/* KeepMyChat — single-column editorial pages; hero pairs a chat with the extract it becomes.
   Palette and type follow the two tools (teal = WhatsApp extract, rust = Gmail extract, IBM Plex). */
:root{
  --bg:#F2F5F4; --surface:#FFFFFF; --surface-2:#E8EEEC; --ink:#14201E; --muted:#56635F; --line:#D3DCD9;
  --accent:#0F5C55; --accent-ink:#FFFFFF; --accent-soft:#DCECE8;
  --rust:#8A3B12; --rust-soft:#F4E6DC; --star:#F3C94A; --star-soft:#FCF1CC;
  --bubble-me:#DDF0E8; --bubble-them:#FFFFFF;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --serif:"IBM Plex Serif",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --wrap:1080px;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0E1514; --surface:#16201F; --surface-2:#1C2826; --ink:#E3EBE9; --muted:#97A6A2; --line:#2B3936;
    --accent:#5CC2B3; --accent-ink:#0A1312; --accent-soft:#1D3934;
    --rust:#E9915F; --rust-soft:#3A271B; --star:#E2B93B; --star-soft:#3A321A;
    --bubble-me:#1F3F39; --bubble-them:#26332F;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0E1514; --surface:#16201F; --surface-2:#1C2826; --ink:#E3EBE9; --muted:#97A6A2; --line:#2B3936;
  --accent:#5CC2B3; --accent-ink:#0A1312; --accent-soft:#1D3934;
  --rust:#E9915F; --rust-soft:#3A271B; --star:#E2B93B; --star-soft:#3A321A;
  --bubble-me:#1F3F39; --bubble-them:#26332F;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
img,svg{max-width:100%}
a{color:var(--accent);text-underline-offset:2px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;text-wrap:balance;margin:0}
h1{font-size:clamp(32px,5.2vw,54px);letter-spacing:-.01em}
h2{font-size:clamp(24px,3.2vw,34px)}
h3{font-size:20px}
p{margin:0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;padding-block:12px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:9px;font-family:var(--serif);font-weight:600;font-size:20px;color:var(--ink);text-decoration:none}
.logo svg{width:28px;height:28px;flex:none}
.logo b{font-weight:600;color:var(--accent)}
.nav{display:flex;gap:18px;flex-wrap:wrap;align-items:center;margin-left:auto;font-size:15px}
.nav a{color:var(--ink);text-decoration:none}
.nav a:hover{color:var(--accent)}
.langs{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-size:13px;font-weight:600}
.langs a{padding:4px 10px;color:var(--muted);text-decoration:none}
.langs a[aria-current="true"]{background:var(--ink);color:var(--bg)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:10px;padding:12px 18px;font-weight:600;font-size:16px;text-decoration:none;border:1px solid transparent;line-height:1.2}
.btn.wa{background:var(--accent);color:var(--accent-ink)}
.btn.gm{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn.gm:hover{border-color:var(--rust)}
.btn.wa:hover{filter:brightness(1.08)}
.btn .arr{font-family:var(--mono)}

/* hero */
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;padding-block:64px 56px;align-items:center}
.hero-copy{display:grid;gap:20px;min-width:0}
.lead{font-size:19px;color:var(--muted);max-width:34em}
.ctas{display:flex;gap:10px;flex-wrap:wrap}
.meta{font-size:14px;color:var(--muted);display:flex;gap:6px 16px;flex-wrap:wrap}
.meta span::before{content:"✓ ";color:var(--accent);font-weight:600}

.demo{position:relative;display:grid;gap:14px;min-width:0}
.demo-tag{position:absolute;top:-10px;right:12px;z-index:2;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;background:var(--ink);color:var(--bg);padding:3px 9px;border-radius:999px}
.phone{background:var(--surface-2);border:1px solid var(--line);border-radius:18px;padding:16px;display:grid;gap:8px}
.bub{max-width:82%;padding:8px 11px 6px;border-radius:12px;font-size:14.5px;line-height:1.4;box-shadow:0 1px 0 var(--line)}
.bub small{display:block;text-align:right;font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:2px}
.bub.them{background:var(--bubble-them);justify-self:start;border-top-left-radius:4px}
.bub.me{background:var(--bubble-me);justify-self:end;border-top-right-radius:4px}
.voice{display:flex;align-items:center;gap:9px;min-width:190px}
.voice .play{width:26px;height:26px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-size:11px;flex:none}
.voice .wave{flex:1;height:18px;background:repeating-linear-gradient(90deg,var(--muted) 0 2px,transparent 2px 5px);opacity:.45;mask:linear-gradient(90deg,#000 0 30%,rgba(0,0,0,.5) 30% 100%);-webkit-mask:linear-gradient(90deg,#000 0 30%,rgba(0,0,0,.5) 30% 100%)}
.flow{justify-self:center;font-family:var(--mono);font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px}
.flow::before,.flow::after{content:"";width:28px;height:1px;background:var(--line)}
.doc{background:var(--surface);border:1px solid var(--line);border-radius:6px;box-shadow:0 18px 40px -24px rgba(10,30,28,.45);padding:18px 18px 12px;overflow-x:auto}
.doc-h{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);border-bottom:2px solid var(--ink);padding-bottom:8px;margin-bottom:4px}
.doc-h strong{font-family:var(--serif);font-size:15px;color:var(--ink)}
.doc table{width:100%;border-collapse:collapse;font-size:13px;min-width:360px}
.doc td{padding:7px 6px;border-bottom:1px solid var(--line);vertical-align:top}
.doc td.n{font-family:var(--mono);color:var(--muted);white-space:nowrap;width:1%}
.doc td.t{font-family:var(--mono);font-size:12px;color:var(--muted);white-space:nowrap;width:1%}
.doc td.s{font-weight:600;white-space:nowrap;width:1%}
.doc tr.star td{background:var(--star-soft)}
.doc tr.star td.n::before{content:"★ ";color:var(--star)}
.doc .tr{display:block;margin-top:3px;font-size:12.5px;color:var(--muted);font-style:italic}

/* sections */
section.band{padding-block:72px}
section.band.alt{background:var(--surface);border-block:1px solid var(--line)}
.sec-h{display:grid;gap:10px;max-width:46em;margin-bottom:36px}
.sec-h p{color:var(--muted);font-size:17px}

.tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.tool{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:26px;display:grid;gap:16px;align-content:start;border-top:4px solid var(--accent)}
.tool.gmail{border-top-color:var(--rust)}
.tool .src{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.tool ul{margin:0;padding:0;list-style:none;display:grid;gap:9px}
.tool li{padding-left:22px;position:relative}
.tool li::before{content:"";position:absolute;left:2px;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--accent)}
.tool.gmail li::before{background:var(--rust)}
.tool .btn{justify-self:start}
.tool.gmail .btn{background:var(--rust);color:#fff;border-color:var(--rust)}
:root[data-theme="dark"] .tool.gmail .btn{color:#1A0D05}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .tool.gmail .btn{color:#1A0D05}}

.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;counter-reset:s;list-style:none;margin:0;padding:0}
.steps li{display:grid;gap:8px;align-content:start;counter-increment:s;border-top:1px solid var(--ink);padding-top:16px}
.steps li::before{content:counter(s);font-family:var(--mono);font-size:13px;color:var(--accent);font-weight:500}
.steps p{color:var(--muted)}

.priv{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.priv > div{border-radius:14px;padding:24px;display:grid;gap:12px;align-content:start}
.priv .yes{background:var(--accent-soft)}
.priv .no{background:var(--surface-2)}
.priv ul{margin:0;padding-left:20px;display:grid;gap:6px}
.priv .note{grid-column:1/-1;font-size:14.5px;color:var(--muted);max-width:60em}

.uses{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.use{display:grid;gap:8px;align-content:start}
.use p{color:var(--muted)}
.use .k{font-family:var(--mono);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}

.faq{display:grid;gap:0;max-width:52em}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--accent);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin-top:10px;color:var(--muted);max-width:44em}

/* article pages (guides, legal) */
.article{padding-block:48px 72px}
.article .wrap{max-width:780px}
.article header{display:grid;gap:14px;margin-bottom:36px}
.article header p{color:var(--muted);font-size:18px}
.prose{display:grid;gap:16px}
.prose h2{margin-top:28px;font-size:26px}
.prose h3{margin-top:10px}
.prose ol,.prose ul{margin:0;padding-left:22px;display:grid;gap:8px}
.prose code{font-family:var(--mono);font-size:.9em;background:var(--surface-2);padding:1px 5px;border-radius:4px;word-break:break-word}
.prose .tip{background:var(--star-soft);border-radius:10px;padding:14px 16px}
.prose .warn{background:var(--rust-soft);border-radius:10px;padding:14px 16px}
.prose .cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.prose table{border-collapse:collapse;width:100%;font-size:15px}
.prose td,.prose th{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
.updated{font-size:14px;color:var(--muted)}

/* footer */
.foot{border-top:1px solid var(--line);padding-block:36px 48px;font-size:14px;color:var(--muted)}
.foot .wrap{display:grid;grid-template-columns:minmax(0,1.3fr) repeat(2,minmax(0,1fr));gap:28px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot a{color:var(--ink);text-decoration:none}
.foot a:hover{color:var(--accent)}
.foot .fine{grid-column:1/-1;font-size:13px;border-top:1px solid var(--line);padding-top:16px}

@media (max-width:860px){
  .hero .wrap{grid-template-columns:minmax(0,1fr);gap:40px;padding-block:40px}
  .tools,.priv{grid-template-columns:minmax(0,1fr)}
  .steps,.uses{grid-template-columns:minmax(0,1fr);gap:22px}
  .foot .wrap{grid-template-columns:minmax(0,1fr)}
  .nav{margin-left:0;width:100%;gap:14px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}