/* ── Variables ── */
:root{--bg:#06060a;--surface:#0e0e15;--border:#1a1a2e;--border-hover:#2a2a45;--text:#eaeaf0;--text-muted:#9292a8;--accent:#6366f1;--accent-light:#818cf8;--green:#22c55e}
[data-theme="light"]{--bg:#f5f5f7;--surface:#ffffff;--border:#d4d4d8;--border-hover:#a1a1aa;--text:#18181b;--text-muted:#52525b;--accent:#4f46e5;--accent-light:#6366f1;--green:#16a34a}

/* ── Syntax highlighting (light mode) ── */
[data-theme="light"] .t-str{color:#059669}
[data-theme="light"] .t-kw{color:#7c3aed}
[data-theme="light"] .t-fn{color:#2563eb}
[data-theme="light"] .t-cm{color:#a1a1aa}
[data-theme="light"] .t-key{color:#2563eb}
[data-theme="light"] .t-num{color:#d97706}

/* ── Reset ── */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh}

/* ── Layout ── */
.container{max-width:720px;margin:0 auto;padding:0 24px}

/* ── Nav ── */
nav{display:flex;justify-content:space-between;align-items:center;padding:20px 0;position:sticky;top:0;background:var(--bg);z-index:100}
.nav-logo{font-size:15px;font-weight:700;color:var(--text);text-decoration:none}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-back{font-size:13px;color:var(--text-muted);text-decoration:none;padding:8px 14px;border:1px solid var(--border);border-radius:8px;transition:all .2s}
.nav-back:hover{border-color:var(--accent);color:var(--text)}

/* ── Nav links ── */
.nav-links{display:flex;gap:6px;align-items:center}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:8px;font-size:13px;font-weight:500;text-decoration:none;color:var(--text-muted);transition:all .2s;border:1px solid transparent;height:36px}
.nav-link:hover{color:var(--text);background:var(--surface);border-color:var(--border)}
.nav-link svg{width:15px;height:15px;fill:currentColor}
.nav-link.primary{background:linear-gradient(135deg,#2AABEE,#229ED9);color:white;border-color:transparent}
.nav-link.primary:hover{filter:brightness(1.15);transform:translateY(-1px)}

/* ── Theme toggle ── */
.theme-toggle{background:var(--surface);border:1px solid var(--border);color:var(--text-muted);width:36px;height:36px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}
.theme-toggle:hover{color:var(--text);border-color:var(--border-hover)}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .icon-moon{fill:currentColor}
.theme-toggle .icon-sun{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.theme-toggle .icon-sun{display:none}
.theme-toggle .icon-moon{display:block}
[data-theme="light"] .theme-toggle .icon-sun{display:block}
[data-theme="light"] .theme-toggle .icon-moon{display:none}

/* ── Typography ── */
article{padding:48px 0}
h1{font-size:36px;font-weight:700;line-height:1.15;letter-spacing:-1px;margin-bottom:16px}
h1 .gradient{background:linear-gradient(135deg,var(--accent),var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.lead{font-size:17px;color:var(--text-muted);margin-bottom:40px}
h2{font-size:22px;font-weight:600;margin:40px 0 12px}
h3{font-size:17px;font-weight:600;margin:24px 0 8px;color:var(--text)}
p{font-size:15px;color:var(--text-muted);margin-bottom:16px}
strong{color:var(--text)}

/* ── Code ── */
code{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--accent);background:var(--surface);padding:2px 6px;border-radius:4px}
.code-block{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px;margin:24px 0;overflow-x:auto}
.code-block pre{font-family:'JetBrains Mono',monospace;font-size:13px;line-height:1.8;color:var(--text-muted)}

/* ── Syntax highlighting ── */
.t-str{color:#34d399}.t-kw{color:#c084fc}.t-fn{color:#60a5fa}.t-cm{color:#3b3b50}
.t-key{color:#60a5fa}.t-num{color:#f59e0b}

/* ── CTA ── */
.cta{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:32px;text-align:center;margin:40px 0}
.cta h3{font-size:20px;margin-bottom:8px}
.cta p{color:var(--text-muted);margin-bottom:16px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:8px;font-size:14px;font-weight:500;text-decoration:none;background:var(--accent);color:white;transition:all .2s}
.btn:hover{filter:brightness(1.15);transform:translateY(-1px)}

/* ── Telegram CTA ── */
.cta-tg{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border-radius:12px;font-size:16px;font-weight:600;text-decoration:none;color:white;background:linear-gradient(135deg,#2AABEE,#229ED9);box-shadow:0 4px 20px rgba(42,171,238,.3);transition:all .3s}
.cta-tg:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(42,171,238,.45)}
.cta-tg svg{width:20px;height:20px;fill:white}
.cta-card{background:linear-gradient(135deg,var(--surface) 0%,rgba(42,171,238,.05) 100%);border:1px solid rgba(42,171,238,.2);border-radius:16px;padding:40px;text-align:center;margin:40px 0}
.cta-card h3{font-size:24px;font-weight:700;margin-bottom:8px}
.cta-card p{color:var(--text-muted);margin-bottom:24px;font-size:15px}

/* ── Footer ── */
footer{text-align:center;padding:40px 0;border-top:1px solid var(--border);font-size:13px;color:var(--text-muted)}
.footer-links{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin-bottom:16px}
.footer-links a{color:var(--text-muted);text-decoration:none;font-size:13px;transition:color .2s}
.footer-links a:hover{color:var(--accent)}

/* ── Responsive ── */
@media(max-width:640px){h1{font-size:26px}h2{font-size:18px}.nav-links{gap:2px}.nav-link{padding:6px 10px;font-size:12px;height:32px}.nav-link span{display:none}.nav-link svg{width:18px;height:18px}.theme-toggle{width:32px;height:32px}}