/* ============================================================
   Agendo marketing site — layout + components (vanilla)
   Builds on the design-system tokens (styles.css). Self-contained,
   no React/Babel. Default environment is ink. Fully responsive.
   ============================================================ */

:root {
  --site-maxw: 1216px;
  --site-gut: clamp(20px, 5vw, 48px);
  --nav-h: 68px;
}

html { scroll-behavior: smooth; }
body { overflow-x: hidden; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.wrap { max-width: var(--site-maxw); margin: 0 auto; padding-left: var(--site-gut); padding-right: var(--site-gut); }

/* ---------- the line (signature rule) + content blocks ---------- */
/* The signature line and all content are VISIBLE BY DEFAULT — never gated on a
   transition/animation completing (backgrounded tabs pause those clocks, which
   would otherwise leave content collapsed). Entrance motion is layered on only
   as a safe enhancement that cannot hide anything. */
.rule { height: var(--agendo-stroke-rule); width: 56px; background: var(--agendo-brand); border: 0; margin: 0; transform-origin: left center; }
.reveal-line { /* visible by default; hook for the draw enhancement */ }
.reveal { /* visible by default */ }

@media (prefers-reduced-motion: no-preference) {
  @keyframes agendo-draw { from { transform: scaleX(0); } to { transform: scaleX(1); } }
  /* JS adds .play / .armed only where it can also guarantee the end-state,
     so a paused clock never traps content in the hidden start frame. */
  .reveal-line.play { animation: agendo-draw var(--agendo-dur-draw) var(--agendo-ease-line); }
  .reveal.armed { opacity: 0; transform: translateY(14px); transition: opacity 640ms var(--agendo-ease-ui), transform 640ms var(--agendo-ease-ui); }
  .reveal.armed.in { opacity: 1; transform: none; }
}

/* ---------- mono label / eyebrow ---------- */
.eyebrow { font-family: var(--agendo-font-mono); font-size: 11px; font-weight: 400; letter-spacing: 0.22em; text-transform: uppercase; color: var(--agendo-fg-muted); }
.eyebrow.green { color: var(--agendo-brand); }

/* ---------- wordmark ---------- */
.wordmark { font-family: var(--agendo-font-display); font-weight: 500; letter-spacing: -0.045em; line-height: 1; color: var(--agendo-fg); text-decoration: none; display: inline-block; }
.wordmark .o { color: var(--agendo-brand); }

/* ---------- buttons ---------- */
.btn { -webkit-appearance: none; appearance: none; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--agendo-font-mono); font-weight: 400; letter-spacing: 0.12em; text-transform: uppercase; font-size: 13px;
  padding: 13px 24px; border: 1px solid transparent; border-radius: 0; cursor: pointer; text-decoration: none;
  transition: background var(--agendo-dur-fast) var(--agendo-ease-ui), color var(--agendo-dur-fast) var(--agendo-ease-ui), border-color var(--agendo-dur-fast) var(--agendo-ease-ui), transform var(--agendo-dur-fast) var(--agendo-ease-ui); }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 9px 16px; font-size: 12px; }
.btn-lg { padding: 16px 30px; font-size: 14px; }
.btn-primary { background: var(--agendo-brand); color: var(--agendo-on-brand); border-color: var(--agendo-brand); }
.btn-primary:hover { background: var(--agendo-brand-hover); border-color: var(--agendo-brand-hover); }
.btn-secondary { background: transparent; color: var(--agendo-fg); border-color: var(--agendo-border-strong); }
.btn-secondary:hover { color: var(--agendo-brand); border-color: var(--agendo-brand); }
.btn-ghost { background: transparent; color: var(--agendo-fg-muted); border-color: transparent; }
.btn-ghost:hover { color: var(--agendo-fg); }
.btn-signal { background: var(--agendo-signal); color: var(--agendo-paper); border-color: var(--agendo-signal); }
.btn-signal:hover { filter: brightness(1.08); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- badges ---------- */
.badge { display: inline-flex; align-items: center; gap: 7px; font-family: var(--agendo-font-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; border: 1px solid var(--agendo-border-strong); color: var(--agendo-fg-muted); padding: 4px 9px; line-height: 1; }
.badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--agendo-fg-faint); }
.badge.done { color: var(--agendo-brand); border-color: var(--agendo-brand); }
.badge.done::before { background: var(--agendo-brand); }
.badge.active { color: var(--agendo-signal); border-color: var(--agendo-signal); }
.badge.active::before { background: var(--agendo-signal); }

/* ---------- header / nav ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(16,20,19,0.82); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--agendo-border); }
.nav { height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-link { font-family: var(--agendo-font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; color: var(--agendo-fg-muted); padding-bottom: 4px; border-bottom: 1px solid transparent; transition: color var(--agendo-dur-fast) var(--agendo-ease-ui); }
.nav-link:hover { color: var(--agendo-fg); }
.nav-link.active { color: var(--agendo-brand); border-bottom-color: var(--agendo-brand); }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--agendo-border-strong); color: var(--agendo-fg); width: 40px; height: 36px; cursor: pointer; align-items: center; justify-content: center; padding: 0; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { content: ""; display: block; width: 17px; height: 1.5px; background: currentColor; position: relative; transition: transform 200ms var(--agendo-ease-ui), opacity 200ms; }
.nav-toggle span::before { position: absolute; top: -5px; }
.nav-toggle span::after { position: absolute; top: 5px; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: translateY(5px) rotate(45deg); }
.nav-open .nav-toggle span::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- section rhythm ---------- */
.section { border-bottom: 1px solid var(--agendo-border); }
.section .wrap { padding-top: 88px; padding-bottom: 88px; }
.section.surface { background: var(--agendo-surface); }
.section-head { margin-bottom: 48px; }
.section-head .eyebrow { display: block; margin-bottom: 18px; }
h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -0.03em; }
.h-section { font-size: clamp(26px, 3vw, 38px); }
.dot { color: var(--agendo-brand); }

/* ---------- hero ---------- */
.hero .wrap { padding-top: 120px; padding-bottom: 96px; }
.hero .rule { margin-bottom: 40px; }
.hero .eyebrow { display: block; margin-bottom: 28px; }
.hero h1 { font-weight: 500; font-size: clamp(46px, 7vw, 88px); line-height: 0.98; letter-spacing: -0.04em; max-width: 16ch; }
.hero h1 .muted { color: var(--agendo-fg-muted); }
.hero .lede { margin: 36px 0 0; font-weight: 300; font-size: clamp(18px, 2vw, 23px); line-height: 1.5; letter-spacing: -0.01em; max-width: 46ch; color: var(--agendo-fg); }
.hero .cta-row { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }
.hero .payoff { margin-top: 56px; font-family: var(--agendo-font-display); font-weight: 400; font-size: 20px; letter-spacing: -0.02em; color: var(--agendo-fg-muted); }

/* ---------- problem band ---------- */
.split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: start; }
.split h2 { margin-top: 20px; font-size: clamp(28px, 3.4vw, 42px); line-height: 1.08; }
.split .body { padding-top: 10px; font-weight: 300; font-size: 19px; line-height: 1.55; color: var(--agendo-fg-muted); }

/* ---------- blueprint grid (cards divided by hairlines) ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--agendo-border); border: 1px solid var(--agendo-border); }
.grid-cell { background: var(--agendo-ink); padding: 32px 30px 38px; position: relative; }
.grid-cell.accent::before { content: ""; position: absolute; top: 0; left: 0; width: 36px; height: 2px; background: var(--agendo-brand); }
.grid-cell .num { font-family: var(--agendo-font-mono); font-size: 12px; color: var(--agendo-fg-faint); margin-bottom: 20px; }
.grid-cell h3 { font-size: 22px; letter-spacing: -0.02em; margin-bottom: 14px; }
.grid-cell p { margin: 0; font-weight: 300; font-size: 16px; line-height: 1.55; color: var(--agendo-fg-muted); }

/* ---------- card ---------- */
.card { position: relative; background: var(--agendo-bg-surface); border: 1px solid var(--agendo-border); padding: 32px; transition: border-color var(--agendo-dur-base) var(--agendo-ease-ui), transform var(--agendo-dur-base) var(--agendo-ease-ui); }
.card.accent::before { content: ""; position: absolute; top: 0; left: 0; width: 40px; height: 2px; background: var(--agendo-brand); }
.card.interactive:hover { border-color: var(--agendo-border-strong); transform: translateY(-2px); }
.card h3 { font-size: 22px; letter-spacing: -0.02em; margin: 8px 0 16px; }
.card p { margin: 0; font-weight: 300; font-size: 16px; line-height: 1.55; color: var(--agendo-fg-muted); }

/* ---------- engagement / progress track ---------- */
.track { display: flex; align-items: center; max-width: 860px; }
.track .node { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; border: 1px solid var(--agendo-border-strong); background: transparent; }
.track .node.done { background: var(--agendo-brand); border-color: var(--agendo-brand); }
.track .node.now { background: var(--agendo-signal); border-color: var(--agendo-signal); box-shadow: 0 0 0 5px var(--agendo-orange-tint); }
.track .seg { height: 1px; flex: 1 1 auto; margin: 0 3px; background: var(--agendo-border-strong); }
.track .seg.fill { background: var(--agendo-brand); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 44px; }
.step .k { font-family: var(--agendo-font-mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--agendo-brand); margin-bottom: 12px; }
.step .k.now { color: var(--agendo-signal); }
.step .v { font-weight: 300; font-size: 16px; color: var(--agendo-fg); }

/* ---------- stats ---------- */
.stats { display: flex; gap: 72px; flex-wrap: wrap; }
.stat .value { font-family: var(--agendo-font-display); font-weight: 500; font-size: clamp(38px, 6vw, 56px); letter-spacing: -0.04em; line-height: 0.9; color: var(--agendo-fg); }
.stat .value.hi { color: var(--agendo-signal); }
.stat .label { font-family: var(--agendo-font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--agendo-fg-muted); margin-top: 10px; max-width: 22ch; }
.note { margin-top: 48px; font-weight: 300; font-size: 14px; line-height: 1.5; color: var(--agendo-fg-muted); max-width: 60ch; }

/* ---------- contact / form ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 0.95fr; gap: 72px; align-items: start; }
.steps-list { display: flex; flex-direction: column; gap: 1px; background: var(--agendo-border); border: 1px solid var(--agendo-border); }
.steps-list .row { background: var(--agendo-ink); padding: 24px 26px; display: grid; grid-template-columns: 44px 1fr; gap: 20px; align-items: baseline; }
.steps-list .n { font-family: var(--agendo-font-display); font-weight: 500; font-size: 28px; color: var(--agendo-brand); letter-spacing: -0.03em; }
.steps-list h3 { font-size: 20px; letter-spacing: -0.02em; margin-bottom: 8px; }
.steps-list p { margin: 0; font-weight: 300; font-size: 15px; line-height: 1.5; color: var(--agendo-fg-muted); }

.form { padding: 36px 34px; }
.form .eyebrow { display: block; margin-bottom: 22px; }
.field-stack { display: flex; flex-direction: column; gap: 14px; }
.field { width: 100%; background: var(--agendo-surface); border: 1px solid var(--agendo-border); border-radius: var(--agendo-radius-sm); color: var(--agendo-text); font-family: var(--agendo-font-display); font-weight: 300; font-size: 16px; padding: 13px 14px; box-sizing: border-box; outline: none; transition: border-color var(--agendo-dur-fast) var(--agendo-ease-ui); }
.field::placeholder { color: var(--agendo-fg-faint); }
.field:focus { border-color: var(--agendo-brand); }
textarea.field { min-height: 92px; resize: vertical; }
.form .btn { width: 100%; margin-top: 20px; }
.form-status { font-family: var(--agendo-font-mono); font-size: 12px; letter-spacing: 0.04em; margin-top: 14px; line-height: 1.5; min-height: 1em; }
.form-status.err { color: var(--agendo-signal); }
.form-status.ok { color: var(--agendo-brand); }
.form-sent { min-height: 320px; display: flex; flex-direction: column; justify-content: center; }
.form-sent h3 { font-size: 24px; letter-spacing: -0.02em; margin: 20px 0 10px; }
.form-sent p { margin: 0; font-weight: 300; font-size: 16px; line-height: 1.5; color: var(--agendo-fg-muted); }
.hidden { display: none !important; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--agendo-border); }
.site-footer .wrap { padding-top: 48px; padding-bottom: 64px; display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; align-items: flex-end; }
.footer-meta { margin-top: 20px; font-family: var(--agendo-font-mono); font-size: 12px; letter-spacing: 0.06em; color: var(--agendo-fg-muted); display: flex; gap: 14px; flex-wrap: wrap; }
.footer-meta .sep { color: var(--agendo-fg-faint); }
.footer-mail { color: inherit; text-decoration: none; transition: color var(--agendo-dur-fast) var(--agendo-ease-ui); }
.footer-mail:hover { color: var(--agendo-brand); }
.footer-payoff { font-family: var(--agendo-font-display); font-weight: 400; font-size: 16px; letter-spacing: -0.02em; color: var(--agendo-fg-muted); }
.foot-baseline { height: 2px; width: 132px; background: var(--agendo-brand); margin-top: 14px; }

/* ============================================================
   CHATBOT — qualifier widget
   ============================================================ */
/* ---- avatar mark (shared by launcher, header, inline) ---- */
.chat-avatar { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto;
  width: 30px; height: 30px; background: var(--agendo-brand); color: var(--agendo-on-brand);
  font-family: var(--agendo-font-display); font-weight: 500; font-size: 17px; letter-spacing: -0.05em; }
.chat-avatar.sm { width: 24px; height: 24px; font-size: 14px; }

/* ---- launcher ---- */
.chat-launch { position: fixed; right: 24px; bottom: 24px; z-index: 60; display: inline-flex; align-items: center; gap: 11px;
  font-family: var(--agendo-font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
  background: var(--agendo-surface); color: var(--agendo-fg); border: 1px solid var(--agendo-brand); border-radius: 0; padding: 10px 16px 10px 10px; cursor: pointer;
  transition: border-color var(--agendo-dur-fast) var(--agendo-ease-ui), transform var(--agendo-dur-fast) var(--agendo-ease-ui), background var(--agendo-dur-fast); }
.chat-launch:hover { background: var(--agendo-ink); transform: translateY(-1px); }
.chat-launch:active { transform: translateY(1px); }
.chat-launch-text { white-space: nowrap; }
.chat-launch-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--agendo-brand); position: relative; }
.chat-launch-dot::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--agendo-brand); opacity: 0.6; }
@media (prefers-reduced-motion: no-preference) {
  .chat-launch-dot::after { animation: agendo-ping 2s var(--agendo-ease-ui) infinite; }
  @keyframes agendo-ping { 0% { transform: scale(0.6); opacity: 0.7; } 100% { transform: scale(1.8); opacity: 0; } }
}

/* ---- auto greeting bubble ---- */
.chat-bubble { position: fixed; right: 24px; bottom: 78px; z-index: 60; width: min(300px, calc(100vw - 40px));
  background: var(--agendo-surface); border: 1px solid var(--agendo-border-strong); border-left: 2px solid var(--agendo-brand);
  padding: 16px 18px 14px; cursor: pointer; font-weight: 300; font-size: 14px; line-height: 1.5; color: var(--agendo-text);
  transition: transform var(--agendo-dur-base) var(--agendo-ease-ui), opacity var(--agendo-dur-base); }
.chat-bubble[hidden] { display: none; }
.chat-bubble-cta { display: block; margin-top: 10px; font-family: var(--agendo-font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--agendo-brand); }
.chat-bubble-close { position: absolute; top: 6px; right: 8px; background: transparent; border: 0; color: var(--agendo-fg-muted); font-size: 17px; line-height: 1; cursor: pointer; padding: 2px 4px; }
.chat-bubble-close:hover { color: var(--agendo-fg); }

/* ---- inline entry point ---- */
.chat-inline { display: inline-flex; align-items: center; gap: 10px; background: transparent; border: 1px solid var(--agendo-border-strong);
  color: var(--agendo-fg); font-family: var(--agendo-font-mono); font-size: 12px; letter-spacing: 0.06em; padding: 10px 14px; cursor: pointer;
  transition: border-color var(--agendo-dur-fast), color var(--agendo-dur-fast); }
.chat-inline:hover { border-color: var(--agendo-brand); color: var(--agendo-brand); }

/* ---- panel ---- */
.chat-panel { position: fixed; right: 24px; bottom: 24px; z-index: 61; width: min(390px, calc(100vw - 32px)); height: min(580px, calc(100vh - 32px));
  background: var(--agendo-ink); border: 1px solid var(--agendo-border-strong); display: flex; flex-direction: column;
  transform: translateY(12px); opacity: 0; pointer-events: none; transition: transform 220ms var(--agendo-ease-ui), opacity 220ms var(--agendo-ease-ui); }
.chat-panel.open { transform: none; opacity: 1; pointer-events: auto; }
.chat-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--agendo-border); }
.chat-head .who { display: flex; align-items: center; gap: 11px; }
.chat-head .title { font-family: var(--agendo-font-display); font-weight: 500; font-size: 15px; letter-spacing: -0.02em; display: flex; align-items: center; gap: 8px; }
.ai-badge { font-family: var(--agendo-font-mono); font-size: 9px; letter-spacing: 0.12em; color: var(--agendo-brand); border: 1px solid var(--agendo-brand); padding: 2px 5px; line-height: 1; }
.chat-head .sub { font-family: var(--agendo-font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--agendo-fg-muted); margin-top: 3px; display: flex; align-items: center; gap: 6px; }
.online { width: 6px; height: 6px; border-radius: 50%; background: var(--agendo-brand); }
.chat-close { background: transparent; border: 0; color: var(--agendo-fg-muted); font-size: 22px; line-height: 1; cursor: pointer; padding: 4px; }
.chat-close:hover { color: var(--agendo-fg); }
.chat-body { flex: 1 1 auto; overflow-y: auto; padding: 20px 18px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 86%; font-size: 14px; line-height: 1.5; padding: 11px 13px; border-radius: 0; font-weight: 300; white-space: pre-wrap; }
.msg.bot { align-self: flex-start; background: var(--agendo-surface); border: 1px solid var(--agendo-border); color: var(--agendo-text); border-left: 2px solid var(--agendo-brand); }
.msg.user { align-self: flex-end; background: var(--agendo-green-tint); border: 1px solid var(--agendo-brand); color: var(--agendo-text); }
.msg.typing { display: inline-flex; gap: 4px; align-items: center; }
.msg.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--agendo-fg-muted); display: inline-block; }
@media (prefers-reduced-motion: no-preference) {
  .msg.typing span { animation: agendo-blink 1.2s infinite both; }
  .msg.typing span:nth-child(2) { animation-delay: 0.2s; }
  .msg.typing span:nth-child(3) { animation-delay: 0.4s; }
  @keyframes agendo-blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }
}
.chat-foot { border-top: 1px solid var(--agendo-border); padding: 12px 14px 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.chip { font-family: var(--agendo-font-mono); font-size: 11px; letter-spacing: 0.06em; background: transparent; color: var(--agendo-fg-muted); border: 1px solid var(--agendo-border-strong); padding: 7px 11px; cursor: pointer; border-radius: 0; transition: color var(--agendo-dur-fast), border-color var(--agendo-dur-fast); }
.chip:hover { color: var(--agendo-brand); border-color: var(--agendo-brand); }
.chat-input-row { display: flex; gap: 8px; }
.chat-input { flex: 1 1 auto; background: var(--agendo-surface); border: 1px solid var(--agendo-border); color: var(--agendo-text); font-family: var(--agendo-font-display); font-weight: 300; font-size: 14px; padding: 11px 12px; outline: none; }
.chat-input:focus { border-color: var(--agendo-brand); }
.chat-input:disabled { opacity: 0.5; }
.chat-send { background: var(--agendo-brand); color: var(--agendo-on-brand); border: 0; padding: 0 16px; font-family: var(--agendo-font-mono); font-size: 16px; cursor: pointer; }
.chat-send:hover { background: var(--agendo-brand-hover); }
.chat-send:disabled { opacity: 0.5; cursor: not-allowed; }
.chat-disclaimer { margin-top: 9px; font-family: var(--agendo-font-mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--agendo-fg-faint); text-align: center; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: 28px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats { gap: 40px 56px; }
}
@media (max-width: 760px) {
  :root { --nav-h: 60px; }
  .nav-toggle { display: inline-flex; }
  .nav-links { position: fixed; inset: var(--nav-h) 0 auto 0; flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--agendo-ink); border-bottom: 1px solid var(--agendo-border); padding: 8px var(--site-gut) 20px;
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: transform 200ms var(--agendo-ease-ui), opacity 200ms; }
  .nav-open .nav-links { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links .nav-link { width: 100%; padding: 16px 0; border-bottom: 1px solid var(--agendo-border); font-size: 13px; }
  .nav-links .nav-link.active { border-bottom-color: var(--agendo-border); color: var(--agendo-brand); }
  .nav-links .btn { width: 100%; margin-top: 16px; }
  .section .wrap { padding-top: 60px; padding-bottom: 60px; }
  .hero .wrap { padding-top: 72px; padding-bottom: 64px; }
  .grid-3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 24px; }
  .stat .value { font-size: 44px; }
  .form { padding: 28px 22px; }
  .chat-launch { right: 16px; bottom: 16px; }
  .chat-panel { right: 8px; bottom: 8px; left: 8px; width: auto; height: min(72vh, 560px); }
}
@media (max-width: 420px) {
  .steps { grid-template-columns: 1fr; }
  .hero .cta-row .btn { width: 100%; }
}