/* ========================================
   RED HAT SOVEREIGN UI - KUBERNETES COST EXPLORER
   Enterprise-grade design system
   ======================================== */

/* ==================== ROOT VARIABLES ==================== */
:root {
  /* Red Hat Brand Colors */
  --rh-red: #EE0000;
  --rh-red-dark: #CC0000;
  --rh-red-darker: #A30000;
  --rh-black: #111111;
  --rh-gray-90: #1A1C1C;
  --rh-gray-80: #212427;
  --rh-gray-70: #2E3236;
  --rh-gray-60: #3C4146;
  --rh-gray-50: #4F5255;
  --rh-gray-40: #6A6E73;
  --rh-gray-30: #8A8D90;
  --rh-gray-20: #C7C9CA;
  --rh-gray-10: #D2D3D5;
  --rh-white: #FFFFFF;

  /* PatternFly Accents */
  --pf-blue: #0066CC;
  --pf-cyan: #009596;
  --pf-green: #3E8635;
  --pf-orange: #EC7A08;
  --pf-gold: #F0AB00;
  --pf-purple: #8461C9;

  /* Light Theme */
  --bg-primary: #F5F5F5;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #FAFAFA;
  --text-primary: #111111;
  --text-secondary: #4F5255;
  --text-tertiary: #6A6E73;
  --border-color: #D2D3D5;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.20);

  /* Typography */
  --font-display: 'Red Hat Display', sans-serif;
  --font-text: 'Red Hat Text', sans-serif;
  --font-mono: 'Red Hat Mono', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0B0C0C;
  --bg-secondary: #1A1C1C;
  --bg-tertiary: #212427;
  --text-primary: #FFFFFF;
  --text-secondary: #C7C9CA;
  --text-tertiary: #8A8D90;
  --border-color: #3C4146;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.7);
}

/* ==================== GLOBAL RESET ==================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-text);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

/* ==================== SOVEREIGN HEADER ==================== */
.sovereign-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  animation: slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.sovereign-header-content {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

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

.sovereign-logo {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: transform var(--transition-base);
}

[data-theme="light"] .sovereign-logo {
  filter: brightness(0);
}

.sovereign-logo:hover {
  transform: scale(1.05);
}

.sovereign-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.sovereign-subtitle {
  font-family: var(--font-text);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-left: var(--space-md);
  padding-left: var(--space-md);
  border-left: 1px solid var(--border-color);
}

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

.sovereign-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pf-green);
  box-shadow: 0 0 8px var(--pf-green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.sovereign-status.demo .status-indicator {
  background: var(--pf-gold);
  box-shadow: 0 0 8px var(--pf-gold);
}

.sovereign-theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sovereign-theme-toggle:hover {
  background: var(--bg-tertiary);
  border-color: var(--rh-red);
  transform: rotate(15deg);
}

.theme-icon {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

/* ==================== DEMO ALERT ==================== */
.sovereign-demo-alert {
  background: linear-gradient(135deg, var(--pf-gold) 0%, var(--pf-orange) 100%);
  color: var(--rh-black);
  padding: var(--space-md) var(--space-xl);
  animation: slideDown 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.demo-alert-content {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-weight: 500;
}

.demo-alert-icon {
  width: 24px;
  height: 24px;
  stroke-width: 2;
  flex-shrink: 0;
}

/* ==================== MAIN CONTENT ==================== */
.sovereign-main {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
  animation: fadeIn 0.6s ease-out;
}

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

/* ==================== KPI BELT ==================== */
.kpi-belt {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  cursor: default;
  position: relative;
  overflow: hidden;
  animation: scaleIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.kpi-card:nth-child(1) { animation-delay: 0.05s; }
.kpi-card:nth-child(2) { animation-delay: 0.1s; }
.kpi-card:nth-child(3) { animation-delay: 0.15s; }
.kpi-card:nth-child(4) { animation-delay: 0.2s; }
.kpi-card:nth-child(5) { animation-delay: 0.25s; }

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

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

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

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

.kpi-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.info-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-tertiary);
  padding: var(--space-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  border-radius: 4px;
}

.info-btn:hover {
  color: var(--rh-red);
  background: var(--bg-tertiary);
}

.info-icon {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

.kpi-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.kpi-value-sm {
  font-size: 1.5rem;
}

.kpi-trend {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.trend-indicator {
  font-weight: 600;
  color: var(--pf-green);
}

/* ==================== SECTION ==================== */
.sovereign-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  animation: fadeIn 0.6s ease-out 0.3s backwards;
}

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

.section-header-content {
  flex: 1;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.section-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

.section-actions {
  display: flex;
  gap: var(--space-md);
}

/* ==================== BUTTONS ==================== */
.sovereign-btn {
  font-family: var(--font-text);
  font-size: 0.875rem;
  font-weight: 600;
  padding: var(--space-sm) var(--space-lg);
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  position: relative;
  overflow: hidden;
}

.sovereign-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width var(--transition-fast), height var(--transition-fast);
}

.sovereign-btn:active::before {
  width: 300px;
  height: 300px;
}

.sovereign-btn-primary {
  background: var(--rh-red);
  color: var(--rh-white);
}

.sovereign-btn-primary:hover {
  background: var(--rh-red-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-icon {
  width: 16px;
  height: 16px;
  stroke-width: 2;
}

/* ==================== TABLE ==================== */
.sovereign-table-container {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.sovereign-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.sovereign-table thead {
  background: var(--bg-tertiary);
  border-bottom: 2px solid var(--border-color);
}

.sovereign-table th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.sovereign-table tbody tr {
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-fast);
}

.sovereign-table tbody tr:hover {
  background: var(--bg-tertiary);
}

.sovereign-table tbody tr:last-child {
  border-bottom: none;
}

.sovereign-table td {
  padding: var(--space-md) var(--space-lg);
  color: var(--text-primary);
}

.table-loading {
  text-align: center;
  color: var(--text-tertiary);
}

.table-loading td {
  padding: var(--space-2xl);
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--rh-red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--space-md);
}

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

.namespace-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-tertiary);
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: var(--font-mono);
}

.cost-value {
  font-family: var(--font-mono);
  font-weight: 600;
}

.cost-high {
  color: var(--rh-red);
}

.cost-medium {
  color: var(--pf-orange);
}

.cost-low {
  color: var(--pf-green);
}

/* ==================== CHARTS SECTION ==================== */
.charts-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.chart-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  animation: fadeIn 0.6s ease-out 0.4s backwards;
}

.chart-card-wide {
  grid-column: 1 / -1;
}

.chart-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.chart-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.chart-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

.chart-body {
  position: relative;
  height: 300px;
}

/* ==================== DRAWER ==================== */
.sovereign-drawer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sovereign-drawer.active {
  pointer-events: all;
  opacity: 1;
}

.drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sovereign-drawer.active .drawer-backdrop {
  opacity: 1;
}

.drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 800px;
  background: var(--bg-secondary);
  box-shadow: var(--shadow-xl);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
}

.sovereign-drawer.active .drawer-panel {
  transform: translateX(0);
}

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

.drawer-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.drawer-close {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer-close:hover {
  background: var(--bg-primary);
  border-color: var(--rh-red);
  transform: rotate(90deg);
}

.drawer-close svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xl);
}

.pod-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-lg);
}

.pod-table th {
  background: var(--bg-tertiary);
  padding: var(--space-md);
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
}

.pod-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

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

.pod-name {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--pf-cyan);
}

.pod-status {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.pod-status-running {
  background: rgba(62, 134, 53, 0.2);
  color: var(--pf-green);
}

/* ==================== FOOTER ==================== */
.sovereign-footer {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-tertiary);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
}

.sovereign-footer strong {
  color: var(--rh-red);
  font-weight: 600;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1200px) {
  .kpi-belt {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

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

@media (max-width: 768px) {
  .sovereign-header-content {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-md);
  }

  .sovereign-title {
    font-size: 1.25rem;
  }

  .sovereign-main {
    padding: var(--space-lg) var(--space-md);
  }

  .kpi-belt {
    grid-template-columns: 1fr;
  }

  .kpi-value {
    font-size: 2rem;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .drawer-panel {
    max-width: 100%;
  }

  .sovereign-table {
    font-size: 0.875rem;
  }

  .sovereign-table th,
  .sovereign-table td {
    padding: var(--space-sm) var(--space-md);
  }
}

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

:focus-visible {
  outline: 2px solid var(--rh-red);
  outline-offset: 2px;
}

/* ==================== UTILITIES ==================== */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

/* ==================== TOOLTIP ==================== */
.tooltip {
  position: fixed;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  line-height: 1.4;
  max-width: 300px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
}

.tooltip.show {
  opacity: 1;
  transform: translateY(0);
}

.tooltip::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid var(--border-color);
}

.tooltip::after {
  content: '';
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 5px solid var(--bg-secondary);
}