/* ==========================================================================
   OcuGuard AI - Modern Cyber-Health Glassmorphism Stylesheet
   ========================================================================== */

:root {
  /* Color Palette - Cyber Health Theme */
  --bg-main: #070a12;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-inner: rgba(10, 15, 29, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(6, 182, 212, 0.3);
  
  /* Primary & Accent Colors */
  --color-primary: #06b6d4;      /* Electric Cyan */
  --color-primary-glow: rgba(6, 182, 212, 0.35);
  --color-emerald: #10b981;      /* Healthy Green */
  --color-emerald-glow: rgba(16, 185, 129, 0.35);
  --color-amber: #f59e0b;        /* Alert Amber */
  --color-amber-glow: rgba(245, 158, 11, 0.35);
  --color-danger: #ef4444;       /* Fatigue Red */
  --color-danger-glow: rgba(239, 68, 68, 0.45);
  --color-indigo: #6366f1;       /* Deep Accent */
  
  /* Text Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* Typography */
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  
  /* Shadows & Glass effects */
  --glass-blur: blur(16px);
  --card-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.6), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Global */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Ambient Background Glows */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

.bg-glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  top: -100px;
  left: -100px;
}

.bg-glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #6366f1, transparent 70%);
  bottom: 5%;
  right: -150px;
}

.bg-glow-3 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #10b981, transparent 70%);
  top: 40%;
  left: 30%;
  opacity: 0.2;
}

/* Layout Wrapper */
.app-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1360px;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

/* ==========================================================================
   Header / Navbar
   ========================================================================== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  gap: 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo {
  position: relative;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, #06b6d4, #6366f1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  box-shadow: 0 0 20px var(--color-primary-glow);
}

.logo-pulse {
  position: absolute;
  inset: -3px;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-primary);
  animation: pulse-ring 2s infinite ease-out;
}

.brand-info h1 {
  font-size: 1.4rem;
  letter-spacing: -0.5px;
}

.brand-info h1 span {
  background: linear-gradient(90deg, #22d3ee, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-info .tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-center-stats {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.session-stat-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
}

.session-stat-pill i {
  color: var(--color-primary);
}

.session-stat-pill .label {
  color: var(--text-muted);
}

.session-stat-pill .value {
  font-family: var(--font-heading);
  font-weight: 600;
  color: #fff;
}

.rule-20-pill i {
  color: var(--color-amber);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, #0891b2, #06b6d4);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--color-primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #06b6d4, #22d3ee);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
}

.btn-glow {
  animation: glow-pulse 2s infinite ease-in-out;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #000;
}

.btn-warning {
  background: linear-gradient(135deg, #d97706, #f59e0b);
  color: #000;
  font-weight: 700;
}

.btn-warning:hover {
  background: #f59e0b;
  transform: translateY(-1px);
}

.btn-outline-danger {
  background: transparent;
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.btn-outline-danger:hover {
  background: var(--color-danger);
  color: #fff;
}

.btn-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-icon:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-icon.active-mute {
  color: var(--color-danger);
  border-color: var(--color-danger);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-model {
  background: rgba(6, 182, 212, 0.15);
  border-color: rgba(6, 182, 212, 0.4);
  color: #22d3ee;
}

.badge-normal {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.badge-fatigue {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
  display: inline-block;
}

.status-dot.active {
  background: var(--color-emerald);
  box-shadow: 0 0 10px var(--color-emerald);
}

.status-dot.pulsing {
  animation: dot-pulse 1.5s infinite;
}

/* ==========================================================================
   Dashboard Grid Layout
   ========================================================================== */
.main-content {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.dashboard-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.card-title h2, .card-title h3 {
  font-size: 1.15rem;
}

.header-icon {
  color: var(--color-primary);
  font-size: 1.1rem;
}

.fps-counter {
  font-size: 0.75rem;
  color: var(--text-dim);
  background: rgba(0, 0, 0, 0.3);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
}

.dashboard-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ==========================================================================
   Vision Hub & Camera Viewport
   ========================================================================== */
.vision-hub-card {
  display: flex;
  flex-direction: column;
}

.webcam-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.8);
}

/* Placeholder state */
.camera-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  z-index: 2;
  gap: 1rem;
}

.scanner-orbit {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px dashed rgba(6, 182, 212, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: spin 15s linear infinite;
}

.placeholder-icon {
  font-size: 2.2rem;
  color: var(--color-primary);
}

.camera-placeholder h3 {
  font-size: 1.25rem;
}

.camera-placeholder p {
  color: var(--text-muted);
  font-size: 0.88rem;
  max-width: 380px;
}

/* Webcam Canvas */
.webcam-canvas-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.webcam-canvas-wrapper canvas,
.webcam-canvas-wrapper video {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover;
  transform: scaleX(-1); /* Mirror view for natural webcam experience */
}

/* Futuristic HUD Overlay */
.hud-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}

/* Corner Brackets */
.hud-bracket {
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: var(--color-primary);
  border-style: solid;
  opacity: 0.85;
}

.hud-bracket.top-left {
  top: 15px;
  left: 15px;
  border-width: 3px 0 0 3px;
}

.hud-bracket.top-right {
  top: 15px;
  right: 15px;
  border-width: 3px 3px 0 0;
}

.hud-bracket.bottom-left {
  bottom: 15px;
  left: 15px;
  border-width: 0 0 3px 3px;
}

.hud-bracket.bottom-right {
  bottom: 15px;
  right: 15px;
  border-width: 0 3px 3px 0;
}

/* Face / Eye Scanning Box */
.eye-scan-box {
  position: absolute;
  top: 22%;
  left: 18%;
  right: 18%;
  height: 55%;
  border: 1px dashed rgba(6, 182, 212, 0.45);
  border-radius: 40px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.1);
  overflow: hidden;
  animation: scan-pulse 3s infinite ease-in-out;
}

.scanner-sweep-line {
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #06b6d4, #22d3ee, transparent);
  box-shadow: 0 0 10px #06b6d4;
  top: 0;
  animation: scan-sweep 2.8s infinite linear;
}

.eye-target {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.target-crosshair {
  width: 44px;
  height: 44px;
  border: 2px solid rgba(6, 182, 212, 0.7);
  border-radius: 50%;
  position: relative;
}

.target-crosshair::before, .target-crosshair::after {
  content: '';
  position: absolute;
  background: var(--color-primary);
}

.target-crosshair::before {
  width: 10px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.target-crosshair::after {
  height: 10px;
  width: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.eye-target span {
  font-size: 0.65rem;
  color: var(--color-primary);
  background: rgba(0, 0, 0, 0.6);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

/* Floating HUD Tags */
.hud-tag {
  position: absolute;
  background: rgba(7, 10, 18, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(6, 182, 212, 0.3);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: #22d3ee;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hud-tag.top-tag {
  top: 15px;
  left: 50%;
  transform: translateX(-50%);
}

.hud-tag.bottom-tag {
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
}

/* Screen Alert Flash */
.fatigue-alert-flash {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle, transparent 40%, rgba(239, 68, 68, 0.45) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 6;
}

.fatigue-alert-flash.active {
  opacity: 1;
  animation: flash-pulse 1s infinite alternate;
}

/* Camera Control Bar */
.camera-control-bar {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.ctrl-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.ctrl-info {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.02);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.ctrl-info .info-label {
  color: var(--color-emerald);
  font-weight: 600;
}

/* ==========================================================================
   Diagnosis & Probability Meters
   ========================================================================== */
.diagnosis-banner {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  padding: 1.15rem;
  border-radius: var(--radius-md);
  background: var(--bg-inner);
  border: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
  transition: var(--transition-normal);
}

.diag-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.diag-text h4 {
  font-size: 1.05rem;
  margin-bottom: 0.15rem;
}

.diag-text p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Diagnosis Status Variants */
.diagnosis-banner.state-normal {
  border-color: rgba(16, 185, 129, 0.4);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(15, 23, 42, 0.8));
}

.diagnosis-banner.state-normal .diag-icon-wrapper {
  background: rgba(16, 185, 129, 0.2);
  color: var(--color-emerald);
  box-shadow: 0 0 15px var(--color-emerald-glow);
}

.diagnosis-banner.state-fatigue {
  border-color: rgba(239, 68, 68, 0.5);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(15, 23, 42, 0.8));
  animation: shake 0.5s ease-in-out;
}

.diagnosis-banner.state-fatigue .diag-icon-wrapper {
  background: rgba(239, 68, 68, 0.25);
  color: var(--color-danger);
  box-shadow: 0 0 15px var(--color-danger-glow);
}

/* Probability Bars */
.prediction-bars-container {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.prob-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.prob-header #confidence-percentage {
  font-weight: 700;
  color: #fff;
}

.class-meters {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.class-meter-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.meter-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.meter-labels .class-name {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
}

.meter-labels .class-val {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.88rem;
}

.meter-track {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.meter-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.15s ease-out;
}

.meter-fill.fill-normal {
  background: linear-gradient(90deg, #059669, #10b981);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.meter-fill.fill-fatigue {
  background: linear-gradient(90deg, #dc2626, #ef4444);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

/* Continuous Warning Box */
.fatigue-warning-box {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 0.9rem;
  border-radius: var(--radius-md);
  margin-top: 1.15rem;
}

.warning-icon {
  font-size: 1.5rem;
  color: var(--color-amber);
  flex-shrink: 0;
}

.warning-text {
  flex-grow: 1;
}

.warning-text strong {
  display: block;
  font-size: 0.85rem;
  color: var(--color-amber);
}

.warning-text p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

/* ==========================================================================
   Metrics Grid
   ========================================================================== */
.score-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-emerald);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin-bottom: 1.15rem;
}

.metric-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-inner);
  border: 1px solid var(--border-color);
  padding: 0.85rem;
  border-radius: var(--radius-md);
}

.metric-icon-box {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.metric-icon-box.cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--color-primary);
}

.metric-icon-box.amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-amber);
}

.metric-icon-box.emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-emerald);
}

.metric-icon-box.indigo {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-indigo);
}

.metric-data {
  display: flex;
  flex-direction: column;
}

.metric-val {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
}

.metric-lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Section Containers & Exercise Grid
   ========================================================================== */
.section-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.section-subtitle {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.35rem;
}

.section-title-wrap h2 {
  font-size: 1.45rem;
}

.section-title-wrap p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.25rem;
}

.exercise-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.exercise-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: var(--transition-normal);
}

.exercise-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.7), 0 0 20px rgba(6, 182, 212, 0.15);
}

.ex-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 0.68rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  color: var(--text-muted);
}

.ex-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.ex-icon.emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-emerald);
}

.ex-icon.cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--color-primary);
}

.ex-icon.indigo {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-indigo);
}

.ex-icon.amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-amber);
}

.exercise-card h3 {
  font-size: 1.15rem;
}

.exercise-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-grow: 1;
}

.ex-benefits {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: #cbd5e1;
  background: rgba(0, 0, 0, 0.25);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
}

.ex-benefits i {
  color: var(--color-emerald);
  margin-right: 0.35rem;
}

/* ==========================================================================
   Ergonomics Tips Grid
   ========================================================================== */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.25rem;
}

.tip-box {
  background: var(--bg-inner);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  position: relative;
}

.tip-num {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.4), transparent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.25rem;
}

.tip-box h4 {
  font-size: 0.95rem;
  margin-bottom: 0.45rem;
  color: #fff;
}

.tip-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Detection Logs Table
   ========================================================================== */
.logs-table-wrapper {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-sm);
  background: var(--bg-inner);
  border: 1px solid var(--border-color);
}

.logs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.82rem;
}

.logs-table th {
  background: rgba(255, 255, 255, 0.04);
  padding: 0.85rem 1rem;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.logs-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: #cbd5e1;
}

.logs-table tr:last-child td {
  border-bottom: none;
}

.logs-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
  color: var(--text-dim);
  gap: 0.65rem;
}

.empty-state i {
  font-size: 2rem;
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.85);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-fast);
}

.modal-backdrop.open .modal-dialog {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.modal-title h3 {
  font-size: 1.15rem;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem;
  transition: var(--transition-fast);
}

.modal-close-btn:hover {
  color: #fff;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background: rgba(0, 0, 0, 0.2);
}

/* Guided Exercise Visuals in Modal */
.exercise-visual-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  text-align: center;
  gap: 1.25rem;
}

.visual-animation-circle {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  border: 3px solid var(--color-emerald);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 25px var(--color-emerald-glow);
  transition: all 0.5s ease;
}

.inner-focus-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-emerald);
  box-shadow: 0 0 15px var(--color-emerald);
  transition: all 0.5s ease;
}

.animation-guide-icon {
  position: absolute;
  font-size: 1.8rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Animation states for exercises */
.visual-animation-circle.anim-focus {
  animation: breathing-circle 6s infinite ease-in-out;
}

.visual-animation-circle.anim-blink {
  animation: blink-cycle 3s infinite ease-in-out;
}

.visual-animation-circle.anim-roll {
  animation: spin 4s linear infinite;
}

.visual-animation-circle.anim-roll .inner-focus-dot {
  transform: translateY(-45px);
}

.exercise-countdown-display {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.exercise-step-instruction {
  font-size: 0.95rem;
  color: #cbd5e1;
  max-width: 380px;
}

.progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: 1rem;
}

.modal-progress-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #10b981, #06b6d4);
  border-radius: var(--radius-full);
  transition: width 1s linear;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #cbd5e1;
}

.form-control {
  background: var(--bg-inner);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-glow);
}

.form-control-sm {
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
}

.input-with-action {
  display: flex;
  gap: 0.5rem;
}

.input-with-action input {
  flex-grow: 1;
}

.form-help {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.form-help code {
  color: #22d3ee;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

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

.range-val {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.9rem;
}

.form-range {
  width: 100%;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.class-mapping-box {
  background: var(--bg-inner);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.mapping-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.mapping-row .badge {
  min-width: 75px;
  justify-content: center;
}

.mapping-row select {
  flex-grow: 1;
}

.mt-2 {
  margin-top: 0.5rem;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 25px;
  right: 25px;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  z-index: 2000;
  pointer-events: none;
}

.toast {
  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: 0.85rem 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
  pointer-events: auto;
  min-width: 280px;
  max-width: 380px;
  animation: slide-in 0.3s ease-out;
}

.toast.toast-warning {
  border-color: rgba(245, 158, 11, 0.5);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(15, 23, 42, 0.95));
}

.toast.toast-danger {
  border-color: rgba(239, 68, 68, 0.5);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(15, 23, 42, 0.95));
}

.toast.toast-success {
  border-color: rgba(16, 185, 129, 0.5);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(15, 23, 42, 0.95));
}

.toast-icon {
  font-size: 1.25rem;
}

.toast.toast-warning .toast-icon { color: var(--color-amber); }
.toast.toast-danger .toast-icon { color: var(--color-danger); }
.toast.toast-success .toast-icon { color: var(--color-emerald); }

.toast-msg {
  font-size: 0.85rem;
  color: #fff;
  flex-grow: 1;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.app-footer {
  text-align: center;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-dim);
  font-size: 0.8rem;
}

.app-footer .disclaimer {
  margin-top: 0.35rem;
  font-size: 0.72rem;
}

/* ==========================================================================
   Keyframes & Animations
   ========================================================================== */
@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 0; }
  100% { transform: scale(0.95); opacity: 0; }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 4px 15px var(--color-primary-glow); }
  50% { box-shadow: 0 4px 28px rgba(6, 182, 212, 0.7); }
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes scan-sweep {
  0% { top: 0; opacity: 0; }
  15% { opacity: 1; }
  85% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

@keyframes scan-pulse {
  0%, 100% { border-color: rgba(6, 182, 212, 0.3); }
  50% { border-color: rgba(6, 182, 212, 0.8); }
}

@keyframes flash-pulse {
  0% { opacity: 0.3; }
  100% { opacity: 0.85; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

@keyframes breathing-circle {
  0%, 100% { transform: scale(0.8); border-color: #06b6d4; }
  50% { transform: scale(1.25); border-color: #10b981; }
}

@keyframes blink-cycle {
  0%, 45%, 55%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.1); opacity: 0.3; }
}

@keyframes slide-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr;
  }
  
  .navbar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .nav-actions {
    justify-content: flex-end;
  }
}

@media (max-width: 768px) {
  .app-wrapper {
    padding: 1rem;
    gap: 1.25rem;
  }

  .nav-center-stats {
    flex-direction: column;
    align-items: stretch;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }
}