:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #1d232b;
  --muted: #687280;
  --border: #dde1e6;
  --primary: #1f5fae;
  --primary-text: #ffffff;
  --danger: #b42318;
  --ok: #1a7f37;
  --warn: #9a6700;
  --radius: 8px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.45 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: .2rem 0; }
h2 { font-size: 1.1rem; margin: 0 0 .8rem; }
.muted { color: var(--muted); }

.topbar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1rem;
  padding: .7rem 16px; background: #17324f; color: #fff;
}
.topbar a, .topbar .link { color: #fff; }
.topbar .brand { font-weight: 600; }
.topbar nav { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem 1rem; }
.topbar .who { opacity: .75; }

.container { max-width: 1200px; margin: 0 auto; padding: 1rem 16px 5rem; }
.page-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .5rem; margin-bottom: 1rem; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; margin-bottom: 1rem; }
.card.login { max-width: 380px; margin: 10vh auto; }

.btn {
  display: inline-block; padding: .5rem .9rem; border-radius: 6px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font: inherit; cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; border-color: #b8bfc8; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn.danger { color: var(--danger); border-color: #f0b8b3; }
.btn.danger:is(button) { background: var(--danger); color: #fff; }
.btn.wide { width: 100%; }
.link { background: none; border: 0; padding: 0; font: inherit; cursor: pointer; color: var(--primary); }
form.inline { display: inline; }

.actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: flex-start; margin-bottom: 1rem; }
.actions.sticky {
  position: sticky; bottom: 0; background: var(--bg); padding: .7rem 0; margin: 0;
  border-top: 1px solid var(--border);
}

.comment-action { display: inline-block; }
.comment-action summary { list-style: none; }
.comment-action summary::-webkit-details-marker { display: none; }
.comment-action[open] form {
  margin-top: .5rem; padding: .7rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); min-width: min(320px, 90vw);
}

input, select, textarea {
  width: 100%; padding: .45rem .55rem; border: 1px solid var(--border); border-radius: 6px;
  font: inherit; background: #fff; color: var(--text);
}
input[type=checkbox] { width: auto; }
label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: .6rem; }
label.check { display: flex; gap: .4rem; align-items: center; color: var(--text); }
label.check.small { font-size: .85rem; margin: 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0 1rem; }
.grid.three { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
.field { margin-bottom: .7rem; }
.field label { margin-bottom: .2rem; }
.field.span2 { grid-column: span 2; }
.has-error input, .has-error select, .has-error textarea { border-color: var(--danger); }
.error, .errorlist { color: var(--danger); font-size: .85rem; }
.errorlist { padding-left: 1rem; }

.item { border: 1px dashed var(--border); border-radius: var(--radius); padding: .7rem; margin-bottom: .7rem; }
.item.deleted { opacity: .45; }
.item-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; margin-bottom: .5rem; }

.tabs { display: flex; gap: 1rem; border-bottom: 1px solid var(--border); margin-bottom: .8rem; }
.tabs a { padding: .4rem 0; color: var(--muted); }
.tabs a.active { color: var(--text); border-bottom: 2px solid var(--primary); font-weight: 600; }
.count { background: var(--primary); color: #fff; border-radius: 10px; padding: 0 .45rem; font-size: .8rem; }

.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.filters input, .filters select { width: auto; flex: 1 1 160px; }

.table-wrap { overflow-x: auto; }
table.list { width: 100%; border-collapse: collapse; background: var(--surface); }
table.list th, table.list td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
table.list th { font-size: .8rem; text-transform: uppercase; letter-spacing: .02em; color: var(--muted); }
.num { text-align: right !important; white-space: nowrap; }

.status { display: inline-block; font-size: .8rem; font-weight: 600; padding: .1rem .5rem; border-radius: 10px; background: #e8ebef; color: #3b4450; white-space: nowrap; vertical-align: middle; }
.st-submitted, .st-registered { background: #ddeafb; color: #174a85; }
.st-returned { background: #fff1d6; color: var(--warn); }
.st-ordered, .st-partially_received { background: #efe4fb; color: #5b2a91; }
.st-received, .st-closed { background: #dcf3e2; color: var(--ok); }
.st-cancelled { background: #fbe1df; color: var(--danger); }
.badge { font-size: .75rem; font-weight: 600; padding: .05rem .4rem; border-radius: 4px; vertical-align: middle; }
.badge.prio-urgent { background: #fff1d6; color: var(--warn); }
.badge.prio-emergency { background: #fbe1df; color: var(--danger); }

.flash { padding: .6rem .8rem; border-radius: 6px; margin-bottom: .8rem; background: #e8ebef; }
.flash-success { background: #dcf3e2; color: #0f5323; }
.flash-error { background: #fbe1df; color: #7a1a12; }
.flash-info { background: #ddeafb; color: #174a85; }

dl.details { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1rem; margin: 0; }
dl.details dt { color: var(--muted); }
dl.details dd { margin: 0; }

.history { list-style: none; padding: 0; margin: 0; }
.history li { padding: .4rem 0; border-bottom: 1px solid var(--border); }
.history .comment { margin: .3rem 0 0 1rem; padding-left: .6rem; border-left: 3px solid var(--border); }
.empty { color: var(--muted); padding: 2rem 0; text-align: center; }

/* Телефон: таблиці перетворюються на картки */
@media (max-width: 720px) {
  .field.span2 { grid-column: auto; }
  dl.details { grid-template-columns: 1fr; }
  dl.details dd { margin-bottom: .4rem; }
  table.list thead { display: none; }
  table.list tr { display: block; border-bottom: 1px solid var(--border); padding: .4rem 0; }
  table.list td { display: flex; justify-content: space-between; gap: 1rem; border: 0; padding: .2rem .6rem; }
  table.list td::before { content: attr(data-label); color: var(--muted); font-size: .85rem; }
  .num { text-align: right; }
}

/* FR-02 */
h3 { font-size: 1rem; margin: 1.2rem 0 .5rem; }
.small { font-size: .82rem; }
.nowrap { white-space: nowrap; }
.field.span-all { grid-column: 1 / -1; }
.field ul { list-style: none; padding: 0; margin: .2rem 0 0; display: flex; flex-wrap: wrap; gap: .3rem 1.2rem; }
.field ul label { display: flex; gap: .4rem; align-items: center; color: var(--text); margin: 0; }
table.offers tr.selected td { background: #f0f6ff; }
.badge.chosen { background: #ddeafb; color: #174a85; }
.compl { font-weight: 600; font-size: .85rem; }
.compl-full { color: var(--ok); }
.compl-partial { color: var(--warn); }
.compl-none { color: var(--danger); }
.check-card { border-left: 4px solid var(--primary); }
.approve-card { border: 2px solid var(--primary); }
.problems { margin: .3rem 0 0; padding-left: 1.2rem; color: #7a1a12; }
.problems li { margin-bottom: .2rem; }
.ok-text { color: var(--ok); font-weight: 600; }
.danger-text { color: var(--danger); }
ul.plain { padding-left: 1.1rem; margin: 0; }
.st-quoting { background: #fff1d6; color: var(--warn); }
.st-pending_approval { background: #fde7f3; color: #8a1c5c; }
.st-approved { background: #dcf3e2; color: var(--ok); }
.st-step-approved { background: #dcf3e2; color: var(--ok); }
.st-step-pending { background: #fff1d6; color: var(--warn); }
.print-links { margin-left: auto; display: inline-flex; gap: .5rem; }

/* Вкладки розділів у шапці */
.topbar nav a.on { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 2px; }
.cat-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: .7rem; margin-bottom: 1.2rem; }
.cat-card { display: flex; flex-direction: column; gap: .3rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .8rem 1rem; color: var(--text); }
.cat-card:hover { border-color: var(--primary); text-decoration: none; }
.cat-card .count { align-self: flex-start; }
.behalf { border-left: 4px solid var(--warn); }
.remain { font-size: .82rem; }
.over { color: var(--danger); font-weight: 600; }
table.list tr.subtotal td { background: #f3f5f8; font-weight: 600; }
table.list tr.site-row td { background: #ddeafb; font-weight: 700; color: #174a85; }
.mode-tabs { margin-bottom: .6rem; }
table.materials-edit td { min-width: 90px; }
table.materials-edit input[type=checkbox] { margin-top: .6rem; }
table.materials-edit td:first-child, table.materials-edit td:nth-child(2) { min-width: 120px; }

/* Демо-режим */
.demo-banner { background: #fff1d6; color: var(--warn); text-align: center; font-size: .85rem; padding: .3rem 16px; }
.demo-switch { background: rgba(255,255,255,.15); padding: .15rem .55rem; border-radius: 5px; }
.demo-entry { margin-top: .6rem; text-align: center; }
.demo-users { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: .6rem; }
.demo-user { display: flex; justify-content: space-between; align-items: center; gap: .8rem;
  border: 1px solid var(--border); border-radius: var(--radius); padding: .6rem .8rem; }