:root[data-theme="dark"] {
  --bg: #0b0f17;
  --bg-alt: #111827;
  --surface: #161f30;
  --surface-hover: #1e293b;
  --border: #26334d;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --accent-glow: rgba(56, 189, 248, 0.16);
  --green: #22c55e;
  --amber: #f59e0b;
  --terminal-bg: #090d14;
  --shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.55);
}

:root[data-theme="light"] {
  --bg: #f8fafc;
  --bg-alt: #f1f5f9;
  --surface: #ffffff;
  --surface-hover: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #475569;
  --accent: #0284c7;
  --accent-strong: #0369a1;
  --accent-glow: rgba(2, 132, 199, 0.12);
  --green: #16a34a;
  --amber: #d97706;
  --terminal-bg: #0f172a;
  --shadow: 0 15px 30px -10px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.mono {
  font-family: 'JetBrains Mono', monospace;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Status Bar */
.status-bar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
  padding: 0.45rem 0;
  color: var(--text-muted);
}

.status-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.status-left {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--green);
  box-shadow: 0 0 10px var(--green);
  display: inline-block;
}

.divider {
  margin: 0 0.5rem;
  opacity: 0.4;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-prompt {
  color: var(--green);
  margin-right: 0.2rem;
}

.brand-accent {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
}

.icon-btn:hover {
  border-color: var(--accent);
}

:root[data-theme="dark"] .moon-icon {
  display: none;
}
:root[data-theme="light"] .sun-icon {
  display: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.92rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-sm {
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.9rem 1.5rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--accent);
  color: #061320;
}

:root[data-theme="light"] .btn-primary {
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-strong);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--accent);
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

.btn-ghost:hover {
  text-decoration: underline;
}

/* Hero */
.hero {
  padding: 4.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.pill {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.pill-accent {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.1rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), #34d399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.06rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  max-width: 60ch;
}

.hero-lead strong {
  color: var(--text);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 2.25rem;
}

.quick-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.metric-val {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Terminal Card */
.terminal-card {
  background: var(--terminal-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  color: #e2e8f0;
}

.terminal-header {
  background: #161f30;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #26334d;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #22c55e; }

.terminal-title {
  font-size: 0.76rem;
  color: #94a3b8;
}

.terminal-body {
  padding: 1.2rem;
  font-size: 0.82rem;
  line-height: 1.65;
}

.cmd-line {
  margin-top: 0.75rem;
}
.cmd-line:first-child {
  margin-top: 0;
}

.prompt {
  color: #38bdf8;
  font-weight: 600;
}

.cmd {
  color: #f8fafc;
}

.cmd-output {
  margin: 0.35rem 0 0.85rem;
  padding-left: 0.65rem;
  border-left: 2px solid #26334d;
  color: #cbd5e1;
}

.key {
  color: #94a3b8;
}

.ok {
  color: #22c55e;
  font-weight: 600;
}

.cursor {
  display: inline-block;
  margin-left: 4px;
  color: #38bdf8;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  max-width: 680px;
  margin-bottom: 2.75rem;
}

.section-tag {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 0.4rem;
}

.section-header h2 {
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.section-header p {
  color: var(--text-muted);
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.2s, border-color 0.2s;
}

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

.skill-icon {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
}

.skill-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.45rem;
}

.skill-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag-cloud span {
  font-size: 0.76rem;
  font-family: 'JetBrains Mono', monospace;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  padding-left: 1.5rem;
  border-left: 2px solid var(--border);
}

.timeline-item {
  position: relative;
}

.timeline-marker {
  position: absolute;
  left: -1.95rem;
  top: 1.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-alt);
}

.timeline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.6rem;
}

.timeline-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.timeline-top h3 {
  font-size: 1.15rem;
}

.company {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  margin-top: 0.15rem;
}

.badge-inline {
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: 99px;
  background: var(--accent-glow);
  color: var(--accent);
  margin-left: 0.4rem;
}

.date {
  font-size: 0.82rem;
  color: var(--accent);
  background: var(--bg-alt);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.impact-list {
  padding-left: 1.2rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.95rem;
}

.impact-list strong {
  color: var(--text);
}

/* Homelab Showcase */
.lab-showcase {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 1.5rem;
}

.lab-diagram-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.6rem;
}

.card-label {
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.topology-grid {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.topo-node {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.15rem;
}

.topo-host {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.topo-title, .node-tag {
  font-size: 0.72rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}

.topo-node h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.topo-node p {
  font-size: 0.86rem;
  color: var(--text-muted);
}

.topo-arrow {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0.15rem 0;
}

.topo-children {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.lab-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.highlight-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
}

.highlight-box h4 {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.highlight-box p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.check-list li::before {
  content: "✓ ";
  color: var(--green);
  font-weight: 700;
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
}

.cert-featured {
  border-color: var(--accent);
}

.cert-status {
  font-size: 0.72rem;
  color: var(--green);
  margin-bottom: 0.4rem;
}

.cert-status.in-progress {
  color: var(--amber);
}

.cert-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.45rem;
}

.cert-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Contact */
.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.contact-text {
  max-width: 600px;
}

.contact-text h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: 0.65rem;
}

.contact-text p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.contact-details {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.88rem;
}

.contact-details a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 920px) {
  .hero-grid,
  .lab-showcase {
    grid-template-columns: 1fr;
  }
  .topo-children {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}