:root{
  --bg:#070b16;--panel:#0d1424;--panel2:#111b2f;--border:#21304b;--text:#e5edf8;--muted:#8ea0bb;--accent:#38bdf8;--accent2:#8b5cf6;--danger:#ef4444;--ok:#22c55e;--warn:#f59e0b;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Arial;background:radial-gradient(circle at 20% 0%,rgba(56,189,248,.12),transparent 32rem),var(--bg);color:var(--text)}
.hidden{display:none!important}
.login-screen{min-height:100vh;display:grid;place-items:center;padding:2rem}
.login-card{width:min(420px,100%);padding:2rem;border:1px solid var(--border);border-radius:28px;background:rgba(13,20,36,.88);box-shadow:0 32px 100px rgba(0,0,0,.42);backdrop-filter:blur(18px)}
.brand-mark{width:62px;height:62px;border-radius:20px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent2));font-weight:900;box-shadow:0 18px 42px rgba(56,189,248,.28)}
.brand-mark.small{width:42px;height:42px;border-radius:14px}
.login-card h1{margin:.9rem 0 .2rem;font-size:1.7rem}.login-card p{margin:0 0 1.5rem;color:var(--muted)}
label{display:block;color:var(--muted);font-size:.8rem;margin:.8rem 0 .35rem}
input,select,textarea{width:100%;border:1px solid var(--border);background:#08111f;color:var(--text);border-radius:14px;padding:.85rem 1rem;outline:none}
textarea{min-height:240px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;line-height:1.65;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:rgba(56,189,248,.7);box-shadow:0 0 0 3px rgba(56,189,248,.1)}
button{border:0;border-radius:14px;padding:.78rem 1rem;background:linear-gradient(135deg,var(--accent),#2563eb);color:#fff;font-weight:700;cursor:pointer;transition:.16s transform,.16s opacity}
button:hover{transform:translateY(-1px)}button:disabled{opacity:.45;cursor:not-allowed}
.form-error{margin-top:1rem;color:#fecaca;font-size:.88rem}
.app{min-height:100vh;display:grid;grid-template-columns:280px 1fr}
.sidebar{border-right:1px solid var(--border);background:rgba(8,13,25,.86);padding:1.2rem;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:1rem}
.sidebar-brand{display:flex;gap:.8rem;align-items:center;padding:.7rem}.sidebar-brand strong{display:block}.sidebar-brand span{color:var(--muted);font-size:.78rem}
nav{display:grid;gap:.5rem}.nav-btn,.logout-btn{background:transparent;border:1px solid transparent;text-align:left;color:var(--muted)}
.nav-btn.active,.nav-btn:hover{background:rgba(56,189,248,.1);border-color:rgba(56,189,248,.25);color:var(--text)}
.logout-btn{margin-top:auto;border-color:rgba(239,68,68,.35);color:#fecaca}
.main{padding:1.5rem;min-width:0}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem}
.topbar h2{margin:0;font-size:1.8rem}.topbar p{margin:.25rem 0 0;color:var(--muted)}
.period-switch{display:flex;gap:.5rem;background:rgba(13,20,36,.8);padding:.35rem;border:1px solid var(--border);border-radius:18px}
.period-switch button{background:transparent;color:var(--muted);padding:.55rem .85rem}.period-switch button.active{background:rgba(56,189,248,.15);color:var(--text)}
.page{display:none}.page.active{display:block}
.summary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;margin-bottom:1rem}
.summary-card,.panel{border:1px solid var(--border);background:linear-gradient(180deg,rgba(17,27,47,.92),rgba(10,16,30,.92));border-radius:24px;box-shadow:0 22px 60px rgba(0,0,0,.24)}
.summary-card{padding:1.1rem}.summary-card span{color:var(--muted);font-size:.78rem}.summary-card strong{display:block;margin-top:.45rem;font-size:1.6rem}
.panel{padding:1rem;margin-bottom:1rem}
.panel-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem}.panel-head h3{margin:0}.panel-head span{color:var(--muted);font-size:.82rem}
.grid-2{display:grid;grid-template-columns:1.5fr .9fr;gap:1rem}.grid-products{display:grid;grid-template-columns:380px 1fr;gap:1rem;align-items:start}
.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:18px}
table{width:100%;border-collapse:collapse;min-width:820px}th,td{padding:.8rem;border-bottom:1px solid var(--border);text-align:left;font-size:.85rem;vertical-align:top}th{color:var(--muted);background:rgba(8,13,25,.7)}
.badge{display:inline-flex;padding:.25rem .6rem;border-radius:999px;font-size:.72rem;border:1px solid var(--border);color:var(--muted)}
.badge.ok{border-color:rgba(34,197,94,.35);color:#86efac}.badge.pending{border-color:rgba(245,158,11,.35);color:#fde68a}.badge.bad{border-color:rgba(239,68,68,.35);color:#fecaca}
.actions{display:flex;gap:.4rem;flex-wrap:wrap}.actions button{padding:.45rem .65rem;font-size:.74rem}.danger{background:linear-gradient(135deg,#ef4444,#be123c)}.ghost{background:rgba(148,163,184,.1);color:var(--text);border:1px solid var(--border)}
.list{display:grid;gap:.55rem}.list-item,.product-item{display:flex;justify-content:space-between;gap:.8rem;padding:.85rem;border:1px solid var(--border);border-radius:16px;background:rgba(8,13,25,.45)}
.product-list{display:grid;gap:.65rem;max-height:720px;overflow:auto}.product-item{cursor:pointer}.product-item:hover{border-color:rgba(56,189,248,.5)}
.search-row{display:flex;gap:.5rem;min-width:min(520px,100%)}.search-row input{min-width:280px}
.form-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem}
.editor-tabs,.syntax-toolbar{display:flex;gap:.5rem;flex-wrap:wrap;margin:.8rem 0}
.editor-tab,.syntax-toolbar button,.color-tool{background:rgba(148,163,184,.1);border:1px solid var(--border);color:var(--text);border-radius:12px;padding:.65rem .85rem}
.editor-tab.active{background:rgba(56,189,248,.15);border-color:rgba(56,189,248,.4)}
.syntax-textarea{display:none}.syntax-textarea.active{display:block}
.color-tool{display:inline-flex;gap:.5rem;align-items:center;color:var(--muted);font-size:.85rem}.color-tool input{width:42px;height:32px;padding:0;border:0;background:transparent}
.hint{color:var(--muted);font-size:.82rem}
.context-menu{position:fixed;z-index:1000;background:#08111f;border:1px solid var(--border);border-radius:16px;padding:.45rem;box-shadow:0 18px 60px rgba(0,0,0,.45);display:grid;gap:.3rem;min-width:190px}
.context-menu button,.context-menu label{margin:0;background:transparent;border:1px solid transparent;color:var(--text);text-align:left;padding:.6rem;border-radius:10px}
.context-menu button:hover,.context-menu label:hover{background:rgba(56,189,248,.1);border-color:rgba(56,189,248,.2)}
@media (max-width:1100px){.app{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.summary-grid,.grid-2,.grid-products{grid-template-columns:1fr}.topbar{flex-direction:column;align-items:flex-start}.form-grid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.summary-grid,.form-grid{grid-template-columns:1fr}.main{padding:1rem}.search-row{flex-direction:column;width:100%}}

.muted{color:var(--muted);font-size:.82rem}
.invoice-items{display:grid;gap:.45rem;min-width:260px}
.invoice-item{display:grid;grid-template-columns:minmax(150px,1fr) 70px 100px;gap:.5rem;align-items:center;padding:.5rem;border:1px solid rgba(148,163,184,.16);border-radius:12px;background:rgba(8,13,25,.42)}
.invoice-item strong{display:block;font-size:.84rem}.invoice-item span{display:block;color:var(--muted);font-size:.72rem;margin-top:.12rem}
.invoice-total{margin-top:.35rem;padding:.55rem .65rem;border-radius:12px;background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.22);font-weight:800}
.receipt-link{display:inline-flex;align-items:center;gap:.65rem;color:var(--accent);text-decoration:none}
.receipt-link img{width:86px;height:62px;object-fit:cover;border-radius:12px;border:1px solid var(--border);background:#020617}
.receipt-link:hover span{text-decoration:underline}