/* ============================================================
   SchoolAir Dashboard - Refined Design System
   Real-Time Air Quality Monitoring Interface
   ============================================================ */

body {
  background: linear-gradient(135deg, var(--color-deep-forest) 0%, var(--color-vibrant-teal) 50%, var(--color-light-sage) 100%);
  min-height: 100vh;
  padding: var(--space-xl);
}

/* ============================================================
   DASHBOARD HEADER - REDESIGNED
   ============================================================ */

.dashboard-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
  color: var(--color-white);
  animation: slideDown 0.5s ease-out;
}

.dashboard-header h1 {
  color: var(--color-white);
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  line-height: 1.1;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.dashboard-header h2 {
  color: var(--color-vibrant-teal);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.dashboard-subtitle {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  margin-top: var(--space-sm);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

/* ============================================================
   CLASSROOM GRID - REDESIGNED
   ============================================================ */

.classrooms-container {
  max-width: 1400px;
  margin: 0 auto;
}

.classrooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.classroom-card {
  background: rgba(255, 251, 240, 0.98);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-top: 4px solid var(--color-vibrant-teal);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease-out;
}

.classroom-card:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
  transform: translateY(-6px);
}

.classroom-card.poor {
  border-top-color: var(--color-danger);
}

.classroom-card.moderate {
  border-top-color: var(--color-warning);
}

.classroom-card.good {
  border-top-color: var(--color-success);
}

/* ============================================================
   CLASSROOM CARD HEADER
   ============================================================ */

.classroom-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-light-sage);
}

.classroom-name {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
}

.classroom-emoji {
  font-size: 2rem;
  line-height: 1;
}

.classroom-title {
  color: var(--color-deep-forest);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.3;
}

.classroom-header-right {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.status-good {
  background: linear-gradient(135deg, var(--color-success) 0%, #45a049 100%);
  color: var(--color-white);
}

.status-moderate {
  background: linear-gradient(135deg, var(--color-warning) 0%, #fb8c00 100%);
  color: var(--color-white);
}

.status-poor {
  background: linear-gradient(135deg, var(--color-danger) 0%, #e53935 100%);
  color: var(--color-white);
}

.fan-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-light-sage);
  color: var(--color-vibrant-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-base);
}

.fan-icon.slow {
  animation: spin 4s linear infinite;
  color: #b0bec5;
}

.fan-icon.medium {
  animation: spin 2s linear infinite;
  color: var(--color-amber-gold);
}

.fan-icon.fast {
  animation: spin 0.8s linear infinite;
  color: var(--color-coral-pink);
}

/* ============================================================
   ALERT MESSAGE
   ============================================================ */

.alert-message {
  color: var(--color-coral-pink);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 112, 67, 0.08);
  border-left: 3px solid var(--color-coral-pink);
  border-radius: var(--radius-sm);
  display: none;
}

.alert-message.show {
  display: block;
  animation: pulse 2s infinite;
}

/* ============================================================
   AQI GAUGE - REFINED
   ============================================================ */

.gauge-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: var(--space-lg) 0;
  position: relative;
  height: 200px;
}

.gauge-canvas {
  position: relative;
  width: 160px;
  height: 160px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
}

.gauge-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 10;
}

.gauge-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-deep-forest);
  line-height: 1;
  display: block;
}

.gauge-label {
  font-size: 0.75rem;
  color: var(--color-stone);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--space-xs);
}

/* ============================================================
   METRICS GRID
   ============================================================ */

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.metric-card {
  background: linear-gradient(135deg, rgba(232, 245, 233, 0.6) 0%, rgba(255, 251, 240, 0.8) 100%);
  border: 1px solid var(--color-vibrant-teal);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  backdrop-filter: blur(10px);
  border-left: 3px solid var(--color-vibrant-teal);
  transition: all var(--transition-base);
}

.metric-card:hover {
  background: linear-gradient(135deg, rgba(232, 245, 233, 0.8) 0%, rgba(255, 251, 240, 1) 100%);
  border-left-color: var(--color-deep-forest);
}

.metric-label {
  color: var(--color-stone);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.metric-value {
  color: var(--color-deep-forest);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
}

.metric-unit {
  color: var(--color-stone);
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

/* ============================================================
   LEGEND
   ============================================================ */

.gauge-legend {
  display: flex;
  justify-content: space-around;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-light-sage);
  margin-top: var(--space-md);
  font-size: 0.8rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-charcoal);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
}

.legend-color.good {
  background: var(--color-success);
}

.legend-color.moderate {
  background: var(--color-warning);
}

.legend-color.poor {
  background: var(--color-danger);
}

/* ============================================================
   MODAL - REFINED
   ============================================================ */

.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  animation: fadeInUp 0.3s ease-out;
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideDown 0.3s ease-out;
}

.modal-header {
  background: linear-gradient(135deg, var(--color-deep-forest) 0%, var(--color-vibrant-teal) 100%);
  color: var(--color-white);
  padding: var(--space-2xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: none;
}

.modal-header h2 {
  color: var(--color-white);
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0;
}

.modal-close {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.modal-body {
  padding: var(--space-2xl);
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.chart-container {
  background: var(--color-silver);
  border: 1px solid var(--color-light-sage);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
  border-left: 4px solid var(--color-vibrant-teal);
}

.chart-title {
  color: var(--color-deep-forest);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  text-align: center;
}

.modal-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  background: var(--color-light-sage);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
}

.modal-stat {
  background: var(--color-white);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  text-align: center;
  border-left: 3px solid var(--color-vibrant-teal);
}

.modal-stat-value {
  color: var(--color-deep-forest);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.modal-stat-label {
  color: var(--color-stone);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */

@media (max-width: 1024px) {
  .classrooms-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .charts-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .dashboard-header h1 {
    font-size: 2rem;
  }

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

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

  .modal-content {
    width: 95%;
    max-height: 95vh;
  }

  .modal-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  body {
    padding: var(--space-md);
  }

  .dashboard-header h1 {
    font-size: 1.6rem;
  }

  .classroom-card {
    padding: var(--space-lg);
  }

  .classroom-emoji {
    font-size: 1.6rem;
  }

  .classroom-title {
    font-size: 1rem;
  }

  .gauge-container {
    height: 160px;
  }

  .gauge-canvas {
    width: 130px;
    height: 130px;
  }

  .gauge-number {
    font-size: 1.6rem;
  }

  .metrics-grid {
    gap: var(--space-sm);
  }

  .metric-card {
    padding: var(--space-sm);
  }

  .metric-value {
    font-size: 1.1rem;
  }

  .modal-header {
    padding: var(--space-lg);
  }

  .modal-header h2 {
    font-size: 1.3rem;
  }

  .modal-body {
    padding: var(--space-lg);
  }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

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

/* ============================================================
   ACCESSIBILITY
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}