/* Duton Environmental Monitoring Dashboard - Main Styles */

/* CSS Variables for theming */
:root {
  --primary-color: #2e5aac;
  --primary-light: #4472c4;
  --primary-dark: #1d3d73;
  --secondary-color: #00c851;
  --accent-color: #ff6b35;
  --warning-color: #ffbb33;
  --danger-color: #ff4444;
  
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --text-inverse: #ffffff;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --bg-dark: #343a40;
  
  --border-color: #dee2e6;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-xxl: 1.5rem;
}

/* Dark theme variables */
[data-theme="dark"] {
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #999999;
  --text-inverse: #333333;
  
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-tertiary: #404040;
  --bg-dark: #121212;
  
  --border-color: #404040;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Layout */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  display: flex;
  padding: var(--spacing);
  gap: var(--spacing);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.left-panel {
  flex: 1;
  min-width: 0;
}

.right-panel {
  width: 320px;
  flex-shrink: 0;
}

/* Header */
.header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  position: relative;
}

.logo-img {
  height: 40px;
  width: auto;
  transition: opacity 0.3s ease;
}

.light-logo {
  opacity: 1;
}

.dark-logo {
  opacity: 0;
  position: absolute;
  top: 0;
  left: 0;
}

[data-theme="dark"] .light-logo {
  opacity: 0;
}

[data-theme="dark"] .dark-logo {
  opacity: 1;
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--primary-color);
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

/* Avatar */
.avatar-link {
  text-decoration: none;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: all 0.2s ease;
}

.avatar:hover {
  background-color: var(--primary-dark);
  transform: scale(1.05);
}

/* Buttons */
.btn-outline, .login-button {
  background: none;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: var(--spacing-sm) var(--spacing);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.btn-outline:hover, .login-button:hover {
  background-color: var(--primary-color);
  color: var(--text-inverse);
  text-decoration: none;
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
}

.btn-group {
  display: flex;
  gap: var(--spacing-xs);
}

.btn-group .btn-outline.active {
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

/* Cards */
.cards-grid {
  display: grid;
  gap: var(--spacing);
  margin-bottom: var(--spacing-lg);
}

.cards-grid.horizontal {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.pms-card, .env-card, .info-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.pms-card:hover, .env-card:hover, .info-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing);
}

.card-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  color: var(--text-primary);
}

.card-content {
  position: relative;
}

/* Gauge Styles */
.gauge-container {
  width: 100%;
  max-width: 200px;
  margin: 0 auto var(--spacing);
}

.gauge-container svg {
  width: 100%;
  height: auto;
}

.gauge-bg {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 4;
}

.gauge-meter {
  fill: none;
  stroke: url(#gauge-gradient);
  stroke-width: 4;
  stroke-linecap: round;
  transition: stroke-dasharray 0.5s ease;
}

.gauge-pointer {
  fill: var(--text-primary);
}

.gauge-value {
  font-size: 16px;
  font-weight: 600;
  fill: var(--text-primary);
}

.gauge-label {
  font-size: 10px;
  fill: var(--text-secondary);
}

/* Environment Card Styles */
.value-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing);
  margin-bottom: var(--spacing);
}

.value-group {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.value-group .number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
}

.value-group .unit {
  font-size: var(--font-size);
  color: var(--text-secondary);
}

.value-divider {
  font-size: 1.5rem;
  color: var(--text-muted);
}

.range {
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

.last-update {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Chart Section */
.chart-section {
  margin-bottom: var(--spacing-xl);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing);
  flex-wrap: wrap;
  gap: var(--spacing);
}

.chart-controls {
  display: flex;
  gap: var(--spacing);
  flex-wrap: wrap;
}

.chart-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  height: 400px;
  position: relative;
}

.chart-container canvas {
  max-height: 100%;
}

/* Info Section */
.info-sec {
  margin-bottom: var(--spacing-xl);
}

.info-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing);
}

.scrollable-card {
  max-height: 200px;
  overflow-y: auto;
}

.doc-list {
  list-style: none;
  padding: 0;
}

.doc-list li {
  margin-bottom: var(--spacing-sm);
}

.doc-list a {
  color: var(--primary-color);
  text-decoration: none;
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) 0;
  display: block;
  border-bottom: 1px solid var(--border-color);
  transition: color 0.2s ease;
}

.doc-list a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Right Panel Widgets */
.device-id, .live-datetime {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing);
  margin-bottom: var(--spacing);
  text-align: center;
}

.location-widget {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing);
}

.widget-header h3 {
  margin: 0;
}

.map-placeholder {
  width: 100%;
  height: 200px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing);
  position: relative;
  overflow: hidden;
}

.location-details {
  font-size: var(--font-size-sm);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

/* Forms */
.data-request-form {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
}

.data-request-form h3 {
  margin-bottom: var(--spacing);
}

.form-group {
  margin-bottom: var(--spacing);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: var(--font-size);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(46, 90, 172, 0.1);
}

/* SPOC and Client Info */
.spoc-info, .client-info {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

/* Login Styles */
.login-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  padding: var(--spacing);
  position: relative;
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-header .logo {
  justify-content: center;
  margin-bottom: var(--spacing);
}

.login-header h2 {
  color: var(--text-inverse);
  margin: 0;
}

.auth-form {
  background-color: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
  display: none;
}

.auth-form.active {
  display: block;
}

.form-body {
  margin-bottom: var(--spacing-lg);
}

.error-message {
  color: var(--danger-color);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing);
  padding: var(--spacing-sm);
  background-color: rgba(255, 68, 68, 0.1);
  border: 1px solid rgba(255, 68, 68, 0.2);
  border-radius: var(--border-radius);
  display: none;
}

.error-message.show {
  display: block;
}

.login-button {
  width: 100%;
  background-color: var(--primary-color);
  color: var(--text-inverse);
  border: none;
  padding: var(--spacing);
  font-size: var(--font-size);
  font-weight: 600;
  margin-bottom: var(--spacing);
}

.login-button:hover {
  background-color: var(--primary-dark);
}

.form-footer {
  text-align: center;
}

.form-footer a {
  color: var(--primary-color);
  font-size: var(--font-size-sm);
}

.login-container .theme-toggle {
  position: absolute;
  top: var(--spacing);
  right: var(--spacing);
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--text-inverse);
}

.login-container .theme-toggle:hover {
  background-color: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

/* OTP and Password Reset Styles */
.otp-timer {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: var(--spacing-xs);
}

.password-strength, .password-match {
  font-size: 0.75rem;
  margin-top: var(--spacing-xs);
}

.password-strength span {
  font-weight: 600;
}

.password-strength .weak { color: var(--danger-color); }
.password-strength .medium { color: var(--warning-color); }
.password-strength .strong { color: var(--secondary-color); }

.password-match.match { color: var(--secondary-color); }
.password-match.no-match { color: var(--danger-color); }

/* Success/Info Messages */
.notification {
  padding: var(--spacing);
  border-radius: var(--border-radius);
  margin: var(--spacing) 0;
  display: none;
}

.notification.success {
  background-color: rgba(0, 200, 81, 0.1);
  border: 1px solid rgba(0, 200, 81, 0.2);
  color: var(--secondary-color);
}

.notification.error {
  background-color: rgba(255, 68, 68, 0.1);
  border: 1px solid rgba(255, 68, 68, 0.2);
  color: var(--danger-color);
}

.notification.show {
  display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .main-content {
    flex-direction: column;
  }
  
  .right-panel {
    width: 100%;
  }
  
  .cards-grid.horizontal {
    grid-template-columns: 1fr;
  }
  
  .chart-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .chart-controls {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: var(--spacing);
  }
  
  .header-right {
    order: -1;
    justify-content: space-between;
    width: 100%;
  }
  
  .info-row {
    grid-template-columns: 1fr;
  }
  
  .btn-group {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .value-row {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .value-divider {
    display: none;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: var(--spacing-sm);
  }
  
  .pms-card, .env-card, .info-card, .location-widget, .data-request-form {
    padding: var(--spacing);
  }
  
  .chart-container {
    padding: var(--spacing);
    height: 300px;
  }
  
  .login-container {
    padding: var(--spacing-sm);
  }
  
  .auth-form {
    padding: var(--spacing);
  }
  
  .value-group .number {
    font-size: 1.5rem;
  }
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--border-color);
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: var(--spacing); }
.hidden { display: none; }
.visible { display: block; }

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--border-radius-sm);
  transition: background-color 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Focus Visible for Accessibility */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Sensor Selection Page */
.sensor-select-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
  background: var(--bg-primary);
}

.sensor-select-header {
  text-align: center;
  margin-bottom: 3rem;
}

.sensor-select-header h2 {
  color: var(--text-primary);
  margin: 1rem 0 0.5rem;
  font-size: 2rem;
  font-weight: 600;
}

.welcome-message {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 0;
}

.sensor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  width: 100%;
  margin-bottom: 2rem;
}

.sensor-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}

.sensor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.sensor-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.sensor-status.online .status-dot {
  background-color: var(--secondary-color);
  box-shadow: 0 0 8px rgba(0, 200, 81, 0.4);
}

.sensor-status.offline .status-dot {
  background-color: var(--danger-color);
}

.status-text {
  font-weight: 500;
  font-size: 0.9rem;
}

.sensor-status.online .status-text {
  color: var(--secondary-color);
}

.sensor-status.offline .status-text {
  color: var(--danger-color);
}

.sensor-info h3 {
  color: var(--text-primary);
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
}

.sensor-location {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0.25rem 0;
}

.sensor-site {
  color: var(--primary-color);
  font-weight: 500;
  font-size: 0.9rem;
  margin: 0.25rem 0 1rem;
}

.sensor-readings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1rem 0;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: 8px;
}

.reading-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.reading-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.reading-value {
  font-weight: 600;
  font-size: 1rem;
}

.aqi-good {
  color: var(--secondary-color);
}

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

.aqi-poor {
  color: var(--accent-color);
}

.aqi-severe {
  color: var(--danger-color);
}

.no-data {
  text-align: center;
  padding: 1rem;
  color: var(--text-secondary);
  font-style: italic;
}

.sensor-actions {
  margin-top: 1rem;
}

.select-button {
  width: 100%;
  background: var(--primary-color);
  color: var(--text-inverse);
  border: none;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.select-button:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}

.sensor-select-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin-top: auto;
}

.logout-button {
  background: transparent;
  color: var(--danger-color);
  border: 1px solid var(--danger-color);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.logout-button:hover {
  background: var(--danger-color);
  color: var(--text-inverse);
}

.loading-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem;
  color: var(--text-secondary);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.no-sensors {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}

.no-sensors-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.no-sensors h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.error-message {
  text-align: center;
  padding: 3rem;
  color: var(--danger-color);
}

.error-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.retry-button {
  background: var(--primary-color);
  color: var(--text-inverse);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 1rem;
  transition: all 0.3s ease;
}

.retry-button:hover {
  background: var(--primary-light);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}