:root {
  --font: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --navy: #161F3B;
  --navy-2: #022361;
  --blue: #3293FF;
  --blue-dark: #2421B0;
  --violet: #734BEA;
  --purple: #4729A2;
  --cyan: #00A0E3;
  --lightblue: #D1E5FF;
  --gradient: linear-gradient(135deg, #3293FF 0%, #734BEA 41%, #2421B0 100%);

  --bg: #F3F5FA;
  --surface: #FFFFFF;
  --text: #1B2238;
  --muted: #6B7390;
  --border: #DEE2EE;
  --danger: #D93A4A;
  --danger-bg: #FDECEE;
  --success: #1E8E5A;
  --success-bg: #E6F6EE;
  --radius: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { font-weight: 500; line-height: 1.25; margin: 0 0 .6em; }
h1 { font-size: 26px; }
h2 { font-size: 19px; }
strong, b { font-weight: 500; }

/* Horní lišta */
.topbar {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 0 32px;
  height: 64px;
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: var(--gradient);
}
.topbar-logo img { height: 30px; display: block; }
.topbar-nav { display: flex; gap: 4px; flex: 1; }
.nav-item {
  color: #fff;
  padding: 8px 16px;
  border-radius: 30px;
  font-weight: 400;
  opacity: .85;
}
.nav-item:hover { opacity: 1; text-decoration: none; background: rgba(255,255,255,.08); }
.nav-item.is-active { opacity: 1; background: rgba(50,147,255,.25); }
.nav-item.is-disabled { opacity: .35; cursor: default; }
.topbar-menu { display: flex; align-items: center; gap: 32px; flex: 1; min-width: 0; }
.nav-toggle { display: none; }
.topbar-user { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.topbar-user form { margin: 0; }
.topbar-email { opacity: .8; }

.container { max-width: 1200px; margin: 0 auto; padding: 32px; }
.container-wide { max-width: 1760px; }

/* Tlačítka – podle webhit.cz (zaoblená, modrá) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: inherit;
  font-weight: 500;
  font-size: 14px;
  line-height: 20px;
  padding: 9px 22px;
  border-radius: 30px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; border-color: var(--blue); color: var(--blue); }
.btn-primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn-primary:hover { background: #1d7ff0; border-color: #1d7ff0; color: #fff; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); color: #fff; background: var(--danger); }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { background: #fff; color: var(--navy); border-color: #fff; }
.btn-sm { padding: 5px 14px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-icon { padding: 6px 10px; border-radius: 6px; }

/* Hlavička stránky */
.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.page-head h1 { margin: 0; }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}
.panel > h2 { margin-bottom: 16px; }

/* Hlášky */
.flash {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(30,142,90,.25);
}
.flash-error { background: var(--danger-bg); color: var(--danger); border-color: rgba(217,58,74,.25); }

/* Tabulky */
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
table.list { width: 100%; border-collapse: collapse; }
table.list th, table.list td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.list th { font-weight: 500; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; background: #FAFBFD; }
table.list tr:last-child td { border-bottom: 0; }
table.list tbody tr:hover td { background: #F7F9FD; }
table.list .num { text-align: right; white-space: nowrap; }
table.list .actions { text-align: right; white-space: nowrap; }
table.list .actions form { display: inline; }
.muted { color: var(--muted); }
.empty { padding: 48px 16px; text-align: center; color: var(--muted); }
.badge { display: inline-block; font-size: 12px; padding: 2px 10px; border-radius: 20px; background: var(--lightblue); color: var(--navy-2); font-weight: 400; }
.badge-off { background: #ECEEF3; color: var(--muted); }

/* Formuláře */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 24px; }
.form-grid .span-2 { grid-column: span 2; }
.field { display: block; margin-bottom: 0; }
.field > span { display: block; font-size: 13px; font-weight: 400; color: var(--muted); margin-bottom: 6px; }
.field .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], select, textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  font-weight: 300;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 12px;
  transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 80px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(50,147,255,.15); }
.checkbox { display: flex; align-items: center; gap: 8px; }
.form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; flex-wrap: wrap; }
.errors { margin: 0 0 20px; padding: 12px 16px 12px 36px; background: var(--danger-bg); color: var(--danger); border-radius: var(--radius); border: 1px solid rgba(217,58,74,.25); }

/* Editor Quill */
.editor-wrap .ql-toolbar.ql-snow { border-color: var(--border); border-radius: 6px 6px 0 0; font-family: var(--font); background: #FAFBFD; }
.editor-wrap .ql-container.ql-snow { border-color: var(--border); border-radius: 0 0 6px 6px; font-family: var(--font); font-size: 15px; }
.editor-wrap .ql-editor { min-height: 220px; line-height: 1.6; }

/* Položky nabídky */
.items-table { width: 100%; border-collapse: collapse; }
.items-table th { font-weight: 500; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; text-align: left; padding: 0 8px 8px; }
.items-table td { padding: 8px 4px; vertical-align: top; border-top: 1px solid var(--border); }
.items-table input, .items-table select, .items-table textarea { padding: 5px 7px; font-size: 14px; }
.items-table select { padding-right: 2px; }
.items-table .col-qty { width: 60px; }
.items-table .col-unit { width: 68px; }
.items-table .col-price { width: 72px; }
.items-table .col-vat { width: 68px; }
.items-table .col-total { width: 130px; text-align: right; }
.items-table .col-tools { width: 92px; text-align: right; white-space: nowrap; }
.items-table td.col-total { padding-top: 13px; font-weight: 400; white-space: nowrap; }
.items-table input.num { text-align: right; }
.items-table textarea { min-height: 42px; margin-top: 4px; }
.items-empty td { text-align: center; color: var(--muted); padding: 24px; }
.items-footer { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin-top: 16px; flex-wrap: wrap; }
.totals { min-width: 300px; }
.totals div { display: flex; justify-content: space-between; gap: 24px; padding: 4px 0; }
.totals .grand { border-top: 2px solid var(--navy); margin-top: 6px; padding-top: 10px; font-weight: 500; font-size: 18px; }

/* Přihlášení */
body.bare { background: var(--gradient); min-height: 100vh; }
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--navy);
  color: #fff;
  border-radius: 12px;
  padding: 40px 36px;
  box-shadow: 0 30px 80px rgba(10, 10, 60, .35);
}
.login-logo { height: 36px; display: block; margin-bottom: 32px; }
.login-card h1 { font-size: 22px; font-weight: 400; margin-bottom: 24px; }
.login-card .field { margin-bottom: 16px; }
.login-card .field > span { color: rgba(255,255,255,.7); }
.login-card input { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.18); color: #fff; }
.login-card input:focus { border-color: var(--blue); }
.login-card .btn { margin-top: 8px; padding: 12px; }

@media (max-width: 760px) {
  .container { padding: 20px 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .span-2 { grid-column: auto; }
  .items-table thead { display: none; }
  .items-table, .items-table tbody, .items-table tr, .items-table td { display: block; width: 100% !important; }
  .items-table tr { border-top: 1px solid var(--border); padding: 8px 0; }
  .items-table td { border: 0; padding: 4px 0; text-align: left !important; }
  .items-table td[data-label]::before { content: attr(data-label); display: block; font-size: 12px; color: var(--muted); }
}

.search { margin: 0; }
.search input { width: 260px; border-radius: 30px; padding: 8px 16px; }
@media (max-width: 760px) { .search input { width: 100%; } }
.totals .js-vat-lines { display: block; padding: 0; color: var(--muted); }

/* Faktury */
.form-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-grid.inner { gap: 0 16px; }
.static-value { padding: 9px 0; font-weight: 400; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.panel-head h2 { margin: 0; }
.panel-note { margin: -8px 0 16px; font-size: 14px; }
.panel .form-actions { margin-top: 20px; }
.h1-sub { font-size: 18px; font-weight: 300; margin-left: 8px; }
.page-actions form { margin: 0; display: inline; }

.lookup { position: relative; }
.lookup-list {
  position: absolute; left: 0; right: 0; top: 100%; z-index: 20; margin-top: 4px;
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 12px 32px rgba(22, 31, 59, .14); max-height: 360px; overflow-y: auto;
}
.lookup-head { padding: 8px 14px 4px; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 500; }
.lookup-item { padding: 8px 14px; cursor: pointer; border-top: 1px solid #F0F2F7; }
.lookup-item.is-active, .lookup-item:hover { background: #EEF5FF; }
.lookup-name { font-weight: 400; }
.lookup-meta { font-size: 13px; color: var(--muted); }
.lookup-empty { padding: 10px 14px; color: var(--muted); font-size: 14px; }
.lookup-more { padding: 10px 14px; border-top: 1px solid var(--border); color: var(--blue); cursor: pointer; font-size: 14px; }
.lookup-more:hover { background: #EEF5FF; }

.invoice-summary { display: flex; flex-wrap: wrap; gap: 12px 40px; margin-bottom: 16px; padding: 16px 24px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.invoice-summary span { display: block; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.pdf-frame { width: 100%; height: 1100px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }

@media (max-width: 760px) {
  .form-grid.cols-3 { grid-template-columns: 1fr; }
  .pdf-frame { height: 70vh; }
}

/* Přehled faktur: úhrady */
.text-danger { color: var(--danger); }
.unpaid-box { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; }
.unpaid-item {
  flex: 1 1 260px; display: flex; flex-direction: column; gap: 2px;
  padding: 16px 22px; background: var(--surface); border: 1px solid var(--border);
  border-left: 4px solid var(--blue); border-radius: var(--radius);
}
.unpaid-label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 500; }
.unpaid-sum { font-size: 26px; font-weight: 500; color: var(--navy); line-height: 1.3; }
.unpaid-meta { font-size: 14px; color: var(--muted); }

table.list td.amount { padding: 6px 8px; }
table.list td.amount.is-paid, table.list tbody tr:hover td.amount.is-paid { background: var(--success-bg); }
table.list td.amount.is-paid .amount-btn { color: var(--success); }
table.list td.amount.is-overdue, table.list tbody tr:hover td.amount.is-overdue { background: var(--danger-bg); }
table.list td.amount.is-overdue .amount-btn { color: var(--danger); }
.amount-btn {
  font: inherit; color: inherit; background: none; border: 0; cursor: pointer;
  padding: 6px 8px; border-radius: 6px; white-space: nowrap;
}
.amount-btn:hover { background: rgba(50, 147, 255, .12); }

.modal {
  border: 0; border-radius: 12px; padding: 28px; width: min(500px, calc(100vw - 32px));
  box-shadow: 0 30px 80px rgba(10, 10, 60, .3); color: var(--text); font-family: var(--font);
}
.modal::backdrop { background: rgba(22, 31, 59, .45); }
.modal h2 { margin-bottom: 6px; }
.modal p { margin: 0 0 18px; }
.modal-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; align-items: center; }
.modal [hidden] { display: none; }
.modal { overflow: visible; }
.modal-actions .spacer { flex: 1; }

/* Přehled nabídek */
.nowrap { white-space: nowrap; }
table.list th.col-client, table.list td.col-client { min-width: 220px; }
table.list .actions .btn-icon { padding: 6px 8px; }
table.list .actions { width: 1%; }
.icon { display: block; }

/* ---------- Responzivní rozhraní ---------- */
.pdf-mobile { display: none; }
@media (max-width: 1000px) {
  .container { padding: 24px 20px; }
  .topbar { padding: 0 20px; gap: 20px; }
  .topbar-menu { gap: 20px; }
  .form-grid.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1000px) {
  table.list th, table.list td { padding: 10px 10px; }
}

@media (max-width: 900px) {
  /* Přehledy jako karty */
  .table-wrap { overflow: visible; background: transparent; border: 0; }
  table.list, table.list tbody, table.list tr, table.list td { display: block; width: 100%; }
  table.list thead { display: none; }
  table.list tr {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 12px 16px; margin-bottom: 10px;
  }
  table.list tbody td {
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    border: 0; padding: 4px 0; text-align: right; min-width: 0 !important; white-space: normal;
  }
  table.list td::before { content: attr(data-label); color: var(--muted); font-size: 13px; text-align: left; flex: 0 0 auto; }
  table.list td[data-label=""]::before { content: none; }
  table.list td:first-child { justify-content: flex-start; text-align: left; font-size: 16px; padding-bottom: 6px; }
  table.list td:first-child::before { content: none; }
  table.list td.actions { justify-content: flex-end; padding-top: 10px; margin-top: 6px; border-top: 1px solid var(--border); width: 100%; }
  table.list td.actions::before { content: none; }
  table.list tbody tr:hover td { background: transparent; }
  table.list td.amount { padding: 2px 0; background: transparent !important; }
  table.list td.amount .amount-btn { padding: 4px 10px; margin-right: -10px; }
  table.list td.amount.is-paid .amount-btn { background: var(--success-bg); }
  table.list td.amount.is-overdue .amount-btn { background: var(--danger-bg); }
  .empty { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }

}

@media (max-width: 760px) {
  /* Horní lišta: logo + tlačítko menu, menu se rozbalí pod lištu */
  .topbar { height: 56px; padding: 0 16px; justify-content: space-between; }
  .topbar-logo img { height: 26px; }
  .nav-toggle {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 42px; height: 42px; padding: 0 10px; margin-right: -8px;
    background: transparent; border: 0; border-radius: 8px; cursor: pointer;
  }
  .nav-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; transition: transform .2s, opacity .2s; }
  .topbar.is-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .topbar.is-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .topbar.is-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .topbar-menu {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--navy); padding: 8px 16px 16px; box-shadow: 0 16px 30px rgba(10, 10, 60, .3);
  }
  .topbar.is-open .topbar-menu { display: flex; }
  .topbar-nav { flex-direction: column; gap: 2px; }
  .nav-item { padding: 12px 14px; border-radius: 8px; }
  .topbar-user { justify-content: space-between; border-top: 1px solid rgba(255,255,255,.12); margin-top: 10px; padding-top: 14px; }
  .topbar-email { display: inline; }

  /* Hlavička stránky a akce */
  h1 { font-size: 22px; }
  .page-head { flex-direction: column; align-items: stretch; margin-bottom: 18px; }
  .page-actions { width: 100%; }
  .page-actions .search { flex: 1 1 100%; }
  .page-actions .btn, .page-actions form:not(.search) { flex: 1 1 auto; }
  .page-actions form:not(.search) .btn { width: 100%; }
  .h1-sub { display: block; margin: 4px 0 0; font-size: 16px; }
  .panel { padding: 18px 16px; }
  .panel-head { flex-wrap: wrap; }

  /* Formuláře */
  .form-grid.cols-3 { grid-template-columns: 1fr; }
  .form-grid.inner { grid-template-columns: 1fr 1fr; }
  .form-actions { flex-direction: column-reverse; }
  .form-actions .btn { width: 100%; }
  .items-footer { flex-direction: column; align-items: stretch; }
  .totals { min-width: 0; }

  /* Položky: množství, jednotka, cena a DPH ve dvou sloupcích */
  .items-table tr.item-row { display: grid; grid-template-columns: 1fr 1fr; column-gap: 12px; padding: 12px 0; }
  .items-table tr.item-row td { width: auto !important; }
  .items-table tr.item-row td:first-child, .items-table td.col-total, .items-table td.col-tools { grid-column: 1 / -1; }
  .items-table td.col-total { display: flex; justify-content: space-between; padding-top: 8px !important; }
  .items-table td.col-total::before { display: inline; }
  .items-table td.col-tools { text-align: right !important; }

  /* Detail faktury: PDF v iframe mobilní prohlížeče neumí, nabídneme odkaz */
  .invoice-summary { padding: 14px 16px; gap: 10px 24px; }
  .pdf-frame { display: none; }
  .pdf-mobile { display: flex; }

  .modal { padding: 22px 18px; }
  .modal-actions .btn { flex: 1 1 auto; }
  .modal-actions .spacer { display: none; }

  .login-card { padding: 32px 24px; }
}
.invoice-summary span.text-danger { display: inline; text-transform: none; letter-spacing: 0; font-size: inherit; color: var(--danger); }
@media (min-width: 601px) and (max-width: 900px) {
  /* Na tabletu karty ve dvou sloupcích */
  table.list tbody { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  table.list tbody tr { margin-bottom: 0; }
}

/* Webhosting */
.paid-to { display: inline-block; padding: 2px 8px; margin: -2px -8px; border-radius: 6px; }
.paid-to.is-expiring { background: var(--danger-bg); color: var(--danger); font-weight: 400; }
.form-delete { margin-top: 24px; text-align: left; }
@media (max-width: 900px) {
  .paid-to { margin: -2px 0; }
}

/* Dashboard */
.dash-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-bottom: 20px; }
.dash-tile {
  display: flex; flex-direction: column; gap: 2px; padding: 18px 22px;
  background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--blue);
  border-radius: var(--radius); color: var(--text); transition: box-shadow .15s, transform .15s;
}
.dash-tile:hover { text-decoration: none; box-shadow: 0 8px 24px rgba(22, 31, 59, .08); transform: translateY(-1px); }
.dash-tile.is-alert { border-left-color: var(--danger); }
.dash-label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 500; }
.dash-value { font-size: 28px; font-weight: 500; color: var(--navy); line-height: 1.3; }
.dash-meta { font-size: 14px; color: var(--muted); }
.dash-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 32px; align-items: start; }
.dash-section { min-width: 0; }
.dash-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.dash-head h2 { margin: 0; }
.dash-head a { font-size: 14px; white-space: nowrap; }
@media (max-width: 1399px) {
  .dash-grid { grid-template-columns: 1fr; }
}