/* ============================================================
   NETFOLIO - Cisco IOS design system
   Palette: Cisco midnight navy / Cisco sky blue / status green
   ============================================================ */

:root {
  --navy-950: #071A33;   /* page background        */
  --navy-900: #0B2240;   /* section background     */
  --navy-800: #10305A;   /* panels / cards         */
  --navy-700: #1E4471;   /* borders / raised edges */
  --cisco-sky: #049FD9;  /* Cisco brand blue       */
  --cisco-sky-dim: #037CB0;
  --ice: #CDE9F6;        /* primary text           */
  --ice-dim: #8FB8CF;    /* secondary text         */
  --status-up: #6CC04A;  /* up/up                  */
  --amber: #FBAB2C;      /* in-progress / warning  */
  --down: #E2231A;       /* Cisco red - admin down */
  --violet: #A78BFA;     /* blog category: support */
  --teal: #2DD4BF;       /* blog category: network */

  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", "Fira Code",
          Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, sans-serif;

  --radius: 6px;
  --max-w: 68rem;
}

* { box-sizing: border-box; }

/* Category filters set el.hidden via JS (see js/filter.js). Several
   components below declare their own `display` (flex/block), which
   otherwise beats the browser's default [hidden] rule and leaves
   "filtered out" cards/posts visible. Force it here so hidden always
   wins regardless of what display value a component sets. */
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--navy-950);
  color: var(--ice);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---------- utilities ---------- */
.wrap {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.mono { font-family: var(--mono); }

a { color: var(--cisco-sky); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cisco-sky);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--cisco-sky); color: var(--navy-950); }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 26, 51, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--navy-700);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.8rem;
}

.brand {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--ice);
  white-space: nowrap;
}
.brand .prompt { color: var(--status-up); }
.brand .host   { color: var(--cisco-sky); }

.site-nav { display: flex; gap: 1.4rem; }
.site-nav a {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ice-dim);
  letter-spacing: 0.03em;
}
.site-nav a[aria-current="page"],
.site-nav a:hover { color: var(--cisco-sky); }

/* ---------- terminal hero ---------- */
.hero { padding-block: 4.5rem 3.5rem; }

.terminal {
  background: #05121F;
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45),
              0 0 0 1px rgba(4, 159, 217, 0.08);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.9rem;
  background: var(--navy-900);
  border-bottom: 1px solid var(--navy-700);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ice-dim);
}
.terminal-bar .dot {
  width: 0.65rem; height: 0.65rem;
  border-radius: 50%;
  background: var(--navy-700);
}
.terminal-bar .dot:first-child { background: var(--cisco-sky-dim); }

.terminal-body {
  padding: 1.4rem 1.2rem 1.6rem;
  font-family: var(--mono);
  font-size: clamp(0.8rem, 2.3vw, 0.95rem);
  line-height: 1.8;
  min-height: 16rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.terminal-body .cmd    { color: var(--ice); }
.terminal-body .prompt { color: var(--status-up); }
.terminal-body .key    { color: var(--ice-dim); }
.terminal-body .val    { color: var(--cisco-sky); }
.terminal-body .up     { color: var(--status-up); }

.cursor {
  display: inline-block;
  width: 0.55em; height: 1.1em;
  vertical-align: text-bottom;
  background: var(--cisco-sky);
}
@media (prefers-reduced-motion: no-preference) {
  .cursor { animation: blink 1.05s steps(1) infinite; }
  @keyframes blink { 50% { opacity: 0; } }
}

.hero-tagline {
  margin-top: 1.6rem;
  max-width: 44rem;
  color: var(--ice-dim);
  font-size: 1.05rem;
}
.hero-tagline strong { color: var(--ice); font-weight: 600; }

/* ---------- section headings styled as IOS commands ---------- */
.section { padding-block: 3.2rem; }
.section + .section { border-top: 1px solid var(--navy-800); }

.cmd-heading {
  font-family: var(--mono);
  font-size: clamp(1.05rem, 3vw, 1.35rem);
  font-weight: 600;
  margin: 0 0 1.6rem;
  color: var(--ice);
}
.cmd-heading .prompt { color: var(--status-up); margin-right: 0.4em; }
.cmd-heading .verb   { color: var(--cisco-sky); }

/* ---------- interface-brief project table ---------- */
.int-table-scroll { overflow-x: auto; }

table.int-brief {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.85rem;
  min-width: 42rem;
}
.int-brief th {
  text-align: left;
  padding: 0.55rem 0.9rem;
  color: var(--ice-dim);
  font-weight: 600;
  border-bottom: 1px solid var(--navy-700);
  white-space: nowrap;
}
.int-brief td {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--navy-800);
  vertical-align: top;
}
.int-brief tr:hover td { background: rgba(4, 159, 217, 0.06); }

.int-name a { color: var(--ice); font-weight: 600; }
.int-name a:hover { color: var(--cisco-sky); }
.int-desc { color: var(--ice-dim); font-family: var(--sans); font-size: 0.88rem; }

.status { font-weight: 600; white-space: nowrap; }
.status.up    { color: var(--status-up); }
.status.prog  { color: var(--amber); }
.status.admin { color: var(--down); }

.legend {
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ice-dim);
}
.legend .up    { color: var(--status-up); }
.legend .prog  { color: var(--amber); }
.legend .admin { color: var(--down); }

/* ---------- project cards (projects page detail) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(19rem, 1fr));
  gap: 1.1rem;
}

.card {
  background: var(--navy-900);
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  padding: 1.2rem 1.25rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.card h3 {
  margin: 0;
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--ice);
}
.card p { margin: 0; color: var(--ice-dim); font-size: 0.92rem; }
.card .meta {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-top: 0.5rem;
}
.tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--navy-700);
  border-radius: 999px;
  color: var(--cisco-sky);
  white-space: nowrap;
}

/* ---------- syslog-style blog index ---------- */
.syslog { display: flex; flex-direction: column; gap: 0.35rem; }

.syslog-line {
  display: block;
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--ice);
  line-height: 1.7;
}
.syslog-line:hover {
  background: var(--navy-900);
  border-color: var(--navy-700);
  text-decoration: none;
}
.syslog-line .ts  { color: var(--ice-dim); }
.syslog-line .fac { color: var(--cisco-sky); }
.syslog-line .msg { color: var(--ice); }
.syslog-line:hover .msg { text-decoration: underline; }
.syslog-line .summary {
  display: block;
  font-family: var(--sans);
  color: var(--ice-dim);
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

/* ---------- blog article ---------- */
.article { max-width: 46rem; padding-block: 3.5rem; }
.article h1 {
  font-family: var(--mono);
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  line-height: 1.3;
  margin: 0.4rem 0 0.6rem;
}
.article .post-meta {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ice-dim);
  margin-bottom: 2rem;
}
.article h2 {
  font-family: var(--mono);
  font-size: 1.15rem;
  color: var(--cisco-sky);
  margin-top: 2.2rem;
}
.article p, .article li { color: var(--ice); }
.article code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--navy-900);
  border: 1px solid var(--navy-700);
  border-radius: 4px;
  padding: 0.1em 0.4em;
}
.article pre {
  background: #05121F;
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  overflow-x: auto;
}
.article pre code { background: none; border: 0; padding: 0; }

/* ---------- about block ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.2rem;
  align-items: start;
}
@media (max-width: 46rem) {
  .about-grid { grid-template-columns: 1fr; }
}

.runcfg {
  background: #05121F;
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.9;
  color: var(--ice-dim);
  overflow-x: auto;
}
.runcfg .kw  { color: var(--cisco-sky); }
.runcfg .val { color: var(--ice); }
.runcfg .cm  { color: var(--status-up); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--navy-700);
  margin-top: 3rem;
  padding-block: 2rem 2.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ice-dim);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}
.site-footer a { color: var(--ice-dim); }
.site-footer a:hover { color: var(--cisco-sky); }

/* ---------- small screens ---------- */
@media (max-width: 40rem) {
  .site-nav { gap: 0.9rem; }
  .hero { padding-block: 2.8rem 2.4rem; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- utility classes (replace inline styles for strict CSP) ---------- */
.mt-1 { margin-top: 1.4rem; }
.mt-2 { margin-top: 1.6rem; }
.mt-3 { margin-top: 2.5rem; }
.contact-line { font-size: 0.85rem; }
.page-intro {
  color: var(--ice-dim);
  max-width: 44rem;
  margin-top: -0.6rem;
  margin-bottom: 1.8rem;
}
.post-eyebrow {
  color: var(--cisco-sky);
  font-size: 0.8rem;
  margin: 0;
}

.hero-title {
  margin: 2rem 0 0.4rem;
  font-family: var(--sans);
  font-weight: 650;
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  line-height: 1.35;
  max-width: 46rem;
  color: var(--ice);
}
.hero-title .mono { color: var(--cisco-sky); }

/* ---------- category filter bar (IOS pipe-filter style) ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: -0.6rem 0 1.6rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ice-dim);
}
.filter-bar .pipe { color: var(--ice-dim); user-select: none; }

.filter-btn {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.8rem;
  background: transparent;
  color: var(--ice-dim);
  border: 1px solid var(--navy-700);
  border-radius: 999px;
  cursor: pointer;
}
.filter-btn:hover { color: var(--cisco-sky); border-color: var(--cisco-sky-dim); }
.filter-btn[aria-pressed="true"] {
  color: var(--navy-950);
  background: var(--cisco-sky);
  border-color: var(--cisco-sky);
  font-weight: 600;
}

.filter-current { color: var(--amber); }

.filter-empty {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ice-dim);
  padding: 0.9rem;
}

/* category label inside a syslog facility */
.fac.cat-sec     { color: var(--amber); }
.fac.cat-lab     { color: var(--cisco-sky); }
.fac.cat-python  { color: var(--status-up); }
.fac.cat-support { color: var(--violet); }
.fac.cat-network { color: var(--teal); }

/* ---------- blog post images (responsive WebP via tools/imgprep.py) ---------- */
.post-figure {
  margin: 1.8rem 0;
}
.post-figure img {
  display: block;
  width: 100%;
  height: auto;             /* with width/height attrs set: no layout shift */
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  background: #05121F;      /* letterbox color while lazy-loading */
}
.post-figure figcaption {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ice-dim);
  margin-top: 0.5rem;
}
.post-figure figcaption::before {
  content: "! ";
  color: var(--status-up);  /* IOS comment-style caption */
}