/* ============================================================
   nealkhis.com — Personal Site CSS
   Dark theme, Inter font, consistent with ACS/GambleGrip stack
   ============================================================ */

:root {
  --bg: #090b10;
  --bg2: #0f1218;
  --bg3: #161b24;
  --border: #1e2535;
  --text: #e6eaf3;
  --text2: #7a8499;
  --text3: #4a5568;
  --accent: #7c6af7;
  --accent2: #a597fa;
  --accent3: #5a4fd4;
  --green: #22c55e;
  --orange: #f59e0b;
  --red: #ef4444;
  --blue: #3b82f6;
  --max-w: 1140px;
  --nav-h: 68px;
  --radius: 12px;
  --radius-sm: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── NAV ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(9,11,16,0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled {
  background: rgba(9,11,16,0.95);
  border-color: var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 15px;
  white-space: nowrap;
}
.logo-mark {
  width: 34px; height: 34px;
  background: var(--accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800; color: #fff;
  flex-shrink: 0;
}
.logo-text { color: var(--text); }
.nav-links {
  display: flex; align-items: center; gap: 4px;
  margin-left: 8px;
}
.nav-link {
  padding: 6px 14px;
  border-radius: 6px;
  color: var(--text2);
  font-size: 14px; font-weight: 500;
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--text); background: var(--bg3); }
.nav-right {
  margin-left: auto;
  display: flex; align-items: center; gap: 12px;
}
.lang-switcher { display: flex; gap: 2px; }
.lang-opt {
  padding: 4px 8px;
  border-radius: 5px;
  font-size: 12px; font-weight: 600;
  color: var(--text3);
  transition: color .2s, background .2s;
}
.lang-opt:hover, .lang-opt.active {
  color: var(--text);
  background: var(--bg3);
}
.lang-opt.active { color: var(--accent2); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600;
  cursor: pointer; border: none;
  transition: transform .15s, box-shadow .15s, opacity .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-nav {
  background: var(--accent);
  color: #fff;
  padding: 7px 16px;
  font-size: 13px;
}
.btn-nav:hover { opacity: .9; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 24px rgba(124,106,247,.35);
  padding: 12px 28px;
  font-size: 15px;
}
.btn-primary:hover { opacity: .9; box-shadow: 0 6px 32px rgba(124,106,247,.45); }

.btn-ghost {
  background: transparent;
  color: var(--text2);
  border: 1px solid var(--border);
  padding: 12px 28px;
  font-size: 15px;
}
.btn-ghost:hover { color: var(--text); border-color: var(--text3); }

/* Mobile nav */
.nav-burger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 4px; margin-left: auto;
}
.nav-burger span {
  display: block; width: 22px; height: 2px;
  background: var(--text2);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 8px 0 16px;
}
.nav-mobile.open { display: flex; }
.nav-mobile-link {
  padding: 11px 24px;
  font-size: 15px; font-weight: 500;
  color: var(--text2);
  transition: color .2s;
}
.nav-mobile-link:hover, .nav-mobile-link.accent { color: var(--accent2); }
.nav-mobile-langs {
  display: flex; gap: 8px;
  padding: 12px 24px 0;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -20%; left: 50%; transform: translateX(-50%);
  width: 900px; height: 700px;
  background: radial-gradient(ellipse at center, rgba(124,106,247,.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  max-width: var(--max-w);
  margin: auto;
  padding: 80px 24px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}
.hero-content { display: flex; flex-direction: column; gap: 20px; }
.section-label {
  font-size: 12px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--accent2);
}
.hero-title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.5px;
  display: flex; flex-direction: column; gap: 4px;
}
.hero-line { display: block; }
.accent-text { color: var(--accent2); }
.hero-sub {
  font-size: 17px; line-height: 1.7;
  color: var(--text2);
  max-width: 480px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-scroll { display: flex; justify-content: center; padding: 32px; }
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, var(--border), transparent);
}

/* Hero code card */
.hero-visual { display: flex; align-items: center; justify-content: center; }
.hero-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 24px 80px rgba(0,0,0,.5);
}
.hc-header {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 16px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
}
.hc-dot {
  width: 11px; height: 11px; border-radius: 50%;
}
.hc-dot.red { background: #ff5f57; }
.hc-dot.yellow { background: #febc2e; }
.hc-dot.green { background: #28c840; }
.hc-title { margin-left: 6px; font-size: 12px; color: var(--text3); font-weight: 500; }
.hc-body {
  padding: 20px 20px 24px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 13px; line-height: 1.8;
}
.hc-line { white-space: pre; }
.c-kw { color: #c678dd; }
.c-mod { color: #61afef; }
.c-fn { color: #61dafb; }
.c-str { color: #98c379; }
.c-comment { color: var(--text3); font-style: italic; }

/* ── SECTIONS ── */
.section { padding: 100px 0; }
.section-dark { background: var(--bg2); }
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.section-header { margin-bottom: 56px; }
.section-header.centered { text-align: center; }
.section-title {
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 800;
  letter-spacing: -.4px;
  line-height: 1.2;
  margin-top: 10px;
}
.section-sub {
  font-size: 17px; line-height: 1.7;
  color: var(--text2);
  margin-top: 16px;
  max-width: 600px;
}
.section-header.centered .section-sub { margin-left: auto; margin-right: auto; }

/* ── ABOUT ── */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-p {
  color: var(--text2);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 16px;
}
.about-links {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 28px;
}
.about-link {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500;
  color: var(--text2);
  transition: color .2s, border-color .2s;
}
.about-link:hover { color: var(--text); border-color: var(--text3); }
.about-link-icon { font-size: 16px; }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}
.stat-n {
  font-size: 36px; font-weight: 800;
  color: var(--accent2);
  letter-spacing: -.5px;
}
.stat-l {
  font-size: 13px;
  color: var(--text2);
  margin-top: 4px;
  font-weight: 500;
}

/* ── PROJECTS GRID ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.project-card:hover {
  border-color: var(--accent3);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,.3);
}
.card-oss { border-color: rgba(34,197,94,.2); }
.card-oss:hover { border-color: rgba(34,197,94,.5); }
.card-company { border-color: rgba(245,158,11,.2); }
.card-company:hover { border-color: rgba(245,158,11,.5); }

.card-top { display: flex; align-items: center; justify-content: space-between; }
.card-icon { font-size: 28px; }

.badge {
  font-size: 11px; font-weight: 700;
  letter-spacing: .8px; text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
}
.badge-live { background: rgba(34,197,94,.12); color: var(--green); }
.badge-beta { background: rgba(245,158,11,.12); color: var(--orange); }
.badge-oss  { background: rgba(59,130,246,.12); color: var(--blue); }
.badge-private { background: rgba(239,68,68,.12); color: var(--red); }
.badge-company { background: rgba(245,158,11,.12); color: var(--orange); }

.card-name {
  font-size: 17px; font-weight: 700;
  line-height: 1.3;
}
.card-desc {
  font-size: 14px; line-height: 1.65;
  color: var(--text2);
  flex: 1;
}
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 11px; font-weight: 600;
  padding: 3px 9px;
  border-radius: 4px;
  background: var(--bg3);
  color: var(--text3);
  border: 1px solid var(--border);
}
.card-link {
  font-size: 13px; font-weight: 700;
  color: var(--accent2);
  margin-top: 4px;
  transition: color .2s;
}
.card-link:hover { color: #fff; }

/* ── CONNECT ── */
.connect-box {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  display: flex; flex-direction: column; gap: 20px; align-items: center;
}
.connect-actions {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: center;
  margin-top: 8px;
}

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
  background: var(--bg);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
}
.footer-tagline {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text2);
  max-width: 280px;
  line-height: 1.6;
}
.footer-cols { display: flex; gap: 48px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col-title {
  font-size: 12px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 4px;
}
.footer-link {
  font-size: 14px; color: var(--text2);
  transition: color .2s;
}
.footer-link:hover { color: var(--text); }
.footer-bottom {
  border-top: 1px solid var(--border);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--text3);
}
.footer-langs { display: flex; gap: 4px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-stats { margin-top: 8px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-cols { flex-wrap: wrap; gap: 32px; }
  .nav-links, .nav-right .btn-nav { display: none; }
  .nav-right { gap: 8px; }
  .nav-burger { display: flex; }
}

@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .projects-grid { grid-template-columns: 1fr; }
  .connect-actions { flex-direction: column; align-items: stretch; }
  .connect-actions .btn { justify-content: center; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero-inner { padding: 60px 24px 40px; }
}

/* ══════════════════════════════════════════════════════════════
   ECOSYSTEM SECTION
   ══════════════════════════════════════════════════════════════ */

/* Root node */
.eco-root {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 0;
}
.eco-root-node {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 28px;
  background: var(--bg3);
  border: 1px solid var(--accent3);
  border-radius: var(--radius);
  box-shadow: 0 0 40px rgba(124,106,247,.15);
}
.eco-root-icon { font-size: 24px; }
.eco-root-domain {
  font-size: 16px; font-weight: 800;
  color: var(--accent2);
  letter-spacing: -.2px;
}
.eco-root-desc { font-size: 12px; color: var(--text3); margin-top: 2px; }
.eco-root-line {
  width: 1px; height: 40px;
  background: var(--border);
  margin: 0 auto;
}

/* Branches */
.eco-branches {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
}
.eco-branches::before {
  content: '';
  position: absolute;
  top: 0; left: 16.66%; right: 16.66%;
  height: 1px;
  background: var(--border);
}
.eco-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.eco-branch-connector {
  width: 1px; height: 32px;
  background: var(--border);
}
.eco-branch-node {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: border-color .2s, box-shadow .2s;
}
.eco-branch-lab .eco-branch-node:hover { border-color: var(--accent3); box-shadow: 0 8px 30px rgba(124,106,247,.15); }
.eco-branch-oss .eco-branch-node:hover { border-color: rgba(34,197,94,.4); box-shadow: 0 8px 30px rgba(34,197,94,.1); }
.eco-branch-acs .eco-branch-node:hover { border-color: rgba(245,158,11,.4); box-shadow: 0 8px 30px rgba(245,158,11,.1); }

.eco-branch-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.eco-branch-info { display: flex; flex-direction: column; gap: 4px; }
.eco-branch-domain {
  font-size: 13px; font-weight: 700;
  color: var(--accent2);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
}
.eco-branch-lab .eco-branch-domain { color: var(--accent2); }
.eco-branch-oss .eco-branch-domain { color: var(--green); }
.eco-branch-acs .eco-branch-domain { color: var(--orange); }
.eco-branch-title {
  font-size: 15px; font-weight: 700;
  color: var(--text);
}
.eco-branch-desc {
  font-size: 13px; line-height: 1.6;
  color: var(--text2);
  margin-top: 4px;
}

/* Children */
.eco-branch-children {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  margin-top: 12px;
  padding: 0 8px;
}
.eco-child {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg2);
  font-size: 13px; font-weight: 500;
  color: var(--text2);
  transition: color .2s, border-color .2s;
}
.eco-child:hover { color: var(--text); border-color: var(--text3); }
.eco-child-oss:hover { color: var(--green); border-color: rgba(34,197,94,.3); }
.eco-child-acs:hover { color: var(--orange); border-color: rgba(245,158,11,.3); }

.eco-access {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  color: var(--text2);
}

/* ══════════════════════════════════════════════════════════════
   PROJECT CARD UPDATES
   ══════════════════════════════════════════════════════════════ */
.tag-tg { background: rgba(37,150,210,.12); color: #37a9e0; border-color: rgba(37,150,210,.2); }
.tag-cab { background: rgba(124,106,247,.12); color: var(--accent2); border-color: rgba(124,106,247,.2); }
.card-actions { display: flex; gap: 16px; align-items: center; margin-top: 4px; }
.card-link-ghost {
  color: var(--text3);
  font-size: 13px; font-weight: 600;
}
.card-link-ghost:hover { color: var(--text2); }

/* ══════════════════════════════════════════════════════════════
   METHODOLOGY SECTION
   ══════════════════════════════════════════════════════════════ */
.method-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}
.method-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color .2s;
}
.method-step:hover { border-color: var(--accent3); }
.method-step-num {
  font-size: 36px; font-weight: 900;
  color: var(--bg3);
  line-height: 1;
  flex-shrink: 0;
  min-width: 52px;
  letter-spacing: -1px;
}
.method-step:hover .method-step-num { color: var(--accent3); }
.method-step-title {
  font-size: 16px; font-weight: 700;
  margin-bottom: 8px;
}
.method-step-desc {
  font-size: 14px; line-height: 1.7;
  color: var(--text2);
}

/* AI Stack */
.method-stack {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
}
.method-stack-label {
  font-size: 12px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 20px;
}
.method-stack-items {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.stack-item { display: flex; flex-direction: column; gap: 8px; }
.stack-role {
  font-size: 11px; font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .8px;
}
.stack-models { display: flex; flex-wrap: wrap; gap: 6px; }
.stack-badge {
  font-size: 12px; font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
}
.stack-deepseek { background: rgba(124,106,247,.12); color: var(--accent2); }
.stack-gemini { background: rgba(59,130,246,.12); color: var(--blue); }
.stack-groq { background: rgba(34,197,94,.12); color: var(--green); }
.stack-openai { background: rgba(255,255,255,.08); color: var(--text2); }
.stack-arrow {
  font-size: 18px; color: var(--text3);
  font-weight: 300;
  align-self: center;
  padding-top: 20px;
}

/* ══════════════════════════════════════════════════════════════
   LEARN SECTION
   ══════════════════════════════════════════════════════════════ */
.learn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}
.learn-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color .2s, transform .2s;
}
.learn-card:hover {
  border-color: var(--accent3);
  transform: translateY(-2px);
}
.learn-card-oss { border-color: rgba(34,197,94,.2); }
.learn-card-oss:hover { border-color: rgba(34,197,94,.5); }
.learn-card-tag {
  display: inline-block;
  font-size: 11px; font-weight: 700;
  letter-spacing: .8px; text-transform: uppercase;
  color: var(--accent2);
  background: rgba(124,106,247,.1);
  padding: 3px 10px;
  border-radius: 20px;
  width: fit-content;
}
.learn-card-tag-oss { color: var(--green); background: rgba(34,197,94,.1); }
.learn-card-title {
  font-size: 17px; font-weight: 700;
  line-height: 1.3;
}
.learn-card-desc {
  font-size: 14px; line-height: 1.7;
  color: var(--text2);
  flex: 1;
}
.learn-card-link {
  font-size: 13px; font-weight: 700;
  color: var(--accent2);
  margin-top: 4px;
  transition: color .2s;
}
.learn-card-link:hover { color: #fff; }
.learn-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.learn-note {
  text-align: center;
  font-size: 13px;
  color: var(--text3);
  margin-top: 20px;
}

/* ══════════════════════════════════════════════════════════════
   TOOL DETAIL PAGE
   ══════════════════════════════════════════════════════════════ */
.tool-hero {
  padding-top: calc(var(--nav-h) + 48px);
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.tool-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.tool-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px; font-weight: 600;
  color: var(--text3);
  margin-bottom: 32px;
  transition: color .2s;
}
.tool-back:hover { color: var(--text2); }
.tool-hero-content { display: flex; flex-direction: column; gap: 28px; }
.tool-meta { display: flex; gap: 24px; align-items: flex-start; }
.tool-icon-lg { font-size: 52px; flex-shrink: 0; }
.tool-meta-info { display: flex; flex-direction: column; gap: 10px; }
.tool-meta-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge-hier { background: rgba(124,106,247,.12); color: var(--accent2); }
.badge-hier-oss { background: rgba(34,197,94,.12); color: var(--green); }
.badge-tg { background: rgba(37,150,210,.12); color: #37a9e0; }
.badge-cab { background: rgba(124,106,247,.12); color: var(--accent2); }
.tool-hero-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -.4px;
  line-height: 1.15;
}
.tool-hero-desc {
  font-size: 17px; line-height: 1.7;
  color: var(--text2);
  max-width: 600px;
}
.tool-hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Tool detail body */
.tool-detail { padding: 64px 0; }
.tool-detail-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: start;
}
.tool-main { display: flex; flex-direction: column; gap: 48px; }
.tool-section { display: flex; flex-direction: column; gap: 24px; }
.tool-section-title {
  font-size: 22px; font-weight: 700;
  letter-spacing: -.3px;
}
.tool-detailed {
  font-size: 16px; line-height: 1.8;
  color: var(--text2);
}

/* Tool steps */
.tool-steps { display: flex; flex-direction: column; gap: 16px; }
.tool-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 20px 24px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.tool-step-num {
  font-size: 28px; font-weight: 900;
  color: var(--accent3);
  flex-shrink: 0;
  min-width: 36px;
  line-height: 1;
}
.tool-step-title {
  font-size: 15px; font-weight: 700;
  margin-bottom: 6px;
}
.tool-step-desc {
  font-size: 14px; line-height: 1.7;
  color: var(--text2);
}

/* Tool sidebar */
.tool-sidebar { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 88px; }
.tool-sidebar-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.tool-sidebar-title {
  font-size: 14px; font-weight: 700;
  margin-bottom: 16px;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: .8px;
  font-size: 12px;
}
.tool-features { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.tool-feature {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text2);
}
.feature-check { color: var(--green); font-weight: 700; flex-shrink: 0; }
.tool-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tool-cta-card { background: var(--bg3); border-color: var(--accent3); text-align: center; }
.tool-cta-text {
  font-size: 15px; font-weight: 600;
  margin-bottom: 16px;
}
.tool-cta-card .btn { width: 100%; justify-content: center; }

/* Related */
.tool-related { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--border); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; }
.related-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  transition: border-color .2s;
}
.related-card:hover { border-color: var(--accent3); }
.related-icon { font-size: 20px; flex-shrink: 0; }
.related-name { font-weight: 700; font-size: 14px; }
.related-desc { font-size: 12px; color: var(--text2); margin-top: 4px; line-height: 1.5; }

/* ══════════════════════════════════════════════════════════════
   ACCESS PAGE
   ══════════════════════════════════════════════════════════════ */
.access-page {
  min-height: 100vh;
  padding-top: var(--nav-h);
  padding-bottom: 80px;
}
.access-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 64px 24px 0;
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 80px;
  align-items: start;
}
.access-title {
  font-size: clamp(24px, 3.5vw, 38px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.4px;
  margin-top: 12px;
  margin-bottom: 16px;
}
.access-sub {
  font-size: 16px; line-height: 1.75;
  color: var(--text2);
  margin-bottom: 36px;
}
.access-who { margin-bottom: 32px; }
.access-who-title {
  font-size: 12px; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text3);
  margin-bottom: 14px;
}
.access-who-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.access-who-item {
  display: flex; gap: 10px;
  font-size: 15px; color: var(--text2);
}
.access-check { color: var(--green); font-weight: 700; }
.access-tools-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.access-tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px; font-weight: 500;
  color: var(--text2);
}

/* Access form */
.access-form-wrap { position: sticky; top: 88px; }
.access-form-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.access-form-title {
  font-size: 20px; font-weight: 800;
  margin-bottom: 28px;
}
.access-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-label {
  font-size: 13px; font-weight: 600;
  color: var(--text2);
}
.form-input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-size: 15px;
  color: var(--text);
  font-family: inherit;
  transition: border-color .2s;
  width: 100%;
}
.form-input:focus {
  outline: none;
  border-color: var(--accent3);
}
.form-textarea { resize: vertical; min-height: 100px; }
.form-checkboxes { display: flex; flex-direction: column; gap: 8px; }
.form-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text2);
  cursor: pointer;
}
.form-checkbox input { width: 15px; height: 15px; accent-color: var(--accent); cursor: pointer; }
.form-note {
  font-size: 12px;
  color: var(--text3);
  text-align: center;
  margin-top: 4px;
}
.access-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 20px 0;
  color: var(--text3);
  font-size: 13px;
}
.access-divider::before, .access-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Success state */
.access-success {
  background: var(--bg2);
  border: 1px solid rgba(34,197,94,.3);
  border-radius: var(--radius);
  padding: 48px 36px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.access-success-icon {
  width: 56px; height: 56px;
  background: rgba(34,197,94,.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--green);
}
.access-success-title { font-size: 22px; font-weight: 800; }
.access-success-text { font-size: 15px; color: var(--text2); line-height: 1.7; max-width: 320px; }

/* ══════════════════════════════════════════════════════════════
   ADDITIONAL RESPONSIVE
   ══════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .eco-branches { grid-template-columns: 1fr; }
  .eco-branches::before { display: none; }
  .tool-detail-grid { grid-template-columns: 1fr; }
  .tool-sidebar { position: static; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .access-inner { grid-template-columns: 1fr; gap: 48px; }
  .access-form-wrap { position: static; }
  .method-stack-items { gap: 10px; }
}

@media (max-width: 900px) {
  .method-steps { grid-template-columns: 1fr; }
  .learn-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .eco-access { flex-direction: column; text-align: center; }
  .stack-arrow { display: none; }
  .method-stack-items { flex-direction: column; }
}

@media (max-width: 600px) {
  .tool-meta { flex-direction: column; }
  .tool-icon-lg { font-size: 40px; }
  .access-form-card { padding: 24px; }
  .access-inner { padding-top: 40px; }
}

/* ===== HERO METRICS ===== */
.hero-metrics {
  display: flex;
  gap: 24px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.hero-metrics span {
  font-size: 13px;
  color: var(--text-muted, #94a3b8);
  background: var(--bg2);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--bg3);
}

/* ===== AI COUNCIL ===== */
.council-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 32px 0 24px;
}
.council-step {
  background: var(--bg2);
  border: 1px solid var(--bg3);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(124,106,247,0.15);
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step-text {
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
}
.council-oss-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(124,106,247,0.3);
  padding-bottom: 2px;
}
.council-oss-link:hover { border-color: var(--accent); }

@media (max-width: 768px) {
  .council-steps { grid-template-columns: 1fr 1fr; }
  .hero-metrics { gap: 10px; }
}
@media (max-width: 480px) {
  .council-steps { grid-template-columns: 1fr; }
}

/* FAQ */
.faq-grid { display: flex; flex-direction: column; gap: 12px; max-width: 800px; margin: 32px auto 0; }
.faq-item { background: var(--bg2, var(--bg-2, #0f1218)); border: 1px solid var(--bg3, var(--border, #161b24)); border-radius: 10px; overflow: hidden; }
.faq-item summary { padding: 18px 20px; cursor: pointer; font-weight: 500; color: var(--text, #e2e8f0); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--accent, #7c6af7); font-size: 18px; transition: transform 0.2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 20px 18px; color: var(--muted, #64748b); line-height: 1.7; font-size: 15px; margin: 0; }


/* ── AI Chat Widget ─────────────────────────────────────────────────────── */
.chat-widget-nk { position:fixed; bottom:24px; right:24px; z-index:9999; display:flex; flex-direction:column; align-items:flex-end; gap:12px; }
.chat-panel-nk { width:340px; max-height:480px; display:flex; flex-direction:column; background:var(--bg2,#0f1218); border:1px solid rgba(124,106,247,.3); border-radius:16px; overflow:hidden; box-shadow:0 20px 60px rgba(0,0,0,.5); }
.chat-header-nk { display:flex; align-items:center; justify-content:space-between; padding:14px 16px; background:linear-gradient(135deg,#7c6af7,#a597fa); color:#fff; }
.chat-header-nk .chat-title-nk { font-weight:700; font-size:.95rem; }
.chat-header-nk .chat-status-nk { font-size:.75rem; opacity:.8; margin-top:2px; }
.chat-close-btn-nk { background:rgba(255,255,255,.2); border:none; color:#fff; width:26px; height:26px; border-radius:50%; cursor:pointer; font-size:.85rem; display:flex; align-items:center; justify-content:center; }
.chat-close-btn-nk:hover { background:rgba(255,255,255,.35); }
.chat-messages-nk { flex:1; overflow-y:auto; padding:14px; display:flex; flex-direction:column; gap:10px; }
.chat-msg-nk { max-width:85%; padding:9px 13px; border-radius:12px; font-size:.875rem; line-height:1.5; }
.chat-bot-nk { background:rgba(124,106,247,.12); border:1px solid rgba(124,106,247,.2); align-self:flex-start; border-bottom-left-radius:4px; }
.chat-user-nk { background:var(--accent,#7c6af7); color:#fff; align-self:flex-end; border-bottom-right-radius:4px; }
.chat-quick-nk { display:flex; flex-wrap:wrap; gap:6px; padding:0 14px 10px; }
.chat-qbtn-nk { font-size:.75rem; padding:5px 10px; border:1px solid rgba(124,106,247,.4); border-radius:20px; background:transparent; color:var(--accent2,#a597fa); cursor:pointer; }
.chat-qbtn-nk:hover { background:rgba(124,106,247,.15); }
.chat-input-row-nk { display:flex; align-items:center; gap:8px; padding:10px 14px; border-top:1px solid rgba(255,255,255,.08); }
.chat-input-nk { flex:1; background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.12); border-radius:8px; padding:8px 12px; color:var(--text,#e2e8f0); font-size:.875rem; outline:none; font-family:inherit; }
.chat-input-nk:focus { border-color:rgba(124,106,247,.5); }
.chat-send-nk { width:34px; height:34px; border-radius:8px; background:var(--accent,#7c6af7); border:none; color:#fff; font-size:1rem; cursor:pointer; display:flex; align-items:center; justify-content:center; }
.chat-send-nk:hover { opacity:.85; }
.chat-bubble-nk { display:flex; align-items:center; gap:8px; padding:12px 18px; background:linear-gradient(135deg,#7c6af7,#a597fa); border:none; border-radius:28px; color:#fff; font-size:.9rem; font-weight:600; cursor:pointer; box-shadow:0 4px 20px rgba(124,106,247,.4); transition:transform .2s,box-shadow .2s; animation:nk-chat-pulse 3s ease-in-out infinite; }
.chat-bubble-nk:hover { transform:translateY(-2px); box-shadow:0 6px 28px rgba(124,106,247,.5); animation:none; }
@keyframes nk-chat-pulse { 0%,100%{box-shadow:0 4px 20px rgba(124,106,247,.4)} 50%{box-shadow:0 4px 32px rgba(124,106,247,.8),0 0 0 8px rgba(124,106,247,.15)} }
@media (max-width:480px) { .chat-panel-nk { width:calc(100vw - 32px); } .chat-widget-nk { right:16px; bottom:16px; } }

/* ══════════════════════════════════════════════════════════════
   ACCESS TIERS (E45)
   ══════════════════════════════════════════════════════════════ */
.tier-card {
  background: var(--glass-bg, rgba(255,255,255,.04));
  border: 1px solid var(--glass-border, rgba(255,255,255,.08));
  border-radius: 12px;
  padding: 14px 16px;
  margin-top: 10px;
  transition: border-color .2s;
}
.tier-card.tier-active {
  border-color: rgba(124,106,247,.5);
  background: rgba(124,106,247,.07);
}
.tier-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 6px;
}
.tier-observer { background: rgba(100,200,100,.15); color: #6ddc8e; border: 1px solid rgba(100,200,100,.25); }
.tier-builder  { background: rgba(124,106,247,.15); color: #a597fa; border: 1px solid rgba(124,106,247,.3); }
.tier-partner  { background: rgba(250,176,5,.12);   color: #fbbf24; border: 1px solid rgba(250,176,5,.25); }
.tier-desc { font-size: 13px; color: var(--text-muted, #94a3b8); margin: 4px 0 0; line-height: 1.5; }

/* Tier card expanded layout (3-tier benefits) */
.tier-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.tier-card-icon {
  font-size: 22px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}
.tier-card-subtitle {
  font-size: 11px;
  color: var(--text-muted, #94a3b8);
  margin-top: 2px;
}
.tier-benefits {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.tier-benefits li {
  font-size: 12px;
  color: var(--text-muted, #94a3b8);
  padding-left: 14px;
  position: relative;
  line-height: 1.4;
}
.tier-benefits li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--accent, #7c6af7);
  font-weight: 700;
}
/* Observer variant - green accent on checkmarks */
.tier-card--observer .tier-benefits li::before { color: #6ddc8e; }
/* Builder variant - purple accent */
.tier-card--builder .tier-benefits li::before { color: #a597fa; }
/* Partner variant - gold accent */
.tier-card--partner .tier-benefits li::before { color: #fbbf24; }
/* Subtle left-border accent per tier */
.tier-card--observer { border-left: 2px solid rgba(100,200,100,.35); }
.tier-card--builder  { border-left: 2px solid rgba(124,106,247,.45); }
.tier-card--partner  { border-left: 2px solid rgba(250,176,5,.40); }