/* base.css — design tokens, reset, layout shell */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{
  --bg:#f5f5f2;--surf:#fff;--surf2:#f0f0ed;--surf3:#e8e8e4;
  --bdr:#e2e2dc;--bdr2:#cecec4;
  --txt:#181816;--muted:#636360;--dim:#9e9e98;--hint:#c4c4bc;
  --blue:#1455a4;--blue-lt:#e8f0fb;--blue-bd:#bad0f0;
  --green:#1f6b3e;--green-lt:#e8f5ee;--green-bd:#8dd4aa;
  --amber:#7a5500;--amber-lt:#fdf3e0;--amber-bd:#e0c070;
  --red:#b83030;--red-lt:#fdecea;--red-bd:#f0a8a8;
  --purple:#4a30a0;--purple-lt:#eeebfb;--purple-bd:#c0b0f0;
  --teal:#0f7070;--teal-lt:#e4f4f4;--teal-bd:#80cece;
  --orange:#b84c00;--orange-lt:#fff0e8;--orange-bd:#f0b898;
  --r:12px;--r-sm:8px;--r-xs:5px;
  --shadow:0 1px 3px rgba(0,0,0,.06),0 4px 14px rgba(0,0,0,.04);
  --shadow-lg:0 8px 32px rgba(0,0,0,.13);
  --nav-h:60px;
  --topbar-h:57px;
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html,body{min-height:100%;background:var(--bg);color:var(--txt);font-family:'DM Sans',sans-serif;font-size:14px;line-height:1.55}
*{scrollbar-width:thin;scrollbar-color:var(--bdr2) transparent}
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--bdr2);border-radius:99px}

/* ── Shell ───────────────────────────────────────────────────────────────── */
.shell{display:flex;min-height:100vh}
.sidebar{
  width:228px;background:var(--surf);border-right:1px solid var(--bdr);
  position:fixed;top:0;left:0;height:100vh;display:flex;flex-direction:column;z-index:30;
  transition:transform .2s ease;
}
.content{margin-left:228px;flex:1;min-width:0}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.sb-logo{padding:18px 18px 14px;border-bottom:1px solid var(--bdr);flex-shrink:0}
.sb-type{font-size:15px;font-weight:700;letter-spacing:-.3px}
.sb-type span{color:var(--dim);font-weight:400}
.sb-sub{font-size:11px;color:var(--dim);margin-top:1px}
.sb-nav{padding:8px 0;flex:1;overflow-y:auto}
.sb-sec{padding:8px 16px 3px;font-size:10px;font-weight:700;color:var(--hint);text-transform:uppercase;letter-spacing:.1em}
.sb-item{
  display:flex;align-items:center;gap:9px;padding:10px 16px;
  font-size:13px;color:var(--muted);cursor:pointer;border:none;background:none;
  width:100%;text-align:left;border-left:2px solid transparent;
  transition:all .12s;min-height:44px;
}
.sb-item:hover{color:var(--txt);background:var(--bg)}
.sb-item.active{color:var(--txt);border-left-color:var(--txt);background:var(--surf2);font-weight:600}
.sb-badge{
  margin-left:auto;background:var(--red);color:#fff;
  font-size:10px;font-weight:700;border-radius:99px;padding:2px 7px;min-width:20px;text-align:center;
}
.sb-foot{padding:12px 16px;border-top:1px solid var(--bdr);flex-shrink:0}
.sb-dot{width:8px;height:8px;border-radius:50%;display:inline-block;background:var(--dim);transition:background .3s;flex-shrink:0}
.sb-dot.ok{background:var(--green)}.sb-dot.err{background:var(--red)}.sb-dot.spin{background:var(--amber);animation:pulse 1s infinite}
.sb-ai-btn{
  display:flex;align-items:center;gap:8px;padding:10px 16px;
  background:linear-gradient(135deg,var(--purple-lt),var(--blue-lt));
  border-top:1px solid var(--purple-bd);border:none;width:100%;
  font-size:13px;font-weight:600;color:var(--purple);cursor:pointer;
  transition:opacity .15s;min-height:44px;
}
.sb-ai-btn:hover{opacity:.85}

/* ── Bottom nav (mobile only) ────────────────────────────────────────────── */
.bottom-nav{
  display:none;position:fixed;bottom:0;left:0;right:0;height:var(--nav-h);
  background:var(--surf);border-top:1px solid var(--bdr);z-index:40;
  flex-direction:row;
}
.bn-item{
  flex:1;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:2px;border:none;background:none;
  color:var(--dim);font-size:10px;font-weight:500;cursor:pointer;
  padding:6px 4px;position:relative;min-height:44px;transition:color .12s;
}
.bn-item.active{color:var(--txt)}
.bn-icon{font-size:19px;line-height:1}
.bn-badge{
  position:absolute;top:5px;right:calc(50% - 20px);
  background:var(--red);color:#fff;font-size:9px;font-weight:700;
  border-radius:99px;padding:1px 5px;min-width:16px;text-align:center;
}

/* ── Views ───────────────────────────────────────────────────────────────── */
.view{display:none}.view.active{display:block}

/* ── Topbar ──────────────────────────────────────────────────────────────── */
.topbar{
  background:var(--surf);border-bottom:1px solid var(--bdr);
  padding:11px 20px;display:flex;align-items:center;
  justify-content:space-between;gap:10px;
  position:sticky;top:0;z-index:20;height:var(--topbar-h);
}
.topbar-title{font-size:16px;font-weight:700;letter-spacing:-.3px}
.topbar-sub{font-size:12px;color:var(--muted);margin-top:1px}
.topbar-right{display:flex;gap:7px;align-items:center;flex-shrink:0;flex-wrap:wrap}
.page{padding:16px 20px;display:flex;flex-direction:column;gap:14px}

/* ── Animations ──────────────────────────────────────────────────────────── */
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
@keyframes sp{to{transform:rotate(360deg)}}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:none}}
@keyframes slideRight{from{transform:translateX(100%)}to{transform:none}}