/* ══════════════════════════════════════════════
   Qiia UX — Design System
   Two layers:
   1. Product tokens  (web pages + design hub)
   2. Telegram mock tokens (chat mockups only — approximates
      Telegram's own theme so flows read like the real app)
   Light by default; dark via prefers-color-scheme or
   <html data-theme="dark">. Force light with data-theme="light".
   ══════════════════════════════════════════════ */

:root {
    /* ── Brand ── */
    --accent: #0F766E;          /* teal 700 — trust, money */
    --accent-strong: #115E59;
    --accent-soft: #CCFBF1;
    --accent-text: #0F766E;
    --on-accent: #FFFFFF;

    /* ── Surfaces ── */
    --bg: #F7F8F8;
    --surface: #FFFFFF;
    --surface-sunken: #F1F3F3;
    --surface-hover: #EEF1F1;

    /* ── Borders ── */
    --border: #E2E6E6;
    --border-strong: #CBD2D2;

    /* ── Text ── */
    --text: #111817;
    --text-2: #56605F;
    --text-3: #8A9493;

    /* ── Status ── */
    --good: #15803D;   --good-bg: #DCFCE7;
    --warn: #B45309;   --warn-bg: #FEF3C7;
    --bad: #B91C1C;    --bad-bg: #FEE2E2;
    --info: #1D4ED8;   --info-bg: #DBEAFE;

    /* ── Shape ── */
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow-md: 0 4px 16px rgba(0,0,0,.08);
    --sidebar-w: 240px;

    /* ── Telegram mock (light) ── */
    --tg-wallpaper: #CFDCC4;
    --tg-wallpaper-dots: rgba(255,255,255,.35);
    --tg-header: #FFFFFF;
    --tg-bubble-in: #FFFFFF;
    --tg-bubble-out: #E3F8CF;
    --tg-text: #000000;
    --tg-meta: #8C9A86;
    --tg-meta-out: #5FA35A;
    --tg-link: #2A7DC1;
    --tg-kb: rgba(52, 78, 52, .42);
    --tg-kb-text: #FFFFFF;
    --tg-service: rgba(52, 78, 52, .45);
    --tg-input: #FFFFFF;
    --tg-name-bot: #3E8E3A;
    --tg-name-1: #C2543E;
    --tg-name-2: #2F7BBF;
    --tg-name-3: #8E4FB8;
    --tg-name-4: #C28A1E;
    --tg-quote: #3E8E3A;

    --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --accent: #2DD4BF; --accent-strong: #5EEAD4; --accent-soft: #134E4A; --accent-text: #5EEAD4; --on-accent: #042F2E;
        --bg: #0B0F0F; --surface: #121818; --surface-sunken: #0E1414; --surface-hover: #1A2222;
        --border: #222C2C; --border-strong: #2F3B3B;
        --text: #E6ECEB; --text-2: #A1ACAB; --text-3: #6E7A79;
        --good: #4ADE80; --good-bg: #052E16; --warn: #FBBF24; --warn-bg: #3B2604; --bad: #F87171; --bad-bg: #3F0B0B; --info: #93C5FD; --info-bg: #172554;
        --shadow-sm: 0 1px 2px rgba(0,0,0,.3); --shadow-md: 0 4px 16px rgba(0,0,0,.4);
        --tg-wallpaper: #0E1621; --tg-wallpaper-dots: rgba(255,255,255,.03); --tg-header: #17212B;
        --tg-bubble-in: #182533; --tg-bubble-out: #2B5278; --tg-text: #F5F5F5; --tg-meta: #6D7F8F; --tg-meta-out: #7DA8D3;
        --tg-link: #71BAFA; --tg-kb: rgba(255,255,255,.10); --tg-kb-text: #F5F5F5; --tg-service: rgba(0,0,0,.35); --tg-input: #17212B;
        --tg-name-bot: #7BC862; --tg-name-1: #EE7A5C; --tg-name-2: #6EC9F7; --tg-name-3: #B694F9; --tg-name-4: #E9B85A; --tg-quote: #7BC862;
    }
}
:root[data-theme="dark"] {
    --accent: #2DD4BF; --accent-strong: #5EEAD4; --accent-soft: #134E4A; --accent-text: #5EEAD4; --on-accent: #042F2E;
    --bg: #0B0F0F; --surface: #121818; --surface-sunken: #0E1414; --surface-hover: #1A2222;
    --border: #222C2C; --border-strong: #2F3B3B;
    --text: #E6ECEB; --text-2: #A1ACAB; --text-3: #6E7A79;
    --good: #4ADE80; --good-bg: #052E16; --warn: #FBBF24; --warn-bg: #3B2604; --bad: #F87171; --bad-bg: #3F0B0B; --info: #93C5FD; --info-bg: #172554;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3); --shadow-md: 0 4px 16px rgba(0,0,0,.4);
    --tg-wallpaper: #0E1621; --tg-wallpaper-dots: rgba(255,255,255,.03); --tg-header: #17212B;
    --tg-bubble-in: #182533; --tg-bubble-out: #2B5278; --tg-text: #F5F5F5; --tg-meta: #6D7F8F; --tg-meta-out: #7DA8D3;
    --tg-link: #71BAFA; --tg-kb: rgba(255,255,255,.10); --tg-kb-text: #F5F5F5; --tg-service: rgba(0,0,0,.35); --tg-input: #17212B;
    --tg-name-bot: #7BC862; --tg-name-1: #EE7A5C; --tg-name-2: #6EC9F7; --tg-name-3: #B694F9; --tg-name-4: #E9B85A; --tg-quote: #7BC862;
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 15px; line-height: 1.5; color: var(--text); background: var(--bg); }
a { color: var(--accent-text); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0; }
code, kbd { font-family: var(--mono); font-size: .88em; background: var(--surface-sunken); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ══════════ Design hub shell ══════════ */
.app { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); flex: none; background: var(--surface); border-right: 1px solid var(--border); padding: 20px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 10px; padding: 0 8px 20px; }
.brand-mark { width: 32px; height: 32px; border-radius: 8px; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-weight: 700; font-size: 14px; }
.brand-name { font-weight: 700; }
.brand-sub { font-size: 12px; color: var(--text-3); }
.nav-label { font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); padding: 16px 8px 6px; }
.nav-link { display: block; padding: 7px 10px; border-radius: 6px; color: var(--text-2); text-decoration: none; font-size: 14px; }
.nav-link:hover { background: var(--surface-hover); color: var(--text); }
.nav-link[aria-current="page"] { background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.theme-toggle { margin: 20px 8px 0; width: calc(100% - 16px); }

.main { flex: 1; min-width: 0; padding: 32px 40px 64px; }
.page-head { max-width: 980px; margin-bottom: 28px; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--accent-text); margin-bottom: 6px; }
.page-title { font-size: 28px; font-weight: 700; }
.page-lead { color: var(--text-2); margin: 8px 0 0; max-width: 760px; }
.section { margin-top: 40px; }
.section-title { font-size: 19px; font-weight: 650; margin-bottom: 4px; }
.section-lead { color: var(--text-2); margin: 0 0 16px; max-width: 760px; }

.mobile-bar { display: none; }

@media (max-width: 860px) {
    .app { display: block; }
    .sidebar { position: fixed; inset: 0 auto 0 0; z-index: 20; transform: translateX(-100%); transition: transform .2s ease; box-shadow: var(--shadow-md); }
    .sidebar.open { transform: none; }
    .mobile-bar { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
    .main { padding: 20px 16px 48px; }
}

/* ── Generic components ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 8px 16px; border-radius: var(--radius); border: 1px solid transparent; font: inherit; font-weight: 600; font-size: 14px; cursor: pointer; text-decoration: none; transition: background .15s ease, border-color .15s ease; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-strong); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--surface-hover); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-hover); color: var(--text); }
.btn-lg { min-height: 48px; padding: 12px 22px; font-size: 15px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow-sm); }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--surface-sunken); color: var(--text-2); border: 1px solid var(--border); }
.badge-good { background: var(--good-bg); color: var(--good); border-color: transparent; }
.badge-warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.badge-bad { background: var(--bad-bg); color: var(--bad); border-color: transparent; }
.badge-info { background: var(--info-bg); color: var(--info); border-color: transparent; }
.badge-accent { background: var(--accent-soft); color: var(--accent-text); border-color: transparent; }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); font-weight: 600; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); }

.note { border-left: 3px solid var(--accent); background: var(--surface); padding: 12px 16px; border-radius: 0 var(--radius) var(--radius) 0; color: var(--text-2); font-size: 14px; }
.note strong { color: var(--text); }

/* ── Flow pages: scenes ── */
.scenes { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 28px 24px; align-items: start; }
.scene { margin: 0; }
.scene-cap { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 10px; }
.scene-num { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-size: 12px; font-weight: 700; display: grid; place-items: center; margin-top: 1px; }
.scene-num.alt { background: var(--warn); color: #fff; }
.scene-num.err { background: var(--bad); color: #fff; }
.scene-title { font-weight: 650; font-size: 15px; }
.scene-desc { font-size: 13px; color: var(--text-2); margin-top: 2px; }
.spec { margin-top: 10px; font-size: 13px; color: var(--text-2); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; }
.spec ul { margin: 0; padding-left: 18px; }
.spec li + li { margin-top: 3px; }
.spec-title { font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); margin-bottom: 4px; }

/* ══════════ Telegram mock ══════════ */
.phone { max-width: 380px; border-radius: 18px; overflow: hidden; border: 1px solid var(--border-strong); box-shadow: var(--shadow-md); background: var(--tg-wallpaper); font-family: -apple-system, 'Segoe UI', Roboto, var(--font); font-size: 14.5px; }
.tg-head { display: flex; align-items: center; gap: 10px; padding: 9px 12px; background: var(--tg-header); border-bottom: 1px solid rgba(0,0,0,.06); }
.tg-back { color: var(--tg-link); font-size: 20px; line-height: 1; width: 14px; }
.tg-avatar { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 600; font-size: 14px; flex: none; background: linear-gradient(135deg, #5FBF8F, #2E9E78); }
.tg-avatar.bot { background: linear-gradient(135deg, #2DD4BF, #0F766E); }
.tg-avatar.b { background: linear-gradient(135deg, #F2A65A, #D9773A); }
.tg-avatar.c { background: linear-gradient(135deg, #7AB8F5, #3B82C4); }
.tg-title { font-weight: 600; color: var(--tg-text); font-size: 15px; line-height: 1.2; }
.tg-sub { font-size: 12.5px; color: var(--tg-meta); }
.tg-chat { padding: 10px 8px 12px; display: flex; flex-direction: column; gap: 6px; background-image: radial-gradient(var(--tg-wallpaper-dots) 1.2px, transparent 1.2px); background-size: 18px 18px; min-height: 120px; }

.tg-service { align-self: center; background: var(--tg-service); color: #fff; font-size: 12.5px; padding: 3px 10px; border-radius: 12px; text-align: center; max-width: 90%; }

.msg { position: relative; max-width: 88%; padding: 6px 9px 7px; border-radius: 12px; background: var(--tg-bubble-in); color: var(--tg-text); align-self: flex-start; box-shadow: 0 1px 1px rgba(0,0,0,.08); word-wrap: break-word; }
.msg.out { align-self: flex-end; background: var(--tg-bubble-out); }
.msg.wide { max-width: 94%; width: 94%; }
.msg-author { font-weight: 600; font-size: 13.5px; margin-bottom: 1px; color: var(--tg-name-2); }
.msg-author.bot { color: var(--tg-name-bot); }
.msg-author.c1 { color: var(--tg-name-1); }
.msg-author.c3 { color: var(--tg-name-3); }
.msg-author.c4 { color: var(--tg-name-4); }
.msg-author .role { font-weight: 400; font-size: 12px; color: var(--tg-meta); margin-left: 4px; }
.msg-time { float: right; font-size: 11.5px; color: var(--tg-meta); margin: 6px 0 -4px 10px; }
.msg.out .msg-time { color: var(--tg-meta-out); }
.msg-time .ticks { margin-left: 2px; }
.msg b, .msg strong { font-weight: 600; }
.msg a, .msg .mention, .msg .cmd { color: var(--tg-link); text-decoration: none; }
.msg .muted { color: var(--tg-meta); }
.msg .mono { font-family: var(--mono); font-size: 13px; }
.msg p { margin: 0; }
.msg p + p { margin-top: 6px; }
.msg .fields { display: grid; grid-template-columns: auto 1fr; gap: 1px 10px; margin: 6px 0; }
.msg .fields dt { color: var(--tg-meta); }
.msg .fields dd { margin: 0; }
.msg .warn-line { margin-top: 6px; }
.msg .rule { border: 0; border-top: 1px solid rgba(127,127,127,.25); margin: 6px 0; }
.msg ol, .msg ul { margin: 4px 0; padding-left: 20px; }
.msg pre { font-family: var(--mono); font-size: 12.5px; margin: 6px 0 0; white-space: pre; overflow-x: auto; }
.msg-reply { border-left: 2px solid var(--tg-quote); padding: 1px 0 1px 7px; margin: 2px 0 5px; font-size: 13px; background: rgba(127,127,127,.08); border-radius: 0 4px 4px 0; }
.msg-reply .who { color: var(--tg-quote); font-weight: 600; display: block; }
.msg-reply .what { color: var(--tg-meta); }
.msg.edited .msg-time::before { content: 'edited '; }
.msg.faded { opacity: .55; }

/* Inline keyboard (attached under a bot message) */
.kb { align-self: flex-start; width: 88%; display: flex; flex-direction: column; gap: 3px; margin-top: -3px; }
.msg.wide + .kb { width: 94%; }
.kb-row { display: flex; gap: 3px; }
.kb-btn { flex: 1; background: var(--tg-kb); color: var(--tg-kb-text); border: 0; border-radius: 8px; padding: 7px 6px; font: inherit; font-size: 13.5px; font-weight: 500; text-align: center; cursor: default; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; position: relative; }
.kb-btn.url::after { content: '↗'; position: absolute; top: 2px; right: 5px; font-size: 10px; opacity: .8; }
.kb-btn.tapped { outline: 2px solid #fff; outline-offset: -2px; }

/* Photo / document messages */
.photo { padding: 3px; }
.photo .msg-time { margin-right: 6px; }
.receipt { width: 200px; background: #FBFAF6; color: #333; font-family: var(--mono); font-size: 10.5px; line-height: 1.35; padding: 12px 12px 18px; border-radius: 9px; transform: rotate(-1.5deg); box-shadow: inset 0 0 0 1px rgba(0,0,0,.06); }
.receipt .r-h { text-align: center; font-weight: 700; font-size: 12px; }
.receipt .r-c { text-align: center; color: #777; }
.receipt .r-row { display: flex; justify-content: space-between; }
.receipt .r-hr { border-top: 1px dashed #bbb; margin: 5px 0; }
.receipt .r-tot { font-weight: 700; font-size: 11.5px; }
.doc { display: flex; align-items: center; gap: 10px; }
.doc-icon { width: 42px; height: 42px; border-radius: 50%; background: var(--tg-link); color: #fff; display: grid; place-items: center; font-size: 11px; font-weight: 700; flex: none; }
.doc-name { font-weight: 500; }
.doc-size { font-size: 12.5px; color: var(--tg-meta); }

/* Status / transient UI */
.tg-typing { align-self: flex-start; font-size: 12.5px; color: var(--tg-meta); background: var(--tg-bubble-in); padding: 4px 10px; border-radius: 12px; font-style: italic; }
.tg-toast { align-self: center; background: rgba(0,0,0,.78); color: #fff; font-size: 13px; padding: 8px 12px; border-radius: 10px; max-width: 85%; text-align: center; }
.tg-alert { align-self: center; background: var(--tg-header); color: var(--tg-text); border-radius: 12px; width: 82%; box-shadow: 0 6px 24px rgba(0,0,0,.25); overflow: hidden; text-align: center; font-size: 14px; }
.tg-alert-body { padding: 14px 14px 12px; }
.tg-alert-btn { border-top: 1px solid rgba(127,127,127,.2); padding: 9px; color: var(--tg-link); font-weight: 600; }
.tg-input { display: flex; align-items: center; gap: 8px; padding: 8px 10px; background: var(--tg-input); border-top: 1px solid rgba(0,0,0,.06); color: var(--tg-meta); font-size: 14px; }
.tg-input .field { flex: 1; }
.tg-input .typed { color: var(--tg-text); }

/* Command menu popup (bot commands) */
.tg-cmds { background: var(--tg-header); border-top: 1px solid rgba(0,0,0,.06); font-size: 13.5px; }
.tg-cmd { display: flex; gap: 10px; padding: 7px 12px; color: var(--tg-text); }
.tg-cmd b { min-width: 92px; font-weight: 600; }
.tg-cmd span { color: var(--tg-meta); }

/* ══════════ Product web pages ══════════ */
.web { min-height: 100vh; display: flex; flex-direction: column; background: var(--bg); }
.web-nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; max-width: 1120px; width: 100%; margin: 0 auto; }
.web-nav a:not(.btn) { text-decoration: none; color: var(--text-2); font-size: 14px; }
.web-nav .links { display: flex; gap: 20px; align-items: center; }
.web-main { flex: 1; width: 100%; max-width: 1120px; margin: 0 auto; padding: 24px; }
.web-foot { border-top: 1px solid var(--border); padding: 20px 24px; color: var(--text-3); font-size: 13px; text-align: center; }
.web-foot a { color: var(--text-2); margin: 0 8px; }
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; padding: 40px 0 56px; }
.hero h1 { font-size: 44px; font-weight: 750; letter-spacing: -.02em; }
.hero p { font-size: 18px; color: var(--text-2); margin: 16px 0 24px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.feature-icon { width: 36px; height: 36px; border-radius: 9px; background: var(--accent-soft); color: var(--accent-text); display: grid; place-items: center; font-size: 18px; margin-bottom: 10px; }
.feature h3 { font-size: 16px; margin-bottom: 4px; }
.feature p { margin: 0; color: var(--text-2); font-size: 14px; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps li { counter-increment: s; display: flex; gap: 12px; align-items: flex-start; }
.steps li::before { content: counter(s); flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 700; font-size: 13px; display: grid; place-items: center; }

.result { max-width: 480px; margin: 48px auto; text-align: center; }
.result-icon { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; margin: 0 auto 16px; font-size: 30px; }
.result-icon.good { background: var(--good-bg); color: var(--good); }
.result-icon.bad { background: var(--bad-bg); color: var(--bad); }
.result-icon.warn { background: var(--warn-bg); color: var(--warn); }
.result h1 { font-size: 24px; margin-bottom: 8px; }
.result p { color: var(--text-2); margin: 0 0 20px; }
.result .kv { text-align: left; margin: 0 0 24px; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; font-size: 14px; }
.kv dt { color: var(--text-3); }
.kv dd { margin: 0; font-weight: 500; }

.prose { max-width: 720px; }
.prose h2 { font-size: 20px; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--text-2); }
.placeholder { background: var(--warn-bg); color: var(--warn); border-radius: 4px; padding: 0 4px; font-weight: 500; }

@media (max-width: 760px) {
    .hero { grid-template-columns: 1fr; gap: 28px; padding-top: 16px; }
    .hero h1 { font-size: 32px; }
    .web-nav .links .hide-sm { display: none; }
    .scenes { grid-template-columns: 1fr; }
}