/* ==========================================================================
   Nexus Flow — Brand design system
   Palette sampled from the logo: cobalt blue + slate + deep navy + cool silver.
   Loaded alongside Tailwind CDN (tokens mirrored in each page's tailwind.config).
   ========================================================================== */

:root {
  /* Cobalt (primary) */
  --cobalt-50:  #EAF1FB;
  --cobalt-100: #D4E2F6;
  --cobalt-200: #A9C5ED;
  --cobalt-300: #7DA8E4;
  --cobalt-400: #4E84D6;
  --cobalt-500: #1A5CB0;
  --cobalt-600: #1450A0;
  --cobalt-700: #0F3E7A;
  --cobalt-800: #0B2E5A;
  --cobalt-900: #07203E;

  /* Ink / deep navy (dark sections) */
  --ink-700: #2A2E3A;
  --ink-800: #1E2230;
  --ink-900: #141826;

  /* Neutrals */
  --slate:        #5E5E6E;
  --silver-light: #EEF1F6;
  --silver:       #D7D9E2;
  --silver-dark:  #C8CDD8;

  /* Layered, cobalt-tinted shadows (never flat) */
  --shadow-sm: 0 1px 2px rgba(20,40,80,.06), 0 2px 6px rgba(26,92,176,.06);
  --shadow-md: 0 4px 10px rgba(20,40,80,.06), 0 14px 30px rgba(26,92,176,.10);
  --shadow-lg: 0 8px 20px rgba(20,40,80,.08), 0 26px 60px rgba(26,92,176,.16);
  --shadow-cobalt: 0 8px 18px rgba(26,92,176,.30), 0 2px 6px rgba(15,62,122,.24);

  --ease-spring: cubic-bezier(.16, 1, .3, 1);
}

* { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, sans-serif;
  color: var(--ink-800);
  background: #ffffff;
  line-height: 1.7;
}

h1, h2, h3, h4, .font-display {
  font-family: "Space Grotesk", "Inter", sans-serif;
  line-height: 1.08;
}
h1, h2 { letter-spacing: -0.03em; }
h3 { letter-spacing: -0.02em; }

/* ---------- Layout helpers ---------- */
.container-x { width: 100%; max-width: 80rem; margin-inline: auto; padding-inline: 1.5rem; }
.section-y  { padding-block: clamp(4.5rem, 9vw, 8rem); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--cobalt-600);
}
.eyebrow::before {
  content: ""; width: 1.5rem; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--cobalt-500), transparent);
}
.eyebrow--light { color: var(--cobalt-200); }
.eyebrow--light::before { background: linear-gradient(90deg, var(--cobalt-300), transparent); }

.text-gradient {
  background: linear-gradient(100deg, var(--cobalt-400), var(--cobalt-600) 60%, var(--cobalt-300));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Buttons (hover + focus-visible + active on all) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: .98rem;
  padding: .85rem 1.5rem; border-radius: .85rem; cursor: pointer;
  border: 1px solid transparent; will-change: transform;
  transition: transform .25s var(--ease-spring), box-shadow .25s var(--ease-spring),
              background-color .25s var(--ease-spring), color .25s var(--ease-spring),
              border-color .25s var(--ease-spring);
}
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px #fff, 0 0 0 5px var(--cobalt-400); }

.btn-primary {
  color: #fff;
  background: linear-gradient(180deg, var(--cobalt-500), var(--cobalt-600));
  box-shadow: var(--shadow-cobalt);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(26,92,176,.38), 0 3px 8px rgba(15,62,122,.30); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  color: var(--ink-800); background: #fff; border-color: var(--silver);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--cobalt-300); color: var(--cobalt-600); box-shadow: var(--shadow-md); }
.btn-ghost:active { transform: translateY(0); }

/* On dark/navy sections */
.btn-light { color: var(--ink-900); background: #fff; }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(0,0,0,.28); }
.btn-light:active { transform: translateY(0); }
.btn-outline-light {
  color: #fff; background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.28);
}
.btn-outline-light:hover { transform: translateY(-2px); border-color: rgba(255,255,255,.6); background: rgba(255,255,255,.10); }
.btn-outline-light:active { transform: translateY(0); }

/* ---------- Cards / surfaces (base -> elevated -> floating) ---------- */
.card {
  position: relative; background: #fff; border: 1px solid var(--silver);
  border-radius: 1.25rem; box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease-spring), box-shadow .35s var(--ease-spring), border-color .35s var(--ease-spring);
}
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--cobalt-200); }

.card-dark {
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.10); border-radius: 1.25rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 20px 40px rgba(0,0,0,.30);
  transition: transform .35s var(--ease-spring), box-shadow .35s var(--ease-spring), border-color .35s var(--ease-spring);
}
.card-dark.card-hover:hover { transform: translateY(-4px); border-color: rgba(78,132,214,.5); }

/* ---------- Brand visual panels (placeholder-free imagery) ---------- */
.brand-panel {
  position: relative; isolation: isolate; overflow: hidden;
  display: grid; place-items: center; text-align: center;
  border-radius: 1rem; aspect-ratio: var(--panel-ar, 9 / 7);
  background:
    radial-gradient(38rem 26rem at 16% -18%, rgba(78,132,214,.42), transparent 60%),
    radial-gradient(30rem 24rem at 116% 14%, rgba(26,92,176,.30), transparent 55%),
    radial-gradient(26rem 26rem at 55% 132%, rgba(15,62,122,.55), transparent 60%),
    linear-gradient(160deg, var(--ink-700), var(--ink-900));
  border: 1px solid rgba(125,168,228,.18);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.07);
}
/* faint cobalt dot-grid, fading toward the edges */
.brand-panel::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  opacity: .7;
  -webkit-mask-image: radial-gradient(120% 120% at 50% 30%, #000 35%, transparent 78%);
          mask-image: radial-gradient(120% 120% at 50% 30%, #000 35%, transparent 78%);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='34' height='34'%3E%3Ccircle cx='2' cy='2' r='1' fill='%237DA8E4' fill-opacity='0.20'/%3E%3C/svg%3E");
}
/* grain overlay for depth */
.brand-panel::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  opacity: .45; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='np'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23np)'/%3E%3C/svg%3E");
}
.brand-panel__inner { position: relative; z-index: 1; display: grid; gap: 1.15rem; place-items: center; padding: 2rem; }
.brand-panel__chip {
  display: grid; place-items: center; width: 5.5rem; height: 5.5rem; border-radius: 1.25rem;
  background: linear-gradient(160deg, rgba(125,168,228,.22), rgba(125,168,228,.05));
  border: 1px solid rgba(125,168,228,.32);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.14), 0 16px 34px rgba(0,0,0,.34);
}
.brand-panel__chip img { width: 3rem; height: auto; }
.brand-panel__label {
  font-family: "Space Grotesk", sans-serif; font-weight: 600; letter-spacing: .01em;
  color: #dbe6fb; font-size: 1.05rem;
}

/* ---------- Full-bleed SVG "digital ocean" scenes ---------- */
.brand-panel--scene { padding: 0; }
.scene-svg { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; display: block; }
.scene-label {
  position: absolute; left: 1.15rem; bottom: 1.05rem; z-index: 2;
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: "Space Grotesk", sans-serif; font-weight: 600;
  font-size: .9rem; letter-spacing: .01em; color: #eaf1fb;
  padding: .5rem .85rem; border-radius: .7rem;
  background: rgba(7, 32, 62, .42);
  -webkit-backdrop-filter: blur(7px); backdrop-filter: blur(7px);
  border: 1px solid rgba(125, 168, 228, .28);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .28);
}
.scene-label::before {
  content: ""; width: .5rem; height: .5rem; border-radius: 50%;
  background: var(--cobalt-300); box-shadow: 0 0 10px 1px rgba(125, 168, 228, .85);
}

/* ---------- Scene ambient animation (transform + opacity only) ---------- */
.scene-svg .anim { transform-box: fill-box; transform-origin: center; will-change: transform, opacity; }
@keyframes s-pulse  { 0%, 100% { opacity: .6 }  50% { opacity: 1 } }
@keyframes s-pulseS { 0%, 100% { opacity: .35 } 50% { opacity: .8 } }
@keyframes s-floatA { 0%, 100% { transform: translateY(0) }   50% { transform: translateY(-7px) } }
@keyframes s-floatB { 0%, 100% { transform: translateY(0) }   50% { transform: translateY(6px) } }
@keyframes s-drift  { 0%, 100% { transform: translateX(0) }   50% { transform: translateX(-12px) } }
@keyframes s-drift2 { 0%, 100% { transform: translateX(0) }   50% { transform: translateX(10px) } }
@keyframes s-spin   { to { transform: rotate(360deg) } }
@keyframes s-spinR  { to { transform: rotate(-360deg) } }
@keyframes s-twinkle{ 0%, 100% { opacity: .3 }   50% { opacity: 1 } }
@keyframes s-ripple { 0% { transform: scale(.55); opacity: .6 } 80% { opacity: .06 } 100% { transform: scale(1.3); opacity: 0 } }
@keyframes s-travel { 0% { transform: translateX(0); opacity: 0 } 12% { opacity: 1 } 85% { opacity: 1 } 100% { transform: translateX(var(--tx, 110px)); opacity: 0 } }
@keyframes s-breathe{ 0%, 100% { transform: scale(1) }     50% { transform: scale(1.05) } }

.a-pulse  { animation: s-pulse  5s ease-in-out infinite; }
.a-pulseS { animation: s-pulseS 7s ease-in-out infinite; }
.a-floatA { animation: s-floatA 6s ease-in-out infinite; }
.a-floatB { animation: s-floatB 7.5s ease-in-out infinite; }
.a-drift  { animation: s-drift  9s ease-in-out infinite; }
.a-drift2 { animation: s-drift2 11s ease-in-out infinite; }
.a-spin   { animation: s-spin   70s linear infinite; }
.a-spinR  { animation: s-spinR  90s linear infinite; }
.a-twinkle{ animation: s-twinkle 4s ease-in-out infinite; }
.a-ripple { animation: s-ripple 6s ease-out infinite; }
.a-travel { animation: s-travel 5s ease-in-out infinite; }
.a-breathe{ animation: s-breathe 6s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
  .scene-svg * { animation: none !important; }
}

/* Icon chip */
.icon-chip {
  display: inline-grid; place-items: center; width: 3.25rem; height: 3.25rem;
  border-radius: .9rem; color: var(--cobalt-600);
  background: linear-gradient(160deg, var(--cobalt-50), #fff);
  border: 1px solid var(--cobalt-100);
  box-shadow: inset 0 1px 0 #fff, var(--shadow-sm);
}
.icon-chip--dark {
  color: #cfe0fa;
  background: linear-gradient(160deg, rgba(78,132,214,.22), rgba(78,132,214,.06));
  border: 1px solid rgba(125,168,228,.30);
  box-shadow: none;
}

/* ---------- Dark / navy sections ---------- */
.bg-ink { background: var(--ink-800); color: #e9ecf5; }
.surface-navy {
  position: relative; isolation: isolate; overflow: hidden;
  background:
    radial-gradient(60rem 40rem at 12% -10%, rgba(26,92,176,.45), transparent 60%),
    radial-gradient(50rem 36rem at 100% 10%, rgba(78,132,214,.30), transparent 55%),
    radial-gradient(40rem 40rem at 80% 120%, rgba(15,62,122,.55), transparent 60%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
  color: #e9ecf5;
}
.surface-navy h1, .surface-navy h2, .surface-navy h3 { color: #fff; }

/* Grain / noise overlay for depth on dark sections */
.noise::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  opacity: .5; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Soft drifting cobalt glow blob */
.glow-blob {
  position: absolute; border-radius: 50%; filter: blur(60px); pointer-events: none; z-index: -1;
  background: radial-gradient(circle, rgba(78,132,214,.55), transparent 70%);
  animation: drift 16s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translate3d(0,0,0) scale(1); }
  to   { transform: translate3d(3rem,-2rem,0) scale(1.12); }
}

/* Hairline dividers */
.divider-line { height: 1px; background: linear-gradient(90deg, transparent, var(--silver), transparent); }
.divider-line--light { background: linear-gradient(90deg, transparent, rgba(255,255,255,.18), transparent); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.78); backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--silver);
}
.nav-link {
  position: relative; font-weight: 500; color: var(--slate); padding: .35rem 0;
  transition: color .2s var(--ease-spring);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 100%;
  background: linear-gradient(90deg, var(--cobalt-500), var(--cobalt-300));
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease-spring);
  border-radius: 2px;
}
.nav-link:hover { color: var(--ink-800); }
.nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--cobalt-600); font-weight: 600; }

/* Mobile menu */
.mobile-menu { max-height: 0; overflow: hidden; transition: max-height .4s var(--ease-spring); }
.mobile-menu.open { max-height: 30rem; }

/* ---------- Lists ---------- */
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .65rem; }
.check-list li { position: relative; padding-left: 1.9rem; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .3rem; width: 1.2rem; height: 1.2rem;
  border-radius: 50%; background: var(--cobalt-50); border: 1px solid var(--cobalt-200);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231450A0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: .8rem; background-repeat: no-repeat; background-position: center;
}
.check-list--light li::before {
  background-color: rgba(125,168,228,.18); border-color: rgba(125,168,228,.4);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A9C5ED' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease-spring), transform .7s var(--ease-spring); }
.reveal.in { opacity: 1; transform: none; }
[data-delay="1"] { transition-delay: .08s; }
[data-delay="2"] { transition-delay: .16s; }
[data-delay="3"] { transition-delay: .24s; }
[data-delay="4"] { transition-delay: .32s; }

/* ---------- Forms ---------- */
.field {
  width: 100%; padding: .85rem 1rem; border-radius: .8rem;
  border: 1px solid var(--silver); background: #fff; color: var(--ink-800);
  font-family: "Inter", sans-serif; font-size: 1rem;
  transition: border-color .2s var(--ease-spring), box-shadow .2s var(--ease-spring), transform .2s var(--ease-spring);
}
.field::placeholder { color: #9aa0ac; }
.field:hover { border-color: var(--cobalt-300); }
.field:focus-visible, .field:focus { outline: none; border-color: var(--cobalt-500); box-shadow: 0 0 0 4px rgba(26,92,176,.14); }
.field-label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .45rem; color: var(--ink-800); }

/* Social icon buttons */
.social-btn {
  display: inline-grid; place-items: center; width: 2.6rem; height: 2.6rem; border-radius: .75rem;
  color: #cdd3e2; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12);
  transition: transform .25s var(--ease-spring), color .25s var(--ease-spring), background-color .25s var(--ease-spring), border-color .25s var(--ease-spring);
}
.social-btn:hover { transform: translateY(-3px); color: #fff; background: rgba(26,92,176,.45); border-color: rgba(125,168,228,.6); }
.social-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(125,168,228,.6); }

/* Marquee-ish tool strip */
.tool-pill {
  display: inline-flex; align-items: center; gap: .5rem; padding: .5rem 1rem; border-radius: 999px;
  background: #fff; border: 1px solid var(--silver); color: var(--slate); font-weight: 600; font-size: .9rem;
  box-shadow: var(--shadow-sm);
}

/* ---------- Flow Assistant chat widget ---------- */
.nf-chat { position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90; }

.nf-chat-launcher {
  position: relative; display: grid; place-items: center;
  width: 3.75rem; height: 3.75rem; border-radius: 50%; cursor: pointer;
  color: #fff; border: 1px solid rgba(255,255,255,.18);
  background: linear-gradient(180deg, var(--cobalt-500), var(--cobalt-700));
  box-shadow: var(--shadow-cobalt);
  transition: transform .25s var(--ease-spring), box-shadow .25s var(--ease-spring);
}
.nf-chat-launcher:hover { transform: translateY(-3px) scale(1.04); box-shadow: 0 14px 30px rgba(26,92,176,.42), 0 3px 8px rgba(15,62,122,.32); }
.nf-chat-launcher:active { transform: translateY(0) scale(.98); }
.nf-chat-launcher:focus-visible { outline: none; box-shadow: 0 0 0 3px #fff, 0 0 0 5px var(--cobalt-400); }
.nf-chat-launcher__dot {
  position: absolute; top: .55rem; right: .55rem; width: .65rem; height: .65rem; border-radius: 50%;
  background: #46d39a; border: 2px solid #fff; animation: nf-pulse 2.2s var(--ease-spring) infinite;
}
@keyframes nf-pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.25); opacity: .7; } }

.nf-chat-panel {
  position: absolute; right: 0; bottom: 4.75rem; width: min(23rem, calc(100vw - 2.5rem));
  height: min(34rem, calc(100vh - 8rem)); display: flex; flex-direction: column; overflow: hidden;
  background: #fff; border: 1px solid var(--silver); border-radius: 1.25rem;
  box-shadow: var(--shadow-lg);
  transform-origin: bottom right; opacity: 0; transform: translateY(12px) scale(.96); pointer-events: none;
  transition: opacity .28s var(--ease-spring), transform .28s var(--ease-spring);
}
.nf-chat.is-open .nf-chat-panel { opacity: 1; transform: none; pointer-events: auto; }

.nf-chat-header {
  position: relative; display: flex; align-items: center; gap: .75rem; padding: .9rem 1rem;
  color: #fff;
  background:
    radial-gradient(20rem 12rem at 0% -40%, rgba(78,132,214,.5), transparent 60%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nf-chat-avatar {
  display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: .7rem; flex: 0 0 auto;
  background: linear-gradient(160deg, rgba(125,168,228,.28), rgba(125,168,228,.08));
  border: 1px solid rgba(125,168,228,.34);
}
.nf-chat-avatar img { width: 1.35rem; height: auto; }
.nf-chat-title { display: flex; flex-direction: column; line-height: 1.25; }
.nf-chat-title strong { font-family: "Space Grotesk", sans-serif; font-size: .98rem; }
.nf-chat-title span { font-size: .72rem; color: #9fc0f0; }
.nf-chat-close {
  margin-left: auto; display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: .6rem;
  color: #cdd9ef; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); cursor: pointer;
  transition: transform .2s var(--ease-spring), background-color .2s var(--ease-spring), color .2s var(--ease-spring);
}
.nf-chat-close:hover { color: #fff; background: rgba(255,255,255,.14); transform: rotate(90deg); }
.nf-chat-close:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(125,168,228,.6); }

.nf-chat-body {
  flex: 1 1 auto; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: .7rem;
  background: linear-gradient(180deg, var(--silver-light), #fff 40%);
  scrollbar-width: thin; scrollbar-color: var(--silver) transparent;
}
.nf-chat-body::-webkit-scrollbar { width: 8px; }
.nf-chat-body::-webkit-scrollbar-thumb { background: var(--silver); border-radius: 8px; }

.nf-msg { display: flex; align-items: flex-end; gap: .5rem; max-width: 100%; }
.nf-msg--bot { justify-content: flex-start; }
.nf-msg--user { justify-content: flex-end; }
.nf-msg-ava {
  flex: 0 0 auto; display: grid; place-items: center; width: 1.65rem; height: 1.65rem; border-radius: .5rem;
  background: linear-gradient(160deg, var(--cobalt-50), #fff); border: 1px solid var(--cobalt-100); margin-bottom: .1rem;
}
.nf-msg-ava img { width: .9rem; height: auto; }
.nf-bubble {
  font-size: .9rem; line-height: 1.55; padding: .65rem .85rem; border-radius: 1rem; max-width: 16rem;
  animation: nf-rise .3s var(--ease-spring) both;
}
.nf-msg--bot .nf-bubble {
  background: #fff; color: var(--ink-800); border: 1px solid var(--silver); border-bottom-left-radius: .35rem;
  box-shadow: var(--shadow-sm);
}
.nf-msg--user .nf-bubble {
  color: #fff; border-bottom-right-radius: .35rem;
  background: linear-gradient(180deg, var(--cobalt-500), var(--cobalt-600));
  box-shadow: var(--shadow-cobalt);
}
.nf-bubble a { color: var(--cobalt-600); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
.nf-msg--user .nf-bubble a { color: #fff; }
@keyframes nf-rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.nf-chips { display: flex; flex-wrap: wrap; gap: .45rem; padding-left: 2.15rem; }
.nf-chip {
  font-family: "Space Grotesk", sans-serif; font-size: .8rem; font-weight: 600; cursor: pointer;
  padding: .4rem .8rem; border-radius: 999px; color: var(--cobalt-700);
  background: var(--cobalt-50); border: 1px solid var(--cobalt-200);
  transition: transform .2s var(--ease-spring), background-color .2s var(--ease-spring), color .2s var(--ease-spring), border-color .2s var(--ease-spring);
}
.nf-chip:hover { transform: translateY(-2px); background: var(--cobalt-500); color: #fff; border-color: var(--cobalt-500); }
.nf-chip:active { transform: translateY(0); }
.nf-chip:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(26,92,176,.25); }

.nf-typing { display: inline-flex; gap: .25rem; align-items: center; }
.nf-typing span { width: .4rem; height: .4rem; border-radius: 50%; background: var(--cobalt-300); animation: nf-blink 1.2s infinite both; }
.nf-typing span:nth-child(2) { animation-delay: .2s; }
.nf-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes nf-blink { 0%,80%,100% { opacity: .25; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-2px); } }

.nf-chat-input-row { display: flex; gap: .5rem; padding: .7rem; border-top: 1px solid var(--silver); background: #fff; }
.nf-chat-input {
  flex: 1 1 auto; padding: .65rem .85rem; border-radius: .8rem; border: 1px solid var(--silver);
  background: #fff; color: var(--ink-800); font-family: "Inter", sans-serif; font-size: .9rem;
  transition: border-color .2s var(--ease-spring), box-shadow .2s var(--ease-spring);
}
.nf-chat-input::placeholder { color: #9aa0ac; }
.nf-chat-input:focus-visible, .nf-chat-input:focus { outline: none; border-color: var(--cobalt-500); box-shadow: 0 0 0 3px rgba(26,92,176,.14); }
.nf-chat-send {
  flex: 0 0 auto; display: grid; place-items: center; width: 2.6rem; height: 2.6rem; border-radius: .8rem; cursor: pointer;
  color: #fff; border: 1px solid transparent; background: linear-gradient(180deg, var(--cobalt-500), var(--cobalt-600));
  box-shadow: var(--shadow-cobalt);
  transition: transform .2s var(--ease-spring), box-shadow .2s var(--ease-spring);
}
.nf-chat-send:hover { transform: translateY(-2px); }
.nf-chat-send:active { transform: translateY(0); }
.nf-chat-send:focus-visible { outline: none; box-shadow: 0 0 0 3px #fff, 0 0 0 5px var(--cobalt-400); }

@media (max-width: 480px) {
  .nf-chat { right: 1rem; bottom: 1rem; }
  .nf-chat-panel { bottom: 4.5rem; height: min(32rem, calc(100vh - 7rem)); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}