/* ============================================================
   TLE — Tech Leaders Exchange
   Terminal/IDE-flavored one-pager
   ============================================================ */

:root {
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  /* Dark (default) — graphite + electric green accent */
  --bg: #0B0D0E;
  --bg-2: #111416;
  --bg-3: #161A1D;
  --ink: #E7EDEE;
  --ink-2: #B6BFC1;
  --ink-3: #6E7A7D;
  --ink-4: #3F484B;
  --rule: #1F2528;
  --rule-soft: rgba(231,237,238,0.08);

  --accent: #B5F23F;       /* electric lime */
  --accent-2: #D4FF6E;
  --accent-ink: #0B0D0E;

  --kw: #FF7AB6;           /* magenta — keyword */
  --str: #79E0B0;          /* mint — string */
  --com: #6E7A7D;          /* comment */
  --num: #FFB454;          /* amber — number */

  --grid-line: rgba(231,237,238,0.04);
  --grid-line-strong: rgba(231,237,238,0.07);

  --pad-x: clamp(20px, 5vw, 80px);
  --maxw: 1180px;

  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #FAFAF7;
  --bg-2: #F1F1EC;
  --bg-3: #FFFFFF;
  --ink: #0B0D0E;
  --ink-2: #2A3033;
  --ink-3: #6E7A7D;
  --ink-4: #B6BFC1;
  --rule: #E5E7E2;
  --rule-soft: rgba(11,13,14,0.10);

  --accent: #4F7A1F;
  --accent-2: #5F8F25;
  --accent-ink: #FFFFFF;

  --kw: #B43F6E;
  --str: #2C7A4D;
  --com: #6E7A7D;
  --num: #B86A1B;

  --grid-line: rgba(11,13,14,0.05);
  --grid-line-strong: rgba(11,13,14,0.08);

  color-scheme: light;
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .25s ease, color .25s ease;
  overflow-x: hidden;
}

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

::selection { background: var(--accent); color: var(--accent-ink); }

h1, h2, h3 { margin: 0; }
p { margin: 0; }

/* ============================================================
   Background — grid + ambient glow
   ============================================================ */
.bg-grid {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to right, var(--grid-line-strong) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line-strong) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px, 256px 256px, 256px 256px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 30%, #000 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 100% 70% at 50% 30%, #000 30%, transparent 90%);
}

.bg-glow {
  position: fixed;
  top: -10%; left: 50%;
  transform: translateX(-50%);
  width: 1200px; height: 700px;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(ellipse at center, color-mix(in oklab, var(--accent) 28%, transparent) 0%, transparent 60%);
  filter: blur(40px);
  opacity: .55;
}
[data-theme="light"] .bg-glow { opacity: .25; }

main, .topbar, .foot { position: relative; z-index: 1; }

/* ============================================================
   Topbar — minimal, no menu
   ============================================================ */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px var(--pad-x);
  border-bottom: 1px solid var(--rule-soft);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  position: sticky; top: 0;
  z-index: 50;
}
.topbar-l { display: flex; align-items: center; gap: 4px; flex: 1; min-width: 0; overflow: hidden; }
.topbar-r { display: flex; align-items: center; gap: 14px; }
.prompt { color: var(--accent); font-weight: 600; }
.topbar-path { color: var(--ink); font-weight: 600; }
.topbar-sep { color: var(--ink-4); }
.topbar-host { color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.status-dot {
  width: 7px; height: 7px; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 22%, transparent),
              0 0 12px color-mix(in oklab, var(--accent) 70%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .55; transform: scale(.85); }
}
.status-label { color: var(--ink-3); }

.theme-toggle {
  width: 30px; height: 30px;
  border-radius: 6px;
  border: 1px solid var(--rule-soft);
  background: transparent;
  color: var(--ink-2);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all .15s ease;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); background: var(--bg-2); }
.theme-toggle .ico-moon { display: none; }
[data-theme="light"] .theme-toggle .ico-sun { display: none; }
[data-theme="light"] .theme-toggle .ico-moon { display: block; }

@media (max-width: 600px) {
  .status-label { display: none; }
}

/* ============================================================
   Page layout
   ============================================================ */
.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding: clamp(72px, 12vw, 144px) 0 clamp(72px, 9vw, 120px);
  text-align: left;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  margin-bottom: 32px;
  display: inline-flex; align-items: center; gap: 8px;
}
.kicker-bracket { color: var(--accent); }

.brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(40px, 8vw, 112px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin-bottom: 24px;
}
.brand-paren { color: var(--ink-4); font-weight: 400; }
.brand-tle {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 60px color-mix(in oklab, var(--accent) 35%, transparent);
}
.brand-full {
  display: block;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(18px, 2vw, 26px);
  letter-spacing: -0.01em;
  color: var(--ink-2);
  margin-top: 12px;
}

.hero-block {
  font-family: var(--font-mono);
  font-size: clamp(10px, 1.2vw, 13.5px);
  line-height: 1.5;
  color: var(--ink-2);
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 40px 0;
  overflow-x: auto;
  white-space: pre;
  position: relative;
}
.hero-block::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--accent);
  border-radius: 8px 0 0 8px;
}

.hero-cta {
  margin-top: 40px;
  display: flex; flex-wrap: wrap; gap: 12px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  line-height: 1;
  padding: 14px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 40%, transparent),
              0 8px 24px -8px color-mix(in oklab, var(--accent) 60%, transparent);
}
.btn-primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 22%, transparent),
              0 12px 28px -8px color-mix(in oklab, var(--accent) 70%, transparent);
}
.btn-ghost {
  background: transparent;
  color: var(--ink-2);
  border-color: var(--rule);
}
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-3); background: var(--bg-2); }
.btn-prompt { color: color-mix(in oklab, var(--accent-ink) 60%, transparent); font-weight: 700; }
.btn-ghost .btn-prompt { color: var(--accent); }
.btn-arrow { display: inline-block; transition: transform .15s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ============================================================
   Sections — common
   ============================================================ */
section {
  padding: clamp(64px, 8vw, 112px) 0;
  border-top: 1px solid var(--rule-soft);
}

.section-label {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  margin-bottom: 28px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--bg-2);
}
.label-num { color: var(--com); }
.label-name { color: var(--accent); font-weight: 600; }

.h2 {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 36px;
}

.prose p {
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.7;
  color: var(--ink-2);
  max-width: 68ch;
  text-wrap: pretty;
}
.prose p + p { margin-top: 20px; }
.prose strong {
  color: var(--ink);
  font-weight: 600;
  background: linear-gradient(180deg, transparent 60%, color-mix(in oklab, var(--accent) 30%, transparent) 60%);
  padding: 0 2px;
}

/* ============================================================
   About — who list (chips)
   ============================================================ */
.who-list {
  list-style: none; margin: 40px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 12px;
}
.who-list li {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  transition: all .15s;
}
.who-list li:hover {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 6%, var(--bg-2));
}
.who-tag { color: var(--kw); }
.who-val { color: var(--ink); font-weight: 600; }

/* ============================================================
   Join section
   ============================================================ */
.join-link {
  display: inline-flex; align-items: center; gap: 16px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.8vw, 22px);
  font-weight: 500;
  padding: 24px 28px;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  color: var(--ink);
  margin-bottom: 20px;
  transition: all .15s ease;
  word-break: break-all;
}
.join-link:hover {
  border-color: var(--rule);
  border-left-color: var(--accent-2);
  background: color-mix(in oklab, var(--accent) 6%, var(--bg-2));
  transform: translateX(4px);
}
.join-arrow { color: var(--accent); flex: 0 0 auto; }
.join-url { color: var(--str); }
.join-ext { color: var(--ink-3); margin-left: auto; flex: 0 0 auto; }
.join-link:hover .join-ext { color: var(--accent); }

.join-note {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-3);
  margin-top: 8px;
}

/* ============================================================
   Code of conduct — ghost link
   ============================================================ */
.ghost-link {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-2);
  border-bottom: 1px solid var(--rule);
  padding: 0 0 6px;
  transition: all .15s;
}
.ghost-link:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   Footer
   ============================================================ */
.foot {
  border-top: 1px solid var(--rule-soft);
  padding: 24px var(--pad-x);
  margin-top: 60px;
}
.foot-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
}
.foot-l { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-3); }
.foot-prompt { color: var(--accent); font-weight: 600; }
.foot-text { color: var(--ink-3); }
.foot-caret {
  display: inline-block;
  width: 8px; color: var(--accent);
  animation: blink 1s steps(2, end) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.foot-r { display: inline-flex; align-items: center; gap: 12px; color: var(--ink-3); }
.foot-r a { color: var(--ink-3); transition: color .15s; }
.foot-r a:hover { color: var(--accent); }
.foot-sep { color: var(--ink-4); }


/* ============================================================
   Page template — interior pages
   ============================================================ */
.topbar-link { display: inline-flex; align-items: center; gap: 4px; transition: opacity .15s; }
.topbar-link:hover { opacity: .75; }

.hero-page { padding: clamp(56px, 9vw, 96px) 0 clamp(40px, 5vw, 64px); }

.page-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 20px;
}
.page-sub {
  font-family: var(--font-sans);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 64ch;
  text-wrap: pretty;
}

.kicker-back { color: var(--ink-2); transition: color .15s; }
.kicker-back:hover { color: var(--accent); }
.kicker-sep { color: var(--ink-4); }

.content { padding-top: clamp(32px, 4vw, 56px); }

/* Markdown / prose extras */
.prose h2 {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 48px 0 16px;
}
.prose h3 {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(18px, 1.8vw, 22px);
  color: var(--ink);
  margin: 36px 0 12px;
}
.prose a { color: var(--ink); border-bottom: 1px solid var(--rule); transition: color .15s, border-color .15s; }
.prose a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.prose ul, .prose ol { margin: 16px 0; padding-left: 22px; color: var(--ink-2); }
.prose li { margin: 8px 0; line-height: 1.65; }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 2px 6px;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--accent);
}
.prose pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 18px 22px;
  margin: 24px 0;
  overflow-x: auto;
  color: var(--ink-2);
}
.prose pre code { background: transparent; border: none; padding: 0; color: inherit; }
.prose blockquote {
  margin: 24px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--accent);
  color: var(--ink-2);
  font-style: italic;
}
.prose hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 48px 0;
}