/* ============================================================
   Jake — landing page
   Mobile-first. Bright, airy, cloud-like. No dark surfaces.
   ============================================================ */

:root{
  /* sky */
  --white:#ffffff;
  --sky-1:#fbfdff;
  --sky-2:#eef6ff;
  --sky-3:#dfeeff;
  --peri:#c2d8f7;
  --blush:#ffe6da;

  /* ink (soft navy, never black) */
  --ink:#22304a;
  --ink-2:#54658a;
  --ink-3:#8a99b6;

  /* accent */
  --accent:#3f6fd6;
  --accent-2:#5a8bee;
  --accent-soft:#e8f0ff;
  --accent-line:#a9c5f5;

  --radius:20px;
  --radius-lg:28px;
  --shadow-sm:0 2px 10px rgba(63,111,214,.06);
  --shadow:0 10px 34px -12px rgba(52,86,158,.24), 0 2px 8px rgba(52,86,158,.05);
  --shadow-lg:0 34px 70px -28px rgba(52,86,158,.34), 0 6px 18px rgba(52,86,158,.06);

  --wrap:min(100% - 2.5rem, 1080px);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#dcecff 0%,#eef6ff 22%,#fdfbfa 58%,#fff6f1 100%);
  background-attachment:fixed;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img,svg{max-width:100%;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- atmosphere ---------- */
.sky{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;}
.sky .bloom,.sky .clouds{position:absolute;inset:0;width:100%;height:100%;}
.sun{
  position:absolute;top:-20vh;left:50%;transform:translateX(-50%);
  width:130vw;height:75vh;
  background:radial-gradient(50% 50% at 50% 50%,rgba(255,236,216,.9),rgba(255,243,231,.4) 44%,transparent 72%);
}
.clouds{filter:drop-shadow(0 16px 28px rgba(120,155,215,.11));}

/* clouds sail slowly sideways; each band at its own pace = depth */
.sail{transform-box:view-box;animation:sail 90s linear infinite;}
.sail-1{animation-duration:150s;animation-delay:-20s;}
.sail-2{animation-duration:170s;animation-delay:-90s;}
.sail-3{animation-duration:140s;animation-delay:-55s;}
.sail-4{animation-duration:110s;animation-delay:-10s;}
.sail-5{animation-duration:125s;animation-delay:-70s;}
.sail-6{animation-duration:100s;animation-delay:-40s;}
.sail-7{animation-duration:80s;animation-delay:-15s;}
.sail-8{animation-duration:88s;animation-delay:-60s;}
.sail-9{animation-duration:72s;animation-delay:-35s;}
@keyframes sail{from{transform:translateX(-14%);}to{transform:translateX(114%);}}

/* ---------- nav ---------- */
.nav{
  width:var(--wrap);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:1.15rem 0 .25rem;
}
.brand{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:"Fraunces",Georgia,serif;font-weight:500;font-size:1.12rem;
  color:var(--ink);text-decoration:none;letter-spacing:-.01em;
}
.brand-mark{flex:none;filter:drop-shadow(0 3px 6px rgba(80,120,200,.22));}
.nav-cta{
  font-size:.86rem;font-weight:500;color:var(--accent);text-decoration:none;
  padding:.5rem .9rem;border-radius:999px;
  background:rgba(255,255,255,.7);border:1px solid rgba(169,197,245,.5);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  box-shadow:var(--shadow-sm);white-space:nowrap;
}
.nav-cta:hover{background:#fff;}

/* ---------- shared type ---------- */
h1,h2,h3{font-family:"Fraunces",Georgia,serif;font-weight:400;letter-spacing:-.02em;line-height:1.12;margin:0;}
h1{font-size:clamp(2.5rem,10.5vw,4.4rem);}
h1 em{font-style:italic;color:var(--accent);}
h2{font-size:clamp(1.85rem,6.6vw,2.7rem);}
h3{font-size:1.28rem;font-weight:500;letter-spacing:-.015em;}
p{margin:0;}

.section-sub{color:var(--ink-2);font-size:1rem;max-width:46ch;margin:.85rem auto 0;}
.fineprint{color:var(--ink-3);font-size:.8rem;line-height:1.5;}
.fineprint.center{text-align:center;display:block;margin-top:1rem;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:inherit;font-size:1rem;font-weight:500;
  padding:1.05rem 1.6rem;border-radius:999px;border:0;
  cursor:pointer;text-decoration:none;position:relative;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  -webkit-tap-highlight-color:transparent;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(160deg,var(--accent-2),var(--accent));
  box-shadow:0 12px 26px -10px rgba(63,111,214,.62),inset 0 1px 0 rgba(255,255,255,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -12px rgba(63,111,214,.68),inset 0 1px 0 rgba(255,255,255,.32);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  color:var(--ink-2);background:transparent;border:1px solid rgba(169,197,245,.55);
  padding:.85rem 1.6rem;
}
.btn-ghost:hover{background:rgba(255,255,255,.75);color:var(--ink);}
.btn-block{width:100%;margin-top:1rem;}
.btn .arrow{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.btn:focus-visible,a:focus-visible,input:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;}

/* busy state */
.spinner{display:none;width:17px;height:17px;border-radius:50%;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:spin .7s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.is-busy{pointer-events:none;opacity:.85;}
.is-busy .spinner{display:block;}

/* ============================================================
   1. HERO
   ============================================================ */
.hero{width:var(--wrap);margin:0 auto;padding:2.75rem 0 1rem;text-align:center;}

.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.76rem;font-weight:500;letter-spacing:.07em;text-transform:uppercase;
  color:var(--accent);
  background:rgba(255,255,255,.72);border:1px solid rgba(169,197,245,.5);
  padding:.45rem .85rem;border-radius:999px;margin-bottom:1.5rem;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  box-shadow:var(--shadow-sm);
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 3px rgba(90,139,238,.2);animation:pulse 2.4s ease-in-out infinite;}
@keyframes pulse{50%{opacity:.45;}}

.hero .lede{
  color:var(--ink-2);font-size:1.06rem;line-height:1.62;
  max-width:34ch;margin:1.35rem auto 0;
}
.hero-cta{margin-top:2rem;display:flex;flex-direction:column;align-items:center;gap:.9rem;}
.hero-cta .btn{width:100%;max-width:22rem;}

/* floating demo card */
.demo{position:relative;margin:3.25rem auto 0;max-width:30rem;}
.demo-glow{
  position:absolute;inset:-14% -2% -18%;border-radius:50%;
  background:radial-gradient(50% 50% at 50% 50%,rgba(255,255,255,.95),rgba(226,239,255,.55) 55%,transparent 76%);
  filter:blur(14px);
}
.demo-card{
  position:relative;text-align:left;
  background:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.9);
  border-radius:var(--radius-lg);
  padding:1.15rem;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(20px) saturate(1.25);-webkit-backdrop-filter:blur(20px) saturate(1.25);
  animation:float 7s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-9px);}}

.demo-head{display:flex;align-items:center;gap:.6rem;padding:0 .25rem .9rem;}
.demo-avatars{display:inline-flex;}
.av{
  width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;
  font-size:.66rem;font-weight:600;font-style:normal;color:#fff;
  border:2px solid #fff;
}
.av-1{background:linear-gradient(140deg,#8fb6f2,#5a8bee);}
.av-2{background:linear-gradient(140deg,#ffc2a6,#f9a08c);margin-left:-6px;}
.demo-label{font-size:.78rem;font-weight:500;color:var(--ink-3);letter-spacing:.01em;}

.bubble{border-radius:16px;padding:.8rem .95rem;font-size:.88rem;line-height:1.55;}
.bubble-you{
  background:linear-gradient(150deg,#eef4ff,#e3edff);
  color:var(--ink);margin-left:auto;max-width:88%;
  border-bottom-right-radius:5px;
}
.bubble-agent{
  margin-top:.6rem;max-width:96%;
  background:#fff;border:1px solid rgba(214,230,252,.9);
  color:var(--ink-2);border-bottom-left-radius:5px;
  box-shadow:var(--shadow-sm);
}
.bubble-agent strong{display:block;color:var(--ink);font-weight:600;margin-bottom:.5rem;}
.bubble-agent ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem;}
.bubble-agent li{display:flex;gap:.55rem;font-size:.83rem;align-items:baseline;}
.bubble-agent .when{
  flex:none;min-width:3.9rem;font-size:.7rem;font-weight:600;color:var(--accent);
  background:var(--accent-soft);border-radius:6px;padding:.12rem .35rem;text-align:center;
}
.bubble-agent .what{flex:1 1 auto;min-width:0;}
.bubble-agent li b{font-weight:600;color:#2f7a55;}
.bubble-foot{margin-top:.7rem;padding-top:.6rem;border-top:1px solid rgba(219,233,252,.85);font-size:.82rem;color:var(--ink-3);}

/* ============================================================
   2. VALUE
   ============================================================ */
.value{width:var(--wrap);margin:0 auto;padding:5rem 0 1rem;text-align:center;}
.cards{display:grid;gap:1rem;margin-top:2.5rem;text-align:left;}
.card{
  background:rgba(255,255,255,.72);
  border:1px solid rgba(255,255,255,.85);
  border-radius:var(--radius-lg);
  padding:1.6rem 1.5rem;
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.card-icon{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;margin-bottom:1rem;
  background:linear-gradient(150deg,#eff5ff,#e0ebff);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 5px 12px -6px rgba(63,111,214,.35);
  color:var(--accent);
}
.card-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.55;stroke-linecap:round;stroke-linejoin:round;}
.card p{margin-top:.55rem;color:var(--ink-2);font-size:.93rem;line-height:1.6;}

.chips{
  list-style:none;margin:2.5rem 0 0;padding:0;
  display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;
}
.chips li{
  font-size:.82rem;color:var(--ink-2);
  background:rgba(255,255,255,.72);
  border:1px solid rgba(255,255,255,.9);
  border-radius:999px;padding:.5rem .95rem;
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}

/* ============================================================
   3. INVITE FORM
   ============================================================ */
.invite{width:var(--wrap);margin:0 auto;padding:4.5rem 0 4rem;scroll-margin-top:1.5rem;}
.invite-panel{
  background:rgba(255,255,255,.8);
  border:1px solid rgba(255,255,255,.9);
  border-radius:var(--radius-lg);
  padding:1.75rem 1.35rem 2rem;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(22px) saturate(1.2);-webkit-backdrop-filter:blur(22px) saturate(1.2);
  max-width:37rem;margin:0 auto;
  text-align:center;
}
.step-count{
  font-size:.72rem;font-weight:600;letter-spacing:.11em;text-transform:uppercase;
  color:var(--accent);margin-bottom:.7rem;
}
.step{animation:rise .38s cubic-bezier(.22,.9,.3,1) both;}
@keyframes rise{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}

/* option list */
.options{border:0;margin:1.9rem 0 0;padding:0;display:grid;gap:.6rem;text-align:left;}
.option{display:block;cursor:pointer;-webkit-tap-highlight-color:transparent;}
.option input{position:absolute;opacity:0;width:0;height:0;}
.option-box{
  display:flex;align-items:center;gap:.85rem;
  background:#fff;
  border:1.5px solid #e4ecf9;
  border-radius:var(--radius);
  padding:.85rem .9rem;
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease,transform .12s ease;
}
.option:hover .option-box{border-color:var(--accent-line);}
.option:active .option-box{transform:scale(.99);}
.option input:focus-visible + .option-box{outline:2.5px solid var(--accent);outline-offset:2px;}
.option input:checked + .option-box{
  border-color:var(--accent-2);
  background:linear-gradient(150deg,#f4f8ff,#eaf2ff);
  box-shadow:0 6px 16px -8px rgba(63,111,214,.45);
}
.option-icon{
  flex:none;width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#f1f6ff,#e4edfd);
  color:var(--accent);
  transition:background .18s ease;
}
.option input:checked + .option-box .option-icon{background:linear-gradient(150deg,var(--accent-2),var(--accent));color:#fff;}
.option-icon svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.55;stroke-linecap:round;stroke-linejoin:round;}
.option-text{flex:1 1 auto;min-width:0;}
.option-text b{display:block;font-size:.93rem;font-weight:600;color:var(--ink);line-height:1.35;}
.option-text small{display:block;font-size:.78rem;color:var(--ink-3);line-height:1.45;margin-top:.15rem;}
.option-check{
  flex:none;width:22px;height:22px;border-radius:50%;
  border:1.5px solid #dbe5f5;background:#fff;
  display:grid;place-items:center;
  transition:all .18s ease;
}
.option-check svg{width:13px;height:13px;fill:none;stroke:#fff;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;opacity:0;transition:opacity .15s ease;}
.option input:checked + .option-box .option-check{background:var(--accent);border-color:var(--accent);}
.option input:checked + .option-box .option-check svg{opacity:1;}

/* text fields */
.field{text-align:left;margin-top:1.15rem;}
.field label{display:block;font-size:.84rem;font-weight:500;color:var(--ink-2);margin-bottom:.4rem;}
.field input{
  width:100%;font-family:inherit;font-size:1rem;color:var(--ink);
  padding:.95rem 1rem;
  background:#fff;border:1.5px solid #e4ecf9;border-radius:14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:#b7c3d8;}
.field input:focus{outline:none;border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(90,139,238,.14);}
.field input.invalid{border-color:#e8927f;box-shadow:0 0 0 4px rgba(232,146,127,.13);}

.err{color:#cd6a54;font-size:.8rem;margin-top:.45rem;text-align:left;}
#err-interests,#err-submit{margin-top:.9rem;}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}

/* success */
.step-done{padding:1.25rem 0 .5rem;}
.done-mark{
  width:64px;height:64px;border-radius:50%;margin:0 auto 1.4rem;
  display:grid;place-items:center;
  background:linear-gradient(150deg,var(--accent-2),var(--accent));
  box-shadow:0 14px 30px -12px rgba(63,111,214,.7);
  animation:pop .5s cubic-bezier(.2,1.3,.4,1) both;
}
.done-mark svg{width:30px;height:30px;fill:none;stroke:#fff;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
@keyframes pop{from{transform:scale(.4);opacity:0;}to{transform:scale(1);opacity:1;}}

.done-chips{margin-top:1.25rem;}
.done-chips li{background:var(--accent-soft);border-color:rgba(169,197,245,.55);color:var(--accent);font-weight:500;}
.done-chips:empty{display:none;}

/* ---------- footer ---------- */
.foot{width:var(--wrap);margin:0 auto;padding:1rem 0 2.5rem;text-align:center;}
.foot p{font-size:.78rem;color:var(--ink-3);}

/* ============================================================
   LARGER SCREENS
   ============================================================ */
@media (min-width:700px){
  .nav{padding:1.6rem 0 .5rem;}
  .hero{padding:4.5rem 0 1rem;}
  .hero .lede{font-size:1.18rem;max-width:44ch;}
  .hero-cta{flex-direction:row;justify-content:center;gap:1.35rem;}
  .hero-cta .btn{width:auto;}
  .hero-cta .fineprint{text-align:left;white-space:nowrap;}
  .demo{max-width:34rem;margin-top:4rem;}
  .demo-card{padding:1.5rem;}
  .value{padding:7rem 0 1rem;}
  .cards{grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:3.25rem;}
  .invite{padding:6rem 0 4rem;}
  .invite-panel{padding:2.75rem 2.5rem 3rem;}
  .options{gap:.7rem;}
  .option-box{padding:1rem 1.1rem;}
  .step-two-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
  .step-two-row .field{margin-top:1.15rem;}
}
@media (min-width:1000px){
  .hero{padding-top:5.5rem;}
}

/* ---------- motion / contrast prefs ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
}
@media (prefers-contrast:more){
  :root{--ink-2:#3c4c6d;--ink-3:#5b6b8a;}
  .option-box,.field input{border-color:#b9c8e2;}
}