/* ==========================================================================
   SmartHome Web-Based Hardware Simulator - SCS 3311
   Design System: Premium Dark Ambient Glassmorphism UI
   ========================================================================== */

:root {
  --bg-dark: #0b0f19;
  --bg-card: rgba(22, 32, 54, 0.75);
  --bg-card-hover: rgba(32, 46, 76, 0.85);
  --bg-modal: #111827;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-highlight: rgba(59, 130, 246, 0.4);
  
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --color-on: #22c55e;
  --color-on-glow: rgba(34, 197, 94, 0.4);
  --color-off: #6b7280;
  --color-error: #ef4444;
  --color-error-glow: rgba(239, 68, 68, 0.4);
  --color-disconnected: #f59e0b;
  --color-disconnected-glow: rgba(245, 158, 11, 0.4);
  
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  
  --shadow-main: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(at 10% 10%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 90% 90%, rgba(139, 92, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  padding-bottom: 60px;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(17, 24, 39, 0.6);
}
::-webkit-scrollbar-thumb {
  background: rgba(156, 163, 175, 0.3);
  border-radius: 4px;
}

/* ==========================================================================
   Header & Dashboard Summary
   ========================================================================== */

header.app-header {
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 32px;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.brand-title {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 46px;
  height: 46px;
  background: var(--gradient-accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.brand-text h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #ffffff;
}

.brand-text p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.sync-status {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.35);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-on);
}

.sync-dot {
  width: 10px;
  height: 10px;
  background-color: var(--color-on);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-on);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
  100% { opacity: 1; transform: scale(1); }
}

.dashboard-stats {
  max-width: 1400px;
  margin: 24px auto 0;
  padding: 0 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-2px);
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.stat-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-info .stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-info .stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   Navigation & Filtering Bar
   ========================================================================== */

.filter-section {
  max-width: 1400px;
  margin: 24px auto 0;
  padding: 0 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.nav-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.tabs-container {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.tab-btn {
  background: rgba(31, 41, 55, 0.7);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn:hover {
  background: rgba(55, 65, 81, 0.8);
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--gradient-accent);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.search-box {
  position: relative;
  min-width: 260px;
  flex-shrink: 0;
}

.search-box input {
  width: 100%;
  background: rgba(31, 41, 55, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 16px 10px 40px;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.25);
}

.search-box::before {
  content: '🔍';
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  opacity: 0.6;
}

/* ==========================================================================
   Main Content Layout & Device Grid
   ========================================================================== */

main.main-content {
  max-width: 1400px;
  margin: 28px auto 0;
  padding: 0 32px;
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
}

.empty-state h3 {
  font-size: 18px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 14px;
}

/* ==========================================================================
   Device Card Component
   ========================================================================== */

.device-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.device-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: var(--color-off);
  transition: var(--transition);
}

.device-card[data-status="ON"]::before {
  background: var(--color-on);
  box-shadow: 0 0 12px var(--color-on);
}

.device-card[data-status="ERROR"]::before {
  background: var(--color-error);
  box-shadow: 0 0 12px var(--color-error);
}

.device-card[data-status="DISCONNECTED"]::before {
  background: var(--color-disconnected);
  box-shadow: 0 0 12px var(--color-disconnected);
}

.device-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-3px);
  box-shadow: var(--shadow-main);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.device-header-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.device-type-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.device-titles h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.device-location {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 3px;
}

/* Status Badge */
.status-badge {
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.status-badge.on {
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-on);
  border: 1px solid rgba(34, 197, 94, 0.35);
}

.status-badge.off {
  background: rgba(107, 114, 128, 0.15);
  color: var(--color-off);
  border: 1px solid rgba(107, 114, 128, 0.35);
}

.status-badge.error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-error);
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.status-badge.disconnected {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-disconnected);
  border: 1px solid rgba(245, 158, 11, 0.35);
}

/* Card Body Summary */
.card-summary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  background: rgba(17, 24, 39, 0.5);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.summary-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.summary-item .label {
  color: var(--text-muted);
  font-size: 11px;
}

.summary-item .value {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 13px;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.btn-open-detail {
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--accent-blue);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  justify-content: center;
}

.btn-open-detail:hover {
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

/* Switch Toggle UI Component */
.switch-toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  flex-shrink: 0;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider-knob {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(107, 114, 128, 0.4);
  transition: .3s;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.slider-knob:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider-knob {
  background-color: var(--color-on);
  border-color: var(--color-on);
  box-shadow: 0 0 10px var(--color-on-glow);
}

input:checked + .slider-knob:before {
  transform: translateX(22px);
}

input:disabled + .slider-knob {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ==========================================================================
   Device Detail Modal (Full Representation of DeviceDetailActivity)
   ========================================================================== */

.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(5, 8, 15, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-modal);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 660px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-header {
  padding: 22px 28px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(31, 41, 55, 0.5);
}

.modal-header-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.modal-header-info h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-header-info p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.modal-close-btn {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}

.modal-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Alert Banner Component */
.status-alert-banner {
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.status-alert-banner.error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.status-alert-banner.disconnected {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.alert-icon {
  font-size: 22px;
  flex-shrink: 0;
}

.alert-content h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 3px;
}

.status-alert-banner.error h4 { color: var(--color-error); }
.status-alert-banner.disconnected h4 { color: var(--color-disconnected); }

.alert-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Control Card Sections */
.detail-card-section {
  background: rgba(31, 41, 55, 0.45);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

.section-label {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Simulation Controls */
.sim-controls-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.btn-sim {
  border: 1px solid var(--border-color);
  background: rgba(17, 24, 39, 0.7);
  color: var(--text-secondary);
  padding: 10px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-sim:hover { background: rgba(55, 65, 81, 0.8); color: #fff; }
.btn-sim[data-sim="ON"]:hover { background: var(--color-on); color: #fff; border-color: var(--color-on); }
.btn-sim[data-sim="OFF"]:hover { background: var(--color-off); color: #fff; border-color: var(--color-off); }
.btn-sim[data-sim="ERROR"]:hover { background: var(--color-error); color: #fff; border-color: var(--color-error); }
.btn-sim[data-sim="DISCONNECTED"]:hover { background: var(--color-disconnected); color: #fff; border-color: var(--color-disconnected); }

/* Range Slider Styling */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}

.custom-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: rgba(107, 114, 128, 0.35);
  outline: none;
  transition: var(--transition);
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-blue);
  cursor: pointer;
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.5);
  transition: var(--transition);
}

.custom-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.custom-slider:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.custom-slider:disabled::-webkit-slider-thumb {
  background: var(--color-off);
  box-shadow: none;
}

/* Switch List Item */
.switch-item-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.switch-item-row:last-child {
  border-bottom: none;
}

.switch-item-info span {
  font-size: 14px;
  font-weight: 500;
}

/* Camera Preview Viewport */
.camera-viewport {
  position: relative;
  width: 100%;
  height: 230px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: #000;
}

.camera-canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.camera-overlay-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rec-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-error);
  border-radius: 50%;
  animation: pulse-dot 1s infinite;
}

.camera-timestamp {
  position: absolute;
  bottom: 12px;
  right: 14px;
  font-family: monospace;
  font-size: 12px;
  background: rgba(0,0,0,0.75);
  padding: 3px 10px;
  border-radius: 4px;
  color: #00ffcc;
}

.night-vision-tint {
  position: absolute;
  top:0; left:0; right:0; bottom:0;
  background: rgba(34, 197, 94, 0.28);
  mix-blend-mode: screen;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.night-vision-tint.active { opacity: 1; }

.motion-box {
  position: absolute;
  top: 25%; left: 30%;
  width: 40%; height: 50%;
  border: 2px dashed #00ffcc;
  box-shadow: 0 0 12px rgba(0, 255, 204, 0.5);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.motion-box.active { opacity: 1; }

/* Schedule Controls */
.schedule-actions {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.btn-schedule {
  flex: 1;
  padding: 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: rgba(17, 24, 39, 0.7);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-schedule:hover {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

.btn-schedule.cancel {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.35);
  color: var(--color-error);
}

.btn-schedule.cancel:hover {
  background: var(--color-error);
  color: #fff;
}

/* Telemetry Grid */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.telemetry-card {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
}

.telemetry-card .t-label {
  font-size: 12px;
  color: var(--text-muted);
}

.telemetry-card .t-val {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 3px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  header.app-header { padding: 16px; }
  .dashboard-stats, .filter-section, main.main-content { padding: 0 16px; }
  .device-grid { grid-template-columns: 1fr; }
  .sim-controls-grid { grid-template-columns: repeat(2, 1fr); }
  .search-box { min-width: 100%; }
}