; }

.header-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
  line-height: 1.25;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
}

.device-info {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 3px;
  flex-shrink: 0;
}

.device-select {
  background: rgba(0,0,0,0.25);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 6px;
  padding: 3px 4px;
  font-size: 12px;
  width: 100%;
  max-width: 140px;
  min-width: 90px;
}

.badge {
  padding: 2px 5px;
  border-radius: 6px;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0;
  flex-shrink: 0;
  white-space: nowrap;
  text-align: center;
}

.badge-online  { background: #1b5e20; color: #a5d6a7; }
.badge-offline { background: #4a1515; color: #ef9a9a; }

/* ── 탭 네비게이션 ── */
.tab-nav {
  display: flex;
  background: #222;
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 54px;
  z-index: 99;
}

.tab-btn {
  flex: 1;
  padding: 12px 4px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s, border-bottom 0.2s;
  border-bottom: 3px solid transparent;
}
.tab-btn.active {
  color: var(--tab-active);
  border-bottom-color: var(--tab-active);
}
.tab-btn:hover:not(.active) { color: var(--text-primary); }

/* ── 탭 컨텐츠 ── */
.tab-content { display: none; padding: 12px; }
.tab-content.active { display: block; }

/* ── 카드 ── */
.card {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* ── 센서 카드 그리드 ── */
.sensor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 5px;
  margin-bottom: 8px;
}

.sensor-card {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 4px 10px;
  text-align: center;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 44px;
}

.sensor-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 1px;
  white-space: nowrap;
}

.sensor-value {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
}

.sensor-unit {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 0;
}

.sensor-card.blue  .sensor-value { color: var(--color-prod-temp); }
.sensor-card.orange .sensor-value { color: var(--color-co2); }
.sensor-card.green .sensor-value { color: var(--color-rm-temp); }
.sensor-card.white .sensor-value { color: var(--color-humi); }

/* LED 그룹 카드 */
.led-group {
  flex-direction: column;
  gap: 6px;
  justify-content: center;
  align-items: center;  /* 카드 안에서 가운데 배치 */
}
/* 각 항목 고정 폭 → dot이 세로로 반듯하게 정렬 */
.led-group .led-item {
  width: 52px;
}
.led-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 릴레이 수동제어 + 작동상태 LED 나란히 배치 */
.relay-led-wrapper {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  align-items: stretch;
  margin-bottom: 12px;
}
/* relay-led-wrapper 안의 .card는 자체 margin-bottom 제거 (wrapper가 담당) */
.relay-led-wrapper > .card {
  margin-bottom: 0;
  flex: 1;
  min-width: 0;
}
.relay-led-wrapper > .card:first-child { flex: 5; }
.relay-led-wrapper > .card:last-child  { flex: 3; }

/* 제어관리 탭 — 독립 LED 상태 섹션 */
.led-status-card {
  padding: 10px 10px;
  display: flex;
  flex-direction: column;
}
.led-status-row {
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  flex: 1;
  gap: 0;
  margin-top: 4px;
}
.led-status-row .led-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
}
.led-status-row .led-label {
  font-size: 12px;
}
.led-label {
  font-size: 12px;
  color: var(--text-secondary);
}

/* LED 점 */
.led-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--led-off);
  transition: background 0.3s;
  flex-shrink: 0;
}
/* 히터(빨강) */
#led-heater.on, #led2-heater.on {
  background: var(--btn-heater);
}
/* 팬(파랑) */
#led-fan.on, #led2-fan.on {
  background: var(--btn-fan);
}
/* 댐퍼(초록) */
#led-damper.on, #led2-damper.on {
  background: var(--btn-damper);
}
.led-dot.sm {
  width: 12px;
  height: 12px;
}

/* ── 차트 컨트롤 ── */
.chart-controls {
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}
/* 2. 확장 아이콘: 항상 우측에 표시 */
#btn-chart-fullscreen {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
#btn-chart-fullscreen:hover { border-color: var(--tab-active); background: var(--bg-card2); }
.time-range-btns {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: 2px;
}
.range-btn {
  padding: 5px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}
.range-btn.active {
  background: var(--tab-active);
  border-color: var(--tab-active);
  color: #fff;
}
.range-btn:hover:not(.active) {
  border-color: var(--tab-active);
  color: var(--text-primary);
}

/* ── 커스텀 차트 범례 ── */
.chart-legend {
  display: flex;
  gap: 10px;
  padding: 1px 8px 1px;
  flex-wrap: wrap;
}
.cl-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: #aaa;
}
.cl-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── 차트 ── */
.chart-container {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 8px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  min-height: 260px;
}
#super-chart { width: 100%; }

/* ── 차트 전체화면 오버레이 ── */
#chart-fs-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #111;
  flex-direction: column;
}
#chart-fs-overlay.active { display: flex; }

/* 모바일 전용(≤600px): 90도 회전 → 가로 모드 */
@media (max-width: 600px) {
  #chart-fs-overlay.active {
    inset: unset;
    top: 50%;
    left: 50%;
    width: 100vh;
    height: 100vw;
    transform: translate(-50%, -50%) rotate(90deg);
  }
}
.chart-fs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  border-bottom: 1px solid #333;
  flex-shrink: 0;
}
.fs-range-wrap {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  flex: 1;
}
.fs-range-btn {
  padding: 4px 10px;
  background: var(--bg-card);
  border: 1px solid #444;
  border-radius: 4px;
  color: #aaa;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}
.fs-range-btn.active {
  background: var(--tab-active);
  border-color: var(--tab-active);
  color: #fff;
}
.fs-range-btn:hover:not(.active) {
  border-color: var(--tab-active);
  color: var(--text-primary);
}
#chart-fs-close {
  background: #333;
  border: 1px solid #555;
  color: #ccc;
  padding: 4px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}
#chart-fs-close:hover { background: #444; color: #fff; }
#chart-fs-body {
  flex: 1;
  min-height: 0;
  padding: 8px;
  width: 100%;
}

/* ── 배치 정보 ── */
.batch-info {}
.batch-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.batch-row:last-child { margin-bottom: 0; }
.batch-row label {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 64px;
}
.datetime-input {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 12px;
  flex: 1;
  min-width: 0;
}
.btn-small {
  background: var(--header-green);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
}
.btn-small:hover { background: #43a047; }

.elapsed-text {
  color: var(--tab-active);
  font-size: 13px;
  font-weight: 600;
}

/* ── 제어탭 ── */
.control-lock-card {}

.select-full {
  width: 100%;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
  margin-top: 6px;
}

/* 릴레이 그리드 */
.relay-grid {
  display: flex;
  gap: 8px;
  justify-content: space-around;
}
.relay-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.relay-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-card2);
  border: 3px solid var(--border);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: all 0.2s;
  font-size: 13px;
}
.relay-btn:active { transform: scale(0.95); }

.relay-btn.heater-btn { border-color: var(--btn-heater); }
.relay-btn.fan-btn    { border-color: var(--btn-fan); }
.relay-btn.damper-btn { border-color: var(--btn-damper); }

.relay-btn.heater-btn.active {
  background: var(--btn-heater);
  border-color: var(--btn-heater);
  color: #fff;
}
.relay-btn.fan-btn.active {
  background: var(--btn-fan);
  border-color: var(--btn-fan);
  color: #fff;
}
.relay-btn.damper-btn.active {
  background: var(--btn-damper);
  border-color: var(--btn-damper);
  color: #fff;
}
.relay-btn.active .relay-btn-state { color: rgba(255,255,255,0.85); }

.relay-btn-label { font-size: 13px; font-weight: 700; }
.relay-btn-state { font-size: 11px; color: var(--text-muted); }

/* 스테퍼 */
.setpoint-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.setpoint-row {
  display: flex;
  align-items: center;
  gap: 0;
}
/* 측정값·설정값 컬럼 */
.sp-col {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
  padding: 0 8px;
  border-right: 1px solid var(--border);
}
.sp-col:first-child { padding-left: 0; }
.sp-label  { font-size: 11px; color: var(--text-secondary); }
.sp-meas   { font-size: 15px; font-weight: 600; color: var(--color-rm-temp); }
.sp-set    { font-size: 15px; font-weight: 600; color: var(--color-co2); }

.stepper {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px 10px;
  margin-left: auto;
  padding-left: 12px;
}
.stepper.inline { margin-left: 0; }

/* 스테퍼 제목 (목표실온조정 등) — 단독 한 줄 */
.stepper-title {
  flex: 0 0 100%;
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
}

/* 1. 스테퍼 버튼: 터치 타겟 확대 */
.stepper-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.stepper-btn:hover { background: #444; }
.stepper-btn:active { background: var(--header-green); }

.stepper-val {
  font-size: 18px;
  font-weight: 700;
  min-width: 32px;
  text-align: center;
  color: var(--color-co2);
  cursor: pointer;
  border-bottom: 1px dashed var(--color-co2);
  padding-bottom: 1px;
}
.stepper-val:hover { opacity: 0.75; }
/* 직접 입력 모드 */
.stepper-input {
  width: 52px;
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  background: var(--bg-card2);
  border: 1px solid var(--header-green);
  border-radius: 6px;
  color: var(--color-co2);
  padding: 2px 4px;
  outline: none;
}
.stepper-unit { font-size: 12px; color: var(--text-muted); }

/* 팬 설정 */
.fan-settings { display: flex; flex-direction: column; gap: 10px; }
.fan-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.fan-label { font-size: 12px; color: var(--text-secondary); min-width: 160px; }

/* 팬(히터연동) — 행1: 제목 + 드롭다운 */
.fan-header-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.fan-header-label {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.select-sm {
  flex: 1;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  outline: none;
}

/* 팬(히터연동) — 행2: 시간 설정 2열 */
.fan-timing-row {
  display: flex;
  gap: 12px;
}
.fan-timing-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.fan-timing-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-align: center;
}

/* ── 이력확인 탭 ── */
.history-filter {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.filter-row label {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 32px;
}
.filter-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}
.retention-note {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 4px;
}
.btn-primary {
  background: var(--header-green);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary:hover { background: #43a047; }
.btn-secondary {
  background: var(--bg-card2);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
}
.btn-secondary:hover { background: #444; }

/* 히스토리 테이블 */
.table-wrapper { overflow-x: auto; }
.hist-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.hist-table th, .hist-table td {
  padding: 6px 8px;
  text-align: right;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.hist-table th {
  background: var(--bg-card2);
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  position: sticky;
  top: 0;
}
.hist-table td:first-child { text-align: left; }
.hist-table tr:hover td { background: rgba(255,255,255,0.04); }
.no-data { text-align: center !important; color: var(--text-muted); padding: 24px !important; }
.hist-count {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
}

/* ── 반응형 ── */
@media (max-width: 480px) {
  .sensor-grid {
    grid-template-columns: 1fr 1fr;
  }
  .sensor-value { font-size: 22px; }
  /* 4. 릴레이: 모바일에서도 좌우 유지, 버튼 크기 유지 */
  .relay-led-wrapper { align-items: stretch; }
  .relay-grid { justify-content: space-evenly; gap: 6px; }
  .relay-btn { width: 58px; height: 58px; font-size: 12px; }
  .sp-col { padding: 0 6px; }
  .sp-meas, .sp-set { font-size: 14px; }
  /* 1. 스테퍼 버튼 모바일 크기 */
  .stepper-btn { width: 34px; height: 34px; font-size: 18px; }
  .fan-label { min-width: 130px; font-size: 11px; }
}

@media (max-width: 360px) {
  .header-title { font-size: 15px; }
  .tab-btn { font-size: 12px; padding: 10px 2px; }
  .range-btn { padding: 4px 7px; font-size: 11px; }
}

/* ── ApexCharts 다크 오버라이드 ── */
/* 툴바 항상 표시 (모바일 hover 없이도 +/- 버튼 노출) */
.apexcharts-toolbar {
  opacity: 1 !important;
}

.apexcharts-tooltip {
  background: var(--bg-card2) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-primary) !important;
}
.apexcharts-tooltip-title {
  background: var(--bg-dark) !important;
  border-bottom: 1px solid var(--border) !important;
}
.apexcharts-xaxistooltip {
  background: var(--bg-card2) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-primary) !important;
}