/* HD Hydrogen Dashboard - Enhanced Styles v2.0 */
/* 다크모드 + 고급 애니메이션 + 마이크로인터랙션 */

:root {
  /* Primary Colors - HD현대 블루 */
  --hd-primary: #0066B3;
  --hd-primary-dark: #004A82;
  --hd-primary-light: #3388C7;
  --hd-primary-rgb: 0, 102, 179;

  /* Secondary Colors - 수소/친환경 그린 */
  --hd-green: #00A651;
  --hd-green-dark: #007A3D;
  --hd-green-light: #4DC47D;
  --hd-green-rgb: 0, 166, 81;

  /* Status Colors */
  --status-success: #00A651;
  --status-warning: #F5A623;
  --status-danger: #E53935;
  --status-info: #2196F3;
  --status-neutral: #9E9E9E;

  /* Dark Theme (Default) */
  --bg-primary: #0D1117;
  --bg-secondary: #161B22;
  --bg-tertiary: #21262D;
  --bg-dark: #010409;
  --bg-card: #161B22;
  --bg-hover: rgba(0, 102, 179, 0.15);

  /* Text Colors */
  --text-primary: #F0F6FC;
  --text-secondary: #8B949E;
  --text-muted: #6E7681;
  --text-white: #FFFFFF;
  --text-inverse: #1A1A2E;

  /* Sidebar Colors (Dark default) */
  --sidebar-bg: linear-gradient(180deg, #010409 0%, #0D1117 100%);
  --sidebar-text: rgba(255, 255, 255, 0.6);
  --sidebar-text-active: #FFFFFF;
  --sidebar-border: rgba(255, 255, 255, 0.08);

  /* Border & Shadow */
  --border-color: #30363D;
  --border-light: rgba(255, 255, 255, 0.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(0, 102, 179, 0.3);

  /* Glassmorphism */
  --glass-bg: rgba(22, 27, 34, 0.8);
  --glass-border: rgba(48, 54, 61, 0.5);
  --glass-blur: 10px;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Font */
  --font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #F5F7FA;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #EDF0F4;
  --bg-dark: #1A1A2E;
  --bg-card: #FFFFFF;
  --bg-hover: rgba(0, 102, 179, 0.05);

  --text-primary: #1A1A2E;
  --text-secondary: #5A5A6E;
  --text-muted: #9E9E9E;
  --text-inverse: #FFFFFF;

  /* Sidebar Colors (Light mode) */
  --sidebar-bg: linear-gradient(180deg, #FFFFFF 0%, #F5F7FA 100%);
  --sidebar-text: #5A5A6E;
  --sidebar-text-active: #1A1A2E;
  --sidebar-border: #E0E4E8;

  --border-color: #E0E4E8;
  --border-light: rgba(0, 0, 0, 0.05);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 20px rgba(0, 102, 179, 0.15);

  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 14px;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

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

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

/* ==================== SIDEBAR ==================== */
.sidebar {
  width: 260px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text-active);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
  border-right: 1px solid var(--sidebar-border);
  transition: width var(--transition-normal), background var(--transition-normal);
}

.sidebar.collapsed {
  width: 72px;
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--sidebar-border);
  margin-bottom: var(--spacing-lg);
}

.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  transition: opacity var(--transition-normal), width var(--transition-normal);
}

.logo-text .logo-hd {
  color: var(--hd-green);
}

.logo-text .logo-hydrogen {
  color: var(--text-primary);
}

/* Navigation */
.nav-menu {
  list-style: none;
  flex: 1;
  overflow-y: auto;
}

.nav-item {
  margin-bottom: var(--spacing-xs);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  color: var(--sidebar-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--hd-green);
  border-radius: 0 3px 3px 0;
  transition: height var(--transition-fast);
}

.nav-link:hover {
  background: var(--bg-hover);
  color: var(--sidebar-text-active);
}

.nav-link:hover::before {
  height: 60%;
}

.nav-link.active {
  background: linear-gradient(90deg, rgba(var(--hd-primary-rgb), 0.2) 0%, transparent 100%);
  color: var(--sidebar-text-active);
}

.nav-link.active::before {
  height: 60%;
  background: var(--hd-primary);
}

.nav-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-icon svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

.nav-text {
  font-size: 14px;
  font-weight: 500;
  transition: opacity var(--transition-normal);
}

/* Sidebar Footer */
.sidebar-footer {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--sidebar-border);
}

/* ==================== COLLAPSIBLE MENU GROUPS ==================== */
.nav-group {
  margin-bottom: var(--spacing-sm);
}

.nav-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--sidebar-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--radius-md);
}

.nav-group-header .header-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-group-header .header-icon {
  width: 20px;
  height: 20px;
  color: var(--sidebar-text);
}

.nav-group-header .header-icon svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

.nav-group-header:hover {
  background: var(--bg-hover);
  color: var(--sidebar-text-active);
}

.nav-group-header .group-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.nav-group.collapsed .nav-group-header .group-icon {
  transform: rotate(-90deg);
}

.nav-group-items {
  overflow: hidden;
  max-height: 500px;
  transition: max-height var(--transition-normal);
  padding-left: var(--spacing-sm);
}

.nav-group.collapsed .nav-group-items {
  max-height: 0;
}

.nav-group-items .nav-link {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 13px;
}

.nav-group-items .nav-icon {
  width: 18px;
  height: 18px;
}

.nav-group-items .nav-icon svg {
  width: 16px;
  height: 16px;
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 0 var(--spacing-xl) var(--spacing-xl) var(--spacing-xl);
  transition: margin-left var(--transition-normal);
  min-height: 100vh;
  max-height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar.collapsed ~ .main-content {
  margin-left: 72px;
}

/* ==================== HEADER ==================== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  padding: var(--spacing-lg) var(--spacing-xl);
  margin: 0 calc(-1 * var(--spacing-xl)) var(--spacing-xl) calc(-1 * var(--spacing-xl));
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.page-header-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--accent-primary);
}

.breadcrumb .separator {
  color: var(--text-muted);
}

.breadcrumb .current {
  color: var(--text-primary);
  font-weight: 500;
}

.page-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

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

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  border-color: var(--hd-primary);
  color: var(--hd-primary);
  box-shadow: var(--shadow-md);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: all var(--transition-normal);
}

/* Dark mode (default) - show sun icon */
.theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg);
}

.theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg);
}

/* Light mode - show moon icon */
[data-theme="light"] .theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="light"] .theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg);
}

/* Header Buttons */
.header-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  position: relative;
}

.header-btn svg {
  width: 20px;
  height: 20px;
}

.header-btn:hover {
  border-color: var(--hd-primary);
  color: var(--hd-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.header-btn.has-notification::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 8px;
  height: 8px;
  background: var(--status-danger);
  border-radius: 50%;
  border: 2px solid var(--bg-card);
  animation: notification-pulse 2s infinite;
}

@keyframes notification-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* User Profile */
.user-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-profile:hover {
  border-color: var(--hd-primary);
  box-shadow: var(--shadow-md);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--hd-primary) 0%, var(--hd-green) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 13px;
}

.user-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

/* ==================== KPI CARDS ==================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.kpi-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  min-height: 180px;
  max-height: 200px;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--hd-primary), var(--hd-green));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

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

.kpi-card:hover::before {
  transform: scaleX(1);
}

.kpi-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.kpi-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.kpi-icon svg {
  width: 22px;
  height: 22px;
}

.kpi-icon.production {
  background: rgba(var(--hd-primary-rgb), 0.1);
  color: var(--hd-primary);
}

.kpi-icon.consumption {
  background: rgba(245, 166, 35, 0.1);
  color: var(--status-warning);
}

.kpi-icon.efficiency {
  background: rgba(var(--hd-green-rgb), 0.1);
  color: var(--hd-green);
}

.kpi-icon.carbon {
  background: rgba(76, 175, 80, 0.1);
  color: #4CAF50;
}

.kpi-icon.revenue {
  background: rgba(156, 39, 176, 0.1);
  color: #9C27B0;
}

.kpi-card:hover .kpi-icon {
  transform: scale(1.1);
}

.kpi-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.kpi-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.2;
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.kpi-value .unit {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.kpi-change {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.kpi-change.positive {
  background: rgba(var(--hd-green-rgb), 0.1);
  color: var(--status-success);
}

.kpi-change.negative {
  background: rgba(229, 57, 53, 0.1);
  color: var(--status-danger);
}

.kpi-change svg {
  width: 14px;
  height: 14px;
}

/* Sparkline */
.kpi-sparkline {
  height: 40px !important;
  max-height: 40px !important;
  width: 100% !important;
  margin-top: var(--spacing-md);
  opacity: 0.7;
}

/* ==================== CARDS ==================== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-tertiary);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card-title svg {
  width: 20px;
  height: 20px;
  color: var(--hd-primary);
}

.card-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card-body {
  padding: var(--spacing-lg);
  overflow: hidden;
}

/* ==================== DASHBOARD GRID ==================== */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.dashboard-grid > .card {
  max-height: 400px;
  overflow: hidden;
}

/* ==================== CHART CONTAINER ==================== */
.chart-container {
  height: 280px;
  max-height: 280px;
  position: relative;
  padding: var(--spacing-sm);
  overflow: hidden;
}

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

.chart-legend {
  display: flex;
  gap: var(--spacing-lg);
  font-size: 13px;
  color: var(--text-secondary);
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.chart-legend-color {
  width: 12px;
  height: 3px;
  border-radius: 2px;
}

/* Live Indicator */
.live-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--status-success);
  padding: 4px 10px;
  background: rgba(var(--hd-green-rgb), 0.1);
  border-radius: var(--radius-full);
}

.live-dot {
  width: 8px;
  height: 8px;
  background: var(--status-success);
  border-radius: 50%;
  animation: live-pulse 1.5s ease-in-out infinite;
}

@keyframes live-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* ==================== ALERTS ==================== */
.alerts-list {
  height: 280px;
  max-height: 280px;
  overflow-y: auto;
  padding-right: var(--spacing-sm);
}

.alert-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  background: var(--bg-tertiary);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.alert-item:hover {
  background: var(--bg-hover);
  border-color: var(--hd-primary);
  transform: translateX(4px);
}

.alert-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.alert-icon svg {
  width: 18px;
  height: 18px;
}

.alert-icon.critical {
  background: rgba(229, 57, 53, 0.1);
  color: var(--status-danger);
}

.alert-icon.warning {
  background: rgba(245, 166, 35, 0.1);
  color: var(--status-warning);
}

.alert-icon.info {
  background: rgba(var(--hd-green-rgb), 0.1);
  color: var(--status-success);
}

.alert-content {
  flex: 1;
  min-width: 0;
}

.alert-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.alert-time {
  font-size: 12px;
  color: var(--text-muted);
}

.alert-actions {
  display: flex;
  gap: var(--spacing-xs);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.alert-item:hover .alert-actions {
  opacity: 1;
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--hd-primary) 0%, var(--hd-primary-light) 100%);
  color: var(--text-white);
  box-shadow: 0 2px 8px rgba(var(--hd-primary-rgb), 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(var(--hd-primary-rgb), 0.4);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--hd-primary);
  color: var(--hd-primary);
}

.btn-success {
  background: linear-gradient(135deg, var(--hd-green) 0%, var(--hd-green-light) 100%);
  color: var(--text-white);
}

.btn-danger {
  background: linear-gradient(135deg, var(--status-danger) 0%, #FF5252 100%);
  color: var(--text-white);
}

/* ==================== EQUIPMENT GRID ==================== */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.equipment-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal);
  border: 2px solid var(--border-color);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.equipment-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(var(--hd-primary-rgb), 0.03) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.equipment-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.equipment-card:hover::after {
  opacity: 1;
}

.equipment-card.status-running {
  border-color: var(--status-success);
}

.equipment-card.status-maintenance {
  border-color: var(--status-warning);
}

.equipment-card.status-stopped {
  border-color: var(--status-danger);
  animation: stopped-pulse 2s infinite;
}

@keyframes stopped-pulse {
  0%, 100% { border-color: var(--status-danger); }
  50% { border-color: rgba(229, 57, 53, 0.3); }
}

.equipment-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.equipment-status {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.equipment-status.running {
  background: rgba(var(--hd-green-rgb), 0.1);
  color: var(--status-success);
}

.equipment-status.maintenance {
  background: rgba(245, 166, 35, 0.1);
  color: var(--status-warning);
}

.equipment-status.stopped {
  background: rgba(229, 57, 53, 0.1);
  color: var(--status-danger);
}

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

.status-dot.running { background: var(--status-success); }
.status-dot.maintenance { background: var(--status-warning); }
.status-dot.stopped {
  background: var(--status-danger);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.equipment-efficiency {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.equipment-efficiency-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* ==================== MODAL ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

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

.modal-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: none;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--status-danger);
  color: white;
}

.modal-body {
  padding: var(--spacing-lg);
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  background: var(--bg-tertiary);
}

/* ==================== TOOLTIP ==================== */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 12px;
  background: var(--bg-dark);
  color: var(--text-white);
  font-size: 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 100;
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ==================== LOADING ==================== */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-hover) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1400px) {
  .kpi-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 1200px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    width: 72px;
  }

  .sidebar .logo-text,
  .sidebar .nav-text {
    display: none;
  }

  .main-content {
    margin-left: 72px;
    padding: var(--spacing-md);
  }

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

  .header {
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }

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

/* ==================== THREE COLUMN GRID ==================== */
.dashboard-grid.three-col {
  grid-template-columns: repeat(3, 1fr);
}

/* ==================== HYDROGEN STORAGE STATUS ==================== */
.storage-status {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.storage-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.storage-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.storage-bar-container {
  height: 24px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.storage-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--hd-primary), var(--hd-green));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--spacing-sm);
  transition: width var(--transition-normal);
}

.storage-value {
  font-size: 12px;
  font-weight: 600;
  color: white;
}

.storage-info {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

.storage-pressure {
  font-weight: 500;
  color: var(--hd-primary);
}

/* ==================== BOP SYSTEM STATUS ==================== */
.bop-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.bop-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  transition: all var(--transition-fast);
}

.bop-item:hover {
  transform: translateX(4px);
}

.bop-item svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.bop-item.status-normal {
  border-left: 3px solid var(--status-success);
}

.bop-item.status-normal svg {
  color: var(--status-success);
}

.bop-item.status-warning {
  border-left: 3px solid var(--status-warning);
  background: rgba(245, 166, 35, 0.05);
}

.bop-item.status-warning svg {
  color: var(--status-warning);
}

.bop-item.status-error {
  border-left: 3px solid var(--status-danger);
  background: rgba(229, 57, 53, 0.05);
}

.bop-item.status-error svg {
  color: var(--status-danger);
}

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

.bop-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.bop-status {
  font-size: 12px;
  color: var(--text-muted);
}

.bop-item.status-warning .bop-status {
  color: var(--status-warning);
}

/* ==================== GRID CONNECTION STATUS ==================== */
.grid-status {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.grid-main {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(var(--hd-green-rgb), 0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(var(--hd-green-rgb), 0.2);
}

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

.grid-icon.connected {
  background: rgba(var(--hd-green-rgb), 0.15);
  color: var(--status-success);
}

.grid-icon.disconnected {
  background: rgba(229, 57, 53, 0.15);
  color: var(--status-danger);
}

.grid-icon svg {
  width: 24px;
  height: 24px;
}

.grid-info {
  display: flex;
  flex-direction: column;
}

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

.grid-value {
  font-size: 16px;
  font-weight: 600;
}

.grid-value.connected {
  color: var(--status-success);
}

.grid-value.disconnected {
  color: var(--status-danger);
}

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

.grid-metric {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

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

.grid-metric .metric-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==================== SOFC CARD STYLES ==================== */
.equipment-card.sofc-card {
  text-align: left;
  padding: var(--spacing-lg);
}

.equipment-card.sofc-card .equipment-header {
  margin-bottom: var(--spacing-md);
}

.equipment-card.sofc-card .equipment-name {
  font-size: 16px;
  margin-bottom: 4px;
}

.equipment-card.sofc-card .equipment-location {
  font-size: 12px;
  color: var(--text-muted);
}

.equipment-card.status-warning {
  border-color: var(--status-warning);
}

.equipment-status.warning {
  background: rgba(245, 166, 35, 0.1);
  color: var(--status-warning);
}

.status-dot.warning {
  background: var(--status-warning);
}

.sofc-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.sofc-metric {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.sofc-metric .metric-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--hd-primary);
}

.sofc-metric .metric-icon svg {
  width: 16px;
  height: 16px;
}

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

.sofc-metric .metric-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.sofc-metric .metric-label {
  font-size: 10px;
  color: var(--text-muted);
}

.equipment-alert {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(245, 166, 35, 0.1);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--status-warning);
}

.equipment-alert svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* Neutral change */
.kpi-change.neutral {
  background: rgba(158, 158, 158, 0.1);
  color: var(--status-neutral);
}

/* ==================== RESPONSIVE FOR NEW SECTIONS ==================== */
@media (max-width: 1200px) {
  .dashboard-grid.three-col {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 768px) {
  .dashboard-grid.three-col {
    grid-template-columns: 1fr;
  }

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

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

/* ==================== SOFC STACK STATUS ==================== */
.stack-status {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.stack-item {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-fast);
}

.stack-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

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

.stack-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.stack-badge {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
}

.stack-badge.normal {
  background: rgba(var(--hd-green-rgb), 0.1);
  color: var(--status-success);
}

.stack-badge.warning {
  background: rgba(245, 166, 35, 0.1);
  color: var(--status-warning);
}

.stack-badge.critical {
  background: rgba(229, 57, 53, 0.1);
  color: var(--status-danger);
}

.stack-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
}

.stack-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-sm);
  background: var(--bg-card);
  border-radius: var(--radius-sm);
}

.stack-metric svg {
  width: 16px;
  height: 16px;
  color: var(--hd-primary);
}

.stack-metric .metric-name {
  font-size: 11px;
  color: var(--text-muted);
}

.stack-metric .metric-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==================== FUEL TYPE BADGE ==================== */
.fuel-type-badge {
  display: inline-block;
  padding: 3px 8px;
  background: rgba(var(--hd-primary-rgb), 0.1);
  color: var(--hd-primary);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  margin-top: var(--spacing-xs);
}

/* ==================== PRINT STYLES ==================== */
@media print {
  .sidebar,
  .header-actions,
  .modal-overlay {
    display: none !important;
  }

  .main-content {
    margin-left: 0 !important;
    padding: 0 !important;
  }

  .card {
    break-inside: avoid;
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }

  body {
    background: white !important;
    color: black !important;
  }
}