/* ═══ TOKENS — shared public design system (light default + dark toggle) ═══ */
:root{
  --brand:#4f46e5; --brand-2:#7c3aed; --brand-soft:rgba(79,70,229,.08); --brand-line:rgba(79,70,229,.22);
  --paper:#f3f3f1; --surface:#ffffff; --surface-2:#f7f7f5; --raise:#ffffff;
  --ink:#12141b; --text:#33363f; --muted:#5a5f6b; --subtle:#8a8f9c;
  --line:#e3e2df; --line-2:#ecebe8; --hair:rgba(18,20,27,.06);
  --green:#12905a; --green-text:#0f7a4c; --green-soft:rgba(18,144,90,.1); --amber:#b7791f; --fb:#1877F2; --fb-msg:#1360c9; --wa:#25D366;
  --shadow-sm:0 1px 2px rgba(18,20,27,.04),0 2px 8px rgba(18,20,27,.05);
  --shadow-md:0 4px 12px rgba(18,20,27,.06),0 14px 40px rgba(18,20,27,.09);
  --shadow-lg:0 24px 70px rgba(18,20,27,.16);
  --code:#f0f0ed;
  /* ── legacy aliases: base.css/content.css/auth.css token names map onto the new system ── */
  --bg:var(--paper); --card:var(--surface); --border:var(--line); --border-h:var(--brand-line);
  --indigo:var(--brand); --indigo-d:var(--brand-2); --violet:var(--brand-2);
  --t1:var(--ink); --t2:var(--muted); --t3:var(--subtle);
  --r-sm:6px; --r-md:10px; --r-lg:14px; --r-xl:18px; --r-2xl:26px; --r-full:9999px;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --brand:#818cf8; --brand-2:#a78bfa; --brand-soft:rgba(129,140,248,.12); --brand-line:rgba(129,140,248,.28);
  --paper:#080a10; --surface:#111420; --surface-2:#0d101a; --raise:#161a28;
  --ink:#f3f5fb; --text:#c6cbd8; --muted:#8b91a3; --subtle:#666d80;
  --line:rgba(255,255,255,.09); --line-2:rgba(255,255,255,.06); --hair:rgba(255,255,255,.06);
  --green:#34d399; --green-text:#34d399; --green-soft:rgba(52,211,153,.12); --amber:#f0b657; --fb:#3b82f6; --fb-msg:#2563eb; --wa:#25D366;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow-md:0 10px 30px rgba(0,0,0,.5);
  --shadow-lg:0 30px 80px rgba(0,0,0,.6);
  --code:#0b0e17;
  color-scheme:dark;
}

/* ═══ TOKENS ═══ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Hanken Grotesk',-apple-system,system-ui,sans-serif;background:var(--paper);color:var(--text);line-height:1.6;margin:0;-webkit-font-smoothing:antialiased;transition:background .4s,color .4s}
a{text-decoration:none;color:var(--brand)}
a:hover{color:var(--brand-2)}
p{margin:0}
:lang(bn),.bn{font-family:'Noto Sans Bengali','Hanken Grotesk',sans-serif}
::selection{background:var(--brand);color:#fff}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.serif{font-family:'Instrument Serif',Georgia,serif;font-style:italic;font-weight:400}

/* ═══ TYPE ═══ */
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:9px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted)}
.kicker::before{content:"";width:18px;height:1px;background:var(--brand)}
.h-xl{font-size:clamp(2.5rem,5.4vw,4.2rem);font-weight:800;letter-spacing:-.03em;line-height:1.03;color:var(--ink)}
.h-lg{font-size:clamp(2rem,3.8vw,3.05rem);font-weight:800;letter-spacing:-.028em;line-height:1.06;color:var(--ink)}
.h-md{font-size:clamp(1.4rem,2vw,1.7rem);font-weight:700;letter-spacing:-.02em;line-height:1.15;color:var(--ink)}
.lead{font-size:1.12rem;color:var(--muted);line-height:1.65;max-width:46ch}
.tiny{font-size:.92rem;color:var(--subtle);line-height:1.6}


/* ═══ BUTTONS ═══ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:inherit;font-weight:700;font-size:.95rem;border-radius:11px;border:1px solid transparent;cursor:pointer;transition:all .18s;white-space:nowrap;padding:13px 22px;letter-spacing:-.01em}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 6px 20px rgba(79,70,229,.28)}
.btn-brand:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(79,70,229,.4);color:#fff}
:root[data-theme="dark"] .btn-brand{color:#0a0c14}
.btn-line{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:var(--ink);transform:translateY(-2px);color:var(--ink)}
.btn-ghost{background:transparent;color:var(--text)}
.btn-ghost:hover{color:var(--ink)}
.btn-wa{background:var(--wa);color:#fff;border-color:transparent}
.btn-wa:hover{transform:translateY(-2px);color:#fff;box-shadow:0 8px 22px rgba(37,211,102,.35)}
.btn-sm{padding:9px 15px;font-size:.87rem;border-radius:9px}
.btn svg{flex:none}


/* ═══ NAV ═══ */
nav{position:sticky;top:0;z-index:200;background:color-mix(in srgb,var(--paper) 82%,transparent);backdrop-filter:blur(18px) saturate(150%);border-bottom:1px solid var(--hair)}
.nav-in{max-width:1200px;margin:0 auto;padding:0 32px;height:66px;display:flex;align-items:center;gap:14px}
.brand{position:relative;display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.12rem;color:var(--ink);letter-spacing:-.02em}
.brand img{width:30px;height:30px;border-radius:9px;display:block}
.brand .beta{font-size:8.5px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;color:var(--muted);align-self:flex-start;margin-top:1px;margin-left:-4px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:30px;list-style:none;padding:0}
.nav-links a{padding:7px 13px;border-radius:8px;font-size:.9rem;font-weight:500;color:var(--muted);transition:.14s}
.nav-links a:hover{color:var(--ink);background:var(--hair)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.icon-btn{width:38px;height:38px;border-radius:9px;border:1px solid var(--line);background:var(--surface);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--muted);transition:.16s;flex:none}
.icon-btn:hover{color:var(--ink);border-color:var(--ink)}
.wa-nav{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 13px;font-size:.87rem;font-weight:600;color:var(--text);text-decoration:none}
.wa-nav svg{width:17px;height:17px}
.theme-ic-dark{display:none}
:root[data-theme="dark"] .theme-ic-light{display:none}
:root[data-theme="dark"] .theme-ic-dark{display:block}
.nav-ham{display:none;flex-direction:column;gap:5px;width:38px;height:38px;border:1px solid var(--line);border-radius:9px;background:var(--surface);cursor:pointer;align-items:center;justify-content:center}
.nav-ham span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-ham.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-ham.open span:nth-child(2){opacity:0}
.nav-ham.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{display:none;position:fixed;top:66px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:16px 24px 22px;z-index:199;flex-direction:column;gap:4px}
.drawer.open{display:flex}
.drawer a{padding:12px 14px;border-radius:10px;font-weight:600;color:var(--text)}
.drawer a:hover{background:var(--hair)}
.drawer .btn{width:100%;margin-top:6px}
@media(max-width:940px){.nav-links,.nav-right .desk{display:none}.nav-ham{display:flex}}


/* ═══ SECTION SHELL ═══ */
section{position:relative}
.band{padding:100px 0}
.band-alt{background:var(--surface-2)}
.s-head{max-width:680px;margin-bottom:52px}
.s-head.center{margin-left:auto;margin-right:auto;text-align:center}
.s-head .kicker{margin-bottom:16px}
.s-head .lead{margin-top:18px}
.s-head.center .lead{margin-left:auto;margin-right:auto}


/* ═══ FOOTER ═══ */
footer{padding:64px 0 34px;border-top:1px solid var(--line)}
.foot-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;color:var(--ink);margin-bottom:14px}
.foot-brand img{width:28px;height:28px;border-radius:8px}
.foot-desc{font-size:.88rem;color:var(--muted);line-height:1.7;max-width:280px}
.foot-col h3{font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--subtle);margin:0 0 14px}
.foot-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:.89rem;color:var(--muted);transition:.14s}
.foot-col a:hover{color:var(--brand)}
.foot-bot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;padding-top:24px;font-size:.82rem;color:var(--subtle)}
.foot-bot a{color:var(--subtle)}.foot-bot a:hover{color:var(--brand)}
@media(max-width:760px){.foot-top{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:460px){.foot-top{grid-template-columns:1fr}}


/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s cubic-bezier(.2,.7,.3,1),transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ═══ LEGACY BRIDGE — classes used by content/legal/error/auth pages ═══ */
/* eyebrow + display (blog/help/error pages) */
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 13px;border-radius:999px;background:var(--brand-soft);border:1px solid var(--brand-line);font-size:11px;font-weight:700;letter-spacing:.9px;text-transform:uppercase;color:var(--brand)}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
.display{font-size:clamp(2rem,3.8vw,3.05rem);font-weight:800;letter-spacing:-.028em;line-height:1.06;color:var(--ink)}
.display .hi{background:linear-gradient(130deg,var(--brand),var(--brand-2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
/* legacy button variants (error pages, older CTAs) */
.btn-indigo{background:var(--brand);color:#fff;box-shadow:0 6px 20px rgba(79,70,229,.28)}
.btn-indigo:hover{background:var(--brand-2);transform:translateY(-2px);color:#fff;box-shadow:0 10px 30px rgba(79,70,229,.4)}
:root[data-theme="dark"] .btn-indigo{color:#0a0c14}
.btn-fb{background:var(--fb);color:#fff}
.btn-fb:hover{transform:translateY(-2px);color:#fff}
.btn-xl{padding:14px 26px;font-size:1rem;border-radius:12px}
.btn-lg{padding:12px 22px;font-size:.95rem}
/* drawer theme toggle (shared navbar) */
.drawer-theme{display:flex;align-items:center;justify-content:flex-start;gap:10px;width:100%;padding:12px 14px;border-radius:10px;border:0;background:none;font-family:inherit;font-weight:600;font-size:1rem;color:var(--text);cursor:pointer;text-align:left}
.drawer-theme:hover{background:var(--hair)}
.drawer-theme .dt-ic{display:flex;align-items:center;color:var(--muted)}
.drawer-theme .dt-ic svg{width:20px;height:20px}
.drawer-theme .theme-ic-dark{display:none}
:root[data-theme="dark"] .drawer-theme .theme-ic-light{display:none}
:root[data-theme="dark"] .drawer-theme .theme-ic-dark{display:block}

/* ═══ LEGAL PAGES (.legal-page / privacy / data-deletion) ═══ */
.legal-page{max-width:820px;margin:0 auto;padding:72px 32px 96px;color:var(--text);line-height:1.8}
.legal-page h1{font-size:clamp(2rem,4vw,2.75rem);font-weight:800;letter-spacing:-.025em;color:var(--ink);margin:0 0 8px}
.legal-meta{display:inline-block;color:var(--subtle);font-size:.9rem;margin-bottom:32px}
.legal-page h2{font-size:1.4rem;font-weight:700;color:var(--ink);margin:2em 0 .5em;letter-spacing:-.01em}
.legal-page h3{font-size:1.1rem;font-weight:700;color:var(--ink);margin:1.6em 0 .4em}
.legal-page p{margin:0 0 1em}
.legal-page ul,.legal-page ol{margin:0 0 1.2em 1.4em}
.legal-page li{margin-bottom:.5em}
.legal-page a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.legal-page a:hover{color:var(--brand-2)}
.legal-callout{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:1.4em 0;box-shadow:var(--shadow-sm)}
.legal-callout p{margin:0}

/* ═══ ERROR PAGES (.error-page …) ═══ */
.error-page{min-height:calc(100vh - 66px);display:flex;align-items:center;padding:64px 32px}
.error-shell{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;width:100%}
.error-copy{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.error-code{font-size:clamp(4rem,10vw,7rem);font-weight:800;letter-spacing:-.04em;line-height:1;color:var(--brand)}
.error-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;letter-spacing:-.02em;color:var(--ink);margin:0}
.error-text{font-size:1.05rem;color:var(--muted);max-width:46ch;line-height:1.6}
.error-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.error-card{position:relative;aspect-ratio:4/3;background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-lg);overflow:hidden;display:flex;flex-direction:column}
.error-card-bar{display:flex;gap:6px;padding:16px}
.error-card-bar span{width:10px;height:10px;border-radius:50%;background:var(--line-2)}
.error-orbit{flex:1;margin:8px 24px;border-radius:16px;background:radial-gradient(60% 60% at 50% 40%,var(--brand-soft),transparent 70%)}
.error-card-note{padding:16px 24px 24px;font-size:.85rem;color:var(--subtle)}
@media(max-width:820px){.error-shell{grid-template-columns:1fr;gap:32px}.error-card{display:none}}

/* content.css inline-code chips read better on light with a token bg */
.article-body.richtext code,.help-article-body.richtext code{background:var(--surface-2)!important}