:root{
--primary:#7a0020; --secondary:#1e3a8a; --accent:#d4af37; --accent-100:#faf6ea; --whatsapp:#25d366;
--bg:#ffffff; --bg-alt:#f8fafc; --text:#0f172a; --muted:#475569; --border:#e2e8f0;
--success:#059669; --warning:#d97706; --shadow:0 6px 20px rgba(2,6,23,.12); --radius:14px;
}
@media (prefers-color-scheme: dark){:root{--bg:#0b1220;--bg-alt:#0f172a;--text:#e5e7eb;--muted:#94a3b8;--border:#1f2937}}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;font:15px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;color:var(--text);background:linear-gradient(135deg,var(--secondary),var(--primary))}
.app{max-width:420px;margin:0 auto;min-height:100vh;background:var(--bg);display:grid;grid-template-rows:auto auto 1fr}
.header{padding:24px;background:radial-gradient(120% 120% at 0% 0%,var(--secondary),var(--primary) 60%);color:#fff}
.brand{display:flex;gap:12px;align-items:center}
.brand__logo{width:36px;height:36px;border-radius:10px;background:#fff2;display:grid;place-items:center;font-weight:800}
.brand__name{font-size:22px;font-weight:800}
.tax-pill{margin-top:12px;padding:10px 12px;border-radius:12px;border:1px solid var(--accent);background:color-mix(in oklab, var(--accent) 12%, #fff0);color:#fff;font-size:13px}
nav.tabs{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:5}
.tab{appearance:none;background:none;border:0;padding:12px 6px;cursor:pointer;font-weight:700;font-size:11px;color:var(--muted);display:grid;place-items:center;gap:4px}
.tab[aria-selected="true"]{color:var(--primary);box-shadow:inset 0 -3px 0 var(--primary)}
main{padding:16px}.panel{display:none}.panel[aria-hidden="false"]{display:block}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:20px}
.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.kpi{text-align:center;border-top:4px solid var(--primary)}.kpi--tax{border-top-color:var(--warning)}
.kpi__n{font-size:26px;font-weight:900}.kpi__l{font-size:12px;color:var(--muted);text-transform:uppercase;font-weight:700}
.section-title{color:var(--primary);margin:0 0 10px;font-weight:800}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:10px;border:1px solid transparent;font-weight:700;cursor:pointer}
.btn--primary{background:var(--primary);color:#fff}.btn--secondary{background:var(--bg);color:var(--text);border-color:var(--border)}.btn--wa{background:var(--whatsapp);color:#fff}.btn--sm{padding:8px 12px;font-size:13px}
.field{display:grid;gap:6px;margin-bottom:12px}.label{font-size:13px;font-weight:700;color:var(--muted)}.input,select{width:100%;padding:12px;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text)}
.tax-box{background:var(--accent-100);border:2px solid var(--accent);border-radius:12px;padding:14px;display:grid;gap:8px}
.row{display:flex;justify-content:space-between;gap:10px}.row--top{border-top:1px dashed var(--accent);padding-top:8px;font-weight:800}
.chip{display:inline-flex;gap:8px;align-items:center;padding:6px 10px;border-radius:999px;background:var(--bg-alt);border:1px solid var(--border);font-size:12px;color:var(--muted)}
.tag{font-size:12px;padding:4px 8px;border-radius:8px}.tag--ok{background:#d1fae5;color:var(--success)}.tag--warn{background:#fef3c7;color:var(--warning)}
.modal{position:fixed;inset:0;display:none;place-items:center;background:rgba(2,6,23,.45);z-index:50}.modal[open]{display:grid}
.dialog{background:var(--bg);border:1px solid var(--border);width:min(420px,92vw);border-radius:16px;padding:16px;box-shadow:var(--shadow)}
.dialog__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.close{appearance:none;background:none;border:0;font-size:22px;cursor:pointer;color:var(--muted)}
.fab{position:fixed;right:16px;bottom:16px;width:60px;height:60px;border-radius:999px;border:0;background:var(--primary);color:#fff;font-size:26px;box-shadow:var(--shadow);cursor:pointer}
.auth-fab{position:fixed;top:8px;right:8px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.brand__img { width:36px; height:36px; border-radius:10px; display:block; }