/* =======================================
   ?? SMART GREEN HUB - FUTURISTIC UI
   (Dual Theme + Alert + Fan Auto Mode Glow)
   ======================================= */

/* === DARK THEME === */
body.dark {
  --bg-color: radial-gradient(circle at top left, #0f172a, #05060a 60%);
  --card-bg: rgba(20, 25, 40, 0.6);
  --border-glow: rgba(0, 255, 187, 0.25);
  --neon-green: #00ffbb;
  --accent-blue: #00c6ff;
  --accent-purple: #8a4fff;
  --fan-auto-blue: #00aaff;
  --text-light: #e5e5e5;
  --text-dim: #aaa;
  --glass-blur: blur(12px);
  --shadow-glow: 0 0 25px rgba(0, 255, 187, 0.2);
}

/* === LIGHT THEME === */
body.light {
  --bg-color: linear-gradient(180deg, #f3f4f6, #ffffff);
  --card-bg: rgba(255, 255, 255, 0.85);
  --border-glow: rgba(0, 200, 150, 0.25);
  --neon-green: #00bfa6;
  --accent-blue: #009dff;
  --accent-purple: #7b3fff;
  --fan-auto-blue: #009dff;
  --text-light: #1c1c1c;
  --text-dim: #555;
  --glass-blur: blur(6px);
  --shadow-glow: 0 0 25px rgba(0, 180, 150, 0.2);
}

/* === BASE STYLING === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
  transition: all 0.35s ease-in-out;
}

body {
  background: var(--bg-color);
  color: var(--text-light);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: 40px 0;
  overflow-x: hidden;
}

.wrap {
  width: 90%;
  max-width: 1200px;
}

/* === HEADER === */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(145deg, rgba(15, 20, 30, 0.6), rgba(10, 10, 15, 0.4));
  border: 1px solid var(--border-glow);
  border-radius: 20px;
  padding: 20px 30px;
  margin-bottom: 30px;
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-glow);
}

header h1 {
  color: var(--neon-green);
  font-size: 2rem;
  font-weight: 700;
  text-shadow: 0 0 20px var(--neon-green);
}

header p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.switches {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* === SWITCHES (Auto Mode / Theme) === */
.switch {
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
}
.switch input {
  display: none;
}
.switch .slider {
  width: 45px;
  height: 22px;
  background: #333;
  border-radius: 25px;
  position: relative;
  cursor: pointer;
  transition: all 0.4s ease;
}
.switch .slider::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  background: #888;
  border-radius: 50%;
  top: 2px;
  left: 3px;
  transition: 0.3s;
}
.switch input:checked + .slider {
  background: linear-gradient(135deg, var(--neon-green), var(--accent-blue));
  box-shadow: 0 0 20px var(--neon-green);
}
.switch input:checked + .slider::after {
  transform: translateX(22px);
  background: #0e101a;
}

/* === SENSOR GRID === */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 15px;
}

.card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border-radius: 20px;
  padding: 25px;
  border: 1px solid var(--border-glow);
  box-shadow: 0 0 20px rgba(0, 255, 187, 0.05);
  transition: 0.4s ease;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.card h3 {
  color: var(--neon-green);
  margin-bottom: 6px;
}
.card .value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 4px;
}
.card span {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* === ALERT MODE FOR TDS CARD === */
.card.alert {
  border: 2px solid #ff0033 !important;
  box-shadow: 0 0 25px rgba(255, 0, 0, 0.8) !important;
  animation: alertBlink 1.2s infinite ease-in-out;
}
@keyframes alertBlink {
  0%, 100% { background-color: rgba(255, 0, 0, 0.1); transform: scale(1); }
  50% { background-color: rgba(255, 0, 0, 0.3); transform: scale(1.02); }
}

/* === DEVICE CONTROLS === */
.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin: 35px 0;
}
.control-card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border-radius: 20px;
  padding: 25px 20px;
  text-align: center;
  border: 1px solid var(--border-glow);
  transition: 0.4s ease;
  box-shadow: 0 0 15px rgba(0, 255, 187, 0.05);
  position: relative;
}
.control-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}
.control-card h4 {
  margin-bottom: 12px;
  color: var(--neon-green);
  font-weight: 600;
  text-shadow: 0 0 10px var(--neon-green);
}

/* === TOGGLE SLIDER === */
.toggle-control {
  display: inline-block;
  position: relative;
  width: 60px;
  height: 30px;
}
.toggle-control input {
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-control .slider {
  position: absolute;
  cursor: pointer;
  background: #1d1f2b;
  border-radius: 30px;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  transition: all 0.4s;
  box-shadow: inset 0 0 10px rgba(0, 255, 187, 0.1);
}
.toggle-control .slider::before {
  position: absolute;
  content: "";
  height: 24px;
  width: 24px;
  left: 3px;
  bottom: 3px;
  background: #666;
  border-radius: 50%;
  transition: all 0.4s;
}
.toggle-control input:checked + .slider {
  background: linear-gradient(135deg, var(--neon-green), var(--accent-blue));
  box-shadow: 0 0 25px rgba(0, 255, 187, 0.5);
  animation: glowPulse 1.6s infinite;
}
.toggle-control input:checked + .slider::before {
  transform: translateX(30px);
  background: #0e101a;
  box-shadow: 0 0 15px var(--neon-green);
}

/* === FAN AUTO MODE GLOW === */
#card-fan.auto-active {
  border: 2px solid var(--fan-auto-blue);
  box-shadow: 0 0 25px var(--fan-auto-blue);
  animation: fanPulse 1.5s infinite ease-in-out;
}
@keyframes fanPulse {
  0%, 100% { box-shadow: 0 0 10px var(--fan-auto-blue); transform: scale(1); }
  50% { box-shadow: 0 0 25px var(--fan-auto-blue); transform: scale(1.03); }
}

/* === CHART SECTION === */
.charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.chart-card {
  background: radial-gradient(circle at top left, rgba(0, 255, 187, 0.05), rgba(20, 25, 40, 0.7));
  backdrop-filter: var(--glass-blur);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid rgba(0, 255, 187, 0.3);
  box-shadow: 0 0 25px rgba(0, 255, 187, 0.1);
  transition: 0.4s ease;
}
.chart-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 40px rgba(0, 255, 187, 0.2);
}
.chart-card h4 {
  color: var(--neon-green);
  margin-bottom: 12px;
  font-weight: 600;
  text-shadow: 0 0 12px var(--neon-green);
}
canvas {
  width: 100% !important;
  height: 200px !important;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(10, 15, 25, 0.8), rgba(0, 0, 0, 0.4));
  box-shadow: inset 0 0 25px rgba(0, 255, 187, 0.1);
  transition: all 0.4s ease;
}
canvas:hover {
  box-shadow: inset 0 0 35px rgba(0, 255, 187, 0.2);
}

/* === ANIMATION: PULSE GLOW === */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 15px rgba(0, 255, 187, 0.4); }
  50% { box-shadow: 0 0 25px rgba(0, 255, 187, 0.8); }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .controls {
    grid-template-columns: 1fr;
  }
  .charts {
    grid-template-columns: 1fr;
  }
}