:root {
  /* Surfaces */
  --bg: #fcfcfd;
  --bg-subtle: #f4f5f7;
  --bg-card: #ffffff;
  --bg-elevated: #ffffff;

  /* Text */
  --text: #14161a;
  --text-soft: #5a6472;
  --text-faint: #8b95a3;

  /* Lines */
  --border: #e8eaed;
  --border-strong: #d7dae0;

  /* Brand */
  --accent: #5b5ef0;
  --accent-hover: #4a4dd6;
  --accent-2: #06b6d4;
  --accent-soft: color-mix(in srgb, var(--accent) 10%, transparent);

  /* Elevation scale */
  --shadow-sm: 0 1px 2px rgba(16,24,40,.05);
  --shadow: 0 1px 3px rgba(16,24,40,.06), 0 4px 16px rgba(16,24,40,.04);
  --shadow-md: 0 4px 12px rgba(16,24,40,.07), 0 12px 32px rgba(16,24,40,.06);
  --shadow-hover: 0 8px 24px rgba(16,24,40,.08), 0 20px 48px rgba(91,94,240,.12);

  /* Geometry */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;

  /* Rhythm */
  --space: 1rem;
  --maxw-reading: 720px;
}

[data-theme="dark"] {
  --bg: #0a0c10;
  --bg-subtle: #0f1217;
  --bg-card: #14181f;
  --bg-elevated: #1a1f28;

  --text: #e8eaef;
  --text-soft: #9aa4b2;
  --text-faint: #6b7585;

  --border: #1e242e;
  --border-strong: #2a323e;

  --accent: #7c7ff5;
  --accent-hover: #9296ff;
  --accent-2: #22d3ee;
  --accent-soft: color-mix(in srgb, var(--accent) 16%, transparent);

  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow: 0 2px 8px rgba(0,0,0,.35);
  --shadow-md: 0 6px 20px rgba(0,0,0,.4);
  --shadow-hover: 0 12px 40px rgba(124,127,245,.2);
}

/* ============ Base ============ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv11", "ss01";  /* nicer Inter glyphs if available */
  transition: background .3s ease, color .3s ease;
}
a { color: var(--accent); }

/* Ambient gradient glow */
.bg-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px 300px at 15% -5%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%),
    radial-gradient(500px 300px at 90% 10%, color-mix(in srgb, var(--accent-2) 10%, transparent), transparent 70%);
}

/* ============ Responsive container system ============ */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
}
.container-wide    { max-width: 1200px; }
.container-medium  { max-width: 900px; }
.container-reading { max-width: 720px; }

@media (max-width: 640px) {
  .container { padding: 1rem 1rem 3rem; }
}
/* ============ Nav ============ */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .75rem clamp(1rem, 4vw, 2rem);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--border); }   /* hooked up in Phase 3 */
.nav-brand { font-size: 1.2rem; font-weight: 800; letter-spacing: -.03em; color: var(--text); text-decoration: none; display: flex; align-items: center; gap: .15rem; }
.brand-mark { background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-dot { color: var(--accent); }

.nav-links { display: flex; gap: .25rem; }
.nav-page { padding: .45rem .9rem; border-radius: var(--radius-sm); text-decoration: none; color: var(--text-soft); font-size: .92rem; font-weight: 500; transition: color .2s, background .2s; }
.nav-page:hover { color: var(--text); background: var(--bg-subtle); }
.nav-page.active { color: var(--accent); background: var(--accent-soft); }

.nav-right { display: flex; align-items: center; gap: .5rem; }
.nav-icon { color: var(--text-soft); display: flex; padding: .4rem; border-radius: var(--radius-sm); transition: color .2s, background .2s, transform .2s; }
.nav-icon:hover { color: var(--accent); background: var(--bg-subtle); transform: translateY(-1px); }

.theme-toggle { border: 1px solid var(--border); background: var(--bg-card); color: var(--text); width: 36px; height: 36px; border-radius: var(--radius-sm); cursor: pointer; display: grid; place-items: center; font-size: .95rem; transition: all .25s ease; }
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }

/* Theme toggle */
.theme-toggle {
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  width: 36px; height: 36px; border-radius: 50%; cursor: pointer;
  display: grid; place-items: center; font-size: .95rem;
  transition: transform .25s ease, border-color .2s;
}
.theme-toggle:hover { transform: rotate(18deg) scale(1.08); border-color: var(--accent); }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: none; }

/* ============ Search ============ */
.search-wrap { position: relative; }
.search-icon {
  position: absolute; left: .7rem; top: 50%; transform: translateY(-50%);
  color: var(--text-soft); pointer-events: none;
}
#search-input {
  width: 200px; padding: .5rem .8rem .5rem 2.1rem;
  border: 1px solid var(--border); border-radius: 999px;
  background: var(--bg-card); color: var(--text); font-size: .88rem;
  transition: width .3s ease, border-color .2s, box-shadow .2s;
}
#search-input:focus {
  outline: none; width: 260px; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}
.suggestions {
  position: absolute; top: calc(100% + 8px); right: 0; width: 320px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-hover);
  overflow: hidden; z-index: 60;
  animation: pop .18s ease;
}
@keyframes pop { from { opacity: 0; transform: translateY(-6px) scale(.98); } }
.suggestion {
  display: flex; justify-content: space-between; align-items: center; gap: .8rem;
  padding: .65rem .95rem; color: var(--text); text-decoration: none;
  font-size: .9rem; transition: background .15s;
}
.suggestion:hover, .suggestion.active {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.suggestion-cat { color: var(--text-soft); font-size: .74rem; flex-shrink: 0; }

/* ============ Hero ============ */
.hero {
  padding: 3.5rem 0 2.5rem;
  max-width: 720px;          /* hero text shouldn't stretch full 1200px */
  animation: fadeUp .6s ease both;
}
.hero-title { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; letter-spacing: -.03em; line-height: 1.12; margin: 0 0 .9rem; }
.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent));
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 6s linear infinite;
}
@keyframes shimmer { to { background-position: 200% center; } }
.hero-sub { color: var(--text-soft); font-size: clamp(1rem, 2vw, 1.15rem); margin: 0; max-width: 540px; }

/* ============ Category bar ============ */
.cat-bar { display: flex; gap: .5rem; flex-wrap: wrap; margin: 1.5rem 0 2rem; }
.cat-pill {
  padding: .4rem 1rem; border-radius: 999px; font-size: .85rem; font-weight: 500;
  text-decoration: none; color: var(--text-soft);
  background: var(--bg-card); border: 1px solid var(--border);
  transition: all .2s ease;
}
.cat-pill:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.cat-pill.active { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; border-color: transparent; box-shadow: var(--shadow); }

.post-meta { display: flex; align-items: center; gap: .7rem; }
.post-meta time { color: var(--text-faint); font-size: .8rem; }
.cat-badge {
  padding: .18rem .65rem; border-radius: 999px; font-size: .7rem; font-weight: 700;
  text-decoration: none; text-transform: uppercase; letter-spacing: .05em;
  background: var(--accent-soft); color: var(--accent);
}
.cat-cybersecurity { background: rgba(239,68,68,.12); color: #ef4444; }
.cat-ai-ml { background: rgba(168,85,247,.13); color: #a855f7; }
.cat-cloud-architecture { background: rgba(6,182,212,.13); color: #0891b2; }
.cat-devops { background: rgba(34,197,94,.13); color: #16a34a; }
.cat-networking { background: rgba(245,158,11,.13); color: #d97706; }
[data-theme="dark"] .cat-cloud-architecture { color: #22d3ee; }
[data-theme="dark"] .cat-devops { color: #4ade80; }

/* ============ Post cards ============ */
/* ============ Responsive post grid ============ */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.4rem;
  align-items: start;
}
@media (max-width: 480px) {
  .post-grid { grid-template-columns: 1fr; gap: 1rem; }
}
.post-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; height: 100%;
  overflow: hidden;
  animation: fadeUp .55s ease both; animation-delay: var(--delay, 0ms);
  transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s, border-color .3s;
}
/* gradient top accent line, revealed on hover */
.post-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.post-card:hover::before { transform: scaleX(1); }
.post-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}
.post-card h2 { margin: .7rem 0 .55rem; font-size: 1.22rem; line-height: 1.35; letter-spacing: -.015em; }
.post-card h2 a { color: var(--text); text-decoration: none; transition: color .2s; }
.post-card:hover h2 a { color: var(--accent); }
.post-summary { color: var(--text-soft); margin: 0 0 1.1rem; font-size: .92rem; line-height: 1.6; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.read-more { font-size: .87rem; font-weight: 600; color: var(--accent); text-decoration: none; margin-top: auto; display: inline-flex; align-items: center; gap: .35rem; }
.read-more .arrow { transition: transform .25s ease; }
.read-more:hover .arrow { transform: translateX(5px); }
.read-more { font-size: .88rem; font-weight: 600; text-decoration: none; margin-top: auto; }
.read-more .arrow { display: inline-block; transition: transform .2s ease; }
.read-more:hover .arrow { transform: translateX(4px); }

/* Category badges — color-coded */
.cat-badge {
  padding: .14rem .6rem; border-radius: 999px; font-size: .72rem;
  font-weight: 600; text-decoration: none; text-transform: uppercase;
  letter-spacing: .04em;
  background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent);
}
.cat-cybersecurity { background: rgba(239,68,68,.12); color: #ef4444; }
.cat-ai-ml { background: rgba(168,85,247,.12); color: #a855f7; }
.cat-cloud-architecture { background: rgba(6,182,212,.12); color: #0891b2; }
.cat-devops { background: rgba(34,197,94,.12); color: #16a34a; }
.cat-networking { background: rgba(245,158,11,.12); color: #d97706; }

.empty-state { text-align: center; color: var(--text-soft); padding: 3rem 0; }

/* ============ Post page ============ */
.progress-bar {
  position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 100;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .1s linear;
}
.post-header { margin-bottom: 1.5rem; }
.post-content h1 { font-size: clamp(1.7rem, 4vw, 2.3rem); letter-spacing: -.025em; line-height: 1.2; }
.post-content h2 { margin-top: 2.2rem; letter-spacing: -.02em; }
.post-content img { max-width: 100%; border-radius: 10px; }
.post-content blockquote {
  margin: 1.5rem 0; padding: .8rem 1.2rem;
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  border-radius: 0 10px 10px 0; color: var(--text-soft);
}
.post-content code {
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Menlo, monospace;
  font-size: .88em;
}
.post-content :not(pre) > code {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--accent); padding: .12em .4em; border-radius: 5px;
}
.post-content pre {
  border-radius: 12px; padding: 1.1rem 1.3rem; overflow-x: auto;
  border: 1px solid var(--border); box-shadow: var(--shadow);
  line-height: 1.6;
}
.post-content table { border-collapse: collapse; width: 100%; margin: 1.5rem 0; }
.post-content th, .post-content td {
  border: 1px solid var(--border); padding: .55rem .8rem; text-align: left; font-size: .92rem;
}
.post-content th { background: color-mix(in srgb, var(--accent) 7%, transparent); }

.post-content :not(pre) > code {
  background: var(--accent-soft); color: var(--accent);
  padding: .12em .4em; border-radius: 5px; font-size: .88em;
  font-family: ui-monospace, "Cascadia Code", Menlo, monospace;
}
.post-content pre {
  border-radius: var(--radius); padding: 1.2rem 1.4rem; overflow-x: auto;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  font-size: .85rem; line-height: 1.6; margin: 1.5rem 0;
}
.post-content blockquote {
  margin: 1.5rem 0; padding: .9rem 1.3rem;
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  border-radius: 0 var(--radius) var(--radius) 0; color: var(--text-soft);
}
.post-content table { border-collapse: collapse; width: 100%; margin: 1.5rem 0; font-size: .92rem; box-shadow: var(--shadow-sm); border-radius: var(--radius); overflow: hidden; }
.post-content th { background: var(--bg-subtle); color: var(--text); font-weight: 600; text-align: left; padding: .7rem .9rem; }
.post-content td { padding: .65rem .9rem; border-top: 1px solid var(--border); }
.post-content tr:hover td { background: var(--bg-subtle); }

.back-link {
  display: inline-block; margin-top: 2.5rem; text-decoration: none;
  font-weight: 600; font-size: .92rem; transition: transform .2s;
}
.back-link:hover { transform: translateX(-4px); }

/* ============ Footer & misc ============ */
.site-footer {
  text-align: center; color: var(--text-soft); font-size: .85rem;
  padding: 2rem 1rem; border-top: 1px solid var(--border);
}

.site-footer {
  text-align: center; color: var(--text-faint); font-size: .85rem;
  padding: 3rem 1rem; border-top: 1px solid var(--border); margin-top: 4rem;
}
.site-footer a { color: var(--text-soft); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

::selection { background: color-mix(in srgb, var(--accent) 28%, transparent); color: var(--text); }

* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 5px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }
.fade-up { animation: fadeUp .6s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } }

::selection { background: color-mix(in srgb, var(--accent) 30%, transparent); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media (max-width: 560px) {
  #search-input { width: 130px; }
  #search-input:focus { width: 170px; }
  .suggestions { width: calc(100vw - 2.5rem); }
}

.nav-links { display: flex; gap: .3rem; }
.nav-page {
  padding: .4rem .85rem; border-radius: 8px; text-decoration: none;
  color: var(--text-soft); font-size: .92rem; font-weight: 500;
  transition: color .2s, background .2s;
}
.nav-page:hover { color: var(--text); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.nav-page.active { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.nav-icon { color: var(--text-soft); display: flex; transition: color .2s, transform .2s; }
.nav-icon:hover { color: var(--accent); transform: translateY(-2px); }

/* Buttons */
.btn-primary {
  display: inline-block; padding: .65rem 1.4rem; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; text-decoration: none; font-weight: 600; font-size: .95rem;
  border: none; cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 35%, transparent); }
.btn-ghost {
  display: inline-block; padding: .65rem 1.4rem; border-radius: 10px;
  border: 1px solid var(--border); color: var(--text); text-decoration: none;
  font-weight: 600; font-size: .95rem; transition: border-color .2s, transform .2s;
}
.btn-ghost:hover { border-color: var(--accent); transform: translateY(-2px); }

/* About */
.about { padding: 3rem 0; }
.about-grid { display: grid; grid-template-columns: 280px 1fr; gap: 2.5rem; align-items: center; }
.about-photo-wrap { position: relative; width: 280px; height: 280px; }
.about-photo {
  width: 100%; height: 100%; object-fit: cover; border-radius: 24px;
  position: relative; z-index: 1; box-shadow: var(--shadow-hover);
}
.about-photo-ring {
  position: absolute; inset: -10px; border-radius: 30px; z-index: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  opacity: .55; filter: blur(18px);
  animation: breathe 5s ease-in-out infinite;
}
@keyframes breathe { 50% { opacity: .3; transform: scale(.97); } }
.about-text h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); letter-spacing: -.025em; margin: 0 0 .8rem; }
.about-roles { display: flex; gap: .5rem; flex-wrap: wrap; margin: 0 0 1.2rem; }
.role-chip {
  padding: .3rem .8rem; border-radius: 999px; font-size: .82rem;
  background: var(--bg-card); border: 1px solid var(--border);
}
.about-cta { display: flex; gap: .8rem; margin-top: 1.5rem; }

/* Contact */
.contact { max-width: 620px; margin: 0 auto; padding: 2.5rem 0; }
.contact h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); letter-spacing: -.025em; margin: 0 0 .4rem; }
.contact-sub { color: var(--text-soft); margin: 0 0 2rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-field { display: flex; flex-direction: column; gap: .4rem; }
.form-field label { font-size: .85rem; font-weight: 600; color: var(--text-soft); }
.form-field input, .form-field select, .form-field textarea {
  padding: .7rem .9rem; border-radius: 10px; font-size: .95rem;
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  font-family: inherit; transition: border-color .2s, box-shadow .2s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.btn-submit { align-self: flex-start; }

/* Honeypot — visually removed, still in DOM for bots */
.hp-field {
  position: absolute; left: -9999px; top: -9999px;
  height: 1px; width: 1px; overflow: hidden;
}

/* Alerts */
.alert { padding: .9rem 1.2rem; border-radius: 10px; margin-bottom: 1.5rem; font-size: .92rem; animation: pop .25s ease; }
.alert ul { margin: 0; padding-left: 1.1rem; }
.alert-success { background: rgba(34,197,94,.12); color: #16a34a; border: 1px solid rgba(34,197,94,.3); }
.alert-error { background: rgba(239,68,68,.1); color: #ef4444; border: 1px solid rgba(239,68,68,.3); }

@media (max-width: 860px) {
  .nav-links { display: none; }   /* footer links cover navigation on small screens */
  .about-grid { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .about-roles, .about-cta { justify-content: center; }
  .form-row { grid-template-columns: 1fr; }
}

/* ============ Agent chat — modern redesign ============ */

/* Floating launcher */
.agent-fab {
  position: fixed; bottom: 1.4rem; right: 1.4rem; z-index: 190;
  width: 58px; height: 58px; border-radius: 18px; border: none; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; display: grid; place-items: center;
  box-shadow: 0 8px 30px color-mix(in srgb, var(--accent) 45%, transparent);
  animation: fabIn .4s cubic-bezier(.34,1.56,.64,1);
  transition: transform .25s ease, box-shadow .25s ease;
}
.agent-fab:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 12px 36px color-mix(in srgb, var(--accent) 55%, transparent); }
.agent-fab svg { width: 24px; height: 24px; }
.agent-fab-pulse {
  position: absolute; inset: 0; border-radius: 18px;
  border: 2px solid var(--accent); animation: fabPulse 2.4s ease-out infinite;
}
@keyframes fabIn { from { opacity: 0; transform: scale(.4) translateY(20px); } }
@keyframes fabPulse { 0% { opacity: .7; transform: scale(1); } 100% { opacity: 0; transform: scale(1.5); } }

/* Panel */
.agent-panel {
  position: fixed; bottom: 1.4rem; right: 1.4rem; z-index: 200;
  width: min(410px, calc(100vw - 2rem));
  height: min(580px, calc(100vh - 2.4rem));
  display: flex; flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 24px 70px rgba(0,0,0,.28), 0 0 0 1px color-mix(in srgb, var(--accent) 8%, transparent);
  opacity: 0; transform: translateY(24px) scale(.96);
  transform-origin: bottom right;
  transition: opacity .25s ease, transform .3s cubic-bezier(.34,1.4,.64,1), width .3s ease, height .3s ease;
  resize: both; min-width: 330px; min-height: 400px;
  max-width: calc(100vw - 2rem); max-height: calc(100vh - 2rem);
}
.agent-panel.in { opacity: 1; transform: translateY(0) scale(1); }
.agent-panel.expanded { width: min(880px, calc(100vw - 2rem)); height: calc(100vh - 2.4rem); }

/* Header */
.agent-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: .85rem 1rem;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--accent) 14%, var(--bg-card)),
    color-mix(in srgb, var(--accent-2) 10%, var(--bg-card)));
  border-bottom: 1px solid var(--border);
}
.agent-brand { display: flex; align-items: center; gap: .65rem; }
.agent-avatar {
  width: 38px; height: 38px; border-radius: 12px; flex-shrink: 0;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 12px color-mix(in srgb, var(--accent) 40%, transparent);
}
.agent-avatar svg { width: 20px; height: 20px; }
.agent-brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.agent-title { font-weight: 700; font-size: .95rem; color: var(--text); }
.agent-status { font-size: .72rem; color: var(--text-soft); display: flex; align-items: center; gap: .35rem; }
.agent-status i {
  width: 6px; height: 6px; border-radius: 50%; background: #22c55e;
  box-shadow: 0 0 0 0 rgba(34,197,94,.6); animation: liveDot 2s infinite;
}
@keyframes liveDot { 0% { box-shadow: 0 0 0 0 rgba(34,197,94,.5); } 70% { box-shadow: 0 0 0 6px rgba(34,197,94,0); } }
.agent-actions { display: flex; gap: .2rem; }
.agent-icon-btn {
  background: none; border: none; color: var(--text-soft); cursor: pointer;
  width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center;
  transition: background .15s, color .15s, transform .15s;
}
.agent-icon-btn:hover { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); transform: scale(1.08); }

/* Context strip */
.agent-context { border-bottom: 1px solid var(--border); background: var(--bg); }
.agent-context-toggle {
  width: 100%; display: flex; align-items: center; gap: .5rem;
  padding: .6rem 1rem; background: none; border: none; cursor: pointer;
  color: var(--text-soft); font-size: .82rem; font-weight: 600;
}
.agent-context-toggle .ctx-label { flex: 1; text-align: left; }
.agent-context-toggle svg:last-child { transition: transform .25s ease; }
.agent-context.open .agent-context-toggle svg:last-child { transform: rotate(180deg); }
.agent-context-body {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height .3s ease, opacity .25s ease, padding .3s ease;
  display: grid; gap: .7rem; padding: 0 1rem;
}
.agent-context.open .agent-context-body { max-height: 200px; opacity: 1; padding: 0 1rem .9rem; }
.agent-field { display: flex; flex-direction: column; gap: .25rem; }
.agent-field-label { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--text-soft); }
.agent-select {
  padding: .5rem .7rem; border-radius: 10px; font-size: .85rem;
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  cursor: pointer; transition: border-color .2s, box-shadow .2s;
}
.agent-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }

/* Log */
.agent-log {
  flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: .7rem;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.agent-log::-webkit-scrollbar { width: 6px; }
.agent-log::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Welcome */
.agent-welcome { text-align: center; margin: auto 0; color: var(--text-soft); animation: fadeUp .4s ease; }
.agent-welcome-icon {
  width: 56px; height: 56px; margin: 0 auto .8rem; border-radius: 18px;
  display: grid; place-items: center; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}
.agent-welcome-icon svg { width: 26px; height: 26px; }
.agent-welcome p { margin: 0 0 1rem; font-size: .92rem; }
.agent-welcome-post { color: var(--accent); }
.agent-chips { display: flex; flex-direction: column; gap: .45rem; }
.agent-chip {
  padding: .55rem .9rem; border-radius: 12px; font-size: .84rem; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  transition: all .2s ease;
}
.agent-chip:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }

/* Messages */
.agent-msg { display: flex; opacity: 0; transform: translateY(10px); transition: opacity .3s ease, transform .3s ease; }
.agent-msg.in { opacity: 1; transform: translateY(0); }
.agent-msg.user { justify-content: flex-end; }
.agent-bubble {
  max-width: 85%; padding: .65rem .95rem; border-radius: 16px;
  font-size: .9rem; line-height: 1.6; word-break: break-word; white-space: pre-wrap;
}
.agent-msg.user .agent-bubble {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; border-bottom-right-radius: 5px;
}
.agent-msg.bot .agent-bubble {
  background: color-mix(in srgb, var(--accent) 8%, var(--bg));
  border: 1px solid var(--border); border-bottom-left-radius: 5px; white-space: normal;
}
.agent-panel.expanded .agent-bubble { max-width: 80%; }

/* Markdown in bot bubbles */
.agent-bubble p { margin: 0 0 .55rem; } .agent-bubble p:last-child { margin: 0; }
.agent-bubble ul, .agent-bubble ol { margin: .4rem 0 .55rem 1.1rem; padding: 0; }
.agent-bubble li { margin: .25rem 0; }
.agent-bubble strong { color: var(--text); font-weight: 700; }
.agent-bubble h4, .agent-bubble h5, .agent-bubble h6 { margin: .55rem 0 .3rem; font-size: .92rem; color: var(--text); }
.agent-bubble code { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); padding: .1em .35em; border-radius: 5px; font-family: ui-monospace, Menlo, monospace; font-size: .85em; }
.agent-bubble pre { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: .7rem .9rem; overflow-x: auto; margin: .5rem 0; }
.agent-bubble pre code { background: none; color: var(--text); padding: 0; }

/* Typing indicator */
.agent-typing { display: flex; gap: 4px; align-items: center; }
.agent-typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); opacity: .5; animation: typing 1.3s infinite; }
.agent-typing span:nth-child(2) { animation-delay: .2s; }
.agent-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes typing { 0%,60%,100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-5px); opacity: 1; } }

/* Composer */
.agent-form { display: flex; gap: .5rem; align-items: flex-end; padding: .8rem 1rem; border-top: 1px solid var(--border); background: var(--bg-card); }
.agent-input {
  flex: 1; padding: .65rem .9rem; border-radius: 14px; font-size: .9rem;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  font-family: inherit; resize: none; line-height: 1.4; max-height: 120px;
  transition: border-color .2s, box-shadow .2s;
}
.agent-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent); }
.agent-send {
  width: 42px; height: 42px; flex-shrink: 0; border: none; border-radius: 13px; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
  display: grid; place-items: center; transition: transform .2s ease, box-shadow .2s ease;
}
.agent-send:hover { transform: scale(1.08) rotate(-8deg); box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 40%, transparent); }
.agent-send svg { width: 18px; height: 18px; }

@media (max-width: 480px) {
  .agent-panel { bottom: 0; right: 0; width: 100vw; height: 100dvh; border-radius: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .agent-panel, .agent-msg, .agent-fab, .agent-typing span { animation: none !important; transition: opacity .15s !important; }
}

/* Chat code blocks — readable + copyable */
.agent-bubble .code-block {
  margin: .6rem 0; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--border); background: var(--bg-card);
}
.agent-bubble .code-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: .35rem .7rem; background: color-mix(in srgb, var(--accent) 8%, var(--bg));
  border-bottom: 1px solid var(--border);
}
.agent-bubble .code-lang {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .05em; color: var(--text-soft);
}
.agent-bubble .code-copy {
  font-size: .72rem; font-weight: 600; cursor: pointer;
  padding: .25rem .6rem; border-radius: 7px;
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text-soft);
  transition: all .15s;
}
.agent-bubble .code-copy:hover { border-color: var(--accent); color: var(--accent); }
.agent-bubble .code-block pre {
  margin: 0; border: none; border-radius: 0; max-height: 420px;
  overflow: auto; padding: .9rem 1rem; font-size: .82rem; line-height: 1.55;
}
.agent-bubble .code-block pre code { font-family: ui-monospace, "Cascadia Code", Menlo, monospace; }

/* When expanded, give code answers real breathing room */
.agent-panel.expanded .agent-msg.bot .agent-bubble { max-width: 95%; }
.agent-panel.expanded .agent-log { padding: 1.2rem 1.6rem; }

/* Scrollbar inside code blocks */
.agent-bubble .code-block pre::-webkit-scrollbar { height: 7px; width: 7px; }
.agent-bubble .code-block pre::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* ============ Phase 3: mobile nav, scroll, a11y ============ */

/* Sticky-nav shadow */
.nav.scrolled { box-shadow: var(--shadow-sm); border-bottom-color: var(--border); }

/* Burger button (hidden on desktop) */
.nav-burger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 38px; height: 38px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg-card); cursor: pointer; padding: 0 9px;
}
.nav-burger span {
  display: block; height: 2px; width: 100%; background: var(--text); border-radius: 2px;
  transition: transform .3s ease, opacity .2s ease;
}
.nav-burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.active span:nth-child(2) { opacity: 0; }
.nav-burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-backdrop {
  position: fixed; inset: 0; z-index: 45;
  background: rgba(0,0,0,.4); backdrop-filter: blur(2px);
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } }

/* Scroll reveal */
.reveal-pending { opacity: 0; transform: translateY(24px); }
.post-card.revealed { opacity: 1; transform: translateY(0); transition: opacity .55s ease, transform .55s cubic-bezier(.2,.8,.2,1); }

/* Accessibility: visible focus rings only for keyboard users */
:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px;
}
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.post-card a:focus-visible { outline-offset: 4px; }

/* Skip-link for screen readers / keyboard */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: #fff; padding: .6rem 1rem; border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---- Responsive: mobile nav drawer ---- */
@media (max-width: 860px) {
  .nav-burger { display: flex; }
  .nav-links {
    position: fixed; top: 0; right: 0; z-index: 46;
    flex-direction: column; gap: .3rem;
    width: min(280px, 80vw); height: 100dvh;
    padding: 5rem 1.2rem 1.2rem;
    background: var(--bg-card); border-left: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
    transform: translateX(100%); transition: transform .3s cubic-bezier(.4,0,.2,1);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-page { font-size: 1.05rem; padding: .8rem 1rem; }
  /* keep search visible but compact on mobile */
  #search-input { width: 110px; }
  #search-input:focus { width: 150px; }
}

@media (max-width: 480px) {
  .search-wrap { display: none; }   /* search via... we add a mobile search affordance below */
  .nav-right { gap: .35rem; }
}

/* Reduced motion: honor user preference everywhere */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important; scroll-behavior: auto !important;
  }
  .reveal-pending { opacity: 1; transform: none; }
}