/* ==========================================================================
   Tokens
   ========================================================================== */
:root {
  --paper: #F6F7F5;
  --panel: #FFFFFF;
  --ink: #10151B;
  --ink-soft: #454E56;
  --hairline: #E1E5E1;
  --signal: #0E7490;      /* status teal — link/route accent */
  --signal-dark: #0B5A70;
  --amber: #C77F2E;       /* metric / highlight accent */
  --dark-bg: #10151B;
  --dark-panel: #1A222B;
  --radius: 8px;

  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --max-w: 1120px;
}

/* ==========================================================================
   Reset / base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--paper);
  background-image:
    radial-gradient(rgba(14, 116, 144, 0.10) 1px, transparent 1px),
    linear-gradient(115deg, rgba(14, 116, 144, 0.05) 1px, transparent 1px),
    linear-gradient(25deg, rgba(14, 116, 144, 0.05) 1px, transparent 1px);
  background-size: 24px 24px, 64px 64px, 64px 64px;
  background-position: 0 0, 0 0, 0 0;
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

@media (max-width: 640px) {
  /* keep the texture very quiet on small screens so it never competes with text */
  body { background-image:
    radial-gradient(rgba(14, 116, 144, 0.05) 1px, transparent 1px);
    background-size: 22px 22px;
  }
}

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); margin: 0 0 0.4em; line-height: 1.15; }
h1 { font-size: clamp(2.2rem, 6vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 600; }
h3 { font-size: 1.05rem; font-weight: 600; }
p { margin: 0 0 1em; color: var(--ink-soft); }
a { color: var(--signal); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { padding: 0; margin: 0; list-style: none; }
img, svg { max-width: 100%; display: block; }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  z-index: 200;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--signal-dark);
  letter-spacing: 0.02em;
  margin: 0 0 0.9em;
}
.eyebrow-light { color: #7FD3E6; }

.section { padding: 72px 0; }
.section-alt {
  background-color: #EFF2EE;
  background-image:
    radial-gradient(rgba(14, 116, 144, 0.10) 1px, transparent 1px),
    linear-gradient(115deg, rgba(14, 116, 144, 0.05) 1px, transparent 1px),
    linear-gradient(25deg, rgba(14, 116, 144, 0.05) 1px, transparent 1px);
  background-size: 24px 24px, 64px 64px, 64px 64px;
}
.section-lede { max-width: 56ch; color: var(--ink-soft); }
.section-lede.light { color: #C7CDD3; }
.lede-inline { white-space: normal; }
@media (min-width: 620px) {
  .lede-inline { max-width: none; white-space: nowrap; }
}

/* Scroll-reveal: fades and lifts elements into place as they enter the viewport */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--signal); color: #fff; }
.btn-primary:hover { background: var(--signal-dark); }
.btn-ghost { background: transparent; border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn-text { background: none; color: var(--signal-dark); padding: 12px 6px; font-weight: 600; }
.btn-block { width: 100%; }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 247, 245, 0.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--hairline);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--signal); display: inline-flex; }

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 22px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.primary-nav {
  position: fixed;
  top: 66px;
  left: 0;
  right: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.primary-nav.open { max-height: 400px; }
.primary-nav ul { display: flex; flex-direction: column; padding: 8px 20px 20px; }
.primary-nav a {
  display: block;
  padding: 12px 0;
  color: var(--ink);
  font-weight: 500;
  border-bottom: 1px solid var(--hairline);
}
.primary-nav a:hover { color: var(--signal-dark); text-decoration: none; }
.nav-cta { color: var(--signal-dark) !important; font-weight: 600 !important; }

@media (min-width: 860px) {
  .nav-toggle { display: none; }
  .primary-nav {
    position: static;
    max-height: none;
    background: none;
    border: none;
  }
  .primary-nav ul { flex-direction: row; align-items: center; gap: 28px; padding: 0; }
  .primary-nav a { padding: 6px 0; border: none; font-size: 0.95rem; }
  .nav-cta {
    background: var(--ink);
    color: #fff !important;
    padding: 8px 16px !important;
    border-radius: 6px;
  }
  .nav-cta:hover { background: var(--signal-dark); }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { padding: 56px 0 64px; }
.hero-grid { display: grid; gap: 40px; }
.hero-role { font-family: var(--font-mono); font-size: 1.05rem; color: var(--ink); margin-bottom: 0.6em; }
.hero-tagline { max-width: 46ch; font-size: 1.05rem; }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--panel);
  border: 1px solid var(--hairline);
  padding: 8px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.status-pill .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #1F9D64;
  box-shadow: 0 0 0 0 rgba(31,157,100,0.5);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(31,157,100,0.45); }
  70% { box-shadow: 0 0 0 8px rgba(31,157,100,0); }
  100% { box-shadow: 0 0 0 0 rgba(31,157,100,0); }
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }

.cert-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.cert-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--signal);
  padding: 7px 12px;
  border-radius: 6px;
  text-decoration: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.cert-chip:hover { text-decoration: none; border-color: var(--signal); box-shadow: 0 2px 8px rgba(14,116,144,0.14); }
.cert-chip svg { width: 15px; height: 15px; flex-shrink: 0; fill: var(--signal); }

.badge-img { display: block; object-fit: contain; }
/* Cisco: personal-website usage must not exceed 43×38px, unaltered aspect ratio */
.badge-ccna { max-width: 43px; max-height: 38px; width: auto; height: auto; }
/* CompTIA: certification logos must not be smaller than 5/8in (~60px) per brand guidelines */
.badge-secplus { width: 60px; height: 60px; }

.badge-notice {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.5;
  color: var(--ink-soft);
  opacity: 0.75;
  max-width: 60ch;
  margin: -10px 0 26px;
}

.hero-meta {
  display: flex; flex-wrap: wrap; gap: 6px 18px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.hero-diagram { display: none; }

@media (min-width: 900px) {
  .hero-diagram { display: flex; flex-direction: column; align-items: center; }
}
.topology { width: 100%; max-width: 380px; }
.topology .links path { stroke: var(--hairline); stroke-width: 2; fill: none; }
.topology .node rect, .topology .node circle { fill: var(--panel); stroke: var(--ink); stroke-width: 1.4; }
.topology .node text { font-family: var(--font-mono); font-size: 10px; fill: var(--ink); text-anchor: middle; }
.topology .node-accent rect { fill: var(--signal); stroke: var(--signal-dark); }
.topology .node-accent text { fill: #fff; }
.topology .packet { fill: var(--amber); display: none; }

@media (min-width: 900px) {
  .topology .packet { display: block; }
}
.diagram-caption { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft); margin-top: 8px; display: none; }
.diagram-caption .up { color: #1F9D64; font-weight: 600; }

@media (min-width: 900px) {
  .diagram-caption { display: block; }
}

@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}

/* ==========================================================================
   About
   ========================================================================== */
.about-grid { display: grid; gap: 24px; }
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
}
.stat-num { display: block; font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--signal-dark); }
.stat-label { display: block; font-size: 0.8rem; color: var(--ink-soft); }

.learning-line {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.learning-line a { color: var(--signal-dark); font-weight: 500; }

@media (min-width: 780px) {
  .about-grid { grid-template-columns: 0.8fr 1.4fr; }
}

/* ==========================================================================
   Skills — "port panel"
   ========================================================================== */
.port-grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
  grid-template-columns: 1fr;
}
.port-card {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 3px solid var(--signal);
  border-radius: var(--radius);
  padding: 22px;
}
.port-list li {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  padding: 7px 0;
  border-bottom: 1px dashed var(--hairline);
  color: var(--ink-soft);
}
.port-list li:last-child { border-bottom: none; }

@media (min-width: 700px) { .port-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .port-grid { grid-template-columns: repeat(3, 1fr); } }

/* ==========================================================================
   Projects / case studies
   ========================================================================== */
.case-study {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 26px;
  margin-top: 28px;
}
.case-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 18px;
}
.repo-link { font-family: var(--font-mono); font-size: 0.82rem; }
.repo-link.muted { color: var(--ink-soft); }

.case-grid { display: grid; gap: 22px; }
.case-grid-single { grid-template-columns: 1fr; }

.case-diagram { background: var(--paper); border: 1px solid var(--hairline); border-radius: 6px; padding: 12px; display: flex; align-items: center; }
.case-diagram svg .node rect { fill: var(--panel); stroke: var(--ink); stroke-width: 1.3; }
.case-diagram svg .node.small rect { fill: #F0F4F3; }
.case-diagram svg .node text { font-family: var(--font-mono); font-size: 9px; fill: var(--ink); text-anchor: middle; }
.case-diagram svg path { stroke: var(--hairline); stroke-width: 2; fill: none; }
.case-diagram svg path.dashed { stroke: var(--signal); stroke-dasharray: 5 4; }
.case-diagram svg .link-label { font-family: var(--font-mono); font-size: 8px; fill: var(--ink-soft); }

.metric-list li {
  font-size: 0.92rem;
  padding: 6px 0;
  color: var(--ink-soft);
}
.metric-list strong { color: var(--signal-dark); font-family: var(--font-mono); }

.case-copy { font-size: 0.95rem; margin-top: 10px; }

details.steps {
  margin-top: 14px;
  border-top: 1px solid var(--hairline);
  padding-top: 12px;
}
details.steps summary {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--signal-dark);
  font-weight: 600;
}
details.steps ol { margin-top: 12px; padding-left: 20px; list-style: decimal; }
details.steps li { font-size: 0.9rem; color: var(--ink-soft); padding: 4px 0; }

@media (min-width: 780px) {
  .case-grid { grid-template-columns: 260px 1fr; align-items: start; }
}

.subgroup-heading {
  margin-top: 44px;
  margin-bottom: 4px;
  font-size: 0.95rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
  font-weight: 500;
}

.mini-grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  grid-template-columns: 1fr;
}
.mini-card {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.mini-card h4 { margin: 0 0 4px; font-family: var(--font-display); font-size: 0.98rem; font-weight: 600; color: var(--ink); }
.mini-meta { font-family: var(--font-mono); font-size: 0.76rem; color: var(--ink-soft); margin: 0 0 10px; }
.mini-card ul { margin-top: 8px; }
.mini-card li {
  font-size: 0.86rem;
  color: var(--ink-soft);
  padding: 4px 0;
  padding-left: 14px;
  position: relative;
}
.mini-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--signal);
}

@media (min-width: 780px) {
  .mini-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ==========================================================================
   Experience timeline
   ========================================================================== */
.timeline { position: relative; margin-top: 36px; padding-left: 28px; border-left: 2px solid var(--hairline); }
.timeline-item { position: relative; padding-bottom: 36px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -34px;
  top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--signal);
  border: 3px solid var(--paper);
  box-shadow: 0 0 0 2px var(--signal);
}
.timeline-date { font-family: var(--font-mono); font-size: 0.78rem; color: var(--signal-dark); margin-bottom: 4px; }
.timeline-org { font-size: 0.9rem; color: var(--ink-soft); font-style: italic; margin-bottom: 6px; }

/* ==========================================================================
   Certifications
   ========================================================================== */
.cert-grid {
  display: grid;
  gap: 14px;
  margin-top: 32px;
  grid-template-columns: 1fr;
}
.cert-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.cert-card:hover {
  text-decoration: none;
  border-color: var(--signal);
  box-shadow: 0 4px 14px rgba(14,116,144,0.12);
  transform: translateY(-1px);
}
.cert-card h3 { margin: 0; font-size: 0.95rem; color: var(--ink); }
.cert-card .badge-img { flex-shrink: 0; }
.badge-ccna-lg { max-width: 43px; max-height: 38px; width: auto; height: auto; }
.credly-link {
  flex-basis: 100%;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--signal-dark);
  margin-top: 2px;
}
.cert-badge {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--signal);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}
@media (min-width: 700px) { .cert-grid { grid-template-columns: repeat(2, 1fr); } }

.edu-list { margin-top: 20px; border-top: 1px solid var(--hairline); }
.edu-list li {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.95rem;
}
.edu-list li strong { font-family: var(--font-display); font-weight: 700; color: var(--ink); }
.edu-meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-soft); }

/* ==========================================================================
   Contact
   ========================================================================== */
.section-dark { background: var(--dark-bg); color: #fff; }
.section-dark h2 { color: #fff; }
.contact-grid { display: grid; gap: 40px; }

.contact-list { margin-top: 28px; }
.contact-list li {
  display: flex; flex-direction: column; gap: 2px;
  padding: 14px 0;
  border-bottom: 1px solid #26303A;
}
.contact-list a { color: #fff; font-weight: 500; }
.contact-label { font-family: var(--font-mono); font-size: 0.75rem; color: #7FD3E6; text-transform: uppercase; letter-spacing: 0.04em; }

.contact-form {
  background: var(--dark-panel);
  border: 1px solid #26303A;
  border-radius: var(--radius);
  padding: 24px;
}
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 0.85rem; margin-bottom: 6px; color: #C7CDD3; font-family: var(--font-mono); }
.form-row input, .form-row textarea {
  width: 100%;
  background: #10161D;
  border: 1px solid #2C3945;
  border-radius: 6px;
  padding: 11px 12px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.form-row input:focus, .form-row textarea:focus { border-color: var(--signal); }
.form-status { margin-top: 12px; font-size: 0.85rem; color: #7FD3E6; min-height: 1.2em; }

@media (min-width: 860px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--dark-bg); color: #8A9299; padding: 20px 0 32px; border-top: 1px solid #26303A; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 0.82rem; }
.back-top { color: #7FD3E6; }