/* ==========================================================================
   DevOps Dashboard Theme — Dark Mode
   ========================================================================== */

:root {
  --color-bg: #0a0a0f;
  --color-surface: #12131a;
  --color-surface-hover: #1a1b24;
  --color-border: #1e2030;
  --color-border-hover: #2a2d42;

  --color-text: #e4e4e7;
  --color-text-muted: #8b8d9e;
  --color-text-dim: #5a5c6e;

  --color-primary: #3b82f6;
  --color-primary-dim: rgba(59, 130, 246, 0.15);
  --color-accent: #7c5cfc;
  --color-accent-dim: rgba(124, 92, 252, 0.15);
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-success: #10b981;

  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Cascadia Code', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

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

/* Reset */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ==========================================================================
   Header
   ========================================================================== */

.dashboard-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background-color: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

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

.terminal-prompt {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
}

.header-role {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

.lang-switch {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  transition: all 0.2s;
}

.lang-switch:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  text-decoration: none;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--color-success);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ==========================================================================
   Dashboard Layout
   ========================================================================== */

.dashboard {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* ==========================================================================
   Metrics Row
   ========================================================================== */

.metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

.metric-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: border-color 0.2s;
}

.metric-card:hover {
  border-color: var(--color-border-hover);
}

.metric-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.metric-value.status-online {
  color: var(--color-success);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
}

.metric-number {
  font-size: 2rem;
  color: var(--color-text);
}

/* ==========================================================================
   Panels
   ========================================================================== */

.dashboard-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color 0.2s;
}

.dashboard-panel:hover {
  border-color: var(--color-border-hover);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.panel-title svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ==========================================================================
   Stack Grid
   ========================================================================== */

.stack-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.stack-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  align-items: center;
  gap: var(--space-md);
}

.stack-name {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text);
}

.stack-bar {
  height: 6px;
  background-color: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.stack-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s ease;
}

.proficient .stack-fill {
  background: linear-gradient(90deg, var(--color-primary), #60a5fa);
}

.familiar .stack-fill {
  background: linear-gradient(90deg, var(--color-accent), #a78bfa);
}

/* ==========================================================================
   Timeline
   ========================================================================== */

.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  position: relative;
  padding-left: var(--space-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
}

.timeline-marker {
  position: absolute;
  left: calc(-1 * var(--space-xl) + 1px);
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-border);
  border: 2px solid var(--color-surface);
}

.timeline-marker.active {
  background-color: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary-dim);
}

.timeline-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.timeline-header h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  white-space: nowrap;
}

.timeline-client {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.timeline-details {
  list-style: none;
  padding: 0;
}

.timeline-details li {
  position: relative;
  padding-left: var(--space-md);
  margin-bottom: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.timeline-details li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-text-dim);
}

.timeline-details strong {
  color: var(--color-primary);
}

/* ==========================================================================
   Architecture Diagram
   ========================================================================== */

.arch-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  background-color: var(--color-primary-dim);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.arch-toggle:hover {
  background-color: rgba(59, 130, 246, 0.2);
  border-color: var(--color-primary);
}

.arch-chevron {
  transition: transform 0.3s ease;
}

.arch-toggle[aria-expanded="true"] .arch-chevron {
  transform: rotate(180deg);
}

.arch-container {
  margin-top: var(--space-lg);
  animation: slideDown 0.3s ease;
}

.arch-container[hidden] {
  display: none;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.arch-diagram {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.arch-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.arch-description {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  line-height: 1.5;
}

.arch-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.arch-layer {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

.arch-layer-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
  margin-bottom: var(--space-sm);
}

.arch-nodes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.arch-node {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid;
}

.arch-node.channel {
  color: #60a5fa;
  background-color: rgba(96, 165, 250, 0.08);
  border-color: rgba(96, 165, 250, 0.25);
}

.arch-node.gateway {
  color: #f59e0b;
  background-color: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.25);
}

.arch-node.processing {
  color: var(--color-primary);
  background-color: var(--color-primary-dim);
  border-color: rgba(59, 130, 246, 0.25);
}

.arch-node.streaming {
  color: #f97316;
  background-color: rgba(249, 115, 22, 0.08);
  border-color: rgba(249, 115, 22, 0.25);
}

.arch-node.infra {
  color: var(--color-accent);
  background-color: var(--color-accent-dim);
  border-color: rgba(124, 92, 252, 0.25);
}

.arch-icon {
  font-size: 0.875rem;
}

.arch-arrow {
  color: var(--color-text-dim);
  font-size: 0.75rem;
  padding: var(--space-xs) 0;
}

.arch-tech-summary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.arch-tech-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-text-muted);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Projects Grid
   ========================================================================== */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.project-card-dash {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color 0.2s, transform 0.2s;
}

.project-card-dash:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.project-status {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.project-status.deployed {
  color: var(--color-success);
}

.project-card-dash h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.oss-badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  background-color: var(--color-accent-dim);
  color: var(--color-accent);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  vertical-align: middle;
  margin-left: var(--space-xs);
}

.project-card-dash p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  line-height: 1.5;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  background-color: var(--color-primary-dim);
  color: var(--color-primary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.project-link:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   Education
   ========================================================================== */

.education-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.education-degree {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.education-curriculum {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s;
}

.contact-item:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.contact-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.contact-value {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text);
}

.contact-item:hover .contact-value {
  color: var(--color-primary);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.dashboard-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

.footer-uptime {
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  .dashboard-header {
    flex-direction: column;
    gap: var(--space-sm);
    align-items: flex-start;
    padding: var(--space-md);
  }

  .header-right {
    width: 100%;
    justify-content: space-between;
  }

  .dashboard {
    padding: var(--space-md);
    gap: var(--space-lg);
  }

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

  .stack-item {
    grid-template-columns: 110px 1fr;
  }

  .timeline-header {
    flex-direction: column;
  }

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

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

  .dashboard-footer {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

@media (max-width: 400px) {
  .metrics-row {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Focus Styles (Accessibility)
   ========================================================================== */

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}