:root{
  --bg:#f1f5f9; --card:#ffffff; --ink:#0f172a; --muted:#64748b;
  --line:#e2e8f0; --primary:#2563eb; --primary-d:#1d4ed8;
  --sidebar:#0f172a; --sidebar-ink:#cbd5e1; --sidebar-active:#1e293b;
  --green:#16a34a; --amber:#d97706; --red:#dc2626; --shadow:0 1px 3px rgba(15,23,42,.08),0 1px 2px rgba(15,23,42,.04);
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
.hidden{display:none !important}
.muted{color:var(--muted)}
img{display:block}

/* ---------- LOGIN ---------- */
.login-screen{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;
  background:radial-gradient(1200px 600px at 50% -10%,#dbeafe 0%,#f1f5f9 60%);padding:24px}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:0 10px 40px rgba(15,23,42,.10);
  padding:40px 34px;width:100%;max-width:400px;text-align:center}
.login-logo{font-size:52px;line-height:1}
.login-card h1{font-size:24px;margin:14px 0 6px;font-weight:700}
.login-sub{color:var(--muted);font-size:14px;margin-bottom:26px;line-height:1.5}
.google-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;background:#fff;color:#1f2937;
  border:1px solid #dadce0;border-radius:10px;padding:12px 16px;font-size:15px;font-weight:600;cursor:pointer;
  transition:.15s;font-family:inherit}
.google-btn:hover{background:#f8fafc;box-shadow:var(--shadow)}
.gbtn-wrap{display:flex;justify-content:center;min-height:44px}
.login-note{margin-top:16px;font-size:13px;color:var(--muted);min-height:18px}
.login-foot{color:var(--muted);font-size:12.5px}

/* ---------- APP LAYOUT ---------- */
.app{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.sidebar{background:var(--sidebar);color:var(--sidebar-ink);display:flex;flex-direction:column;padding:18px 14px;
  position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;padding:6px 8px 18px}
.brand-logo{font-size:22px}
.nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{display:flex;align-items:center;gap:11px;color:var(--sidebar-ink);text-decoration:none;padding:11px 12px;
  border-radius:10px;font-size:14.5px;font-weight:500;transition:.12s}
.nav-item .ni{font-size:16px;width:20px;text-align:center}
.nav-item:hover{background:var(--sidebar-active);color:#fff}
.nav-item.active{background:var(--primary);color:#fff}
.sidebar-foot{border-top:1px solid #1e293b;padding-top:14px;margin-top:10px}
.user-chip{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.user-chip img{width:36px;height:36px;border-radius:50%;background:#334155;object-fit:cover}
.user-meta{font-size:13px;color:#fff;overflow:hidden}
.user-meta .muted{font-size:11.5px;color:#94a3b8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}
.logout-btn{width:100%;background:transparent;border:1px solid #334155;color:#cbd5e1;border-radius:9px;padding:9px;
  cursor:pointer;font-size:13.5px;font-family:inherit;transition:.12s}
.logout-btn:hover{background:var(--sidebar-active);color:#fff}

.main{display:flex;flex-direction:column;min-width:0}
.topbar{display:flex;align-items:center;gap:14px;padding:16px 26px;background:var(--card);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20}
.topbar h2{font-size:19px;font-weight:600;flex:1}
.menu-btn{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--ink)}
.refresh-btn{background:#f1f5f9;border:1px solid var(--line);border-radius:9px;padding:8px 14px;cursor:pointer;
  font-size:13.5px;font-family:inherit;color:var(--muted)}
.refresh-btn:hover{background:#e2e8f0;color:var(--ink)}
.content{padding:26px;max-width:1100px;width:100%}

/* ---------- CARDS / STATS ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.stat .s-top{display:flex;align-items:center;justify-content:space-between}
.stat .s-ico{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;font-size:18px}
.stat .s-val{font-size:30px;font-weight:700;margin-top:12px;line-height:1}
.stat .s-lab{color:var(--muted);font-size:13.5px;margin-top:4px}
.ic-blue{background:#dbeafe}.ic-green{background:#dcfce7}.ic-amber{background:#fef3c7}.ic-purple{background:#ede9fe}

.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px}
.panel-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.panel-head h3{font-size:15.5px;font-weight:600}
.panel-body{padding:8px 20px 16px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}

/* ---------- LISTS ---------- */
.row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:none}
.row .r-main{flex:1;min-width:0}
.row .r-title{font-size:14.5px;font-weight:500}
.row .r-sub{font-size:12.5px;color:var(--muted);margin-top:2px}
.badge{font-size:12px;font-weight:600;padding:3px 10px;border-radius:20px;white-space:nowrap}
.b-open{background:#fef3c7;color:#92400e}.b-done{background:#dcfce7;color:#166534}
.avatar-sm{width:34px;height:34px;border-radius:9px;background:#eef2f7;display:grid;place-items:center;font-size:16px;flex-shrink:0}

.empty{text-align:center;padding:40px 20px;color:var(--muted)}
.empty .e-ico{font-size:36px;margin-bottom:10px}
.empty .e-t{font-weight:600;color:var(--ink);margin-bottom:4px}
.empty .e-s{font-size:13.5px}

.btn{background:var(--primary);color:#fff;border:none;border-radius:9px;padding:9px 16px;font-size:14px;font-weight:600;
  cursor:pointer;font-family:inherit;transition:.12s}
.btn:hover{background:var(--primary-d)}
.btn-ghost{background:#f1f5f9;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:#e2e8f0}
.btn-sm{padding:6px 12px;font-size:13px}

.skeleton{background:linear-gradient(90deg,#eef2f7 25%,#e2e8f0 37%,#eef2f7 63%);background-size:400% 100%;
  animation:sk 1.4s ease infinite;border-radius:8px;height:14px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- MODAL ---------- */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.45);display:grid;place-items:center;z-index:100;padding:20px}
.modal{background:#fff;border-radius:16px;max-width:460px;width:100%;padding:26px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal h3{font-size:18px;margin-bottom:8px}
.modal p{color:var(--muted);font-size:14px;line-height:1.6;margin-bottom:14px}
.code-box{background:#0f172a;color:#7dd3fc;font-family:ui-monospace,monospace;font-size:20px;letter-spacing:2px;
  text-align:center;padding:16px;border-radius:10px;margin:14px 0;font-weight:700}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}
.field input{width:100%;border:1px solid var(--line);border-radius:9px;padding:10px 12px;font-size:14px;font-family:inherit}
.field input:focus{outline:2px solid #bfdbfe;border-color:var(--primary)}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:6px}

.setup-note{background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:12px 14px;font-size:13.5px;color:#92400e;
  margin-bottom:18px;display:flex;gap:10px;align-items:flex-start}

/* ---------- RESPONSIVE (PHONE) ---------- */
.overlay{position:fixed;inset:0;background:rgba(15,23,42,.4);z-index:29}
@media (max-width:860px){
  .app{grid-template-columns:1fr}
  .sidebar{position:fixed;left:-260px;top:0;bottom:0;width:240px;z-index:30;transition:left .22s ease;height:100vh}
  .sidebar.open{left:0}
  .menu-btn{display:block}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
  .content{padding:18px}
  .topbar{padding:14px 16px}
}
@media (max-width:420px){
  .stat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .stat{padding:14px}
  .stat .s-val{font-size:24px}
}