/* ══════════════════════════════════════════════════════════════════
   Ask-a-Friend MCP — "Phone a Friend" design system
   Two-character colour language:
     "you"    (cool teal)  = the agent asking
     "friend" (warm coral) = the model answering
   ══════════════════════════════════════════════════════════════════ */

:root {
  /* Surfaces — warm-dark, not cold grey */
  --ink:        #0b0a10;
  --ink-2:      #100e18;
  --ink-3:      #16131f;
  --surface:    rgb(255 255 255 / 4%);
  --surface-2:  rgb(255 255 255 / 6.5%);
  --line:       rgb(255 255 255 / 9%);
  --line-warm:  rgb(255 173 150 / 18%);

  /* Characters */
  --you:        #4addcd;
  --you-dim:    #2aa093;
  --friend:     #ff7d6b;
  --friend-dim: #d85a49;
  --amber:      #ffbe6b;
  --violet:     #a78bfa;

  /* Text */
  --fg:         #f6f3f0;
  --fg-2:       #b3aec0;
  --fg-3:       #7d7791;

  /* Semantic */
  --ok:         #57d98a;
  --warn:       #ffbe6b;
  --bad:        #ff6b6b;

  --grad: linear-gradient(100deg, var(--you) 0%, var(--amber) 48%, var(--friend) 100%);

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --r-sm: 8px;
  --r:    14px;
  --r-lg: 22px;
  --r-xl: 30px;

  --shadow:    0 18px 50px -18px rgb(0 0 0 / 75%);
  --shadow-lg: 0 34px 90px -30px rgb(0 0 0 / 85%);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t:    0.28s var(--ease);

  --shell: 1180px;
}

/* ── Reset ─────────────────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { line-height: 1.12; margin: 0; letter-spacing: -0.025em; font-weight: 700; }
p { margin: 0; }
img { max-width: 100%; display: block; }

code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.1em 0.38em;
  color: var(--amber);
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

.skip-link {
  position: absolute; top: -100px; left: 16px; z-index: 200;
  background: var(--you); color: #04211e; font-weight: 700;
  padding: 10px 18px; border-radius: 0 0 var(--r-sm) var(--r-sm);
}
.skip-link:focus { top: 0; }

:focus-visible {
  outline: 2px solid var(--you);
  outline-offset: 3px;
  border-radius: 4px;
}

.shell {
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ── Ambient background ────────────────────────────────────────── */

.bg-field {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}
.orb-you    { width: 46vw; height: 46vw; top: -14vw; left: -10vw;  background: var(--you); }
.orb-friend { width: 40vw; height: 40vw; top: 26vh;  right: -12vw; background: var(--friend); opacity: 0.32; }
.orb-violet { width: 38vw; height: 38vw; bottom: -14vw; left: 24vw; background: var(--violet); opacity: 0.22; }

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(ellipse 80% 55% at 50% 0%, #000 20%, transparent 78%);
  opacity: 0.5;
}

@media (prefers-reduced-motion: no-preference) {
  .orb { animation: drift 26s ease-in-out infinite alternate; }
  .orb-friend { animation-duration: 32s; animation-delay: -8s; }
  .orb-violet { animation-duration: 38s; animation-delay: -16s; }
}

@keyframes drift {
  to { transform: translate3d(6%, 8%, 0) scale(1.15); }
}

/* ── Navigation ────────────────────────────────────────────────── */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 4vw, 2.2rem);
  background: color-mix(in srgb, var(--ink) 72%, transparent);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-mark {
  position: relative;
  width: 30px; height: 20px;
  flex: none;
}
.brand-dot {
  position: absolute;
  width: 18px; height: 18px;
  border-radius: 50%;
  top: 1px;
  border: 2px solid var(--ink);
}
.brand-dot-you    { left: 0;  background: var(--you); }
.brand-dot-friend { left: 11px; background: var(--friend); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  color: var(--fg-2);
  text-decoration: none;
  font-size: 0.895rem;
  font-weight: 500;
  padding: 0.45rem 0.7rem;
  border-radius: var(--r-sm);
  transition: color var(--t), background var(--t);
  white-space: nowrap;
}
.nav-link:hover { color: var(--fg); background: var(--surface); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 38px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px; width: 18px;
  margin-inline: auto;
  background: var(--fg);
  border-radius: 2px;
  transition: transform var(--t);
}

/* ── Buttons ───────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.78rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 100px;
  font-family: inherit;
  font-size: 0.945rem;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--t), box-shadow var(--t), background var(--t), border-color var(--t);
}
.btn-sm { padding: 0.5rem 1rem; font-size: 0.86rem; }

.btn-primary {
  background: var(--grad);
  color: #1a0d08;
  box-shadow: 0 10px 28px -10px color-mix(in srgb, var(--friend) 70%, transparent);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px -12px color-mix(in srgb, var(--friend) 85%, transparent);
}

.btn-ghost {
  background: var(--surface);
  border-color: var(--line);
  color: var(--fg);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: var(--surface-2);
  border-color: color-mix(in srgb, var(--you) 45%, transparent);
  transform: translateY(-2px);
}

/* ── Sections ──────────────────────────────────────────────────── */

.section { padding: clamp(4.5rem, 10vw, 8rem) 0; position: relative; }
.section-alt::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent, rgb(255 255 255 / 2.5%) 18%, rgb(255 255 255 / 2.5%) 82%, transparent);
  pointer-events: none;
}

.section-head {
  max-width: 660px;
  margin: 0 auto clamp(2.5rem, 5vw, 4rem);
  text-align: center;
}

.tag {
  display: inline-block;
  font-size: 0.735rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--you);
  background: color-mix(in srgb, var(--you) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--you) 26%, transparent);
  border-radius: 100px;
  padding: 0.3rem 0.85rem;
  margin-bottom: 1.1rem;
}

.section-title {
  font-size: clamp(2rem, 5.2vw, 3.3rem);
  margin-bottom: 1rem;
}

.section-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--fg-2);
}

/* ── Hero ──────────────────────────────────────────────────────── */

.hero {
  padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3rem, 7vw, 5.5rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.83rem;
  font-weight: 560;
  color: var(--fg-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.38rem 0.95rem;
  margin-bottom: 1.5rem;
}
.eyebrow-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 20%, transparent);
}

.hero-title {
  font-size: clamp(2.6rem, 6.6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 1.4rem;
}

.hero-sub {
  font-size: clamp(1.03rem, 2.2vw, 1.22rem);
  color: var(--fg-2);
  max-width: 54ch;
  margin-bottom: 2rem;
}
.hero-sub strong { color: var(--fg); font-weight: 650; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2.6rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.2rem, 4vw, 2.6rem);
  margin: 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}
.hero-stats .stat { margin: 0; }
.hero-stats dt {
  font-size: 0.755rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-3);
  margin-bottom: 0.3rem;
}
.hero-stats dd {
  margin: 0;
  font-size: 1.28rem;
  font-weight: 750;
  color: var(--fg);
}

/* ── Hero chat ─────────────────────────────────────────────────── */

.hero-demo { position: relative; }

.chat {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  padding: clamp(1.1rem, 3vw, 1.7rem);
  background: color-mix(in srgb, var(--ink-2) 82%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.chat-row { display: flex; gap: 0.7rem; align-items: flex-start; }
.chat-friend { flex-direction: row; }
.chat-you    { flex-direction: row; }
.chat-tool   { justify-content: center; }

.avatar {
  flex: none;
  width: 34px; height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 1.02rem;
  border: 1px solid var(--line);
}
.avatar-you    { background: color-mix(in srgb, var(--you) 16%, var(--ink-3)); }
.avatar-friend { background: color-mix(in srgb, var(--friend) 18%, var(--ink-3)); }

.bubble {
  position: relative;
  padding: 0.8rem 1rem;
  border-radius: var(--r-lg);
  font-size: 0.925rem;
  line-height: 1.55;
  border: 1px solid var(--line);
  background: var(--surface);
  max-width: 100%;
}
.bubble-you {
  border-top-left-radius: 6px;
  border-color: color-mix(in srgb, var(--you) 26%, transparent);
  background: color-mix(in srgb, var(--you) 8%, var(--surface));
}
.bubble-friend {
  border-top-left-radius: 6px;
  border-color: color-mix(in srgb, var(--friend) 30%, transparent);
  background: color-mix(in srgb, var(--friend) 9%, var(--surface));
}
.bubble-final { color: var(--fg-2); font-style: italic; }

.bubble-who {
  display: block;
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 0.35rem;
}
.bubble-who em { font-style: normal; color: var(--friend); text-transform: none; letter-spacing: 0; }

.bubble-code {
  margin: 0.6rem 0 0;
  padding: 0.6rem 0.75rem;
  background: rgb(0 0 0 / 38%);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow-x: auto;
}
.bubble-code code {
  background: none; border: 0; padding: 0;
  color: var(--you);
  font-size: 0.8rem;
  white-space: pre;
}

.verdict {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.7rem;
  padding: 0.35rem 0.75rem;
  background: color-mix(in srgb, var(--ok) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--ok) 32%, transparent);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
}
.verdict code { background: none; border: 0; color: var(--ok); padding: 0; }
.verdict-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok);
  flex: none;
}

.tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.775rem;
  color: var(--fg-3);
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: 100px;
  padding: 0.32rem 0.85rem;
}
.tool-chip code { background: none; border: 0; padding: 0; color: var(--amber); }
.tool-spark {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  flex: none;
}

@media (prefers-reduced-motion: no-preference) {
  .tool-spark { animation: pulse 1.5s ease-in-out infinite; }
  .chat-row {
    animation: bubble-in 0.6s var(--ease) backwards;
  }
  .chat-row:nth-child(1) { animation-delay: 0.15s; }
  .chat-row:nth-child(2) { animation-delay: 0.85s; }
  .chat-row:nth-child(3) { animation-delay: 1.35s; }
  .chat-row:nth-child(4) { animation-delay: 2.3s; }
}

@keyframes pulse {
  50% { opacity: 0.25; transform: scale(0.7); }
}
@keyframes bubble-in {
  from { opacity: 0; transform: translateY(14px) scale(0.97); }
}

/* ── Analogy block ─────────────────────────────────────────────── */

.analogy {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
  padding: clamp(1.4rem, 3.5vw, 2.3rem);
  margin-bottom: clamp(2rem, 4vw, 3rem);
  background: linear-gradient(120deg,
    color-mix(in srgb, var(--you) 9%, transparent),
    color-mix(in srgb, var(--friend) 9%, transparent));
  border: 1px solid var(--line-warm);
  border-radius: var(--r-xl);
}
.analogy-icon {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  flex: none;
  line-height: 1;
}
.analogy-body { flex: 1; min-width: 0; }
.analogy h3 {
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  margin-bottom: 0.5rem;
}
.analogy p { color: var(--fg-2); }
.analogy strong { color: var(--fg); }

/* ── Container-query card grid ─────────────────────────────────── */

.cq-grid {
  container-type: inline-size;
  display: grid;
  gap: 1.1rem;
  grid-template-columns: 1fr;
  list-style: none;
  padding: 0;
  margin: 0;
}

@container (min-width: 700px) {
  .cq-grid { grid-template-columns: repeat(3, 1fr); }
}
@container (min-width: 480px) and (max-width: 699px) {
  .cq-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── Steps ─────────────────────────────────────────────────────── */

.step-card {
  position: relative;
  padding: 1.6rem 1.4rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform var(--t), border-color var(--t), background var(--t);
}
.step-card:hover {
  transform: translateY(-4px);
  background: var(--surface-2);
  border-color: color-mix(in srgb, var(--you) 34%, transparent);
}
.step-num {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--grad);
  color: #1a0d08;
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 0.9rem;
}
.step-card h3 { font-size: 1.08rem; margin-bottom: 0.5rem; }
.step-card p { color: var(--fg-2); font-size: 0.935rem; }

.footnote {
  text-align: center;
  margin-top: clamp(1.8rem, 4vw, 2.6rem);
  font-size: 1.06rem;
  color: var(--fg-2);
}
.footnote strong { color: var(--fg); }

/* ── Compare ───────────────────────────────────────────────────── */

.compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: stretch;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.compare-card {
  padding: 1.6rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--surface);
}
.compare-card header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
}
.compare-card h3 { font-size: 1.12rem; }
.compare-badge { font-size: 1.5rem; line-height: 1; }
.compare-card ul { margin: 0; padding-left: 1.15rem; color: var(--fg-2); }
.compare-card li { margin-bottom: 0.5rem; font-size: 0.935rem; }
.compare-card li::marker { color: var(--fg-3); }

.compare-bad  { border-color: color-mix(in srgb, var(--bad) 22%, transparent); }
.compare-good {
  border-color: color-mix(in srgb, var(--ok) 30%, transparent);
  background: color-mix(in srgb, var(--ok) 6%, var(--surface));
}

.compare-vs {
  display: grid;
  place-items: center;
  align-self: center;
}
.compare-vs span {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--ink-3);
  border: 1px solid var(--line);
  font-size: 0.8rem;
  font-weight: 750;
  color: var(--fg-3);
  text-transform: uppercase;
}

/* ── Notes ─────────────────────────────────────────────────────── */

.note {
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform var(--t), border-color var(--t);
}
.note:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--friend) 32%, transparent);
}
.note-icon { font-size: 1.6rem; display: block; margin-bottom: 0.7rem; }
.note h4 { font-size: 1.02rem; margin-bottom: 0.45rem; }
.note p { color: var(--fg-2); font-size: 0.915rem; }

/* ── Demo ──────────────────────────────────────────────────────── */

.demo-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: color-mix(in srgb, var(--ink-2) 88%, transparent);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.demo-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0.85rem 1.1rem;
  background: rgb(0 0 0 / 28%);
  border-bottom: 1px solid var(--line);
}

.demo-chrome { display: flex; gap: 6px; }
.demo-chrome span {
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--line);
}
.demo-chrome span:nth-child(1) { background: color-mix(in srgb, var(--bad) 65%, transparent); }
.demo-chrome span:nth-child(2) { background: color-mix(in srgb, var(--warn) 65%, transparent); }
.demo-chrome span:nth-child(3) { background: color-mix(in srgb, var(--ok) 65%, transparent); }

.demo-picker { margin-left: auto; }
.demo-picker select {
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 560;
  color: var(--fg);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
}
.demo-picker select:hover { border-color: color-mix(in srgb, var(--you) 45%, transparent); }
.demo-picker option { background: var(--ink-3); color: var(--fg); }

.model-chip {
  font-family: var(--mono);
  font-size: 0.775rem;
  font-weight: 600;
  color: var(--amber);
  background: color-mix(in srgb, var(--amber) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--amber) 30%, transparent);
  border-radius: 100px;
  padding: 0.32rem 0.8rem;
}

.demo-body {
  display: grid;
  grid-template-columns: 1fr 1fr 1.15fr;
  gap: 0;
}
.demo-pane {
  padding: 1.25rem;
  border-right: 1px solid var(--line);
  min-width: 0;
}
.demo-pane:last-child { border-right: 0; }

.pane-label {
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 0.85rem;
}

.field {
  width: 100%;
  background: rgb(0 0 0 / 30%);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.875rem;
  padding: 0.7rem 0.8rem;
  margin-bottom: 0.7rem;
  resize: vertical;
}
.field:focus { outline: none; border-color: var(--you); }
.field-mono { font-family: var(--mono); font-size: 0.78rem; line-height: 1.55; }

/* Pipeline */
.pipe { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.3rem; }

.pipe-step {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.5rem 0.6rem;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  opacity: 0.4;
  transition: opacity var(--t), background var(--t), border-color var(--t);
}
.pipe-step.active {
  opacity: 1;
  background: color-mix(in srgb, var(--you) 10%, transparent);
  border-color: color-mix(in srgb, var(--you) 34%, transparent);
}
.pipe-step.done { opacity: 1; }
.pipe-step.done .pipe-ico { filter: none; }

.pipe-ico { font-size: 1rem; flex: none; }
.pipe-text { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.pipe-text b { font-size: 0.855rem; font-weight: 620; }
.step-detail {
  font-size: 0.755rem;
  color: var(--fg-3);
  font-family: var(--mono);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pipe-step.done .step-detail { color: var(--ok); }
.step-timer {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-3);
  flex: none;
}

/* Output */
.output {
  background: rgb(0 0 0 / 38%);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 0.9rem;
  font-family: var(--mono);
  font-size: 0.775rem;
  line-height: 1.65;
  color: var(--fg-2);
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 250px;
  max-height: 340px;
  overflow-y: auto;
}
.output.streaming::after {
  content: "▋";
  color: var(--you);
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-top: 0.8rem;
  opacity: 0;
  transition: opacity var(--t);
}
.stats.visible { opacity: 1; }
.stats > div {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  text-align: center;
}
.stats .k {
  font-size: 0.63rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-3);
}
.stats .v {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 650;
  color: var(--you);
}

/* ── Friends ───────────────────────────────────────────────────── */

.friend-card {
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform var(--t), border-color var(--t), background var(--t);
}
.friend-card:hover {
  transform: translateY(-5px);
  background: var(--surface-2);
  border-color: color-mix(in srgb, var(--friend) 38%, transparent);
}
.friend-top {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}
.friend-face {
  font-size: 1.7rem;
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 14px;
  flex: none;
}
.friend-card h3 { font-size: 1.06rem; margin-bottom: 0.15rem; }
.friend-card > p { color: var(--fg-2); font-size: 0.915rem; }
.friend-role {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--amber);
  margin-bottom: 0.6rem !important;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}
.chips li {
  font-size: 0.715rem;
  font-weight: 600;
  color: var(--fg-2);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.22rem 0.62rem;
}

/* ── Setup ─────────────────────────────────────────────────────── */

.deploy {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  margin-bottom: 2rem;
}
.deploy-step {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  flex: none;
  border-radius: 50%;
  background: var(--grad);
  color: #1a0d08;
  font-weight: 800;
}
.deploy > div { flex: 1; min-width: 0; }
.deploy h3 { font-size: 1.2rem; margin-bottom: 0.8rem; }
.deploy-note { font-size: 0.875rem; color: var(--fg-3); margin-top: 0.6rem; }

.code-block {
  margin: 0;
  padding: 1rem 1.1rem;
  background: rgb(0 0 0 / 42%);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow-x: auto;
}
.code-block code {
  background: none; border: 0; padding: 0;
  color: var(--you);
  font-size: 0.83rem;
  line-height: 1.7;
  white-space: pre;
}

.code-wrap { position: relative; }
.copy-btn {
  position: absolute;
  top: 0.6rem; right: 0.6rem;
  z-index: 2;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--fg-2);
  font-family: inherit;
  font-size: 0.755rem;
  font-weight: 620;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: color var(--t), border-color var(--t);
}
.copy-btn:hover { color: var(--fg); border-color: var(--you); }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.9rem;
}
.tab {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 100px;
  color: var(--fg-2);
  font-family: inherit;
  font-size: 0.83rem;
  font-weight: 600;
  padding: 0.42rem 0.95rem;
  cursor: pointer;
  transition: color var(--t), background var(--t), border-color var(--t);
}
.tab:hover { color: var(--fg); }
.tab.active {
  color: #1a0d08;
  background: var(--grad);
  border-color: transparent;
}

.closer {
  text-align: center;
  padding: clamp(2rem, 5vw, 3.2rem);
  margin-top: 1.5rem;
  background: linear-gradient(120deg,
    color-mix(in srgb, var(--you) 10%, transparent),
    color-mix(in srgb, var(--friend) 10%, transparent));
  border: 1px solid var(--line-warm);
  border-radius: var(--r-xl);
}
.closer h3 { font-size: clamp(1.4rem, 3.5vw, 2rem); margin-bottom: 0.6rem; }
.closer p { color: var(--fg-2); margin-bottom: 1.5rem; }
.closer-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; justify-content: center; }

/* ── Footer ────────────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--line);
  padding: 2.8rem 0 2rem;
  background: rgb(0 0 0 / 25%);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.8rem;
}
.footer-brand { font-weight: 750; margin-bottom: 0.3rem; }
.footer-tag { color: var(--fg-3); font-size: 0.895rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer-links a {
  color: var(--fg-2);
  text-decoration: none;
  font-size: 0.895rem;
  transition: color var(--t);
}
.footer-links a:hover { color: var(--you); }
.footer-legal {
  text-align: center;
  font-size: 0.8rem;
  color: var(--fg-3);
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
}

/* ── Toast ─────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  translate: -50% 0;
  z-index: 300;
  background: var(--ok);
  color: #04210f;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.65rem 1.3rem;
  border-radius: 100px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t), translate var(--t);
}
.toast.show { opacity: 1; translate: -50% -8px; }

/* ══ SCROLL-DRIVEN REVEALS ══════════════════════════════════════
   Progressive enhancement: pure CSS, no JS, no library.
   Gated on both reduced-motion and full scroll-timeline support —
   the (animation-range: entry) probe filters out partial support.
   Without support, content is simply visible.
   ════════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: no-preference) {
  @supports ((animation-timeline: view()) and (animation-range: entry)) {

    @keyframes reveal-in {
      from {
        opacity: 0;
        transform: translateY(34px);
      }
    }

    .reveal {
      animation: reveal-in auto linear backwards;
      /* declared AFTER the shorthand so it isn't reset */
      animation-timeline: view();
      animation-range: entry 0% cover 22%;
    }
  }
}

/* ── Responsive ────────────────────────────────────────────────── */

@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-demo { order: -1; }
  .demo-body { grid-template-columns: 1fr 1fr; }
  .demo-output { grid-column: 1 / -1; border-top: 1px solid var(--line); }
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    padding: 0.8rem 1rem 1.2rem;
    background: color-mix(in srgb, var(--ink) 96%, transparent);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-link { padding: 0.7rem 0.8rem; }
  .btn-ghost.btn-sm { text-align: center; margin-top: 0.4rem; }

  .compare { grid-template-columns: 1fr; }
  .compare-vs { padding: 0.3rem 0; }
  .analogy { flex-direction: column; text-align: center; }
}

@media (max-width: 680px) {
  .demo-body { grid-template-columns: 1fr; }
  .demo-pane { border-right: 0; border-bottom: 1px solid var(--line); }
  .demo-picker { margin-left: 0; width: 100%; }
  .demo-picker select { width: 100%; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 1.2rem; }
}

@media print {
  .bg-field, .navbar, .toast { display: none; }
  body { background: #fff; color: #000; }
}