/* =========================================================
   Externalsight Blog — "Operator Console" redesign
   Aligned with Landing Page B design tokens
   ========================================================= */

:root {
  --bg:           #07090C;
  --bg-alt:       #0B0E13;
  --panel:        #10141B;
  --panel2:       #161B23;
  --panel3:       #1C2330;
  --ink:          #E8ECF2;
  --ink-soft:     #B6BFCE;
  --ink-mute:     #6B7689;
  --ink-dim:      #48505F;
  --line:         rgba(255,255,255,0.055);
  --line-strong:  rgba(255,255,255,0.12);
  --accent:       #5EE9F0;
  --accent-deep:  #0EA5C7;
  --accent-ink:   #03252A;
  --accent-soft:  rgba(94,233,240,0.13);
  --success:      #4ADE80;
  --warn:         #FBBF24;
  --danger:       #FB7185;
  --purple:       #A78BFA;
  --maxw:         1320px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { text-decoration: none; color: inherit; }
.mono { font-family: 'Geist Mono', ui-monospace, monospace; }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; padding: 0 40px;
  background: rgba(7,9,12,0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}
.nav-left { display: flex; align-items: center; gap: 40px; }
.brand { display: flex; align-items: center; gap: 9px; }
.brand-icon {
  width: 28px; height: 28px; border-radius: 7px;
  border: 1px solid var(--line-strong); background: var(--panel);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; overflow: hidden;
}
.brand-icon img { display: block; }
.brand-name { font-size: 14.5px; font-weight: 600; letter-spacing: -0.005em; color: var(--ink); }
.brand-sep { width: 1px; height: 18px; background: var(--line-strong); margin: 0 3px; }
.brand-section { font-size: 13px; color: var(--ink-mute); font-weight: 450; }

.nav-links { display: flex; gap: 26px; }
.nav-links a { font-size: 13px; color: var(--ink-soft); font-weight: 450; transition: color 150ms; }
.nav-links a:hover { color: var(--ink); }
.nav-link-active { color: var(--ink) !important; position: relative; }
.nav-link-active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -21px; height: 2px;
  background: var(--accent);
}

.nav-right { display: flex; align-items: center; gap: 16px; }
.status-pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: 'Geist Mono', monospace; font-size: 11px; color: var(--success);
  padding: 4px 11px; border: 1px solid rgba(74,222,128,0.22);
  border-radius: 99px; background: rgba(74,222,128,0.06);
}
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 8px var(--success); animation: pulse 2s ease-in-out infinite; }
.nav-signin { font-size: 13px; color: var(--ink-soft); transition: color 150ms; }
.nav-signin:hover { color: var(--ink); }
.nav-cta {
  padding: 8px 15px; border-radius: 7px;
  background: var(--accent); color: var(--accent-ink);
  font-size: 12.5px; font-weight: 600; transition: opacity 150ms;
}
.nav-cta:hover { opacity: 0.88; }

@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.45} }

/* =========================================================
   HERO
   ========================================================= */
.hero { position: relative; overflow: hidden; padding: 56px 40px 60px; border-bottom: 1px solid var(--line); }
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at 30% top, black 0%, transparent 70%);
  mask-image: radial-gradient(ellipse at 30% top, black 0%, transparent 70%);
}
.hero-glow {
  position: absolute; top: -220px; right: -160px; width: 680px; height: 680px;
  background: radial-gradient(circle, rgba(94,233,240,0.11) 0%, transparent 62%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: var(--maxw); margin: 0 auto; }
.breadcrumb {
  display: inline-flex; align-items: center; gap: 0.5rem; list-style: none; padding: 0;
  margin: 0 0 30px; font-family: 'Geist Mono', monospace; font-size: 11px;
  color: var(--ink-mute); letter-spacing: 0.05em;
}
.breadcrumb a { color: var(--ink-mute); transition: color 150ms; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb li:last-child { color: var(--ink-soft); }

.hero-cols { display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: center; }

.badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 11px; border-radius: 5px; background: var(--accent-soft); color: var(--accent);
  font-family: 'Geist Mono', monospace; font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.08em; margin-bottom: 24px;
}
.badge-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 6px var(--accent); animation: pulse 2s ease-in-out infinite; }

.hero-h1 {
  font-size: clamp(2.6rem, 4.6vw, 4rem); line-height: 0.99; letter-spacing: -0.035em;
  margin: 0 0 22px; font-weight: 600; color: var(--ink); text-wrap: balance;
}
.hero-accent {
  background: linear-gradient(118deg, var(--accent), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-sub { font-size: 16.5px; line-height: 1.62; color: var(--ink-soft); margin: 0; max-width: 540px; }

/* Telemetry panel */
.telemetry { background: var(--panel); border: 1px solid var(--line-strong); border-radius: 12px; overflow: hidden; box-shadow: 0 40px 80px -40px rgba(94,233,240,0.18); }
.telemetry-bar { display: flex; align-items: center; justify-content: space-between; padding: 11px 16px; background: var(--panel2); border-bottom: 1px solid var(--line); }
.telemetry-bar-label { font-size: 10px; color: var(--ink-mute); letter-spacing: 0.16em; }
.telemetry-bar-live { display: inline-flex; align-items: center; gap: 6px; font-size: 10px; color: var(--success); font-weight: 600; letter-spacing: 0.1em; }
.live-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--success); box-shadow: 0 0 6px var(--success); animation: pulse 1.6s ease-in-out infinite; }
.telemetry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); }
.kpi { background: var(--panel); padding: 18px 18px; }
.kpi-label { font-size: 9.5px; color: var(--ink-mute); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 8px; }
.kpi-value { font-size: 30px; font-weight: 600; letter-spacing: -0.03em; color: var(--ink); line-height: 1; font-variant-numeric: tabular-nums; }
.kpi-value.accent { color: var(--accent); }
.kpi-delta { font-size: 10px; color: var(--ink-mute); margin-top: 7px; letter-spacing: 0.04em; }
.kpi-delta.up { color: var(--success); }

/* =========================================================
   FILTER RAIL
   ========================================================= */
.filter-rail {
  position: sticky; top: 60px; z-index: 90;
  background: rgba(11,14,19,0.86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.filter-inner { max-width: var(--maxw); margin: 0 auto; padding: 14px 40px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 7px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line);
  font-size: 12.5px; font-weight: 500; color: var(--ink-soft);
  font-family: inherit;
  transition: border-color 160ms, background 160ms, color 160ms;
}
.chip:hover { border-color: var(--line-strong); color: var(--ink); }
.chip-count { font-family: 'Geist Mono', monospace; font-size: 10.5px; color: var(--ink-dim); }
.chip.active { background: var(--accent-soft); border-color: rgba(94,233,240,0.4); color: var(--accent); }
.chip.active .chip-count { color: var(--accent-deep); }

/* =========================================================
   MAIN
   ========================================================= */
.main { max-width: var(--maxw); margin: 0 auto; padding: 56px 40px 96px; }

/* =========================================================
   FEATURED
   ========================================================= */
.featured {
  background: var(--panel); border: 1px solid var(--line-strong); border-top: 2px solid var(--accent);
  border-radius: 14px; display: grid; grid-template-columns: 1fr 416px; overflow: hidden;
  margin-bottom: 56px; position: relative; transition: box-shadow 220ms;
}
.featured:hover { box-shadow: 0 0 0 1px rgba(94,233,240,0.16), 0 28px 70px -30px rgba(94,233,240,0.18); }
.featured-glow { position: absolute; top: -90px; right: 300px; width: 520px; height: 420px; background: radial-gradient(circle, rgba(94,233,240,0.07) 0%, transparent 60%); pointer-events: none; }
.featured-body { padding: 46px; display: flex; flex-direction: column; gap: 18px; position: relative; }
.featured-meta { display: flex; align-items: center; gap: 9px; }
.marker {
  font-family: 'Geist Mono', monospace; font-size: 9.5px; font-weight: 700; letter-spacing: 0.14em;
  color: var(--accent); background: var(--accent-soft); border: 1px solid rgba(94,233,240,0.25);
  padding: 3px 9px; border-radius: 5px;
}
.tag {
  font-family: 'Geist Mono', monospace; font-size: 9.5px; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-mute); background: var(--panel2);
  border: 1px solid var(--line); padding: 3px 9px; border-radius: 5px;
}
.featured-readtime { margin-left: auto; font-size: 10px; color: var(--ink-dim); letter-spacing: 0.1em; }
.featured-title { font-size: clamp(1.7rem, 2.6vw, 2.3rem); font-weight: 600; letter-spacing: -0.025em; line-height: 1.1; color: var(--ink); margin: 0; }
.featured-excerpt { font-size: 14.5px; line-height: 1.68; color: var(--ink-soft); margin: 0; }
.featured-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: auto; padding-top: 24px; border-top: 1px solid var(--line); }

.byline { display: flex; align-items: center; gap: 12px; }
.byline-avatar {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--panel3); border: 1px solid var(--line-strong);
  font-family: 'Geist Mono', monospace; font-size: 11px; font-weight: 600; color: var(--accent);
}
.byline-text { display: flex; flex-direction: column; gap: 2px; }
.byline-name { font-size: 13px; font-weight: 500; color: var(--ink); }
.byline-date { font-size: 10.5px; color: var(--ink-mute); letter-spacing: 0.03em; }

.read-btn {
  display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0; white-space: nowrap;
  padding: 11px 20px; border-radius: 7px; background: var(--accent); color: var(--accent-ink);
  font-size: 13px; font-weight: 600; letter-spacing: 0.01em; transition: opacity 150ms;
}
.read-btn:hover { opacity: 0.88; }

/* Featured console */
.featured-visual { background: var(--bg-alt); border-left: 1px solid var(--line); display: flex; align-items: center; justify-content: center; padding: 38px 34px; overflow: hidden; position: relative; }
.featured-visual-glow { position: absolute; inset: 0; background: radial-gradient(circle at 50% 40%, rgba(94,233,240,0.07) 0%, transparent 65%); pointer-events: none; }
.console { width: 100%; max-width: 348px; background: var(--panel); border: 1px solid var(--line-strong); border-radius: 9px; overflow: hidden; position: relative; box-shadow: 0 34px 64px -22px rgba(0,0,0,0.55); animation: float 6s ease-in-out infinite; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-3px)} }
.console-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; background: var(--panel2); border-bottom: 1px solid var(--line); }
.cdot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.cdot-r { background: #FF5F57; } .cdot-y { background: #FEBC2E; } .cdot-g { background: #28C840; }
.console-title { font-size: 11px; color: var(--ink-mute); margin-left: 6px; }
.console-live { margin-left: auto; display: flex; align-items: center; gap: 5px; font-size: 10px; color: var(--success); font-weight: 600; }
.console-live-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--success); box-shadow: 0 0 6px var(--success); animation: pulse 1.6s ease-in-out infinite; }
.console-body { padding: 16px 18px; font-size: 11.5px; line-height: 1.85; max-height: calc(7 * 1.85em + 32px); overflow: hidden; }
.log-time { color: var(--ink-dim); }
.log-ok { color: var(--success); }
.log-warn { color: var(--warn); }
.log-crit { color: var(--danger); }
.log-run { color: var(--accent); }
.log-mute { color: var(--ink-mute); }
.log-cursor { color: var(--accent); animation: blink 1.1s step-end infinite; }
@keyframes blink { 0%,50%{opacity:1} 51%,100%{opacity:0} }

/* =========================================================
   SECTION HEADER
   ========================================================= */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.section-title { font-size: 10.5px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); }
.section-count { font-size: 10.5px; color: var(--ink-dim); letter-spacing: 0.06em; }

/* =========================================================
   GRID + CARDS
   ========================================================= */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 11px;
  padding: 24px; display: flex; flex-direction: column; gap: 13px; cursor: pointer;
  position: relative; overflow: hidden; min-height: 252px;
  transition: border-color 200ms, box-shadow 200ms, transform 200ms;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(94,233,240,0.35), transparent);
  opacity: 0; transition: opacity 200ms;
}
.card:hover { border-color: rgba(94,233,240,0.2); box-shadow: 0 10px 36px -14px rgba(94,233,240,0.12); transform: translateY(-2px); }
.card:hover::before { opacity: 1; }

.card-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.card-index { font-family: 'Geist Mono', monospace; font-size: 10px; color: var(--ink-dim); letter-spacing: 0.1em; }
.card-title { font-size: 16.5px; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; color: var(--ink); margin: 0; }
.card-excerpt { font-size: 13px; line-height: 1.62; color: var(--ink-soft); margin: 0; flex-grow: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 15px; border-top: 1px solid var(--line); margin-top: auto; }
.card-byline { font-family: 'Geist Mono', monospace; font-size: 10.5px; color: var(--ink-mute); line-height: 1.5; }
.card-byline-date { color: var(--ink-dim); }
.card-cta { display: inline-flex; align-items: center; gap: 4px; color: var(--accent); font-family: 'Geist Mono', monospace; font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; flex-shrink: 0; white-space: nowrap; transition: gap 150ms; }
.card:hover .card-cta { gap: 8px; }

.empty-state { text-align: center; padding: 80px 0; color: var(--ink-mute); font-size: 13px; letter-spacing: 0.04em; }

/* entry animation */
@keyframes fadeup { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
.featured { animation: fadeup 0.45s ease both; }
.card { animation: fadeup 0.4s ease both; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { background: var(--bg-alt); border-top: 1px solid var(--line); padding: 64px 40px 40px; }
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 1.6fr 3fr; gap: 56px; margin-bottom: 44px; }
.footer-brand-col .brand { margin-bottom: 16px; }
.footer-blurb { font-size: 12.5px; color: var(--ink-mute); line-height: 1.6; margin: 0 0 14px; max-width: 280px; }
.footer-mail { font-size: 11.5px; color: var(--ink-soft); }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.footer-col { display: flex; flex-direction: column; gap: 9px; }
.footer-col-title { font-size: 11px; color: var(--ink-mute); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 6px; }
.footer-col a { font-size: 13px; color: var(--ink-soft); transition: color 150ms; }
.footer-col a:hover { color: var(--ink); }
.footer-link-active { color: var(--accent) !important; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 24px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.footer-bottom .mono { font-size: 11px; color: var(--ink-mute); letter-spacing: 0.04em; }
.footer-certs { letter-spacing: 0.08em !important; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1080px) {
  .hero-cols { grid-template-columns: 1fr; gap: 40px; }
  .telemetry { max-width: 520px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .featured { grid-template-columns: 1fr 340px; }
  .nav-links { display: none; }
}
@media (max-width: 760px) {
  .nav { padding: 0 20px; }
  .status-pill { display: none; }
  .hero { padding: 44px 20px 48px; }
  .filter-inner { padding: 14px 20px; }
  .main { padding: 40px 20px 72px; }
  .featured { grid-template-columns: 1fr; }
  .featured-visual { display: none; }
  .featured-body { padding: 30px; }
  .grid { grid-template-columns: 1fr; }
  .footer { padding: 48px 20px 32px; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}