/* ==========================================================================
   MQTT 感測器溫度計儀表板 - 高級現代玻璃擬態風格 (Modern Glassmorphism Design)
   ========================================================================== */

:root {
  /* 主色調調配 (HSL Tailored Colors) */
  --bg-primary: #0a0e17;
  --bg-secondary: #101726;
  --card-bg: rgba(18, 25, 41, 0.72);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-border-glow: rgba(56, 189, 248, 0.25);
  --card-hover-border: rgba(56, 189, 248, 0.45);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* 溫度色彩 (動態階層) */
  --temp-cold: #38bdf8;         /* 冰藍 <20°C */
  --temp-normal: #34d399;       /* 翠綠 20~27°C */
  --temp-warm: #fbbf24;         /* 琥珀 28~32.9°C */
  --temp-alarm: #f43f5e;        /* 烈焰紅 >=33°C */

  --liquid-gradient: linear-gradient(180deg, #38bdf8 0%, #0284c7 100%);
  --bulb-glow: rgba(56, 189, 248, 0.45);

  /* 輔助標誌色 */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* 玻璃質感 */
  --glass-reflection: linear-gradient(90deg, rgba(255,255,255,0.45) 0%, rgba(255,255,255,0.05) 30%, rgba(255,255,255,0) 70%, rgba(255,255,255,0.2) 100%);

  /* 字型定義 */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* 圓角與陰影 */
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 16px 40px -10px rgba(0, 0, 0, 0.55), 0 0 1px 1px rgba(255, 255, 255, 0.05);
}

/* 全域重置與基礎樣式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* 背景光暈環境光 */
.background-decorations {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.22;
  transition: all 1.2s ease;
}

.glow-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #0284c7 0%, transparent 70%);
  top: -120px;
  left: 10%;
  animation: floatGlow 18s ease-in-out infinite alternate;
}

.glow-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #6366f1 0%, transparent 70%);
  bottom: -150px;
  right: 5%;
  animation: floatGlow 22s ease-in-out infinite alternate-reverse;
}

.glow-3 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #ec4899 0%, transparent 70%);
  top: 40%;
  left: 45%;
  opacity: 0.12;
}

@keyframes floatGlow {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.1); }
  100% { transform: translate(-40px, 80px) scale(0.95); }
}

/* 主容器 */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1480px;
  margin: 0 auto;
  padding: 28px 32px 48px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ==========================================================================
   頂部 Header
   ========================================================================== */
.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--card-border);
}

.header-branding {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-badge {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(99, 102, 241, 0.35));
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 24px -4px rgba(56, 189, 248, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon {
  width: 28px;
  height: 28px;
  color: #38bdf8;
  filter: drop-shadow(0 2px 6px rgba(56, 189, 248, 0.6));
}

.header-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* 連線狀態膠囊標籤 */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  transition: all 0.3s ease;
}

.status-pill.connected {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.35);
  color: #34d399;
}

.status-pill.connecting {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.35);
  color: #fbbf24;
}

.status-pill.disconnected {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.35);
  color: #f87171;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 10px currentColor;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* 按鈕風格 */
.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
  backdrop-filter: blur(10px);
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.action-btn-primary {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(37, 99, 235, 0.3));
  border-color: rgba(56, 189, 248, 0.3);
  color: #38bdf8;
}

.action-btn-primary:hover {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.35), rgba(37, 99, 235, 0.5));
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.3);
}

.btn-icon {
  width: 16px;
  height: 16px;
}

.hidden {
  display: none !important;
}

.unit-text {
  opacity: 0.5;
  transition: opacity 0.2s;
}

.unit-text.active {
  opacity: 1;
  font-weight: 700;
  color: #38bdf8;
}

.unit-divider {
  opacity: 0.3;
}

/* ==========================================================================
   概覽統計區塊 (Overview Section)
   ========================================================================== */
.overview-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon-wrap svg {
  width: 18px;
  height: 18px;
}

.icon-temp {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
}

.icon-max {
  background: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
}

.icon-alarm {
  background: rgba(244, 63, 94, 0.15);
  color: #f43f5e;
  transition: all 0.3s;
}

.icon-alarm.active {
  background: rgba(244, 63, 94, 0.35);
  box-shadow: 0 0 16px rgba(244, 63, 94, 0.6);
  animation: pulseAlarm 1s infinite alternate;
}

.icon-broker {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
}

.stat-value-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

.stat-unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}

.stat-footer {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.stat-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
}

.stat-badge.safe {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.stat-badge.alarm-triggered {
  background: rgba(244, 63, 94, 0.2);
  color: #f43f5e;
  box-shadow: 0 0 12px rgba(244, 63, 94, 0.4);
}

.stat-broker-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.broker-row {
  display: flex;
  gap: 6px;
}

.b-label {
  color: var(--text-dim);
}

.b-val {
  color: #a5b4fc;
}

/* ==========================================================================
   感測器網格與卡片 (Sensor Cards & Thermometer)
   ========================================================================== */
.sensors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 28px;
}

.sensor-card {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--shadow-card);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.sensor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--card-border-glow), transparent);
  transition: all 0.4s ease;
}

.sensor-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-hover-border);
  box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.7), 0 0 20px rgba(56, 189, 248, 0.15);
}

.sensor-card.in-alarm {
  border-color: rgba(244, 63, 94, 0.5);
  box-shadow: 0 20px 45px -10px rgba(244, 63, 94, 0.25), 0 0 25px rgba(244, 63, 94, 0.2);
}

.sensor-card.in-alarm::before {
  background: linear-gradient(90deg, transparent, #f43f5e, transparent);
  height: 4px;
  animation: alarmBorderGlow 1.2s infinite alternate;
}

@keyframes alarmBorderGlow {
  0% { opacity: 0.6; filter: drop-shadow(0 0 4px #f43f5e); }
  100% { opacity: 1; filter: drop-shadow(0 0 12px #f43f5e); }
}

/* 卡片頭部 */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.device-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.device-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 10px #10b981;
}

.device-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.status-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  letter-spacing: 0.05em;
}

.status-tag.online {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-tag.offline {
  background: rgba(100, 116, 139, 0.2);
  color: #94a3b8;
  border: 1px solid rgba(100, 116, 139, 0.3);
}

.alarm-banner {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(244, 63, 94, 0.18);
  border: 1px solid rgba(244, 63, 94, 0.45);
  border-radius: 8px;
  color: #fca5a5;
  font-size: 0.75rem;
  font-weight: 600;
  animation: pulseAlarm 1.2s infinite alternate;
}

.alarm-banner.active {
  display: flex;
}

@keyframes pulseAlarm {
  0% { transform: scale(0.98); opacity: 0.85; }
  100% { transform: scale(1.02); opacity: 1; }
}

/* ==========================================================================
   溫度計實體設計 (Realistic 3D Thermometer Display)
   ========================================================================== */
.thermometer-showcase {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 10px 0;
}

/* 溫度計外殼 */
.thermometer-wrapper {
  flex-shrink: 0;
  padding: 12px 14px 16px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 28px;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.5), 0 8px 24px rgba(0, 0, 0, 0.3);
}

.thermometer-glass {
  position: relative;
  width: 90px;
  height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 刻度標記與數字 */
.scale-ticks {
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 48px;
  width: 32px;
  pointer-events: none;
}

.scale-mark {
  position: absolute;
  right: 0;
  display: flex;
  align-items: center;
  transform: translateY(50%);
  gap: 4px;
}

.mark-val {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  font-weight: 500;
  width: 22px;
  text-align: right;
}

.tick {
  width: 6px;
  height: 1.5px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 1px;
}

.tick.major {
  width: 8px;
  background: rgba(255, 255, 255, 0.45);
}

/* 33度告警刻度線 */
.alarm-mark .mark-val {
  color: #f87171;
  font-weight: 700;
}

.alarm-mark .alarm-tick {
  width: 12px;
  height: 2px;
  background: #f43f5e;
  box-shadow: 0 0 6px #f43f5e;
}

/* 玻璃管幹身 (Stem) */
.thermometer-stem {
  position: absolute;
  right: 18px;
  top: 14px;
  bottom: 46px;
  width: 20px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 10px 10px 0 0;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  border-bottom: none;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.6), 0 0 10px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  z-index: 2;
}

/* 玻璃反光紋理 */
.stem-reflection {
  position: absolute;
  inset: 0;
  background: var(--glass-reflection);
  pointer-events: none;
  z-index: 5;
}

/* 水銀液軌 */
.stem-liquid-track {
  position: absolute;
  bottom: 0;
  left: 3px;
  right: 3px;
  top: 4px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 6px 6px 0 0;
  overflow: hidden;
  display: flex;
  flex-direction: column-reverse;
}

/* 液柱高度 (動態平滑動畫) */
.stem-liquid {
  width: 100%;
  background: var(--liquid-gradient);
  border-radius: 6px 6px 0 0;
  transition: height 0.8s cubic-bezier(0.34, 1.3, 0.64, 1), background 0.6s ease;
  position: relative;
  box-shadow: 0 0 16px var(--bulb-glow);
}

/* 彎月面 (Meniscus) */
.meniscus {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  border-radius: 50% 50% 0 0;
  background: rgba(255, 255, 255, 0.55);
}

/* 水銀儲液球 (Bulb) */
.thermometer-bulb {
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 2px solid rgba(255, 255, 255, 0.25);
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.7), 0 4px 16px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
}

.bulb-liquid {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #93c5fd 0%, #0284c7 60%, #0369a1 100%);
  box-shadow: 0 0 20px var(--bulb-glow);
  position: relative;
  transition: all 0.6s ease;
}

.bulb-reflection {
  position: absolute;
  top: 5px;
  left: 7px;
  width: 9px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.75);
  transform: rotate(-35deg);
}

/* ==========================================================================
   側邊遙測讀數區 (Telemetry Readouts)
   ========================================================================== */
.telemetry-readouts {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.primary-temp-display {
  display: flex;
  flex-direction: column;
}

.temp-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.temp-huge-num {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text-main);
  display: flex;
  align-items: baseline;
  gap: 4px;
  transition: color 0.4s ease;
}

.temp-huge-unit {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-muted);
}

.temp-sub-stat {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: 4px;
}

.temp-sub-stat strong {
  color: var(--text-main);
}

.divider {
  opacity: 0.25;
}

/* 次要數據條 (濕度 & 電壓) */
.aux-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.aux-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aux-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 500;
}

.aux-icon {
  width: 14px;
  height: 14px;
}

.hum-icon { color: #38bdf8; }
.volt-icon { color: #a78bfa; }

.aux-value {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.aux-bar-bg {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.aux-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s ease;
}

.hum-fill {
  background: linear-gradient(90deg, #38bdf8, #0284c7);
}

.volt-fill {
  background: linear-gradient(90deg, #a78bfa, #818cf8);
}

/* ==========================================================================
   歷史走勢圖 (Historical Sparkline Chart)
   ========================================================================== */
.history-chart-wrapper {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chart-title {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 500;
}

.chart-seq {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #818cf8;
}

.sparkline-canvas {
  width: 100%;
  height: 65px;
  display: block;
}

/* 卡片底端更新狀態 */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 10px;
  font-family: var(--font-mono);
}

/* ==========================================================================
   底部資訊 (Dashboard Footer)
   ========================================================================== */
.dashboard-footer {
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--card-border);
}

.footer-info {
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.dot-separator {
  opacity: 0.3;
}

/* ==========================================================================
   RWD 響應式優化
   ========================================================================== */
@media (max-width: 900px) {
  .app-container {
    padding: 20px 16px;
  }
  .sensors-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 500px) {
  .thermometer-showcase {
    flex-direction: column;
    align-items: flex-start;
  }
  .thermometer-wrapper {
    align-self: center;
  }
  .temp-huge-num {
    font-size: 2.5rem;
  }
}