:root {
  --gold: #b8960c;
  --dark: #1a1a2e;
  --mid: #16213e;
  --card: #0f3460;
  --accent: #e94560;
  --text: #eaeaea;
  --muted: #8892a4;
  --border: #2a3a5c;
  --green: #22c55e;
  --red: #ef4444;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', sans-serif; background: var(--dark); color: var(--text); min-height: 100vh; }

/* NAV */
.nav { background: var(--mid); border-bottom: 2px solid var(--gold); padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; }
.nav-brand { font-size: 1.1rem; font-weight: 700; color: var(--gold); line-height: 1.2; }
.nav-brand span { display: block; font-size: 0.7rem; color: var(--muted); font-weight: 400; }
.nav-btns { display: flex; gap: 8px; align-items: center; }
.btn { padding: 8px 14px; border-radius: 8px; border: none; cursor: pointer; font-size: 0.82rem; font-weight: 600; transition: opacity .2s; }
.btn:active { opacity: .7; }
.btn-gold { background: var(--gold); color: #000; }
.btn-outline { background: transparent; border: 1.5px solid var(--gold); color: var(--gold); }
.btn-green { background: var(--green); color: #000; }
.btn-red { background: var(--red); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 0.75rem; }
.btn-wa { background: #25d366; color: #fff; display: flex; align-items: center; gap: 6px; }
.btn-wa svg { width: 16px; height: 16px; }

/* TABS */
.tabs { display: flex; background: var(--mid); border-bottom: 1px solid var(--border); overflow-x: auto; }
.tab { padding: 12px 20px; font-size: 0.85rem; font-weight: 600; color: var(--muted); border-bottom: 3px solid transparent; cursor: pointer; white-space: nowrap; }
.tab.active { color: var(--gold); border-bottom-color: var(--gold); }

/* PAGES */
.page { display: none; padding: 16px; }
.page.active { display: block; }

/* CARDS */
.card { background: var(--mid); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 14px; }
.card-title { font-size: 0.8rem; font-weight: 700; color: var(--gold); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 12px; }

/* FORM */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-full { grid-column: 1 / -1; }
label { display: block; font-size: 0.75rem; color: var(--muted); margin-bottom: 4px; }
input, select, textarea { width: 100%; background: var(--dark); border: 1.5px solid var(--border); border-radius: 8px; padding: 9px 11px; color: var(--text); font-size: 0.85rem; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--gold); }
select option { background: var(--dark); }

/* ITEMS TABLE */
.items-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.items-table { min-width: 900px; width: 100%; border-collapse: collapse; font-size: 0.78rem; }
.items-table th { background: var(--card); color: var(--gold); padding: 8px 6px; text-align: center; font-size: 0.72rem; white-space: nowrap; border: 1px solid var(--border); }
.items-table td { padding: 4px 3px; border: 1px solid var(--border); text-align: center; vertical-align: middle; }
.items-table input, .items-table select { background: #0d1b35; border: 1px solid #2a3a5c; border-radius: 4px; padding: 5px 4px; font-size: 0.75rem; color: var(--text); }
.items-table .num { width: 70px; }
.items-table .wide { width: 130px; }
.items-table .xwide { min-width: 170px; }
.row-total { color: var(--green); font-weight: 700; }
.row-del { color: var(--red); cursor: pointer; font-size: 1.1rem; padding: 4px 8px; background: none; border: none; }

/* TOTALS */
.totals-box { background: var(--card); border-radius: 10px; padding: 14px; text-align: right; }
.totals-box .grand { font-size: 1.4rem; font-weight: 800; color: var(--gold); margin-top: 8px; }
.totals-row { display: flex; justify-content: space-between; font-size: 0.82rem; padding: 3px 0; border-bottom: 1px solid var(--border); }

/* LOGIN */
.login-box { background: var(--mid); border: 1px solid var(--border); border-radius: 14px; padding: 28px 24px; width: 100%; max-width: 340px; }
.login-brand { text-align: center; font-size: 1.2rem; font-weight: 700; color: var(--gold); margin-bottom: 20px; }
.login-brand span { display: block; font-size: 0.75rem; color: var(--muted); font-weight: 400; margin-top: 2px; }
.login-box label { margin-top: 10px; }
.login-error { color: var(--red); font-size: 0.78rem; min-height: 1.1em; margin-top: 8px; }

/* QUOTES LIST */
.quote-card { background: var(--mid); border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-bottom: 10px; cursor: pointer; }
.quote-card:active { background: var(--card); }
.quote-ref { font-weight: 700; color: var(--gold); font-size: 0.9rem; }
.quote-meta { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }
.quote-amount { font-size: 1rem; font-weight: 700; color: var(--green); float: right; margin-top: -18px; }
.empty-state { text-align: center; color: var(--muted); padding: 40px 20px; font-size: 0.9rem; }

/* PRINT PREVIEW */
.preview-box { background: #fff; color: #000; border-radius: 8px; padding: 20px; font-size: 0.8rem; line-height: 1.5; }
.preview-box table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: 0.72rem; }
.preview-box th { background: #1a1a2e; color: #fff; padding: 5px; }
.preview-box td { padding: 4px 5px; border: 1px solid #ccc; }
.preview-header { text-align: center; margin-bottom: 16px; }
.preview-header h2 { font-size: 1.1rem; color: #1a1a2e; }
.preview-header p { font-size: 0.75rem; color: #555; }
.preview-title { font-size: 1rem; font-weight: 800; text-align: center; background: #1a1a2e; color: #fff; padding: 6px; border-radius: 4px; margin: 10px 0; }
.preview-info { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 10px 0; font-size: 0.78rem; }
.preview-info .box { border: 1px solid #ccc; border-radius: 4px; padding: 8px; }
.tc-list { font-size: 0.72rem; color: #555; }
.tc-list li { margin-bottom: 3px; }
.sig-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; font-size: 0.78rem; }
.sig-box { border-top: 1px solid #999; padding-top: 6px; text-align: center; }

/* PRINT */
@media print {
  body { background: #fff !important; color: #000 !important; }
  .no-print { display: none !important; }
  .preview-box { padding: 0; }
}
@media (max-width: 500px) {
  .form-grid { grid-template-columns: 1fr; }
  .nav-brand { font-size: 0.95rem; }
}