* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #141b22;
  --glass-bg: rgba(20, 30, 40, 0.5);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-primary: #e0e6ed;
  --text-secondary: #a0b0c0;
  --accent-blue: #00a8ff;
  --accent-green: #00e676;
  --accent-red: #ff5252;
  --accent-yellow: #ffab00;
  --accent-purple: #b388ff;
  --font: 'Tajawal', sans-serif;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

body {
  background: radial-gradient(circle at 30% 10%, #1a2530, #0a0d14 80%);
  color: var(--text-primary);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

/* شريط التنقل */
.navbar {
  width: 95%;
  max-width: 600px;
  margin: 15px auto;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 10px;
  z-index: 100;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--accent-blue);
}
.nav-brand i { font-size: 1.8rem; }
.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: 0.3s;
}
.icon-btn:hover { color: var(--accent-blue); transform: scale(1.1); }

/* الحاوية الرئيسية */
.container {
  width: 95%;
  max-width: 600px;
  margin: 0 auto;
  padding-bottom: 30px;
}

.dashboard {
  padding: 20px;
  margin-bottom: 15px;
}
.connection-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.status-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
}
.led {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 12px currentColor;
}
.led.online { background: var(--accent-green); color: var(--accent-green); animation: pulse 1.5s infinite; }
.led.offline { background: var(--accent-red); color: var(--accent-red); }
@keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.4; } 100% { opacity: 1; } }

.connect-btn {
  padding: 10px 20px;
  background: var(--accent-blue);
  border: none;
  border-radius: 30px;
  font-weight: bold;
  display: flex;
  align-items: center;
  gap: 8px;
}
.connect-btn i { font-size: 1.2rem; }

.gauges {
  display: flex;
  justify-content: space-around;
  gap: 15px;
}
.gauge {
  text-align: center;
}
.gauge-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: conic-gradient(var(--accent-blue) 0deg, #2a3a4a 0deg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 5px;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.6);
}
.gauge-inner {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: #0a0d14;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-weight: 700;
  font-size: 1.5rem;
}
.gauge-inner small { font-size: 0.7rem; color: var(--text-secondary); }

.error-circle {
  background: conic-gradient(var(--accent-red) 0deg, #2a3a4a 0deg);
}
.action-buttons {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 15px;
  margin-bottom: 15px;
}
.action-btn {
  flex: 1;
  padding: 12px 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 15px;
  color: var(--text-primary);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: 0.3s;
}
.action-btn i { font-size: 1.5rem; }
.action-btn:active { transform: scale(0.95); background: var(--accent-blue); }
.action-btn:disabled { opacity: 0.4; pointer-events: none; }
.clear-btn:active { background: var(--accent-red) !important; }

.dtc-list { display: flex; flex-direction: column; gap: 12px; }

.dtc-item {
  background: rgba(20, 25, 35, 0.8);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  padding: 15px;
  border-right: 4px solid var(--accent-red);
  position: relative;
  transition: 0.3s;
}
.dtc-item.severity-warning { border-right-color: var(--accent-yellow); }
.dtc-item.severity-info { border-right-color: var(--accent-blue); }
.dtc-code {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--accent-red);
  margin-bottom: 8px;
}
.desc-en, .desc-ar { margin: 4px 0; font-size: 0.9rem; color: var(--text-secondary); }
.desc-ar { color: var(--text-primary); font-weight: 500; }
.search-btn {
  background: rgba(255,255,255,0.08);
  border: none;
  color: var(--accent-blue);
  padding: 8px 15px;
  border-radius: 20px;
  margin-top: 10px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: 0.3s;
}
.search-btn:hover { background: rgba(0,168,255,0.2); }

.no-dtc {
  text-align: center;
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}
.hidden { display: none !important; }

.live-panel {
  margin-top: 20px;
  padding: 15px;
}
.live-panel h3 { margin-bottom: 10px; color: var(--accent-purple); }

.toast-container {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 9999;
}
.toast {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 30px;
  padding: 12px 25px;
  color: white;
  font-weight: 500;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  animation: slideUp 0.4s ease-out;
}
.toast.success { border-color: var(--accent-green); color: var(--accent-green); }
.toast.error { border-color: var(--accent-red); color: var(--accent-red); }
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.modal-content {
  width: 90%;
  max-width: 450px;
  background: #1e2833;
  border-radius: 20px;
  padding: 20px;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; }
.close-btn { background: none; border: none; color: white; font-size: 2rem; cursor: pointer; }

@media (max-width: 400px) {
  .gauges { gap: 5px; }
  .gauge-circle { width: 80px; height: 80px; }
  .gauge-inner { width: 65px; height: 65px; font-size: 1.2rem; }
                               }