/* ==========================================================================
   Bilio design system — shared by every page on bilio.dev
   Tokens, base, logo, navigation, components, RTL, mobile sheet.
   ========================================================================== */

:root{
  --ink:#0E1726;
  --muted:#4A5568;
  --accent:#1E4FD8;
  --accent-hover:#163BA3;
  --soft:#F5F7FB;
  --soft-2:#EEF2FB;
  --tint:#E8EEFC;
  --tint-2:#E3EAFB;
  --line:#E2E7F0;
  --input:#C5CDDA;
  --night:#0B1B36;
  --night-text:#DCE4F2;
  --night-muted:#B8C4DA;
  --night-rule:#22375C;
  --night-chip:#1C3767;
  --sky:#8FB0FF;
  --focus:#F2B84B;
  --ok:#1F9D57;              /* "live" status dots only */

  --font:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-ar:'IBM Plex Sans Arabic','Plus Jakarta Sans',system-ui,sans-serif;

  --wrap:1200px;
  --gutter:clamp(20px,5vw,40px);
  --band:1344px;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:#fff;color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
img{display:block;max-width:100%;height:auto}
a{color:var(--accent)}
a:hover{color:var(--accent-hover)}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
h1,h2,h3,p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit}
[id]{scroll-margin-top:96px}

.wrap{max-width:calc(var(--wrap) + 2 * var(--gutter));margin-inline:auto;padding-inline:var(--gutter)}
.skip{position:absolute;inset-inline-start:12px;top:-60px;z-index:100;padding:10px 16px;border-radius:10px;background:var(--ink);color:#fff;font-weight:700;text-decoration:none}
.skip:focus{top:12px;color:#fff}

/* ---------- type ---------- */
.h1{overflow-wrap:break-word;font-weight:800;font-size:clamp(2.5rem,1.25rem + 4.2vw,4.5rem);line-height:1.03;letter-spacing:-.04em}
.h2{overflow-wrap:break-word;font-weight:800;font-size:clamp(2rem,1.2rem + 2.5vw,3.25rem);line-height:1.07;letter-spacing:-.035em}
.h2-sm{font-size:clamp(1.9rem,1.2rem + 2vw,2.75rem);line-height:1.08}
.lead{font-size:clamp(1.0625rem,1rem + .35vw,1.25rem);line-height:1.6;color:var(--muted)}
.muted{color:var(--muted)}
.small{font-size:15px;color:var(--muted)}
.eyebrow{font-size:15px;font-weight:600;color:var(--accent)}
.sec{padding-block:clamp(80px,9vw,136px)}
.sec-head{display:flex;flex-direction:column;gap:16px;max-width:720px;margin-bottom:clamp(36px,4vw,56px)}
.sec-head .lead{max-width:640px}

/* ---------- logo B : the word alone, square dots ---------- */
.wordmark{display:inline-flex;font-family:var(--font);font-weight:800;letter-spacing:-.045em;line-height:1;color:var(--ink);direction:ltr;unicode-bidi:isolate}
.wordmark .i{position:relative;display:inline-block}
/* The dot is centred on the stem's ink, not on the box: in Plus Jakarta Sans 800
   the dotless-i stem runs from .04em to .20em (centre .12em), while left:50% of a box
   narrowed by the -.045em tracking lands at .097em, visibly off. If the font changes,
   re-measure: ctx.measureText('ı') actualBoundingBoxLeft/Right. */
.wordmark .i::after{content:"";position:absolute;left:.12em;top:.06em;width:.17em;height:.17em;margin-left:-.085em;border-radius:.03em;background:var(--accent)}
.wordmark.on-dark{color:#fff}
.wordmark.on-dark .i::after{background:var(--sky)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:16px 26px;border:0;border-radius:12px;font-weight:700;font-size:17px;line-height:1.2;text-decoration:none;text-align:center;cursor:pointer;transition:background-color .15s,color .15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);color:#fff}
.btn-soft{background:var(--soft-2);color:var(--ink);font-weight:600}
.btn-soft:hover{background:var(--tint);color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff;font-weight:600;font-size:15px;min-height:44px;padding:12px 22px;border-radius:10px}
.btn-dark:hover{background:#1D2A40;color:#fff}
.btn-white{background:#fff;color:var(--night)}
.btn-white:hover{background:var(--soft-2);color:var(--night)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.link-strong{font-weight:700;font-size:16px;text-decoration:none}
.link-strong:hover{text-decoration:underline}

/* ---------- navigation ---------- */
.navbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);-webkit-backdrop-filter:saturate(1.4) blur(12px);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s}
.navbar.scrolled{border-bottom-color:var(--line)}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.navbar{background:#fff}}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:84px}
.brand{display:inline-flex;align-items:center;text-decoration:none;padding-block:8px}
.brand .wordmark{font-size:30px}
.nav-links{display:flex;align-items:center;gap:clamp(22px,2.4vw,40px);font-size:16px;font-weight:500}
.nav-links a{color:var(--ink);text-decoration:none;padding-block:10px;white-space:nowrap}
.nav-end .btn{white-space:nowrap}
.nav-links a:hover{color:var(--accent)}
.nav-end{display:flex;align-items:center;gap:14px}

.lang{display:inline-flex;gap:2px;padding:4px;background:var(--soft);border-radius:10px}
.lang button{min-width:38px;padding:8px 10px;border:0;border-radius:7px;background:transparent;color:var(--muted);font-size:13px;font-weight:700;line-height:1;cursor:pointer}
.lang button:hover{color:var(--ink)}
.lang button.active{background:var(--ink);color:#fff}
.lang button[data-lang="ar"]{font-family:var(--font-ar);font-size:15px}

/* burger + bottom sheet (sheet sits at body level: backdrop-filter on the
   navbar would otherwise become the containing block for position:fixed) */
.burger{display:none;width:44px;height:44px;border:0;border-radius:10px;background:var(--soft);color:var(--ink);cursor:pointer;align-items:center;justify-content:center;flex-shrink:0}
.burger i{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:currentColor;transition:background .2s}
.burger i::before,.burger i::after{content:"";position:absolute;inset-inline-start:0;width:18px;height:2px;border-radius:2px;background:currentColor;transition:transform .25s,top .25s}
.burger i::before{top:-6px}
.burger i::after{top:6px}
.burger[aria-expanded="true"] i{background:transparent}
.burger[aria-expanded="true"] i::before{top:0;transform:rotate(45deg)}
.burger[aria-expanded="true"] i::after{top:0;transform:rotate(-45deg)}
.m-scrim{position:fixed;inset:0;z-index:60;background:rgba(14,23,38,.45);opacity:0;pointer-events:none;transition:opacity .25s}
.m-scrim.open{opacity:1;pointer-events:auto}
.m-menu{display:none;position:fixed;inset-inline:0;bottom:0;z-index:70;max-height:88vh;overflow-y:auto;padding:12px 20px calc(22px + env(safe-area-inset-bottom));background:#fff;border-radius:22px 22px 0 0;box-shadow:0 -16px 48px rgba(14,23,38,.18);transform:translateY(110%);visibility:hidden;transition:transform .3s cubic-bezier(.32,.72,0,1),visibility .3s}
.m-menu.open{transform:none;visibility:visible}
.m-menu::before{content:"";display:block;width:40px;height:4px;margin:0 auto 10px;border-radius:99px;background:var(--line)}
.m-menu > a:not(.btn){display:block;padding:15px 4px;border-bottom:1px solid var(--line);color:var(--ink);font-size:17px;font-weight:600;text-decoration:none}
.m-menu .lang{display:flex;width:max-content;margin:18px auto 0}
.m-menu .lang button{min-width:52px;padding:13px 16px;font-size:15px}
.m-menu .lang button[data-lang="ar"]{font-size:17px}
.m-menu .btn{width:100%;margin-top:16px}
@media (max-width:959px){
  .burger{display:inline-flex}
  .nav-links,.nav-end{display:none}
  .m-menu{display:block}
  .nav{min-height:72px}
  .brand .wordmark{font-size:27px}
}

/* ---------- shared components ---------- */
.check{flex-shrink:0;margin-top:3px}
.ticks{display:flex;flex-direction:column;gap:12px}
.ticks li{display:flex;gap:10px;font-size:16px;line-height:1.45}

.card-soft{display:flex;flex-direction:column;gap:18px;padding:clamp(28px,3vw,40px) clamp(24px,2.6vw,36px);background:var(--soft);border-radius:22px}
.icon-tile{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:14px;background:var(--accent);color:#fff;flex-shrink:0}
.card-soft h3{margin-top:8px;font-weight:700;font-size:clamp(1.375rem,1.1rem + .6vw,1.625rem);letter-spacing:-.02em;line-height:1.2}
.card-soft > p{font-size:17px;line-height:1.6;color:var(--muted)}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:959px){.grid-3{grid-template-columns:minmax(0,1fr);max-width:640px}}

/* screenshot panel with the hover zoom */
.shot{position:relative;overflow:hidden;border-radius:20px;background:var(--soft);aspect-ratio:16/10}
.shot img{width:100%;height:100%;object-fit:cover;object-position:top center;transition:transform .6s ease}
.shot-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--muted);font-size:15px;font-weight:600;text-align:center;padding:24px}
article:hover .shot img{transform:scale(1.035)}

/* feature rows: media beside copy; add .flip to swap sides (RTL mirrors on its own) */
.feature{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(32px,3.9vw,56px);align-items:center}
.feature + .feature{margin-top:clamp(64px,7vw,104px)}
.feature-media{grid-column:span 7}
.feature-media .shot{border-radius:24px}
.feature-copy{grid-column:span 5;display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.feature.flip .feature-media{order:2}
.feature-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}
.feature-copy h3{font-weight:800;font-size:clamp(2rem,1.4rem + 1.4vw,2.5rem);letter-spacing:-.03em;line-height:1.1}
.feature-copy > p{font-size:18px;line-height:1.6;color:var(--muted)}
.feature-copy .ticks{margin-block:2px 8px}
.feature-copy .ticks .check{color:var(--accent)}
@media (max-width:959px){
  .feature{grid-template-columns:minmax(0,1fr)}
  .feature-media,.feature-copy{grid-column:auto}
  .feature.flip .feature-media{order:0}
}
.status{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--soft);color:var(--ink);font-size:13px;font-weight:700}
.status i{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.status.live i{background:var(--ok);box-shadow:0 0 0 3px rgba(31,157,87,.18)}

/* dark band */
.band{max-width:var(--band);margin-inline:clamp(12px,3.3vw,48px);border-radius:clamp(22px,2.4vw,32px)}
@media (min-width:1441px){.band{margin-inline:auto}}
.band-night{background:var(--night);color:var(--night-text)}
.band-night .h2{color:#fff}
.band-soft{background:var(--soft)}
.band-inner{padding:clamp(56px,7vw,104px) clamp(24px,5vw,72px)}

/* centred closing call-to-action inside a dark band */
.final{display:flex;flex-direction:column;align-items:center;gap:22px;text-align:center}
.final p{max-width:54ch;font-size:clamp(1.0625rem,1rem + .3vw,1.1875rem);line-height:1.6;color:var(--night-muted)}
.final .meta{font-size:15px}
.band-night a:not(.btn){color:#fff}

/* numbered steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(28px,3vw,40px)}
.steps li{display:flex;flex-direction:column;gap:14px}
.step-n{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:999px;background:var(--tint);color:var(--accent-hover);font-weight:800;font-size:20px}
.step-t{margin-top:6px;font-weight:700;font-size:20px}
.step-b{font-size:16px;line-height:1.6;color:var(--muted)}
@media (max-width:959px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:559px){.steps{grid-template-columns:minmax(0,1fr)}}

/* FAQ, always open */
.faq{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:48px;border-top:1px solid var(--line)}
.faq > .h2{grid-column:span 4}
.faq dl{grid-column:span 8}
.faq dl > div{display:flex;flex-direction:column;gap:10px;padding:26px 0;border-bottom:1px solid var(--line)}
.faq dt{font-weight:700;font-size:19px;line-height:1.4}
.faq dd{font-size:16px;line-height:1.65;color:var(--muted)}
.faq dl > div:first-child{padding-top:0}
@media (max-width:959px){.faq{grid-template-columns:minmax(0,1fr);gap:28px}.faq > .h2,.faq dl{grid-column:auto}}

/* footer */
.footer{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:40px;padding-block:clamp(64px,7vw,88px) 56px}
.footer-brand{display:flex;flex-direction:column;gap:10px}
.footer-brand .wordmark{font-size:26px}
.footer nav{display:flex;flex-wrap:wrap;gap:14px 40px;font-size:15px}
.footer nav a{color:var(--ink);text-decoration:none}
.footer nav a:hover{color:var(--accent)}

/* ---------- RTL / Arabic ---------- */
body.rtl{font-family:var(--font-ar)}
body.rtl .h1,body.rtl .h2,body.rtl h3,body.rtl .step-t,body.rtl .faq dt{letter-spacing:0;line-height:1.35}
body.rtl .h1{line-height:1.25}
body.rtl .wordmark{font-family:var(--font);letter-spacing:-.045em}
body.rtl .ltr{direction:ltr;unicode-bidi:isolate}
/* mirror a directional icon (arrows, chevrons) in Arabic. Deliberately not called
   .flip: .feature.flip is a layout modifier, and mirroring a whole row reverses its text */
body.rtl .rtl-mirror{transform:scaleX(-1)}

/* ---------- motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}