/* Sąskaitos – dizaino sistema: design-system/MASTER.md (Swiss minimal, tankus) */
:root {
  --primary: #1E3A5F; --on-primary: #FFFFFF; --secondary: #2563EB; --accent: #059669;
  --bg: #F8FAFC; --fg: #0F172A; --card: #FFFFFF; --muted: #F1F3F5; --muted-fg: #475569;
  --border: #E4E7EB; --danger: #DC2626; --warning: #B45309; --ring: #1E3A5F;
  --success-bg: #ECFDF5; --danger-bg: #FEF2F2; --warning-bg: #FFFBEB; --info-bg: #EFF6FF;
  --radius: 6px; --radius-lg: 10px; --shadow: 0 8px 24px rgb(15 23 42 / .12);
  --font: 'Fira Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --sidebar: 232px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --primary: #93B4E0; --on-primary: #0B1424; --secondary: #7AA2F7; --accent: #34D399;
    --bg: #0B1120; --fg: #E5E9F0; --card: #111827; --muted: #1A2233; --muted-fg: #A0AEC0;
    --border: #273244; --danger: #F87171; --warning: #FBBF24; --ring: #93B4E0;
    --success-bg: #0F2A22; --danger-bg: #2A1414; --warning-bg: #2A2110; --info-bg: #13213A;
    color-scheme: dark;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 400 15px/1.5 var(--font); color: var(--fg); background: var(--bg); }
a { color: var(--secondary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; font-weight: 600; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 18px; font-weight: 600; margin: 0 0 12px; }
h3 { font-size: 15px; font-weight: 600; margin: 0 0 8px; }
p { margin: 0 0 8px; }
.num, .money, td.r, th.r { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.muted { color: var(--muted-fg); }
.small { font-size: 13px; }
.icon { width: 18px; height: 18px; flex: none; }
:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

/* Išdėstymas */
.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100dvh; }
.sidebar { background: var(--card); border-right: 1px solid var(--border); padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100dvh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 16px; color: var(--fg); padding: 4px 8px 12px; }
.brand-mark { width: 28px; height: 28px; border-radius: 7px; background: var(--primary); color: var(--on-primary); display: grid; place-items: center; font-size: 14px; }
.company-switch select { width: 100%; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius); color: var(--fg); font-weight: 500; }
.nav a:hover { background: var(--muted); text-decoration: none; }
.nav a[aria-current="page"] { background: var(--muted); color: var(--primary); box-shadow: inset 3px 0 0 var(--primary); }
.nav .badge { margin-left: auto; }
.nav-sep { height: 1px; background: var(--border); margin: 8px 4px; }
.sidebar-foot { margin-top: auto; padding: 8px; font-size: 13px; color: var(--muted-fg); }
.sidebar-foot form { display: inline; }
.main { min-width: 0; }
.topbar { display: none; }
.content { max-width: 1280px; margin: 0 auto; padding: 24px 28px 48px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.page-head .actions { display: flex; gap: 8px; flex-wrap: wrap; }

@media (max-width: 1023px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: 280px; z-index: 50; transform: translateX(-100%); transition: transform .2s ease; box-shadow: var(--shadow); }
  .sidebar.open { transform: none; }
  .topbar { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 40; }
  .content { padding: 16px 16px 40px; }
  body { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* Kortelės ir tinklelis */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px; }
.card + .card, .stack > * + * { margin-top: 16px; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.card-head h2 { margin: 0; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1023px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
.kpi .label { font-size: 13px; color: var(--muted-fg); }
.kpi .value { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 2px; }
.kpi .sub { font-size: 13px; color: var(--muted-fg); }
.kpi.danger .value { color: var(--danger); }

/* Mygtukai */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 36px; padding: 0 14px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--card); color: var(--fg); font: 500 14px/1 var(--font); cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s; }
.btn:hover { background: var(--muted); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: color-mix(in srgb, var(--primary) 88%, #000); }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); }
.btn-danger:hover { background: var(--danger-bg); }
.btn-sm { min-height: 30px; padding: 0 10px; font-size: 13px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
@media (max-width: 1023px) { .btn { min-height: 44px; } .btn-sm { min-height: 36px; } }
.link-btn { background: none; border: 0; padding: 0; color: var(--secondary); font: inherit; cursor: pointer; }

/* Formos */
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field label, .label { font-size: 13px; font-weight: 500; color: var(--muted-fg); }
.req::after { content: " *"; color: var(--danger); }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], input[type=month], input[type=search], input[type=url], select, textarea {
  width: 100%; min-height: 36px; padding: 6px 10px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); color: var(--fg); font: 15px/1.4 var(--font);
}
textarea { min-height: 72px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--ring); outline-offset: 0; border-color: var(--ring); }
input[readonly] { background: var(--muted); }
@media (max-width: 1023px) { input, select, textarea { min-height: 44px; font-size: 16px; } }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
.check input { width: 18px; height: 18px; }
.help { font-size: 13px; color: var(--muted-fg); }
.field-error { font-size: 13px; color: var(--danger); margin: 0; }
.form-grid { display: grid; gap: 12px 16px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.span-2 { grid-column: span 2; } .span-3 { grid-column: span 3; } .span-4 { grid-column: span 4; } .span-6 { grid-column: span 6; } .span-8 { grid-column: span 8; } .span-12 { grid-column: span 12; }
@media (max-width: 760px) { .form-grid > * { grid-column: span 12; } }
.form-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; margin-top: 16px; }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { font-weight: 600; font-size: 15px; margin-bottom: 12px; padding: 0; float: left; width: 100%; }
fieldset > *:not(legend) { clear: both; }
#t-vat-rows { display: block; padding: 0; }

/* Lentelės */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 500; font-size: 13px; color: var(--muted-fg); background: var(--muted); padding: 8px 12px; position: sticky; top: 0; white-space: nowrap; }
td { padding: 9px 12px; border-top: 1px solid var(--border); vertical-align: middle; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: color-mix(in srgb, var(--muted) 60%, transparent); }
tfoot td { font-weight: 600; background: var(--muted); }
.empty { padding: 32px 16px; text-align: center; color: var(--muted-fg); }

/* Ženkliukai */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 500; white-space: nowrap; border: 1px solid transparent; }
.badge-muted { background: var(--muted); color: var(--muted-fg); border-color: var(--border); }
.badge-info { background: var(--info-bg); color: var(--secondary); }
.badge-success { background: var(--success-bg); color: var(--accent); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-cancelled { background: var(--muted); color: var(--muted-fg); text-decoration: line-through; }

/* Pranešimai */
.flash { display: flex; gap: 10px; align-items: flex-start; padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px; border: 1px solid; font-size: 14px; }
.flash-success { background: var(--success-bg); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.flash-error { background: var(--danger-bg); border-color: color-mix(in srgb, var(--danger) 35%, transparent); }
.flash-info { background: var(--info-bg); border-color: color-mix(in srgb, var(--secondary) 30%, transparent); }

/* Filtrai ir skirtukai */
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 12px; }
.filters .field { min-width: 140px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; overflow-x: auto; }
.tabs a { padding: 8px 12px; color: var(--muted-fg); font-weight: 500; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs a[aria-current="page"] { color: var(--primary); border-color: var(--primary); }
.tabs a:hover { text-decoration: none; color: var(--fg); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { padding: 4px 10px; border: 1px solid var(--border); border-radius: 999px; font-size: 13px; color: var(--fg); background: var(--card); }
.chip[aria-current="page"] { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.chip:hover { text-decoration: none; }

/* Sąskaitos forma */
.lines td { padding: 6px 6px; vertical-align: top; }
.lines input, .lines select { min-height: 34px; padding: 4px 8px; }
.lines .c-name { min-width: 240px; }
.lines .c-qty { width: 86px; } .lines .c-unit { width: 96px; } .lines .c-price { width: 110px; } .lines .c-disc { width: 70px; } .lines .c-vat { width: 88px; } .lines .c-sum { width: 110px; } .lines .c-x { width: 40px; }
.lines .sum-cell { padding-top: 13px; }
.totals { margin-left: auto; width: min(360px, 100%); font-variant-numeric: tabular-nums; }
.totals div { display: flex; justify-content: space-between; padding: 4px 0; }
.totals .grand { font-size: 18px; font-weight: 600; border-top: 1px solid var(--border); margin-top: 4px; padding-top: 8px; }
.suggest { position: relative; }
.suggest-list { position: absolute; left: 0; right: 0; top: 100%; z-index: 30; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); max-height: 280px; overflow-y: auto; margin-top: 2px; padding: 4px; list-style: none; }
.suggest-list li { padding: 8px 10px; border-radius: 4px; cursor: pointer; }
.suggest-list li[aria-selected="true"], .suggest-list li:hover { background: var(--muted); }
.suggest-list small { color: var(--muted-fg); display: block; }

/* Dokumento peržiūra */
.doc-meta { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; font-size: 14px; }
.doc-meta dt { color: var(--muted-fg); }
.doc-meta dd { margin: 0; }
.pdf-frame { width: 100%; height: 760px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; }
@media (max-width: 1023px) { .pdf-frame { height: 480px; } }
.layout-2 { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; align-items: start; }
@media (max-width: 1100px) { .layout-2 { grid-template-columns: 1fr; } }
details.inline > summary { cursor: pointer; color: var(--secondary); list-style: none; }
details.inline > summary::-webkit-details-marker { display: none; }
details.inline[open] > summary { margin-bottom: 8px; }

/* Juosta (6 mėn.) */
.bars { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; align-items: end; height: 140px; padding-top: 8px; }
.bar { display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; }
.bar span.fill { width: 100%; max-width: 44px; background: var(--primary); border-radius: 4px 4px 0 0; min-height: 2px; }
.bar small { font-size: 12px; color: var(--muted-fg); }
.bar b { font-size: 12px; font-weight: 500; font-variant-numeric: tabular-nums; }

/* Svečio puslapiai */
.guest { min-height: 100dvh; display: grid; place-items: center; padding: 24px 16px; }
.guest-card { width: min(420px, 100%); }
.guest-card .brand { justify-content: center; padding-bottom: 20px; }

dialog { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; background: var(--card); color: var(--fg); box-shadow: var(--shadow); width: min(480px, calc(100% - 32px)); }
dialog::backdrop { background: rgb(15 23 42 / .45); }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.kv { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-top: 1px solid var(--border); font-size: 14px; }
.kv:first-child { border-top: 0; }
code.copy { display: block; padding: 8px 10px; background: var(--muted); border-radius: var(--radius); font-size: 13px; overflow-wrap: anywhere; }
.steps { margin: 0; padding-left: 20px; }
.steps li { margin-bottom: 6px; }
@media print { .sidebar, .topbar, .page-head .actions, .form-actions { display: none !important; } .shell { display: block; } }