/* ============================================================================
   EarnedCurve — Experience Design System  (assets/experience.css)
   Dark-first, light-aware. Same primitives as the sibling Vantis products
   (ScheduleInsight / RunMonteCarlo) so the family reads as one house style;
   the accent family is EarnedCurve's own teal→mint, derived from the app's
   sky→teal brand mark rather than the sibling indigo or orange.

   Conventions:
     - Token names mirror the sibling set so theme.js light overrides keep working.
     - Everything degrades gracefully without JS and respects reduced-motion.
   ========================================================================== */

:root{
  /* Core surfaces (dark defaults) */
  --bg:#05080B; --bgSub:#090D12; --surface:#0D1218; --surfaceHi:#131A22; --card:#101720;
  --hair:#1E2731; --hairSoft:#161D25;

  /* Text */
  --txt:#EEF3F5; --txtMid:#9FAEB6; --txtLow:#87949C; --txtDim:#78858D;

  /* Brand accent family — teal → cyan → mint (EarnedCurve) */
  --accent:#19C6B0; --accent2:#3BC9DB; --accent3:#7CE8A8;
  --accentSub:rgba(25,198,176,0.12); --accentLine:rgba(25,198,176,0.34);
  --glow:rgba(25,198,176,.50);
  /* Filled-button colours — deep enough for WHITE label text to pass WCAG AA
     in both themes (5.07:1 dark / 5.98:1 light). The brand --accent is a
     midtone and is legible for neither black nor white. */
  --btnbg:#0C7A85; --btnfg:#FFFFFF;

  /* Signal palette (data viz) */
  --green:#3FD08A; --amber:#E7B14B; --red:#FF6B5E; --plan:#5B9BE8;

  /* Signature gradients */
  --grad-brand:linear-gradient(115deg,#0FA3C8 0%,#19C6B0 48%,#7CE8A8 100%);
  --grad-brand-soft:linear-gradient(115deg,rgba(25,198,176,.16),rgba(124,232,168,.09));
  --grad-text:linear-gradient(100deg,#A8F0E4 0%,#4FD6C4 42%,#7CE8A8 100%);

  /* Type */
  --sans:"Inter",-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --display:"Space Grotesk","Inter",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;

  /* Brand mark tokens (also set in theme.js; restated for safety) */
  --mk-tile:#131A22; --mk-stroke:#1E2731; --mk-curveA:#19C6B0; --mk-curveB:#5B9BE8;

  /* Where a sticky table head parks. A sticky <th> lands ~14px below whatever
     `top` it is given (its containing block is the row group, not the table),
     and the scrolled nav ends at 75px. 58 measures a 0 to -3px gap across the
     pages, so the header meets the nav or tucks just under it — and the nav
     paints over it at z-index 100, so a small overlap is invisible where a gap
     would let rows scroll past in the open. */
  --stick:58px;
  --ease-out:cubic-bezier(.22,1,.36,1);
  --ease-soft:cubic-bezier(.4,0,.2,1);
  --maxw:1240px;
}

/* Light theme: extend theme.js overrides with our new tokens */
html[data-theme="light"]{
  --bg:#FFFFFF; --bgSub:#F5F8F9; --surface:#FFFFFF; --surfaceHi:#EBF1F3; --card:#FFFFFF;
  --hair:#E1E8EB; --hairSoft:#EDF2F4;
  --txt:#0C1418; --txtMid:#465862; --txtLow:#5F7078; --txtDim:#5F7078;
  --accent:#0A7A82; --accent2:#0E7490; --accent3:#0F766E;
  --accentSub:rgba(10,122,130,0.08); --accentLine:rgba(10,122,130,0.28);
  --glow:rgba(10,122,130,.28);
  --btnbg:#0B6E77; --btnfg:#FFFFFF;
  --plan:#2F6FBF;
  /* Signal palette re-derived for white: the dark-theme greens/ambers are
     ~2:1 on white and fail AA as the small metric labels they're used for. */
  --green:#0F7B4F; --amber:#8A6414; --red:#C2352A;
  --grad-text:linear-gradient(100deg,#0A7A82 0%,#0E8C7E 45%,#12796A 100%);
  --mk-tile:#EBF1F3; --mk-stroke:#E1E8EB; --mk-curveA:#0A7A82; --mk-curveB:#2F6FBF;
}

/* ----------------------------------------------------------------- reset */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
/* overflow-x:hidden would make body a scroll container and break position:sticky
   on .xnav — clip trims horizontal overflow without doing that (hidden = fallback) */
html,body{overflow-x:hidden;overflow-x:clip;max-width:100%}
body{
  background:var(--bg);color:var(--txt);font-family:var(--sans);line-height:1.62;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
::selection{background:rgba(25,198,176,.30);color:#fff}
html[data-theme="light"] ::selection{background:rgba(10,122,130,.18);color:#0C1418}

/* slim themed scrollbar */
*{scrollbar-width:thin;scrollbar-color:var(--hair) transparent}
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-thumb{background:var(--hair);border-radius:20px;border:3px solid transparent;background-clip:padding-box}
*::-webkit-scrollbar-thumb:hover{background:var(--accentLine)}

/* ------------------------------------------------------------ atmosphere */
.fx-grain{
  position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}
html[data-theme="light"] .fx-grain{opacity:.25}

.fx-aurora{
  position:fixed;inset:-20% -10% auto -10%;height:80vh;z-index:0;pointer-events:none;
  background:
    radial-gradient(40% 50% at 18% 12%,rgba(25,198,176,.18),transparent 70%),
    radial-gradient(35% 45% at 82% 8%,rgba(91,155,232,.13),transparent 70%),
    radial-gradient(45% 55% at 60% 30%,rgba(124,232,168,.10),transparent 72%);
  filter:blur(20px);opacity:.9;
}
html[data-theme="light"] .fx-aurora{opacity:.5}

/* page content sits above atmosphere */
nav,main,footer,.page-shell{position:relative;z-index:2}

/* scroll progress bar */
.scroll-prog{position:fixed;top:0;left:0;height:2px;width:0;z-index:200;background:var(--grad-brand);box-shadow:0 0 12px var(--glow);transition:width .08s linear}

/* ------------------------------------------------------------------- nav */
/* border-bottom lives on the base state so .scrolled only animates its colour —
   a width jump from 0 makes the colour start at currentcolor (near-white in dark
   mode), flashing a 1px light line at the scroll threshold */
.xnav{position:sticky;top:0;z-index:100;border-bottom:1px solid transparent;transition:background .3s,border-color .3s,backdrop-filter .3s}
.xnav.scrolled{background:color-mix(in srgb,var(--bg) 78%,transparent);backdrop-filter:blur(16px) saturate(140%);border-bottom-color:var(--hair)}
.xnav-inner{display:flex;align-items:center;gap:26px;padding:18px 40px;max-width:var(--maxw);margin:0 auto;transition:padding .3s}
.xnav.scrolled .xnav-inner{padding-top:13px;padding-bottom:13px}
.xbrand{display:flex;align-items:center;gap:10px;font-weight:600}
.xbrand .brand-name{font-size:17px;letter-spacing:-.01em;font-family:var(--display)}
.xnav-links{display:flex;gap:20px;font-size:13.5px;color:var(--txtMid);margin-left:6px}
.xnav-links a{position:relative;padding:4px 0;transition:color .2s}
.xnav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:1.5px;width:0;background:var(--grad-brand);transition:width .25s var(--ease-out)}
.xnav-links a:hover,.xnav-links a[aria-current="page"]{color:var(--txt)}
.xnav-links a:hover::after,.xnav-links a[aria-current="page"]::after{width:100%}
.xnav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.xnav-links a,.xnav-right .login,.xnav-right .btn-accent{white-space:nowrap}
.xnav-right .login{font-size:13.5px;color:var(--txtMid);transition:color .2s}
.xnav-right .login:hover{color:var(--txt)}
.xnav-toggle{display:none;background:none;border:none;color:var(--txt);cursor:pointer;padding:4px}
.xnav-mobile{display:none;flex-direction:column;padding:8px 24px 18px;border-bottom:1px solid var(--hair);background:var(--bgSub)}
.xnav-mobile a{padding:11px 0;font-size:14.5px;color:var(--txtMid);border-bottom:1px solid var(--hairSoft)}
.xnav-mobile a:last-child{border-bottom:none}
.xnav-mobile.open{display:flex}

/* --------------------------------------------------------------- buttons */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:600;font-family:var(--sans);border-radius:8px;padding:12px 22px;cursor:pointer;border:1px solid transparent;transition:transform .2s var(--ease-out),box-shadow .25s,filter .2s,border-color .2s;will-change:transform}
.btn-primary{color:var(--btnfg);background:var(--btnbg)}
.btn-primary:hover{filter:brightness(1.1)}
.btn-ghost{color:var(--txt);background:var(--surfaceHi);border-color:var(--hair)}
.btn-ghost:hover{border-color:var(--accentLine)}
.btn-sm{padding:8px 15px;font-size:13.5px;border-radius:8px}
.btn:active{transform:scale(.97)}
.btn-accent{font-size:13.5px;font-weight:600;color:var(--btnfg);background:var(--btnbg);padding:8px 15px;border-radius:8px;transition:filter .2s}
.btn-accent:hover{filter:brightness(1.1)}

/* ------------------------------------------------------------ typography */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;font-family:var(--mono);color:var(--accent);margin-bottom:18px}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);opacity:.6}
.crumb{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--txtDim);margin-bottom:14px}
.crumb a{color:var(--accent)}
.crumb a:hover{text-decoration:underline}
.gradtext{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
h1,h2,h3{font-family:var(--display);letter-spacing:-.025em;line-height:1.06}

/* generic section wrapper */
.xsec{max-width:var(--maxw);margin:0 auto;padding:96px 40px}
.xsec-title{font-size:clamp(28px,4vw,42px);font-weight:600;letter-spacing:-.03em;margin-bottom:18px;max-width:24ch}
.xsec-lead{font-size:16px;color:var(--txtMid);max-width:62ch;line-height:1.65}

/* -------------------------------------------------------------- surfaces */
.glass{background:color-mix(in srgb,var(--bgSub) 86%,transparent);border:1px solid var(--hair);border-radius:16px;backdrop-filter:blur(8px)}
.panel{background:var(--bgSub);border:1px solid var(--hair);border-radius:16px}
.lift{transition:transform .35s var(--ease-out),border-color .35s,box-shadow .35s}
.lift:hover{transform:translateY(-4px);border-color:var(--accentLine);box-shadow:0 24px 60px -34px rgba(0,0,0,.7)}
html[data-theme="light"] .lift:hover{box-shadow:0 24px 50px -30px rgba(8,50,60,.18)}

.card-grad{position:relative;border-radius:16px;background:var(--bgSub);border:1px solid var(--hair)}
.card-grad::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:var(--grad-brand);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s}
.card-grad:hover::before{opacity:.6}

/* ------------------------------------------------------------ animations */
/* Hidden state only applies once JS has flagged html.xanim — so content is
   ALWAYS visible if the script fails, is blocked, or is slow to run. */
html.xanim [data-reveal]{opacity:0;transform:translateY(26px);will-change:transform,opacity}
html.xanim [data-reveal].is-in{opacity:1;transform:none;transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
html.xanim [data-reveal-stagger]>*{opacity:0;transform:translateY(22px)}
/* opacity-only reveal — for headings containing gradient-clipped text, which a
   transform would render transparent. Never apply transform to these. */
html.xanim [data-fade]{opacity:0}
html.xanim [data-fade].is-in{opacity:1;transition:opacity .9s var(--ease-out)}
.float{animation:floaty 6s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* marquee */
.marquee{overflow:hidden;-webkit-mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;gap:48px;width:max-content;animation:scrollx 32s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* counters / stat */
.statline{display:grid;grid-template-columns:repeat(4,1fr);max-width:var(--maxw);margin:0 auto;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.statline .stat{padding:30px 28px;position:relative}
.statline .stat+.stat{border-left:1px solid var(--hair)}
.stat-big{font-size:30px;font-weight:600;font-family:var(--mono);letter-spacing:-.02em;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-sub{font-size:12.5px;color:var(--txtMid);margin-top:8px}
@media(max-width:760px){.statline{grid-template-columns:1fr 1fr}.statline .stat:nth-child(odd){border-left:none}}

/* ------------------------------------------------------------------ misc */
.chip{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-family:var(--mono);color:var(--txtMid);padding:6px 12px;border:1px solid var(--hair);border-radius:999px;background:var(--bgSub)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
.kbd{font-family:var(--mono);font-size:12px;color:var(--accent)}
.brandmark{display:inline-block;vertical-align:middle;flex:none}
.lo{color:var(--txtMid);font-weight:500}
.xnav .brandmark{width:30px;height:30px}

/* generic feature cards (shared by every page) */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.fcard{background:var(--bgSub);border:1px solid var(--hair);border-radius:16px;padding:24px 22px}
.fcard.hi{position:relative;overflow:hidden}
.fcard.hi::before{content:"";position:absolute;inset:0;background:var(--grad-brand-soft);pointer-events:none}
.fcard .ic{position:relative;width:40px;height:40px;border-radius:11px;background:var(--surfaceHi);border:1px solid var(--accentLine);display:grid;place-items:center;font-size:19px;color:var(--accent);margin-bottom:14px}
.fcard .h{position:relative;font-size:15.5px;font-weight:600;margin-bottom:8px;font-family:var(--display)}
.fcard .b{position:relative;font-size:13px;color:var(--txtMid);line-height:1.6}
@media(max-width:820px){.grid3,.grid2{grid-template-columns:1fr}}

/* comparison / spec table (shared: compare.html, methodology.html, pricing.html) */
.tbl{border:1px solid var(--hair);border-radius:16px;background:var(--bgSub)}
.tbl-scroll{overflow-x:auto}
.tbl table{border-collapse:collapse;width:100%;min-width:640px;font-size:13px}
.tbl th,.tbl td{padding:14px 18px;text-align:left;border-top:1px solid var(--hairSoft);vertical-align:top}
.tbl thead th{border-top:none;border-bottom:1px solid var(--hair);font-size:10.5px;text-transform:uppercase;letter-spacing:.07em;font-family:var(--mono);color:var(--txtDim);font-weight:600;white-space:nowrap}

/* Sticky table heads.
   The wrapper used to be overflow:hidden for the rounded corners, and that is
   precisely what kept this from working: a box with overflow in ANY axis is a
   scroll container, and position:sticky resolves against the nearest one. The
   header would have pinned to a box that never scrolls, i.e. not moved at all.
   So the clipping goes, corner rounding moves onto the corner cells, and the
   header pins to the page under the nav — but only above the width where the
   table still fits, because narrower than that we need the horizontal scroll
   container back and stickiness has to yield to it. */
.tbl thead th:first-child{border-top-left-radius:15px}
.tbl thead th:last-child{border-top-right-radius:15px}
.tbl tbody tr:last-child td:first-child{border-bottom-left-radius:15px}
.tbl tbody tr:last-child td:last-child{border-bottom-right-radius:15px}
@media(min-width:1080px){
  .tbl-scroll{overflow:visible}
  .tbl thead th{position:sticky;top:var(--stick);z-index:4;background:var(--bgSub);
    box-shadow:inset 0 -1px 0 var(--hair)}
}
.tbl td:first-child{color:var(--txtMid)}
.tbl .ec{color:var(--accent);font-weight:600}
.tbl .no{color:var(--txtLow)}
.tbl tbody tr:hover{background:color-mix(in srgb,var(--surfaceHi) 55%,transparent)}

/* faq (shared: index.html, pricing.html) */
.faq-inner{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--hair)}
.faq-q{width:100%;text-align:left;background:none;border:none;color:var(--txt);font-family:var(--display);font-size:16px;font-weight:600;padding:22px 0;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q .chev{color:var(--txtDim);font-family:var(--mono);font-size:20px;transition:transform .25s var(--ease-out)}
.faq-item.open .chev{transform:rotate(45deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease-soft);font-size:13.5px;color:var(--txtMid);line-height:1.68}
.faq-item.open .faq-a{max-height:460px;padding-bottom:22px}

/* final cta (shared) */
.cta-sec{position:relative;padding:110px 40px;text-align:center;overflow:hidden}
.cta-sec::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 80% at 50% 0%,rgba(25,198,176,.15),transparent 70%);pointer-events:none}
.cta-h{position:relative;font-size:clamp(30px,5vw,52px);font-weight:700;letter-spacing:-.03em;margin-bottom:18px;line-height:1.05}
.cta-p{position:relative;font-size:15.5px;color:var(--txtMid);margin:0 auto 30px;max-width:520px;line-height:1.55}
.cta-btns{position:relative;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-note{position:relative;font-size:12px;color:var(--txtDim);margin-top:18px;font-family:var(--mono)}
@media(max-width:820px){.cta-sec{padding:80px 20px}}

/* page header (inner pages) */
.phead{max-width:var(--maxw);margin:0 auto;padding:64px 40px 10px}
.phead h1{font-size:clamp(34px,5vw,54px);font-weight:700;letter-spacing:-.035em;line-height:1.04;margin-bottom:18px;max-width:24ch}
.phead p{font-size:16.5px;color:var(--txtMid);max-width:64ch;line-height:1.65}
@media(max-width:920px){.phead{padding:48px 20px 8px}}

/* footer */
.xfoot{position:relative;z-index:2;border-top:1px solid var(--hair);max-width:var(--maxw);margin:0 auto;padding:56px 40px 34px}
.xfoot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:30px}
.xfoot p{font-size:12.5px;color:var(--txtMid);line-height:1.65;max-width:300px}
.xfoot h2{font-size:11px;color:var(--txtDim);letter-spacing:.1em;text-transform:uppercase;font-family:var(--mono);margin-bottom:14px;font-weight:600;line-height:1.4}
.xfoot-col a{display:block;font-size:13px;color:var(--txtMid);margin-bottom:9px;transition:color .2s,transform .2s}
.xfoot-col a:hover{color:var(--txt);transform:translateX(3px)}
.xfoot-bottom{display:flex;align-items:center;gap:12px;margin-top:36px;padding-top:20px;border-top:1px solid var(--hair);font-size:12px;color:var(--txtDim);flex-wrap:wrap}
.xfoot-bottom .right{margin-left:auto}
.xfoot-social{display:flex;gap:8px}
.xfoot-social a{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border:1px solid var(--hair);border-radius:8px;color:var(--txtMid);transition:color .15s,border-color .15s}
.xfoot-social a:hover{color:var(--txt);border-color:var(--accentLine)}
.xfoot-tm{margin-top:16px;padding-top:14px;border-top:1px solid var(--hair);font-size:11px;line-height:1.65;color:var(--txtDim)}
@media(max-width:880px){.xfoot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:920px){.xfoot{padding:48px 20px 30px}}

/* ------------------------------------------------------ responsive nav */
/* The nav carries four real pages and they stay visible: the links only fold
   into the menu button when there is genuinely no room for them. */
@media(max-width:870px){
  .xnav-inner{padding:16px 20px;gap:14px}
  .xnav-links{display:none}
  .xnav-toggle{display:inline-flex}
}
@media(max-width:560px){
  .xnav-right{gap:10px}
  .xnav-right .login{display:none}   /* the menu still carries it */
}
@media(max-width:920px){
  .xsec{padding:64px 20px}
}

/* ------------------------------------------------- reduced motion guard */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1!important;transform:none!important}
  .fx-grain,.fx-aurora{display:none}
  .marquee-track,.float{animation:none!important}
}

/* ── Accessibility: visible keyboard focus (WCAG 2.4.7 / 2.4.11) ────────── */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible,
[role="button"]:focus-visible,[role="tab"]:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:3px;
}

/* ── Accessibility: visually-hidden text for screen readers (WCAG 1.3.1) ── */
.sr-only{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ── Accessibility: skip link + main landmark (WCAG 2.4.1 / 1.3.1) ──────── */
.skip-link{
  position:fixed;left:12px;top:-64px;z-index:1000;
  background:var(--btnbg);color:var(--btnfg);
  padding:10px 18px;border-radius:9px;font-weight:600;font-size:14px;
  box-shadow:0 6px 20px rgba(0,0,0,.28);transition:top .18s ease;
}
.skip-link:focus{top:12px;outline:2px solid var(--btnfg);outline-offset:2px}
main:focus{outline:none}