/* ═══════════════════════════════════════════════════════════════
   VOLTI — Developer Documentation
   Apple Developer Docs inspired
   ═══════════════════════════════════════════════════════════════ */

:root {
    --sidebar-w: 260px;
    --topbar-h: 52px;
    --ease: 0.35s cubic-bezier(0.25,0.1,0.25,1);
    --teal: #2dd4bf;
    --blue: #38bdf8;
    --indigo: #818cf8;
    --purple: #a78bfa;
    --pink: #f472b6;
    --amber: #fbbf24;
    --green: #34d399;
    --g1: linear-gradient(135deg,#2dd4bf,#38bdf8,#818cf8);
}

[data-theme="dark"] {
    --bg: #121318;
    --bg-2: #161720;
    --surface: #1a1b23;
    --surface-2: #22232e;
    --border: rgba(255,255,255,0.06);
    --text: #e8e8ec;
    --text-2: #a0a1ad;
    --text-3: #6c6d7a;
    --bar-bg: rgba(18,19,24,0.88);
    --code-bg: #0d0e13;
    --hover: rgba(45,212,191,0.04);
    --il-bg: rgba(45,212,191,0.1);
    --il-c: var(--teal);
    --note-bg: rgba(45,212,191,0.05);
    --note-border: rgba(45,212,191,0.12);
    --warn-bg: rgba(251,191,36,0.05);
    --warn-border: rgba(251,191,36,0.12);
}

[data-theme="light"] {
    --bg: #fff;
    --bg-2: #fafafa;
    --surface: #f3f3f5;
    --surface-2: #eaeaed;
    --border: rgba(0,0,0,0.07);
    --text: #1d1d1f;
    --text-2: #6e6e73;
    --text-3: #aeaeb2;
    --bar-bg: rgba(255,255,255,0.88);
    --code-bg: #1a1d2e;
    --hover: rgba(0,0,0,0.02);
    --il-bg: rgba(0,150,170,0.07);
    --il-c: #0e7490;
    --note-bg: rgba(0,150,170,0.04);
    --note-border: rgba(0,150,170,0.1);
    --warn-bg: rgba(200,140,0,0.04);
    --warn-border: rgba(200,140,0,0.12);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body.docs-body{font-family:-apple-system,'SF Pro Text','Inter',sans-serif;color:var(--text);background:var(--bg);transition:background .3s,color .3s}

/* ═══ TOPBAR ═══ */
.topbar{
    position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:200;
    background:var(--bar-bg);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
    border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 20px;
}
.topbar-brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--text);font-weight:600;font-size:16px;margin-right:auto}
.topbar-logo{width:24px;height:24px;border-radius:6px;background:var(--g1);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;color:#fff}
.topbar-actions{display:flex;align-items:center;gap:10px}
.topbar-link{font-size:13px;color:var(--teal);text-decoration:none;font-weight:600;transition:var(--ease)}
.topbar-link:hover{opacity:.7}
.theme-btn{
    width:32px;height:32px;border-radius:50%;border:1px solid var(--border);
    background:var(--surface);cursor:pointer;display:flex;align-items:center;justify-content:center;
    font-size:15px;color:var(--text-2);transition:var(--ease);
}
.theme-btn:hover{border-color:var(--teal)}
.topbar-burger{display:none;-webkit-appearance:none;background:none;border:none;cursor:pointer;padding:8px;margin-left:12px}
.topbar-burger svg{display:block}

/* ═══ LAYOUT ═══ */
.layout{display:flex;margin-top:var(--topbar-h)}

/* ═══ SIDEBAR ═══ */
.side{
    width:var(--sidebar-w);height:calc(100vh - var(--topbar-h));position:fixed;top:var(--topbar-h);left:0;
    overflow-y:auto;background:var(--bg-2);border-right:1px solid var(--border);padding:20px 0;
    transition:transform var(--ease);z-index:90;
}
.side::-webkit-scrollbar{width:0}
.side-label{font-size:11px;font-weight:700;color:var(--text-3);text-transform:uppercase;letter-spacing:.08em;padding:16px 24px 6px}
.side-link{
    display:block;font-size:14px;color:var(--text-2);text-decoration:none;padding:8px 24px;
    transition:var(--ease);line-height:1.4;
}
.side-link:hover{color:var(--teal)}
.side-link.active{color:var(--teal);font-weight:600}

.overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:80}

/* ═══ MAIN ═══ */
.main{margin-left:var(--sidebar-w);flex:1;max-width:740px;padding:48px 44px 100px;line-height:1.75;font-size:16px}

/* ═══ SECTIONS ═══ */
.s{scroll-margin-top:72px;margin-bottom:56px}

.s-label{
    font-size:13px;font-weight:700;letter-spacing:.02em;margin-bottom:6px;
    background:var(--g1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.s h1{font-size:34px;font-weight:700;color:var(--text);letter-spacing:-.03em;line-height:1.15;margin-bottom:16px}
.s h2{font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.02em;margin:40px 0 12px;line-height:1.2}
.s h3{font-size:18px;font-weight:700;color:var(--text);margin:28px 0 8px}
.s p{color:var(--text-2);margin-bottom:16px}
.s hr{border:none;border-top:1px solid var(--border);margin:48px 0}

/* ═══ CODE ═══ */
.code{background:var(--code-bg);border-radius:12px;overflow:hidden;margin:20px 0 28px}
.code-bar{display:flex;align-items:center;gap:6px;padding:10px 16px;border-bottom:1px solid rgba(255,255,255,.05)}
.code-dot{width:8px;height:8px;border-radius:50%}
.code-dot:nth-child(1){background:#ff5f57}.code-dot:nth-child(2){background:#febc2e}.code-dot:nth-child(3){background:#28c840}
.code-file{margin-left:8px;font-size:12px;color:rgba(255,255,255,.3);font-weight:500}
.code pre{
    padding:18px 20px;margin:0;
    font-family:'JetBrains Mono','SF Mono','Fira Code',monospace;font-size:14px;line-height:1.8;
    color:rgba(255,255,255,.82);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.hl-kw{color:#22D3EE}.hl-tp{color:#c4b5fd}.hl-fn{color:#34d399}.hl-st{color:#fde68a}
.hl-cm{color:rgba(255,255,255,.22)}.hl-nb{color:#f9a8d4}.hl-op{color:rgba(255,255,255,.35)}

code.il{
    font-family:'JetBrains Mono',monospace;font-size:14px;background:var(--il-bg);color:var(--il-c);
    padding:2px 8px;border-radius:6px;font-weight:500;
}

/* ═══ TABLE ═══ */
.tbl{overflow-x:auto;margin:20px 0 28px;border:1px solid var(--border);border-radius:12px;-webkit-overflow-scrolling:touch}
table.t{width:100%;border-collapse:collapse}
.t th{text-align:left;padding:12px 18px;background:var(--surface);font-weight:600;color:var(--text);border-bottom:1px solid var(--border);font-size:13px}
.t td{padding:12px 18px;border-bottom:1px solid var(--border);color:var(--text-2);font-size:15px}
.t tr:last-child td{border-bottom:none}
.t tr:hover td{background:var(--hover)}
.t .m{display:inline-block;padding:3px 8px;border-radius:6px;font-size:11px;font-weight:800;font-family:'JetBrains Mono',monospace}
.t .m.get{background:rgba(52,211,153,.1);color:var(--green)}
.t .m.post{background:rgba(56,189,248,.1);color:var(--blue)}
.t .m.put{background:rgba(251,191,36,.1);color:var(--amber)}
.t .ep{font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--text);font-weight:600}

/* ═══ NOTE ═══ */
.note{padding:18px 20px;border-radius:12px;margin:20px 0 28px;display:flex;gap:14px;align-items:flex-start}
.note.info{background:var(--note-bg);border:1px solid var(--note-border)}
.note.warn{background:var(--warn-bg);border:1px solid var(--warn-border)}
.note-icon{font-size:18px;flex-shrink:0;line-height:1.6}
.note p{color:var(--text-2);margin:0}
.note strong{color:var(--text)}

/* ═══ BADGES ═══ */
.tags{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 24px}
.tag{padding:5px 12px;border-radius:980px;font-size:13px;font-weight:600}
.tag.teal{background:rgba(45,212,191,.1);color:var(--teal)}
.tag.indigo{background:rgba(129,140,248,.1);color:var(--indigo)}
.tag.purple{background:rgba(167,139,250,.1);color:var(--purple)}
.tag.amber{background:rgba(251,191,36,.1);color:var(--amber)}
.tag.green{background:rgba(52,211,153,.1);color:var(--green)}
.tag.pink{background:rgba(244,114,182,.1);color:var(--pink)}

/* ═══ FLOW ═══ */
.flow{display:flex;flex-direction:column;gap:6px;margin:20px 0 28px}
.flow-row{display:flex;align-items:center;gap:14px;padding:16px 18px;background:var(--surface);border-radius:12px}
.flow-num{width:32px;height:32px;min-width:32px;border-radius:10px;background:var(--g1);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800}
.flow-row strong{font-size:16px;color:var(--text);display:block}
.flow-row span{font-size:14px;color:var(--text-3)}
.flow-down{text-align:center;color:var(--text-3);font-size:14px;padding:2px 0}

/* ═══ FOOTER ═══ */
.doc-foot{margin-left:var(--sidebar-w);padding:28px 44px;border-top:1px solid var(--border);font-size:13px;color:var(--text-3);display:flex;justify-content:space-between}
.doc-foot strong{color:var(--text-2)}

/* ═══════════════════════════════════════
   MOBILE
   ═══════════════════════════════════════ */
@media(max-width:900px){
    .side{transform:translateX(-100%);width:300px;z-index:100;background:var(--bg);box-shadow:none}
    .side.open{transform:translateX(0);box-shadow:4px 0 32px rgba(0,0,0,.25)}
    .overlay.active{display:block}
    .topbar-burger{display:block}
    .main{margin-left:0;padding:36px 24px 80px;max-width:100%}
    .doc-foot{margin-left:0;padding:24px;flex-direction:column;gap:4px}
    .s h1{font-size:28px}
    .s h2{font-size:20px;margin:32px 0 10px}
}

@media(max-width:480px){
    .main{padding:28px 16px 60px}
    .s h1{font-size:24px}
    .s h2{font-size:18px}
    .s p{font-size:15px}
    .code pre{font-size:12px;padding:14px 16px}
    code.il{font-size:12px}
    .t th,.t td{padding:10px 12px;font-size:14px}
    .t .m{font-size:10px;padding:2px 6px}
    .t .ep{font-size:12px}
    .note{padding:14px 16px;gap:10px}
    .flow-row{padding:12px 14px;gap:10px}
    .flow-num{width:28px;height:28px;min-width:28px;font-size:12px;border-radius:8px}
    .flow-row strong{font-size:15px}
    .flow-row span{font-size:13px}
    .tag{font-size:12px;padding:4px 10px}
    .doc-foot{padding:16px;font-size:12px}
}