:root{--bg:#f6f7f9;--surface:#fff;--surface-2:#fafbfc;--border:#e3e6ea;--text:#1c2024;--text-muted:#65707b;--primary:#1f6feb;--primary-hover:#1a5fce;--sidebar-bg:#11161c;--sidebar-text:#c2ccd6;--sidebar-text-active:#fff;--sidebar-active:#1f2933;--radius:10px;--shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.1);--sidebar-width:248px;--header-height:60px}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{line-height:1.25;margin:0 0 .5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.55rem 1rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:.95rem;font-weight:500;cursor:pointer;transition:background .15s ease,border-color .15s ease}.btn:hover{background:var(--surface-2);text-decoration:none}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.btn:disabled{opacity:.6;cursor:not-allowed}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.25rem}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));grid-gap:1rem;gap:1rem}.card-title{font-size:.85rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em;margin:0 0 .5rem}.card-metric{font-size:1.9rem;font-weight:650;margin:0}.muted{color:var(--text-muted)}.stack{display:flex;flex-direction:column;gap:1rem}.center-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}.panel{width:100%;max-width:420px}.field{display:flex;flex-direction:column;gap:.35rem;margin-bottom:1rem}.field label{font-size:.85rem;font-weight:600;color:var(--text-muted)}.field input{padding:.6rem .75rem;border:1px solid var(--border);border-radius:var(--radius);font-size:.95rem;background:var(--surface);color:var(--text)}.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,111,235,.15)}.alert{padding:.65rem .85rem;border-radius:var(--radius);font-size:.9rem;margin-bottom:1rem}.alert-error{background:#fdecec;border:1px solid #f5c2c2;color:#b42318}.alert-info{background:#eef4ff;border:1px solid #c7d8fb;color:#1f4fb0}.app-shell{display:grid;grid-template-columns:var(--sidebar-width) 1fr;min-height:100vh}.sidebar{background:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;padding:1.25rem .75rem;gap:.25rem;position:-webkit-sticky;position:sticky;top:0;height:100vh}.sidebar-brand{padding:.25rem .75rem 1rem;font-weight:700;font-size:1.05rem;color:var(--sidebar-text-active)}.sidebar-brand small{font-size:.75rem;letter-spacing:.04em}.nav-link,.sidebar-brand small{display:block;font-weight:500;color:var(--sidebar-text)}.nav-link{padding:.55rem .75rem;border-radius:8px;font-size:.92rem}.nav-link:hover{background:var(--sidebar-active);color:var(--sidebar-text-active);text-decoration:none}.content{display:flex;flex-direction:column;min-width:0}.app-header{height:var(--header-height);border-bottom:1px solid var(--border);background:var(--surface);display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;position:-webkit-sticky;position:sticky;top:0;z-index:10}.app-header h1{font-size:1.05rem;margin:0}.app-main{padding:1.75rem;flex:1 1}.page-header{margin-bottom:1.5rem}.page-header h1{font-size:1.5rem}.badge{display:inline-block;padding:.15rem .55rem;border-radius:999px;background:var(--surface-2);font-size:.72rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.badge,.list{border:1px solid var(--border)}.list{list-style:none;margin:0;padding:0;border-radius:var(--radius);overflow:hidden;background:var(--surface)}.list li{padding:.75rem 1rem;border-bottom:1px solid var(--border)}.list li:last-child{border-bottom:none}@media (max-width:720px){.app-shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center}}