/* ============================================================
   Walter Brobson — Personal Site
   Refined liquid-glass theme over a deep purple field.
   ============================================================ */

:root {
  --bg-0: #0a0612;
  --bg-1: #14091f;
  --ink: #f3eef9;
  --ink-soft: rgba(243, 238, 249, 0.74);
  --ink-mute: rgba(243, 238, 249, 0.52);
  --line: rgba(243, 238, 249, 0.12);
  --line-strong: rgba(243, 238, 249, 0.22);
  --accent: #b794f6;
  --accent-deep: #7c3aed;
  --accent-soft: rgba(183, 148, 246, 0.18);

  --glass-bg: rgba(28, 18, 46, 0.42);
  --glass-bg-strong: rgba(28, 18, 46, 0.62);
  --glass-border: rgba(255, 255, 255, 0.10);
  --glass-highlight: rgba(255, 255, 255, 0.06);
  --glass-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.65),
                  0 1px 0 rgba(255, 255, 255, 0.06) inset,
                  0 0 0 1px rgba(255, 255, 255, 0.04) inset;

  --serif: "Cormorant Garamond", "Iowan Old Style", "Apple Garamond", Garamond, "Times New Roman", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono:  "SF Mono", "JetBrains Mono", "Menlo", monospace;

  --nav-h: 72px;
  --radius: 18px;
  --radius-sm: 10px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(1200px 800px at 75% -10%, rgba(124, 58, 237, 0.22), transparent 60%),
    radial-gradient(900px 700px at 5% 110%, rgba(76, 29, 149, 0.20), transparent 60%),
    linear-gradient(180deg, #0a0612 0%, #14091f 60%, #0a0612 100%);
}

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

/* ---------- Liquid canvas ---------- */
#liquid {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 50% 0%, transparent 50%, rgba(0,0,0,0.45) 100%),
    radial-gradient(80% 60% at 50% 110%, transparent 40%, rgba(0,0,0,0.55) 100%);
}

/* ---------- Glass primitive ---------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  backdrop-filter: blur(22px) saturate(160%);
  position: relative;
  overflow: hidden;
}
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,0.07), rgba(255,255,255,0) 35%);
  border-radius: inherit;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1180px, calc(100% - 36px));
  height: var(--nav-h);
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 50;
  border-radius: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 0.01em;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.05em;
  color: var(--ink);
  background: linear-gradient(180deg, rgba(183, 148, 246, 0.35), rgba(124, 58, 237, 0.25));
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 8px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.18) inset;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.brand-tag {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 2px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-radius: 8px;
  transition: color 200ms var(--ease), background 200ms var(--ease);
}
.nav-link:hover { color: var(--ink); background: rgba(255,255,255,0.04); }
.nav-link.is-active { color: var(--ink); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.nav-menu-btn {
  margin-left: 8px;
  position: relative;
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  cursor: pointer;
  transition: background 180ms var(--ease);
}
.nav-menu-btn:hover { background: rgba(255,255,255,0.08); }
.nav-menu-btn span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 16px;
  height: 1.5px;
  margin-left: -8px;
  background: var(--ink);
  border-radius: 1px;
  transform-origin: center;
  transition: transform 240ms var(--ease), opacity 140ms var(--ease);
}
.nav-menu-btn span:nth-child(1) { transform: translateY(-5px); }
.nav-menu-btn span:nth-child(2) { transform: translateY(0); }
.nav-menu-btn span:nth-child(3) { transform: translateY(5px); }
.nav-menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(0) rotate(45deg); }
.nav-menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(0) rotate(-45deg); }

/* ---------- Elaborate menu ---------- */
.nav-menu {
  position: fixed;
  top: calc(18px + var(--nav-h) + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  width: min(1180px, calc(100% - 36px));
  max-height: calc(100vh - var(--nav-h) - 60px);
  overflow: auto;
  z-index: 49;
  opacity: 0;
  pointer-events: none;
  transition: opacity 260ms var(--ease), transform 260ms var(--ease);
}
.nav-menu.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-menu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  padding: 32px 36px;
}
.nav-menu-heading {
  font-family: var(--serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.nav-menu-item {
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  transition: padding 220ms var(--ease);
}
.nav-menu-item:last-child { border-bottom: none; }
.nav-menu-item:hover { padding-left: 6px; }
.nav-menu-title {
  display: block;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 500;
  color: var(--ink);
}
.nav-menu-desc {
  display: block;
  font-size: 12.5px;
  color: var(--ink-mute);
  margin-top: 2px;
  letter-spacing: 0.01em;
}
.nav-menu-articles a {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.nav-menu-articles a:last-child { border-bottom: none; }
.nav-menu-articles .a-title {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
}
.nav-menu-articles .a-date {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
  align-self: center;
}

/* ---------- Main / Hero ---------- */
#main {
  position: relative;
  z-index: 2;
}

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}
.hero-eyebrow-line {
  width: 56px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.hero-eyebrow-text {
  font-size: 11px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.hero-name {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  line-height: 0.92;
  font-size: clamp(72px, 17vw, 240px);
  background: linear-gradient(180deg,
    rgba(255,255,255,0.98) 0%,
    rgba(243, 238, 249, 0.82) 55%,
    rgba(183, 148, 246, 0.55) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 1px 0 rgba(255,255,255,0.05);
  filter: drop-shadow(0 24px 60px rgba(124, 58, 237, 0.25));
}
.hero-first, .hero-last { display: block; }
.hero-last { font-style: normal; font-weight: 300; letter-spacing: 0.005em; }

.hero-sub {
  margin: 32px 0 0;
  font-size: 13px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  cursor: pointer;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: color 200ms var(--ease), background 200ms var(--ease), transform 200ms var(--ease);
  animation: bob 3.4s ease-in-out infinite;
}
.hero-scroll:hover { color: var(--ink); background: rgba(255,255,255,0.08); }
.hero-scroll svg { transform: translateY(1px); }

@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, 6px); }
}

/* ---------- Content panel ---------- */
.content-wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 24px 120px;
}
body.no-hero .content-wrap {
  padding-top: calc(18px + var(--nav-h) + 48px);
}

.panel {
  padding: 56px clamp(28px, 6vw, 72px);
  border-radius: var(--radius);
}

.panel h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(32px, 4.4vw, 48px);
  letter-spacing: -0.005em;
  margin: 0 0 8px;
}
.panel h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(22px, 2.6vw, 28px);
  letter-spacing: 0;
  margin: 36px 0 10px;
  color: var(--ink);
}
.panel h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 28px 0 8px;
}
.panel p { color: var(--ink-soft); margin: 12px 0; font-size: 16.5px; }
.panel a {
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}
.panel a:hover { color: var(--accent); border-color: var(--accent); }
.panel ul, .panel ol { padding-left: 1.2em; }
.panel li { color: var(--ink-soft); margin: 6px 0; }

.panel .lede {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink);
  margin: 8px 0 24px;
  font-style: italic;
}

.panel hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 36px 0;
}

/* page divider rule under title */
.panel .page-eyebrow {
  font-size: 11px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.panel .page-eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--line-strong);
  display: inline-block;
}

/* Project / list cards */
.cards {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: grid;
  gap: 14px;
}
.card {
  display: block;
  padding: 22px 24px;
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 220ms var(--ease), background 220ms var(--ease), transform 220ms var(--ease);
}
.card:hover {
  border-color: var(--line-strong);
  background: rgba(255,255,255,0.045);
  transform: translateY(-1px);
}
.card-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 4px;
  border: none;
}
.card-desc {
  color: var(--ink-mute);
  font-size: 14px;
  margin: 0;
}
.card-meta {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 8px;
}

/* Article index */
.article-index {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}
.article-index li { border-bottom: 1px solid var(--line); }
.article-index li:last-child { border-bottom: none; }
.article-index a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding: 22px 0;
  border: none;
  transition: padding 220ms var(--ease);
}
.article-index a:hover { padding-left: 8px; color: var(--ink); }
.article-index .ai-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
}
.article-index .ai-date {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
}

/* Footer */
.footer {
  position: relative;
  z-index: 2;
  padding: 40px 24px 60px;
  text-align: center;
  color: var(--ink-mute);
}
.footer-inner {
  display: inline-flex;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.footer-name { color: var(--ink-soft); }
.footer-sep { opacity: 0.5; }

/* ============================================================
   Article content — Markdown output (extra + codehilite)
   Scoped to .panel so it only affects rendered articles.
   ============================================================ */

/* Inline code */
.panel :not(pre) > code {
  font-family: var(--mono);
  font-size: 0.875em;
  padding: 0.15em 0.4em;
  border-radius: 5px;
  background: rgba(183, 148, 246, 0.14);
  border: 1px solid rgba(183, 148, 246, 0.18);
  color: #e9defc;
  word-break: break-word;
}

/* Code blocks — keep them inside the panel, scroll horizontally */
.panel pre,
.panel .codehilite {
  max-width: 100%;
  margin: 22px 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(8, 4, 16, 0.55);
  overflow: hidden;
}
.panel .codehilite pre,
.panel pre {
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.panel pre code {
  display: block;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: #e6dffb;
  white-space: pre;            /* don't wrap; scroll instead */
  background: none;
  border: none;
  padding: 0;
  tab-size: 4;
}
/* thin custom scrollbar for code */
.panel pre::-webkit-scrollbar { height: 8px; }
.panel pre::-webkit-scrollbar-track { background: transparent; }
.panel pre::-webkit-scrollbar-thumb {
  background: rgba(183, 148, 246, 0.3);
  border-radius: 8px;
}
.panel pre { scrollbar-width: thin; scrollbar-color: rgba(183,148,246,0.35) transparent; }

/* Pygments dark theme (purple-leaning) */
.codehilite .hll { background-color: rgba(183,148,246,0.12); }
.codehilite .c, .codehilite .ch, .codehilite .cm, .codehilite .c1, .codehilite .cs,
.codehilite .cp, .codehilite .cpf { color: #7d7095; font-style: italic; }
.codehilite .k, .codehilite .kc, .codehilite .kd, .codehilite .kn,
.codehilite .kp, .codehilite .kr, .codehilite .kt { color: #c9a8ff; font-weight: 500; }
.codehilite .o, .codehilite .ow { color: #d8b4fe; }
.codehilite .p { color: #cbbfe0; }
.codehilite .nb, .codehilite .bp { color: #93c5fd; }
.codehilite .nf, .codehilite .fm { color: #87e0c8; }
.codehilite .nc, .codehilite .nn, .codehilite .ne { color: #f0c987; }
.codehilite .nv, .codehilite .vc, .codehilite .vg, .codehilite .vi,
.codehilite .nx, .codehilite .n { color: #e6dffb; }
.codehilite .na, .codehilite .nt { color: #f4a8d8; }
.codehilite .nd { color: #f0c987; }
.codehilite .s, .codehilite .sa, .codehilite .sb, .codehilite .sc, .codehilite .dl,
.codehilite .sd, .codehilite .s2, .codehilite .se, .codehilite .sh, .codehilite .si,
.codehilite .sx, .codehilite .sr, .codehilite .s1, .codehilite .ss { color: #a5e6a0; }
.codehilite .m, .codehilite .mb, .codehilite .mf, .codehilite .mh,
.codehilite .mi, .codehilite .mo, .codehilite .il { color: #fbb6a0; }
.codehilite .w { color: inherit; }
.codehilite .err { color: #ff9ab0; }
.codehilite .gd { color: #ff9ab0; }
.codehilite .gi { color: #a5e6a0; }
.codehilite .ge { font-style: italic; }
.codehilite .gs { font-weight: 600; }

/* Tables — scroll horizontally if too wide */
.panel table {
  display: block;
  width: max-content;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 14.5px;
  -webkit-overflow-scrolling: touch;
}
.panel th, .panel td {
  padding: 10px 16px;
  border: 1px solid var(--line);
  text-align: left;
  color: var(--ink-soft);
}
.panel th {
  background: rgba(183, 148, 246, 0.1);
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.panel tbody tr:nth-child(even) { background: rgba(255,255,255,0.02); }

/* Blockquotes */
.panel blockquote {
  margin: 22px 0;
  padding: 6px 22px;
  border-left: 2px solid var(--accent);
  background: rgba(183, 148, 246, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-soft);
}
.panel blockquote p { margin: 10px 0; }
.panel blockquote blockquote {
  margin: 12px 0;
  border-left-color: rgba(183, 148, 246, 0.5);
}

/* Images */
.panel img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  display: inline-block;
}

/* Task lists */
.panel li input[type="checkbox"] {
  margin-right: 8px;
  accent-color: var(--accent);
  transform: translateY(1px);
}
.panel ul li.task-list-item { list-style: none; }
.panel ul:has(> li.task-list-item) { padding-left: 0; }

/* Footnotes */
.panel .footnote {
  font-size: 14px;
  color: var(--ink-mute);
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 12px;
}
.panel sup a { border: none; }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .brand-tag { display: none; }
  .nav-link { display: none; }
  .nav-menu-btn { display: grid; }
  .nav-menu-grid { grid-template-columns: 1fr; gap: 22px; padding: 22px; }
  .panel { padding: 36px 22px; }
  .article-index a { flex-direction: column; gap: 4px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .hero-scroll { animation: none; }
  * { transition: none !important; }
}