/* Lettfolio marketing site — shared styles. Loaded before each page's own <style>, which holds only page-specific rules/overrides. */

/* ---- Design tokens. Canonical set = the product/guide pages. index.html overrides --paper/--text/--line/--shadow* in its own <style>. ---- */
:root{--ink:#0f2e2a;--ink-2:#13413a;--paper:#f6faf8;--paper-2:#eef4f1;--accent:#10b981;--accent-d:#047857;--accent-soft:#ecfdf5;--text:#22302d;--muted:#5b6b67;--line:#e4ece8;--radius:16px;--shadow:0 8px 24px rgba(15,46,42,.08);--shadow-lg:0 24px 60px rgba(15,46,42,.16);--font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;--white:#fff}

/* ---- Reset + base. Body type size / line-height is set per page (17px/1.72 product & guides, 16px/1.6 home, 16px/1.7 legal). ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased}
a{color:var(--accent-d);text-decoration:none}
img{max-width:100%}
.wrap{width:min(1140px,92%);margin:0 auto}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:600;font-size:.98rem;padding:.8rem 1.45rem;border-radius:999px;border:1.5px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s,color .2s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#04231b;box-shadow:0 6px 18px rgba(16,185,129,.32)}
.btn-primary:hover{background:#34d399;color:#04231b;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#eaf5f0}
.btn-ghost:hover{border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.06)}
.btn-primary{position:relative;overflow:hidden;isolation:isolate}
.btn-primary::after{content:"";position:absolute;top:0;left:-130%;width:55%;height:100%;background:linear-gradient(105deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-18deg);transition:left .65s ease;z-index:-1}
.btn-primary:hover::after{left:150%}

/* ---- Header / nav (markup: partials/header.html). Mobile menu toggled by site.js ---- */
.nav{background:var(--ink);color:#eaf5f0;position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.06)}
.nav{transition:box-shadow .3s ease,background .3s ease,backdrop-filter .3s ease}
.nav.scrolled{background:rgba(15,46,42,.82);-webkit-backdrop-filter:saturate(160%) blur(10px);backdrop-filter:saturate(160%) blur(10px);box-shadow:0 6px 26px rgba(0,0,0,.30)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:.9rem 0}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.25rem;color:#fff;letter-spacing:-.01em}
.logo .mark{width:32px;height:32px;border-radius:9px;background:var(--accent);display:grid;place-items:center;color:#04231b;font-weight:900}
.nav-links{display:flex;align-items:center;gap:1.8rem}
.nav-links a.link{color:#cfe3dc;font-weight:500;font-size:.95rem}
.nav-links a.link:hover{color:#fff}
.nav-cta{display:flex;align-items:center;gap:.8rem}
.menu-btn{display:none;background:none;border:0;color:#fff;font-size:1.6rem;line-height:1;padding:.4rem .55rem;border-radius:8px;cursor:pointer}
@media (max-width:880px){
  .nav-links .link{display:none}
  .menu-btn{display:block}
  .nav-links.open{position:absolute;top:62px;left:0;right:0;background:var(--ink-2);flex-direction:column;gap:1rem;padding:1.2rem 6%}
  .nav-links.open .link{display:block}
}

/* ---- The canonical nav has 7 links + CTAs, which overflows between the 880px breakpoint and ~1010px: collapse to the menu button there too ---- */
@media (min-width:881px) and (max-width:1100px){
  .nav-links .link{display:none}
  .menu-btn{display:block}
  .nav-links.open{position:absolute;top:100%;left:0;right:0;background:var(--ink-2);flex-direction:column;gap:1rem;padding:1.2rem 6%}
  .nav-links.open .link{display:block}
}

/* ---- Skip link ---- */
.lf-skip{position:absolute;left:-9999px;top:0;z-index:200;background:#04231b;color:#fff;padding:.7rem 1rem;border-radius:0 0 10px 0;font-weight:600}
.lf-skip:focus{left:0}

/* ---- Hero strip (product, guide, legal pages) + aurora ---- */
.hero-strip{background:radial-gradient(900px 420px at 78% -40%,rgba(16,185,129,.22),transparent 60%),linear-gradient(180deg,var(--ink),var(--ink-2));color:#eaf5f0;padding:3rem 0 3.2rem}
.crumbs{font-size:.82rem;color:#9fc3b8;margin-bottom:1.1rem;letter-spacing:.01em}
.crumbs a{color:#cfe3dc}
.crumbs a:hover{color:#fff}
.hero-strip h1{color:#fff;font-size:2.6rem;font-weight:800;line-height:1.12;letter-spacing:-.025em;max-width:22ch}
.hero-strip .sub{margin-top:1.1rem;font-size:1.18rem;color:#cfe3dc;max-width:60ch}
.hero-strip .meta{margin-top:1.1rem;font-size:.82rem;color:#9fc3b8;text-transform:uppercase;letter-spacing:.09em;font-weight:600}
.hero-cta{margin-top:1.6rem;display:flex;gap:.8rem;flex-wrap:wrap}
@media (max-width:880px){
  .hero-strip{padding:2.2rem 0 2.4rem}
  .hero-strip h1{font-size:2rem}
  .hero-strip .sub{font-size:1.05rem}
}
.lf-hero{position:relative;overflow:hidden;isolation:isolate}
.lf-hero>*:not(.lf-aurora){position:relative;z-index:2}
.lf-hero h1{background:linear-gradient(100deg,#fff 0%,#a7f3d0 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lf-aurora{position:absolute;inset:-50% -10% auto -10%;height:200%;z-index:0;pointer-events:none;filter:blur(46px);opacity:.5}
.lf-aurora span{position:absolute;border-radius:50%;mix-blend-mode:screen;will-change:transform}
.lf-aurora .a1{width:48%;height:120%;left:-6%;top:-10%;background:radial-gradient(circle at 30% 30%,#10b981,transparent 68%)}
.lf-aurora .a2{width:44%;height:120%;right:-6%;top:-6%;background:radial-gradient(circle at 60% 40%,#34d399,transparent 68%)}
@media (prefers-reduced-motion:no-preference){
  .lf-aurora .a1{animation:lfdrift 19s ease-in-out infinite}
  .lf-aurora .a2{animation:lfdrift 22s ease-in-out infinite;animation-delay:-7s}
}
@keyframes lfdrift{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(4%,4%,0) scale(1.1)}}

/* ---- Article typography ---- */
.article{width:min(720px,92%);margin:0 auto;padding:3.4rem 0 1rem}
.article>p:first-of-type{font-size:1.24rem;line-height:1.62;color:#2c3b38;margin-bottom:1.3rem}
.article h2{font-size:1.6rem;font-weight:800;color:var(--ink);margin:3rem 0 1rem;letter-spacing:-.02em;line-height:1.25}
.article h2::before{content:"";display:block;width:36px;height:3px;border-radius:2px;background:var(--accent);margin-bottom:1rem}
.article h3{font-size:1.18rem;font-weight:700;color:var(--ink);margin:2rem 0 .55rem;letter-spacing:-.01em}
.article p{margin:0 0 1.15rem;font-size:1.06rem}
.article ul,.article ol{margin:0 0 1.2rem 1.3rem}
.article li{margin-bottom:.55rem;font-size:1.06rem}
.article strong{color:var(--ink);font-weight:700}
.article em{color:var(--muted)}
.article hr{border:0;border-top:1px solid var(--line);margin:2.6rem 0}
@media (max-width:880px){
  .article{padding:2.4rem 0 1rem}
  .article h2{font-size:1.4rem}
  .article>p:first-of-type{font-size:1.12rem}
}

/* ---- Content blocks: callout, disclaimer, tables, lists ---- */
.callout{background:var(--accent-soft);border:1px solid #c7f0df;border-left:4px solid var(--accent);border-radius:12px;padding:1.1rem 1.3rem;margin:1.8rem 0;font-size:1rem;color:#155e48}
.callout strong{color:#0c4a37}
.disclaimer{background:var(--paper-2);border:1px solid var(--line);border-radius:12px;padding:1rem 1.25rem;margin:1.6rem 0;font-size:.92rem;color:var(--muted);font-style:italic}
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1.6rem 0}
.tbl{width:100%;min-width:34rem;border-collapse:separate;border-spacing:0;margin:0;font-size:.96rem;box-shadow:var(--shadow);border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.tbl th{background:var(--ink);color:#eaf5f0;text-align:left;padding:.8rem 1rem;font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}
.tbl td{padding:.78rem 1rem;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.55}
.tbl tr:last-child td{border-bottom:0}
.tbl tbody tr:nth-child(even) td{background:#fafcfb}
@media (max-width:880px){.tbl{font-size:.85rem}}
.checklist{list-style:none;margin-left:0}
.checklist li{position:relative;padding-left:2.3rem;margin-bottom:.8rem}
.checklist li::before{content:"\2713";position:absolute;left:0;top:.05rem;width:1.5rem;height:1.5rem;background:var(--accent-soft);color:var(--accent-d);border-radius:7px;display:grid;place-items:center;font-size:.85rem;font-weight:800;border:1px solid #c7f0df}
.takeaways{counter-reset:t;list-style:none;margin-left:0}
.takeaways li{position:relative;padding-left:2.8rem;margin-bottom:1rem}
.takeaways li::before{counter-increment:t;content:counter(t);position:absolute;left:0;top:-.05rem;width:1.9rem;height:1.9rem;background:var(--accent);color:#04231b;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:.92rem;box-shadow:0 3px 8px rgba(16,185,129,.3)}
.sources{font-size:.9rem;color:var(--muted)}
.sources li{margin-bottom:.4rem}

/* ---- Feature cards + FAQ details (product pages) ---- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.1rem;margin:1.8rem 0}
.feature{background:#fff;border:1px solid var(--line);border-radius:14px;padding:1.25rem 1.3rem;box-shadow:var(--shadow)}
.feature .ico{width:38px;height:38px;border-radius:10px;background:var(--accent-soft);color:var(--accent-d);display:grid;place-items:center;font-size:1.1rem;font-weight:800;border:1px solid #c7f0df;margin-bottom:.7rem}
.feature h3{margin:0 0 .35rem;font-size:1.05rem}
.feature p{margin:0;font-size:.96rem;color:var(--muted);line-height:1.6}
details.faq-item{border:1px solid var(--line);border-radius:12px;padding:.9rem 1.1rem;margin-bottom:.7rem;background:#fff}
details.faq-item summary{cursor:pointer;font-weight:700;color:var(--ink)}
details.faq-item p{margin:.6rem 0 0;color:var(--muted)}
@media (max-width:880px){.feature-grid{grid-template-columns:1fr}}

/* ---- Cards (hover accent) ---- */
.card{position:relative}
.card::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;border-radius:14px 14px 0 0;background:linear-gradient(90deg,#10b981,#34d399);transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.card:hover::after{transform:scaleX(1)}

/* ---- CTA bands ---- */
.inline-cta{background:radial-gradient(500px 250px at 50% -30%,rgba(16,185,129,.28),transparent 60%),linear-gradient(135deg,var(--ink),var(--ink-2));border-radius:20px;padding:2.2rem;text-align:center;color:#eaf5f0;margin:2.8rem 0;box-shadow:var(--shadow-lg)}
.inline-cta h3{color:#fff;font-size:1.4rem;font-weight:800;margin-bottom:.5rem}
.inline-cta p{color:#cfe3dc;margin-bottom:1.3rem}
.capture-sec{padding:3.5rem 0}
.capture{background:radial-gradient(600px 300px at 50% -20%,rgba(16,185,129,.26),transparent 60%),linear-gradient(135deg,var(--ink),var(--ink-2));border-radius:24px;padding:3.2rem 2rem;text-align:center;color:#eaf5f0;box-shadow:var(--shadow-lg)}
.capture h2{color:#fff;font-size:1.95rem;font-weight:800;margin-bottom:.6rem;letter-spacing:-.02em}
.capture p{color:#cfe3dc;margin-bottom:1.6rem;max-width:46ch;margin-left:auto;margin-right:auto}
@media (max-width:880px){.capture h2{font-size:1.6rem}}

/* ---- Forms: lead capture band + guide gate (behaviour in site.js, tags via data-tag) ---- */
.lead-form{display:flex;gap:.6rem;max-width:440px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.lead-form input[type=email],.lead-form input[type=text]:not(.hp){flex:1;min-width:220px;padding:.85rem 1.1rem;border-radius:999px;border:1.5px solid rgba(255,255,255,.2);background:rgba(255,255,255,.96);color:#1d2b29;font-size:1rem}
.lead-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(16,185,129,.35)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.lead-note{margin-top:.9rem;font-size:.8rem;color:#9fc3b8}
.lead-msg{margin-top:1rem;font-weight:600}
.gate{background:linear-gradient(160deg,#ecfdf5,#f6fbf9);border:1px solid #bfead8;border-radius:18px;padding:1.9rem 1.6rem;margin:2.4rem 0;text-align:center;box-shadow:0 10px 30px rgba(16,185,129,.12)}
.gate h3{font-size:1.4rem;color:var(--ink);margin-bottom:.5rem;letter-spacing:-.01em}
.gate>p{color:#155e48;margin-bottom:1.1rem}
.gate form{display:flex;gap:.6rem;flex-wrap:wrap;justify-content:center;max-width:540px;margin:0 auto}
.gate input.gf{flex:1;min-width:190px;padding:.85rem 1.1rem;border-radius:999px;border:1.5px solid var(--line);font-size:1rem;background:#fff;color:var(--text)}
.gate input.gf:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(16,185,129,.35)}
.gate .hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.gate .gate-note{font-size:.8rem;color:var(--muted);margin:.8rem 0 0}
.gate .gate-msg{font-weight:600;margin-top:.8rem;min-height:1.1em}

/* ---- Footer (markup: partials/footer.html) ---- */
footer{background:var(--ink-2);color:#9fc3b8;padding:3rem 0 2rem}
.foot-top{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;padding-bottom:1.6rem;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-col h4{color:#eaf5f0;font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:.8rem}
.foot-col a{display:block;color:#9fc3b8;font-size:.92rem;margin-bottom:.45rem}
.foot-col a:hover{color:#fff}
.foot-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-top:1.4rem;font-size:.85rem}

/* ---- Focus: default ring + light ring on dark bands ---- */
:focus-visible{outline:2px solid #047857;outline-offset:2px}
header :focus-visible,footer :focus-visible,.hero-strip :focus-visible,.inline-cta :focus-visible,.capture :focus-visible,.lf-skip:focus-visible{outline-color:#6ee7b7}

/* ---- Scroll-reveal (classes added by site.js only when motion is allowed) ---- */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.16,.84,.44,1),transform .7s cubic-bezier(.16,.84,.44,1)}
  .reveal.in{opacity:1;transform:none}
  .reveal.d1{transition-delay:.07s}
  .reveal.d2{transition-delay:.14s}
  .reveal.d3{transition-delay:.21s}
  .reveal.d4{transition-delay:.28s}
  .reveal.d5{transition-delay:.35s}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1!important;transform:none!important}
}

/* ---- Print ---- */
@media print{
  .nav,.menu-btn,.inline-cta,.capture-sec,footer,.gate{display:none!important}
  .hero-strip{background:none;color:#000;padding:0 0 1rem}
  .hero-strip h1{color:#000}
  .crumbs,.hero-strip .meta{color:#555}
  .article{width:100%;padding:0}
  .article.locked .gate ~ *{display:block!important}
  body{font-size:12pt;background:#fff}
  .tbl{box-shadow:none}
}