/* ─── TeleBirr InApp SDK Integration Docs — black & white ─── */
:root{
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*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--tb-surface);color:var(--tb-ink);font-family:var(--tb-sans);-webkit-font-smoothing:antialiased;line-height:1.6;overflow-x:hidden}
h1,h2,h3,h4,p{overflow-wrap:break-word}
a{color:inherit;text-decoration:none}code,pre{font-family:var(--tb-mono)}
code{overflow-wrap:anywhere}
::selection{background:var(--tb-ink);color:#fff}

/* Skip link */
.skip-link{position:fixed;left:12px;top:8px;z-index:100;transform:translateY(-150%);padding:10px 14px;border-radius:8px;background:var(--tb-ink);color:#fff;font-weight:600;font-size:13px}.skip-link:focus{transform:translateY(0)}

/* ─── Top bar ─── */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;min-height:68px;padding:0 34px;border-bottom:1px solid var(--tb-line);background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px}.brand-icon{display:grid;width:36px;height:36px;place-items:center;border-radius:10px;background:var(--tb-ink);color:#fff;font-size:16px}.brand-text{color:var(--tb-ink)}.brand-text span{color:var(--tb-muted)}
.topnav{display:flex;align-items:center;gap:22px;font-size:13px;font-weight:600}.topnav a{display:inline-flex;align-items:center;gap:6px;color:var(--tb-muted);transition:color .18s}.topnav a:hover{color:var(--tb-ink)}.topnav a i{font-size:11px}
.topnav .topnav-cta{padding:9px 16px;border-radius:9px;background:var(--tb-ink);color:#fff;transition:transform .15s,opacity .15s}.topnav .topnav-cta:hover{opacity:.85;transform:translateY(-1px)}
.mobile-menu{display:none;width:40px;height:40px;place-items:center;border:1px solid var(--tb-line);border-radius:10px;background:#fff;color:var(--tb-ink);font-size:15px;cursor:pointer}.mobile-menu:active{transform:translateY(1px)}

/* ─── Layout ─── */
.layout{display:grid;grid-template-columns:244px minmax(0,1fr);max-width:1480px;margin:0 auto}
.sidebar{position:sticky;top:68px;height:calc(100dvh - 68px);overflow-y:auto;scrollbar-width:thin;padding:40px 24px;border-right:1px solid var(--tb-line)}
.sidebar-label{margin:0 0 14px 10px;color:var(--tb-muted);font-size:10px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.sidebar>a{display:block;margin:2px 0;padding:9px 12px;border-radius:9px;color:var(--tb-muted);font-size:13px;font-weight:500;transition:.18s ease}.sidebar>a:hover{background:var(--tb-paper);color:var(--tb-ink)}.sidebar>a.is-active{background:var(--tb-ink);color:#fff;font-weight:700}
.sidebar-badge{display:flex;align-items:center;gap:9px;margin-top:30px;padding:14px 10px;border-top:1px solid var(--tb-line);color:var(--tb-muted);font-size:11px;line-height:1.5}.sidebar-badge i{font-size:16px;color:var(--tb-ink)}
.sidebar-version{display:inline-flex;align-items:center;gap:6px;margin-top:18px;padding:7px 12px;border-radius:8px;border:1px solid var(--tb-line);color:var(--tb-ink);font:600 11px var(--tb-mono)}.sidebar-version i{font-size:10px}
.sidebar-download{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:14px;padding:11px 12px;border-radius:9px;background:var(--tb-ink);color:#fff;font-size:12px;font-weight:700;transition:transform .15s,opacity .15s}.sidebar-download:hover{opacity:.85;transform:translateY(-1px)}.sidebar-download i{font-size:12px}

/* ─── Main content ─── */
.docs{width:min(100%,1080px);padding:0 60px 100px}

/* ─── Hero ─── */
.hero{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:64px;min-height:560px;padding:72px 0 78px;border-bottom:1px solid var(--tb-line)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;padding:7px 14px;border-radius:40px;background:var(--tb-paper);border:1px solid var(--tb-line);color:var(--tb-ink);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.eyebrow i{font-size:10px}
h1{margin:0;font-size:clamp(2.6rem,4.5vw,4.8rem);letter-spacing:-.055em;line-height:.98;text-wrap:balance}h1 span{position:relative;text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:6px}
.hero-lead{max-width:540px;margin:22px 0 0;color:var(--tb-muted);font-size:17px;line-height:1.7}
.hero-actions{display:flex;gap:10px;margin-top:32px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;border:1px solid transparent;border-radius:11px;font-weight:700;font-size:14px;transition:transform .15s ease,background .15s ease,box-shadow .15s ease;white-space:nowrap;cursor:pointer}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--tb-ink);color:#fff;box-shadow:0 6px 22px rgba(10,10,10,.18)}.btn-primary:hover{box-shadow:0 10px 30px rgba(10,10,10,.26)}
.btn-outline{border-color:var(--tb-line);background:#fff;color:var(--tb-ink)}.btn-outline:hover{border-color:var(--tb-ink)}
.btn i{font-size:12px}

/* Hero visual: Integration flow */
.hero-flow{padding:24px;border:1px solid var(--tb-line);border-radius:var(--tb-radius);background:var(--tb-paper);box-shadow:var(--tb-shadow-lg)}
.flow-node{display:flex;align-items:center;gap:14px;padding:16px;border-radius:12px;background:#fff;border:1px solid var(--tb-line);transition:transform .2s}.flow-node:hover{transform:translateX(4px)}
.flow-node strong,.flow-node small{display:block}.flow-node strong{font-size:13px}.flow-node small{margin-top:3px;color:var(--tb-muted);font-size:11px}
.flow-logo{display:grid;width:44px;height:44px;flex:0 0 44px;place-items:center;border-radius:11px;color:#fff;font-size:16px;background:var(--tb-ink)}
.flow-arrow{display:flex;align-items:center;justify-content:center;height:32px;color:var(--tb-muted);font-size:13px;font-weight:700;letter-spacing:.1em;transform:rotate(90deg) translateX(2px)}
.flow-arrow i{animation:flowPulse 2s ease-in-out infinite}
@keyframes flowPulse{0%,100%{opacity:1;transform:translateX(0)}50%{opacity:.5;transform:translateX(3px)}}

/* ─── Sections ─── */
.section{scroll-margin-top:88px;padding:76px 0;border-bottom:1px solid var(--tb-line)}
.section-header{max-width:660px;margin-bottom:40px}
.section-kicker{display:inline-flex;align-items:center;gap:6px;margin:0 0 14px;color:var(--tb-ink);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.section-kicker i{font-size:12px}
h2{margin:0;font-size:clamp(1.8rem,3.2vw,2.8rem);letter-spacing:-.04em;line-height:1.1;text-wrap:balance}
.section-header>p:last-child{margin:16px 0 0;color:var(--tb-muted);font-size:16px;line-height:1.7}

/* ─── Step cards ─── */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.step-card{position:relative;padding:28px 22px;border:1px solid var(--tb-line);border-radius:var(--tb-radius);background:#fff;transition:transform .2s,box-shadow .2s}.step-card:hover{transform:translateY(-4px);box-shadow:var(--tb-shadow-md)}
.step-num{display:inline-grid;width:32px;height:26px;place-items:center;margin-bottom:18px;border-radius:7px;background:var(--tb-ink);color:#fff;font:700 11px var(--tb-mono)}
.step-card h3{margin:0 0 8px;font-size:16px}.step-card p{margin:0;color:var(--tb-muted);font-size:13px;line-height:1.6}

/* ─── Credential cards ─── */
.creds-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.cred-card{display:flex;gap:14px;padding:20px;border:1px solid var(--tb-line);border-radius:12px;background:#fff;transition:transform .2s}.cred-card:hover{transform:translateY(-2px)}
.cred-icon{display:grid;width:42px;height:42px;flex:0 0 42px;place-items:center;border-radius:10px;font-size:15px;background:var(--tb-paper);color:var(--tb-ink);border:1px solid var(--tb-line)}
.cred-card h4{margin:0 0 4px;font-size:14px}.cred-card p{margin:0;color:var(--tb-muted);font-size:12px;line-height:1.5}

/* ─── API Reference blocks ─── */
.api-block{margin-top:36px;border:1px solid var(--tb-line);border-radius:var(--tb-radius);overflow:hidden;box-shadow:var(--tb-shadow-sm)}
.api-endpoint{display:flex;align-items:center;gap:0;padding:0;background:var(--tb-paper);border-bottom:1px solid var(--tb-line)}
.api-method{display:grid;place-items:center;padding:14px 18px;background:var(--tb-ink);color:#fff;font:700 12px var(--tb-mono);border-right:1px solid var(--tb-line)}
.api-url{flex:1;padding:14px 18px;overflow-x:auto;font:500 13px var(--tb-mono);color:var(--tb-ink);white-space:nowrap}
.api-step-label{padding:2px 10px;margin-right:14px;border-radius:6px;border:1px solid var(--tb-line);color:var(--tb-ink);font:700 10px var(--tb-mono);white-space:nowrap}
.api-body{display:grid;grid-template-columns:1fr 1fr;gap:0}
.api-params{padding:28px 24px;border-right:1px solid var(--tb-line)}
.api-params h4{margin:0 0 16px;font-size:14px;color:var(--tb-ink)}
.param-row{display:grid;grid-template-columns:140px 1fr;gap:10px;padding:10px 0;border-bottom:1px solid var(--tb-line);font-size:13px}.param-row:last-child{border-bottom:0}
.param-name{font-weight:600;color:var(--tb-ink)}.param-name code{color:var(--tb-ink);font-size:12px;font-weight:700}
.param-desc{color:var(--tb-muted);font-size:12px;line-height:1.5}
.param-tag{display:inline-block;margin-left:6px;padding:2px 6px;border-radius:4px;font-size:9px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.param-required{background:var(--tb-ink);color:#fff}.param-optional{border:1px solid var(--tb-line);color:var(--tb-muted)}
.api-example{padding:0;background:var(--tb-code);color:#e5e5e5;overflow:hidden}
.api-example-head{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-bottom:1px solid rgba(255,255,255,.1);color:#9a9a9a;font:500 11px var(--tb-mono)}
.api-example pre{margin:0;padding:22px 24px;overflow-x:auto;font:13px/1.8 var(--tb-mono);color:#e5e5e5;white-space:pre}
.copy-btn{padding:5px 10px;border:1px solid rgba(255,255,255,.16);border-radius:6px;background:rgba(255,255,255,.06);color:#fff;font:600 11px var(--tb-sans);cursor:pointer;transition:background .15s}.copy-btn:hover{background:rgba(255,255,255,.14)}

/* Full-width code blocks for single-column API sections */
.api-body.api-body-full{grid-template-columns:minmax(0,1fr)}
.api-body-full .api-params{border-right:0}

/* ─── Platform SDK cards ─── */
.platform-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.platform-card{border:1px solid var(--tb-line);border-radius:var(--tb-radius);overflow:hidden;background:#fff;box-shadow:var(--tb-shadow-sm);transition:transform .2s,box-shadow .2s}.platform-card:hover{transform:translateY(-4px);box-shadow:var(--tb-shadow-md)}
.platform-header{display:flex;align-items:center;gap:14px;padding:24px;border-bottom:1px solid var(--tb-line)}
.platform-logo{display:grid;width:48px;height:48px;place-items:center;border-radius:12px;color:#fff;font-size:20px;background:var(--tb-ink)}
.platform-header div h3{margin:0;font-size:17px}.platform-header div p{margin:3px 0 0;color:var(--tb-muted);font-size:12px}
.platform-body{padding:24px}
.platform-body h4{margin:0 0 12px;font-size:13px;color:var(--tb-muted);font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.platform-body ul{margin:0 0 20px;padding:0 0 0 18px;color:var(--tb-muted);font-size:13px;line-height:2}
.platform-body ul li::marker{color:var(--tb-ink)}
.platform-code{margin:0;overflow:hidden;border-radius:10px;background:var(--tb-code)}
.platform-code pre{margin:0;padding:18px 20px;overflow-x:auto;font:12px/1.7 var(--tb-mono);color:#e5e5e5;white-space:pre}

/* ─── Verified vs unverified badges ─── */
.verify-badge{display:inline-flex;align-items:center;gap:6px;margin-left:10px;padding:3px 9px;border-radius:999px;font:700 10px var(--tb-sans);letter-spacing:.03em;text-transform:uppercase;vertical-align:middle}
.verify-badge.is-verified{background:var(--tb-ink);color:#fff}
.verify-badge.is-unverified{border:1px solid var(--tb-line);color:var(--tb-muted)}
.verify-badge i{font-size:9px}

/* ─── Field notes (real-world gotchas) ─── */
.notes-list{display:flex;flex-direction:column;gap:14px}
.note-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;padding:22px 24px;border:1px solid var(--tb-line);border-radius:12px;background:#fff;transition:transform .2s}.note-card:hover{transform:translateX(4px)}
.note-icon{display:grid;width:38px;height:38px;place-items:center;border-radius:10px;background:var(--tb-ink);color:#fff;font-size:15px;flex-shrink:0}
.note-card h4{margin:0 0 6px;font-size:15px;display:flex;align-items:center;flex-wrap:wrap;gap:0}
.note-card p{margin:0;color:var(--tb-muted);font-size:13px;line-height:1.7}
.note-card code{color:var(--tb-ink);font-weight:600}
.note-wrong,.note-right{display:flex;flex-wrap:wrap;align-items:center;gap:5px;font-size:12px;font-family:var(--tb-mono);overflow-wrap:anywhere}
.note-wrong{margin:8px 0 2px;color:var(--tb-muted)}
.note-wrong i{color:var(--tb-ink)}
.note-right{margin:2px 0 8px;color:var(--tb-ink);font-weight:600}
.note-right i{color:var(--tb-ink)}

/* ─── Error codes ─── */
.error-table-wrap{overflow-x:auto;border:1px solid var(--tb-line);border-radius:var(--tb-radius)}
table{width:100%;border-collapse:collapse;font-size:14px}
th{padding:14px 18px;border-bottom:2px solid var(--tb-line);background:var(--tb-paper);color:var(--tb-muted);font-size:11px;font-weight:700;letter-spacing:.08em;text-align:left;text-transform:uppercase}
td{padding:16px 18px;border-bottom:1px solid var(--tb-line);vertical-align:top;line-height:1.5}
td code{padding:3px 7px;border-radius:5px;background:var(--tb-paper);color:var(--tb-ink);font-size:12px;font-weight:600}
.status-success{color:var(--tb-ink);font-weight:700}.status-error{color:var(--tb-ink);font-weight:700}.status-pending{color:var(--tb-muted);font-weight:700}

/* ─── Callouts ─── */
.callout{display:flex;gap:14px;margin-top:24px;padding:18px 22px;border-left:3px solid var(--tb-ink);border-radius:0 12px 12px 0;background:var(--tb-paper);color:var(--tb-ink);font-size:13px;line-height:1.65}
.callout i{margin-top:3px;color:var(--tb-ink);flex-shrink:0}.callout strong{color:var(--tb-ink)}.callout>div{min-width:0}
.callout-info{border-left-style:dashed}
.callout-danger{background:#fff;border:1px solid var(--tb-ink);border-left:3px solid var(--tb-ink)}
.callout-success{background:var(--tb-ink);color:#fff}.callout-success i,.callout-success strong{color:#fff}

/* ─── Signing section ─── */
.signing-steps{display:grid;gap:16px}
.signing-step{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;padding:22px 24px;border:1px solid var(--tb-line);border-radius:12px;background:#fff;transition:transform .2s}.signing-step:hover{transform:translateX(4px)}
.signing-step-num{display:grid;width:36px;height:36px;place-items:center;border-radius:10px;background:var(--tb-ink);color:#fff;font:700 13px var(--tb-mono)}
.signing-step h4{margin:0 0 6px;font-size:15px}.signing-step p{margin:0;color:var(--tb-muted);font-size:13px;line-height:1.6}
.signing-step code{color:var(--tb-ink);font-size:12px;font-weight:600}

/* ─── Code blocks inside content ─── */
.code-block{margin:16px 0;overflow:hidden;border-radius:10px;background:var(--tb-code);box-shadow:var(--tb-shadow-sm)}
.code-block-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid rgba(255,255,255,.1);color:#9a9a9a;font:500 11px var(--tb-mono)}
.code-block pre{margin:0;padding:20px;overflow-x:auto;font:13px/1.8 var(--tb-mono);color:#e5e5e5}

/* ─── Query order statuses ─── */
.status-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-top:24px}
.status-chip{display:flex;align-items:center;gap:10px;padding:14px 16px;border:1px solid var(--tb-line);border-radius:10px;background:#fff;font-size:13px;font-weight:600;color:var(--tb-ink);transition:transform .15s}.status-chip:hover{transform:translateY(-2px)}
.status-chip i{font-size:11px;color:var(--tb-ink)}

/* ─── Footer ─── */
footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 34px;border-top:1px solid var(--tb-line);color:var(--tb-muted);font-size:12px}
footer a{color:var(--tb-ink);font-weight:600}footer a:hover{text-decoration:underline}

/* ─── Responsive ─── */
@media(max-width:1060px){.layout{grid-template-columns:minmax(0,1fr)}.sidebar{display:none}.docs{margin:0 auto;padding-inline:34px}.api-body{grid-template-columns:minmax(0,1fr)}.api-params{border-right:0;border-bottom:1px solid var(--tb-line)}}
@media(max-width:760px){
  .topbar{min-height:60px;padding:0 18px}
  .brand-text{display:none}
  .topnav>a:not(.topnav-cta){display:none}.topnav .topnav-cta{padding:8px 12px;font-size:12px}
  .mobile-menu{display:grid}
  .topnav{position:absolute;top:59px;left:12px;right:12px;display:none;padding:10px;border:1px solid var(--tb-line);border-radius:12px;background:rgba(255,255,255,.98);box-shadow:var(--tb-shadow-lg);backdrop-filter:blur(14px)}.topnav.is-open{display:grid;gap:3px}.topnav.is-open a,.topnav.is-open>a:not(.topnav-cta){display:flex;min-height:44px;padding:0 12px;border-radius:8px}.topnav.is-open a:hover{background:var(--tb-paper)}.topnav.is-open .topnav-cta{justify-content:center;margin-top:4px;color:#fff}
  .docs{padding:0 18px 70px}
  .hero{grid-template-columns:minmax(0,1fr);min-height:auto;gap:44px;padding:56px 0}h1{font-size:clamp(2.2rem,10vw,3.2rem)}
  .hero-lead{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .section{padding:56px 0}
  .steps-grid{grid-template-columns:1fr}
  .creds-grid{grid-template-columns:1fr}
  .platform-grid{grid-template-columns:1fr}
  .api-body{grid-template-columns:minmax(0,1fr)}.api-params{border-right:0;border-bottom:1px solid var(--tb-line)}
  .param-row{grid-template-columns:minmax(0,1fr);gap:4px}
  .status-grid{grid-template-columns:1fr 1fr}
  .signing-step{grid-template-columns:minmax(0,1fr)}
  .note-card{grid-template-columns:minmax(0,1fr)}
  footer{padding-inline:18px;flex-direction:column;text-align:center;gap:10px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}