/* Flint — shared styles for the tool and article pages.
 * The homepage and redeem page keep their own inline CSS; this is for the
 * pages added after them, so they stay consistent without duplicating it. */

:root{
  --bg:#090C12; --surface:#0E1219; --surface-alt:#151A23; --hairline:rgba(255,255,255,.09);
  --text:#ECEFF5; --chrome:#F4F6FA; --muted:#6E7889; --text-dim:#A7B0BE;
  --ember:#FF8A3D; --amber:#F5A623; --ember-glow:#FF6A2A; --good:#2DD4A7; --bad:#FF6B6B;
  --ui:'Manrope',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,monospace;
  --display:'Space Grotesk',var(--ui);
  --expo:cubic-bezier(.16,1,.3,1); --quart:cubic-bezier(.25,1,.5,1); --maxw:880px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--ui);line-height:1.65;
  letter-spacing:.01em;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--ember);outline-offset:3px;border-radius:4px}
::selection{background:rgba(255,138,61,.28);color:#fff}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.eyebrow{font-family:var(--mono);font-weight:600;font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--amber);margin:0}

.spark{display:inline-block;line-height:0;flex:none}
.wordmark{font-family:var(--display);font-weight:700;letter-spacing:-.04em;display:inline-flex;line-height:1}
.wordmark .flint{background:linear-gradient(180deg,#F6F4F2 0%,#CFCBC6 55%,#857F78 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}

header.nav{position:sticky;top:0;z-index:50;background:rgba(9,12,18,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--hairline)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:62px;
  max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.nav-brand{display:flex;align-items:center;gap:10px}.nav-brand .wordmark{font-size:20px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--ui);
  font-weight:700;font-size:15px;letter-spacing:-.01em;border:0;border-radius:12px;cursor:pointer;
  padding:13px 22px;min-height:48px;transition:transform .15s var(--expo),filter .2s var(--quart)}
.btn-ember{color:#1a0d03;background:linear-gradient(180deg,#FFC24B 0%,#FF7A2F 100%);
  box-shadow:0 6px 26px -8px rgba(255,106,42,.6),inset 0 1px 0 rgba(255,255,255,.35)}
.btn-ember:hover{filter:brightness(1.06)}.btn-ember:active{transform:translateY(1px)}
.nav .btn{padding:9px 15px;min-height:38px;font-size:13.5px}

main{padding-block:clamp(34px,5vw,56px) clamp(50px,7vw,86px)}
h1{font-weight:800;letter-spacing:-.033em;line-height:1.06;font-size:clamp(30px,5.2vw,46px);
  margin:12px 0 0;color:var(--chrome);text-wrap:balance}
h2{font-weight:800;letter-spacing:-.025em;line-height:1.15;font-size:clamp(22px,3vw,30px);
  margin:44px 0 0;color:var(--chrome)}
h3{font-weight:700;letter-spacing:-.01em;font-size:19px;margin:30px 0 0;color:var(--text)}
p{color:var(--text-dim);font-size:16.5px;margin:14px 0 0}
.lede{font-size:18.5px;color:var(--text-dim);margin-top:16px}
ul,ol{color:var(--text-dim);font-size:16.5px;padding-left:22px;margin:14px 0 0}
li{margin:8px 0}
b,strong{color:var(--text);font-weight:700}
main a:not(.btn){color:var(--ember)}main a:not(.btn):hover{text-decoration:underline}
table{width:100%;border-collapse:collapse;margin-top:18px;font-size:15.5px;display:block;overflow-x:auto}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--hairline);color:var(--text-dim)}
th{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}
td b{color:var(--chrome)}
blockquote{margin:22px 0 0;padding:16px 18px;background:var(--surface);border-left:2px solid var(--ember);
  border-radius:0 12px 12px 0}
blockquote p{margin:0;color:var(--text-dim)}
code{font-family:var(--mono);font-size:14px;background:var(--surface-alt);padding:2px 6px;border-radius:5px;color:var(--chrome)}

/* calculator */
.calc{margin-top:clamp(24px,3.4vw,32px);background:var(--surface);border:1px solid var(--hairline);
  border-radius:18px;padding:clamp(18px,2.6vw,26px)}
.fields{display:grid;gap:15px}
@media(min-width:620px){.fields.two{grid-template-columns:1fr 1fr}}
.field label{display:block;font-family:var(--mono);font-size:10px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.inputwrap{display:flex;align-items:center;gap:10px;background:#0B0F16;border:1px solid var(--hairline);
  border-radius:11px;padding:0 13px;min-height:52px}
.inputwrap:focus-within{border-color:rgba(255,138,61,.5)}
.inputwrap input,.inputwrap select{flex:1;min-width:0;background:none;border:0;outline:none;color:var(--chrome);
  font-family:var(--mono);font-weight:600;font-size:17px;padding:13px 0}
.inputwrap select{cursor:pointer}
.inputwrap select option{background:#0B0F16}
.unit{font-family:var(--mono);font-size:12.5px;color:var(--muted);flex:none}
.hint{font-size:13px;color:var(--muted);margin:7px 2px 0}

#result{margin-top:20px;padding-top:18px;border-top:1px solid var(--hairline)}
.res{display:grid;gap:11px;margin:0}
.res>div{display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.res dt{font-size:15px;color:var(--text-dim);margin:0}
.res dd{margin:0;font-family:var(--mono);font-size:17px;color:var(--chrome);text-align:right}
.res dd b{color:var(--ember);font-weight:700}
.res-empty{margin:0;font-size:14.5px;color:var(--muted)}
.verdict{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-weight:700;font-size:14px;
  letter-spacing:.14em;border-radius:11px;padding:12px 14px;margin-bottom:16px}
.verdict span{font-family:var(--ui);font-weight:500;font-size:14px;letter-spacing:0;line-height:1.45}
.verdict.pass{color:var(--good);background:rgba(45,212,167,.10);border:1px solid rgba(45,212,167,.34)}
.verdict.fail{color:var(--bad);background:rgba(255,107,107,.10);border:1px solid rgba(255,107,107,.34)}

/* product tie-in */
.tie{margin-top:clamp(34px,4.5vw,50px);border:1px solid rgba(255,138,61,.28);border-radius:18px;
  padding:clamp(20px,3vw,30px);background:radial-gradient(120% 120% at 0% 0%,rgba(255,106,42,.12),transparent 55%),var(--surface)}
.tie h2{margin:12px 0 0;font-size:clamp(20px,2.6vw,26px)}
.tie p{margin-top:10px}
.tie .btn{margin-top:18px}
.tie .note{font-size:13px;color:var(--muted);margin-top:11px}

/* related tools */
.tools{display:grid;gap:12px;margin-top:20px}
@media(min-width:620px){.tools{grid-template-columns:1fr 1fr}}
.tool{display:block;background:var(--surface);border:1px solid var(--hairline);border-radius:13px;padding:15px 17px}
.tool:hover{border-color:rgba(255,138,61,.4)}
.tool b{display:block;color:var(--text);font-size:15.5px}
.tool span{display:block;color:var(--muted);font-size:13.5px;margin-top:3px}

/* article list */
.posts{display:grid;gap:14px;margin-top:26px}
.post{display:block;background:var(--surface);border:1px solid var(--hairline);border-radius:15px;padding:19px 21px}
.post:hover{border-color:rgba(255,138,61,.4)}
.post b{display:block;color:var(--chrome);font-size:18px;font-weight:700;letter-spacing:-.01em}
.post span{display:block;color:var(--text-dim);font-size:14.5px;margin-top:6px}
.meta{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-top:14px}

.safety{margin-top:36px;padding-top:20px;border-top:1px solid var(--hairline);font-size:13.5px;color:var(--muted)}

footer{border-top:1px solid var(--hairline);padding-block:38px;margin-top:20px}
.foot-in{display:flex;flex-wrap:wrap;gap:18px 30px;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.foot-links{display:flex;flex-wrap:wrap;gap:16px 22px;font-size:14px;color:var(--text-dim)}
.foot-links a:hover{color:var(--text)}
.foot-meta{width:100%;font-size:12.5px;color:var(--muted);border-top:1px solid var(--hairline);
  margin-top:20px;padding-top:18px}
.verdict.warn{color:var(--amber);background:rgba(245,166,35,.10);border:1px solid rgba(245,166,35,.34)}
.verdict{flex-wrap:wrap}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg label{flex:1 1 auto;min-width:96px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:block;text-align:center;font-size:14px;font-weight:600;color:var(--text-dim);
  background:#0B0F16;border:1px solid var(--hairline);border-radius:10px;padding:11px 10px;cursor:pointer}
.seg input:checked + span{color:#1a0d03;background:linear-gradient(180deg,#FFC24B,#FF7A2F);border-color:transparent}
.seg input:focus-visible + span{outline:2px solid var(--ember);outline-offset:2px}
.pipes{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:620px){.pipes{grid-template-columns:repeat(4,1fr)}}
#timer{margin-top:20px;padding-top:18px;border-top:1px solid var(--hairline);display:flex;
  align-items:center;gap:14px;flex-wrap:wrap}
#timer.done #t-clock{color:var(--good)}
#t-phase{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);flex:1 1 100%}
#t-clock{font-family:var(--mono);font-weight:700;font-size:34px;letter-spacing:-.02em;color:var(--chrome);line-height:1}
#timer button{font-family:var(--ui);font-weight:700;font-size:14px;color:var(--chrome);background:#161C26;
  border:1px solid var(--hairline);border-radius:10px;padding:10px 16px;min-height:42px;cursor:pointer}
#timer button:hover{background:#1c232f}