/* ===========================================================================
   Cadence — design system v2 (marketing + app shared tokens)
   "Quiet luxury, in motion." Deep canvas, aurora light, layered glass,
   big calm numerics, gradient accents, depth & micro-motion. Dark-first,
   real light mode. Every legacy class name is preserved for the SPA.
   =========================================================================== */
:root{
  /* light */
  --bg:#f4f5fb; --bg-2:#eceefb; --surface:#ffffff;
  --surface-2:#eef1f8; --surface-glass:rgba(255,255,255,.72); --surface-line:rgba(16,24,40,.07);
  --elev:0 1px 2px rgba(16,24,40,.05),0 8px 26px -12px rgba(16,24,40,.16);
  --border:#e4e7f0; --text:#0b1020; --text-2:#46506a; --text-3:#8b94ab;
  --brand:#5b4bff; --brand-2:#9333ea; --brand-3:#06b6d4; --brand-soft:#ecebff;
  --nicotine:#f59e0b; --caffeine:#a4663f; --protein:#16a34a; --calories:#f97316;
  --good:#16a34a; --warn:#d97706; --bad:#dc2626; --info:#2563eb;
  --radius:20px; --radius-sm:13px; --radius-lg:28px; --radius-xl:36px;
  --maxw:1160px;
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --shadow-pop:0 30px 80px -28px rgba(40,30,120,.45),0 12px 30px -18px rgba(16,24,40,.30);
  --ring:0 0 0 1px rgba(255,255,255,.6) inset;
  --grad:linear-gradient(120deg,var(--brand),var(--brand-2) 55%,var(--brand-3));
  --aurora-1:rgba(91,75,255,.30); --aurora-2:rgba(147,51,234,.26); --aurora-3:rgba(6,182,212,.22);
}
@media (prefers-color-scheme: dark){ :root{ color-scheme:dark; } }
[data-theme="dark"]{
  --bg:#070912; --bg-2:#0c1020; --surface:#11151f; --surface-2:#171c2a;
  --surface-glass:rgba(20,25,38,.66); --surface-line:rgba(255,255,255,.06);
  --border:#222a3b; --text:#eef1f7; --text-2:#aeb7cc; --text-3:#6f7990; --brand-soft:#1a1840;
  --elev:0 1px 2px rgba(0,0,0,.4),0 18px 40px -20px rgba(0,0,0,.7);
  --shadow-pop:0 40px 90px -30px rgba(0,0,0,.8),0 0 0 1px rgba(255,255,255,.04);
  --ring:0 0 0 1px rgba(255,255,255,.05) inset;
  --aurora-1:rgba(91,75,255,.42); --aurora-2:rgba(147,51,234,.34); --aurora-3:rgba(6,182,212,.26);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#070912; --bg-2:#0c1020; --surface:#11151f; --surface-2:#171c2a;
    --surface-glass:rgba(20,25,38,.66); --surface-line:rgba(255,255,255,.06);
    --border:#222a3b; --text:#eef1f7; --text-2:#aeb7cc; --text-3:#6f7990; --brand-soft:#1a1840;
    --elev:0 1px 2px rgba(0,0,0,.4),0 18px 40px -20px rgba(0,0,0,.7);
    --shadow-pop:0 40px 90px -30px rgba(0,0,0,.8),0 0 0 1px rgba(255,255,255,.04);
    --aurora-1:rgba(91,75,255,.42); --aurora-2:rgba(147,51,234,.34); --aurora-3:rgba(6,182,212,.26);
  }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text); font-family:var(--font); line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; overflow-x:hidden;
  background-image:
    radial-gradient(60% 50% at 12% -8%,var(--aurora-1),transparent 60%),
    radial-gradient(55% 45% at 100% 0%,var(--aurora-2),transparent 55%),
    radial-gradient(50% 50% at 88% 110%,var(--aurora-3),transparent 60%);
  background-attachment:fixed;
}
h1,h2,h3,h4{line-height:1.08;letter-spacing:-.025em;margin:0 0 .4em;color:var(--text)}
h1{font-size:clamp(2.3rem,5.4vw,4rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.4vw,2.5rem);font-weight:780}
h3{font-size:1.2rem;font-weight:720}
p{margin:0 0 1rem;color:var(--text-2)}
a{color:var(--brand);text-decoration:none;transition:color .15s}
a:hover{text-decoration:none;color:var(--brand-2)}
small{color:var(--text-3)}
code,pre,kbd{font-family:"SFMono-Regular",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.muted{color:var(--text-3)}
.center{text-align:center}
.hidden{display:none !important}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---- buttons ---- */
.btn{position:relative;display:inline-flex;align-items:center;gap:.5em;justify-content:center;border:1px solid transparent;
  border-radius:999px;padding:.74em 1.4em;font-weight:650;font-size:.96rem;cursor:pointer;font-family:inherit;white-space:nowrap;
  transition:transform .18s cubic-bezier(.2,.7,.2,1),box-shadow .2s,background .2s,border-color .2s;isolation:isolate}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--grad);background-size:160% 160%;color:#fff;box-shadow:0 10px 24px -10px rgba(91,75,255,.7),var(--ring)}
.btn-primary:hover{color:#fff;background-position:100% 0;box-shadow:0 16px 34px -10px rgba(91,75,255,.85)}
.btn-ghost{background:var(--surface-glass);color:var(--text);border-color:var(--border);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:var(--surface-2);border-color:color-mix(in srgb,var(--brand) 40%,var(--border))}
.btn-soft{background:var(--brand-soft);color:var(--brand)}
.btn-soft:hover{color:var(--brand-2)}
.btn-block{width:100%}
.btn-lg{padding:.95em 1.8em;font-size:1.06rem}
.btn-danger{background:var(--bad);color:#fff}
.btn-sm{padding:.46em .85em;font-size:.85rem}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* ---- cards ---- */
.card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--elev)}
.card-pad{padding:24px}
.grid{display:grid;gap:18px}
/* glass treatment for marketing cards */
.feature,.price,.doc-side,.mock{background:var(--surface-glass);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--surface-line);box-shadow:var(--elev)}
.feature,.price{transition:transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s,border-color .25s}
.feature:hover,.price:hover{transform:translateY(-6px);box-shadow:var(--shadow-pop);border-color:color-mix(in srgb,var(--brand) 28%,transparent)}

/* ---- badges ---- */
.badge{display:inline-flex;align-items:center;gap:.4em;font-size:.78rem;font-weight:650;padding:.3em .72em;border-radius:999px;background:var(--surface-2);color:var(--text-2)}
.badge-good{background:rgba(22,163,74,.14);color:var(--good)}
.badge-warn{background:rgba(217,119,6,.16);color:var(--warn)}
.badge-bad{background:rgba(220,38,38,.14);color:var(--bad)}
.badge-brand{background:var(--brand-soft);color:var(--brand)}

/* ---- forms ---- */
label{display:block;font-weight:600;font-size:.9rem;margin:0 0 .35em;color:var(--text-2)}
input,select,textarea{width:100%;padding:.78em .95em;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--surface);color:var(--text);font-family:inherit;font-size:1rem;transition:.18s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 22%,transparent)}
.field{margin-bottom:14px}
.form-error{color:var(--bad);font-size:.88rem;margin-top:.4em}
.hint{font-size:.82rem;color:var(--text-3);margin-top:.35em}

/* ---- marketing nav ---- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(16px);
  background:color-mix(in srgb,var(--bg) 72%,transparent);border-bottom:1px solid var(--surface-line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:.6em;font-weight:800;letter-spacing:-.02em;color:var(--text);font-size:1.2rem}
.brand:hover{color:var(--text)}
.brand .logo{width:32px;height:32px;border-radius:10px;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:800;
  box-shadow:0 6px 16px -6px rgba(91,75,255,.8),var(--ring)}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--text-2);font-weight:600;font-size:.95rem;position:relative}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;background:var(--grad);border-radius:2px;transition:right .25s}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{right:0}
.nav-cta{display:flex;gap:10px;align-items:center}
.nav-burger{display:none;background:none;border:0;cursor:pointer;color:var(--text);font-size:1.5rem}
@media(max-width:820px){
  .nav-links{display:none}
  .nav-burger{display:block}
  .nav-links.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;background:var(--surface);
    border-bottom:1px solid var(--border);padding:16px 22px;gap:16px}
}

/* ---- hero ---- */
.hero{padding:84px 0 56px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:.5em;font-weight:700;font-size:.8rem;color:var(--brand);
  background:var(--brand-soft);padding:.45em 1em;border-radius:999px;margin-bottom:20px;border:1px solid color-mix(in srgb,var(--brand) 20%,transparent)}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--good);box-shadow:0 0 0 0 rgba(22,163,74,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(22,163,74,.5)}70%{box-shadow:0 0 0 8px rgba(22,163,74,0)}100%{box-shadow:0 0 0 0 rgba(22,163,74,0)}}
.hero h1{margin-bottom:.32em}
.hero p.lead{font-size:1.2rem;max-width:42ch;color:var(--text-2)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-trust{margin-top:24px;display:flex;gap:20px;flex-wrap:wrap;color:var(--text-3);font-size:.86rem}
.hero-trust span{display:flex;align-items:center;gap:.4em}
.hero-aura{position:absolute;inset:-20% -10% auto -10%;height:120%;z-index:0;pointer-events:none;filter:blur(8px);opacity:.9}
.hero-aura i{position:absolute;border-radius:50%;filter:blur(60px);opacity:.7;animation:float 14s ease-in-out infinite}
.hero-aura i:nth-child(1){width:380px;height:380px;background:var(--aurora-1);top:-60px;left:-40px}
.hero-aura i:nth-child(2){width:320px;height:320px;background:var(--aurora-2);top:40px;right:6%;animation-delay:-4s}
.hero-aura i:nth-child(3){width:300px;height:300px;background:var(--aurora-3);bottom:-80px;left:38%;animation-delay:-8s}
@keyframes float{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-26px) translateX(14px)}}
@media(max-width:880px){.hero-grid{grid-template-columns:1fr;gap:34px}.hero{padding:52px 0 26px}}

/* phone mockup — floating 3D-ish glass */
.mock-stage{perspective:1400px}
.mock{position:relative;border-radius:36px;padding:20px;max-width:360px;margin:0 auto;
  box-shadow:var(--shadow-pop);transform:rotateY(-13deg) rotateX(6deg);transform-style:preserve-3d;
  animation:hover3d 7s ease-in-out infinite;border:1px solid var(--surface-line)}
.mock::before{content:"";position:absolute;inset:0;border-radius:36px;background:linear-gradient(150deg,rgba(255,255,255,.18),transparent 40%);pointer-events:none}
@keyframes hover3d{0%,100%{transform:rotateY(-13deg) rotateX(6deg) translateY(0)}50%{transform:rotateY(-9deg) rotateX(4deg) translateY(-14px)}}
@media(max-width:880px){.mock{transform:none;animation:none}}
.mock .ring-row{display:flex;gap:14px;justify-content:space-between}
.stat{background:var(--surface-2);border-radius:16px;padding:14px;flex:1;border:1px solid var(--surface-line)}
.stat .n{font-size:1.8rem;font-weight:800;letter-spacing:-.04em}
.stat .l{font-size:.7rem;color:var(--text-3);text-transform:uppercase;letter-spacing:.07em}
.bar{height:8px;border-radius:6px;background:var(--surface-2);overflow:hidden;margin-top:9px;box-shadow:inset 0 0 0 1px var(--surface-line)}
.bar > i{display:block;height:100%;border-radius:6px;background:var(--grad)}
.mock-float{position:absolute;z-index:2;background:var(--surface-glass);backdrop-filter:blur(14px);border:1px solid var(--surface-line);
  border-radius:16px;padding:10px 14px;box-shadow:var(--elev);font-weight:700;font-size:.84rem;display:flex;align-items:center;gap:.5em}
.mock-float.one{top:6%;left:-6%;animation:float 9s ease-in-out infinite}
.mock-float.two{bottom:12%;right:-7%;animation:float 11s ease-in-out infinite;animation-delay:-3s}
@media(max-width:880px){.mock-float{display:none}}

/* sections */
.section{padding:64px 0;position:relative}
.section h2{max-width:24ch}
.section-sub{color:var(--text-3);max-width:56ch;margin-bottom:34px;font-size:1.05rem}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:880px){.features{grid-template-columns:1fr}}
.feature{border-radius:var(--radius)}
.feature .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:1.4rem;margin-bottom:14px;
  background:var(--brand-soft);box-shadow:var(--ring)}
.feature h3{margin-bottom:.3em}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
@media(max-width:880px){.steps{grid-template-columns:1fr 1fr}}
.step{position:relative;padding:4px}
.step .num{width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;font-weight:800;display:grid;place-items:center;margin-bottom:12px;
  box-shadow:0 8px 18px -8px rgba(91,75,255,.8),var(--ring)}

/* pricing */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
@media(max-width:880px){.pricing{grid-template-columns:1fr}}
.price{border-radius:var(--radius);padding:24px;position:relative}
.price .amt{font-size:2.8rem;font-weight:800;letter-spacing:-.04em}
.price ul{list-style:none;padding:0;margin:16px 0 0}
.price li{padding:.42em 0;color:var(--text-2);display:flex;gap:.6em;align-items:flex-start}
.price li::before{content:"✓";color:var(--good);font-weight:800}
.price.featured{border-color:color-mix(in srgb,var(--brand) 50%,transparent);box-shadow:0 0 0 1px color-mix(in srgb,var(--brand) 40%,transparent),var(--shadow-pop)}
.ribbon{position:absolute;top:-12px;right:16px;background:var(--grad);color:#fff;font-size:.72rem;font-weight:700;padding:.34em .85em;border-radius:999px;box-shadow:var(--ring)}

/* docs */
.doc-layout{display:grid;grid-template-columns:236px 1fr;gap:36px;align-items:start}
@media(max-width:880px){.doc-layout{grid-template-columns:1fr}.doc-side{position:static !important}}
.doc-side{position:sticky;top:88px;border-radius:var(--radius);padding:22px}
.doc-side a{display:block;padding:.42em 0;color:var(--text-2);font-size:.92rem}
.doc-side a:hover{color:var(--brand)}
.doc-side .grp{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3);margin:16px 0 6px}
.lead{font-size:1.12rem;color:var(--text-2)}
pre{background:#0a0d17;color:#e6e8f0;border-radius:14px;padding:16px 18px;overflow:auto;font-size:.86rem;line-height:1.55;border:1px solid #1d2436}
code{font-size:.92em}
:not(pre) > code{background:var(--surface-2);padding:.12em .42em;border-radius:6px;border:1px solid var(--surface-line);color:var(--text)}
.endpoint{display:flex;gap:.6em;align-items:center;margin:.3em 0;background:var(--surface-2);border:1px solid var(--surface-line);border-radius:10px;padding:.5em .7em}
.method{font-weight:800;font-size:.72rem;padding:.22em .6em;border-radius:6px;font-family:var(--font);letter-spacing:.03em}
.method.get{background:rgba(37,99,235,.16);color:var(--info)}
.method.post{background:rgba(22,163,74,.16);color:var(--good)}
.method.patch{background:rgba(217,119,6,.18);color:var(--warn)}
.method.delete{background:rgba(220,38,38,.16);color:var(--bad)}
.tablewrap{overflow:auto;border:1px solid var(--border);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{text-align:left;padding:.62em .85em;border-bottom:1px solid var(--border)}
th{color:var(--text-3);font-weight:650;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em}
.kicker{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--brand);font-weight:700}

/* footer */
.footer{border-top:1px solid var(--surface-line);padding:48px 0;margin-top:48px;color:var(--text-3);
  background:color-mix(in srgb,var(--bg-2) 60%,transparent)}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:28px}
.footer a{color:var(--text-2);display:block;padding:.26em 0;font-size:.92rem}
.footer a:hover{color:var(--brand)}
.footer h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);margin-bottom:.5em}

/* misc */
.cta-band{position:relative;overflow:hidden;background:var(--grad);background-size:180% 180%;color:#fff;border-radius:var(--radius-xl);padding:56px;text-align:center;
  box-shadow:var(--shadow-pop);animation:shift 12s ease infinite}
@keyframes shift{0%,100%{background-position:0 50%}50%{background-position:100% 50%}}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(40% 80% at 80% 0%,rgba(255,255,255,.25),transparent 60%);pointer-events:none}
.cta-band h2{color:#fff;position:relative}.cta-band p{color:rgba(255,255,255,.9);position:relative}
.cta-band .btn{position:relative}
.theme-toggle{background:var(--surface-glass);border:1px solid var(--border);border-radius:999px;width:40px;height:40px;cursor:pointer;color:var(--text);font-size:1rem;backdrop-filter:blur(8px);transition:.18s}
.theme-toggle:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--brand) 40%,var(--border))}
.disclaimer{font-size:.82rem;color:var(--text-3);border-top:1px solid var(--border);padding-top:16px;margin-top:26px}

/* scroll reveal (progressive enhancement; visible by default) */
.reveal{opacity:0;transform:translateY(18px);animation:reveal .7s cubic-bezier(.2,.7,.2,1) forwards}
.reveal.d1{animation-delay:.08s}.reveal.d2{animation-delay:.16s}.reveal.d3{animation-delay:.24s}
.reveal.d4{animation-delay:.32s}.reveal.d5{animation-delay:.4s}.reveal.d6{animation-delay:.48s}
@keyframes reveal{to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  .mock{transform:none}
}