/* ═══════════════════════════════════════════════
   Správa faktur – hlavní stylesheet
   Fonty: DM Serif Display + DM Sans
   Schéma: přírodní/zemité tóny, akcent tmavě zelená
═══════════════════════════════════════════════ */

/* ── Proměnné (light mode) ─────────────────────────────────── */
:root {
  --green:        #2D6A4F;
  --green-light:  #52B788;
  --green-pale:   #D8F3DC;
  --gold:         #E9C46A;
  --red:          #C44D58;
  --red-pale:     #FDECEA;
  --gold-pale:    #FFF8E7;

  --bg:           #F5F0E8;
  --bg2:          #EDE8DF;
  --sidebar-bg:   #1C3327;
  --sidebar-txt:  #D4E6D5;
  --sidebar-act:  #2D6A4F;
  --card:         #FFFFFF;
  --border:       #D9D4CB;
  --txt:          #2C2416;
  --txt2:         #6B6255;
  --txt3:         #9C9083;
  --topbar:       #FFFFFF;
  --shadow:       0 2px 12px rgba(0,0,0,0.08);
  --radius:       12px;
  --radius-sm:    8px;

  --font-body: 'DM Sans', sans-serif;
  --font-head: 'DM Serif Display', serif;
}

[data-theme="dark"] {
  --bg:           #18211C;
  --bg2:          #1F2A22;
  --sidebar-bg:   #111816;
  --sidebar-txt:  #A8C4A2;
  --sidebar-act:  #2D6A4F;
  --card:         #24302A;
  --border:       #2F3D34;
  --txt:          #E8EDE8;
  --txt2:         #9BB49B;
  --txt3:         #6B836B;
  --topbar:       #1F2A22;
  --shadow:       0 2px 12px rgba(0,0,0,0.3);
  --green-pale:   #1A3D28;
  --red-pale:     #3D1A1E;
  --gold-pale:    #3D3210;
}

/* ── Reset & base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--txt);
  display: flex;
  min-height: 100vh;
  transition: background .3s, color .3s;
}
h1,h2,h3 { font-family: var(--font-head); }
a { color: var(--green); text-decoration: none; }

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  width: 230px;
  background: var(--sidebar-bg);
  color: var(--sidebar-txt);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform .3s, width .3s;
}
.sidebar-logo {
  padding: 1.5rem 1.2rem 1rem;
  font-family: var(--font-head);
  font-size: 1.2rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; gap: .6rem;
}
.logo-icon { font-size: 1.5rem; }
.sidebar-nav {
  flex: 1;
  padding: .8rem 0;
  overflow-y: auto;
  scrollbar-width: none;
}
.sidebar-nav::-webkit-scrollbar { display: none; }
.nav-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .7rem 1.2rem;
  color: var(--sidebar-txt);
  font-size: .92rem;
  border-radius: 0 20px 20px 0;
  margin: .1rem .6rem .1rem 0;
  transition: background .2s, color .2s;
}
.nav-item.nav-section-header {
  font-weight: 600;
  opacity: 0.7;
  font-size: .8rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  pointer-events: auto;
  margin-top: .6rem;
}
.nav-item.nav-sub {
  padding-left: 2rem;
}
.nav-item.active { background: var(--sidebar-act); color: #fff; }
.nav-icon { font-size: 1.1rem; width: 1.4rem; text-align: center; }
.sidebar-footer {
  padding: 1rem 1.2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: .87rem;
}
.theme-toggle {
  display: flex; align-items: center; gap: .5rem;
  cursor: pointer; color: var(--sidebar-txt);
}
.theme-toggle input { cursor: pointer; }

/* ── Main layout ───────────────────────────────────────────── */
.main-wrap {
  margin-left: 230px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.topbar {
  background: var(--topbar);
  border-bottom: 1px solid var(--border);
  padding: .8rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow);
  overflow: visible;
}
.menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--txt);
}
.topbar-left { display: flex; align-items: center; gap: .8rem; }
.topbar-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.2rem;
  color: var(--txt);
  font-weight: 700;
  pointer-events: none;
  white-space: nowrap;
}
.topbar-right { color: var(--txt2); font-size: .88rem; margin-left: auto; }
.topbar-filters { display: flex; gap: .8rem; flex: 1; }
.content { padding: 1.5rem; flex: 1; }

/* ── Karty ─────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.card-title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  color: var(--txt);
  margin-bottom: .8rem;
}

/* ── Stat karty (dashboard) ────────────────────────────────── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: flex; flex-direction: column; gap: .3rem;
}
.stat-label { font-size: .82rem; color: var(--txt2); text-transform: uppercase; letter-spacing: .05em; }
.stat-value { font-family: var(--font-head); font-size: 1.9rem; color: var(--green); }
.stat-sub { font-size: .82rem; color: var(--txt3); }
.stat-card.danger .stat-value { color: var(--red); }
.stat-card.warning .stat-value { color: #C0892B; }

/* ── Tabulky ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
thead th {
  background: var(--bg2);
  color: var(--txt2);
  padding: .7rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background .15s; }
tbody tr:hover { background: var(--bg); cursor: pointer; }
tbody td { padding: .7rem 1rem; vertical-align: middle; }
.table-footer { font-weight: 600; border-top: 2px solid var(--border); }

/* ── Stav badges ───────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: .2rem .65rem;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-zaplaceno  { background: var(--green-pale); color: var(--green); }
.badge-ceka       { background: var(--gold-pale);  color: #9A6F00; }
.badge-po_splatnosti { background: var(--red-pale); color: var(--red); }

/* ── Formuláře ─────────────────────────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: .87rem; font-weight: 500; color: var(--txt2); margin-bottom: .35rem; }
.form-control {
  width: 100%;
  padding: .55rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font-body);
  font-size: .92rem;
  transition: border-color .2s, box-shadow .2s;
}
.form-control:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(45,106,79,.15); }
select.form-control { cursor: pointer; }

/* ── Tlačítka ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.1rem;
  border-radius: var(--radius-sm);
  border: none;
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: filter .15s, opacity .15s;
}
.btn:hover { filter: brightness(1.1); }
.btn:active { filter: brightness(.95); }
.btn-primary   { background: var(--green); color: #fff; }
.btn-secondary { background: var(--bg2); color: var(--txt); border: 1px solid var(--border); }
.btn-danger    { background: var(--red); color: #fff; }
.btn-sm { padding: .35rem .75rem; font-size: .82rem; }
.btn-group { display: flex; gap: .5rem; flex-wrap: wrap; }

/* ── Upload zóna ───────────────────────────────────────────── */
.dropzone {
  border: 2.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: var(--bg);
}
.dropzone:hover, .dropzone.drag-over {
  border-color: var(--green);
  background: var(--green-pale);
}
.dropzone-icon { font-size: 2.5rem; margin-bottom: .5rem; }
.dropzone-text { color: var(--txt2); font-size: .93rem; }
.dropzone-text strong { color: var(--green); }
#fileInput { display: none; }

/* ── Graf (canvas) ─────────────────────────────────────────── */
.chart-wrap { position: relative; height: 280px; margin-top: .5rem; }

/* ── Grid layout helper ────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; }
@media (max-width: 900px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* ── Filters row ───────────────────────────────────────────── */
.filters {
  display: flex; gap: .8rem; flex-wrap: wrap; align-items: center;
  margin-bottom: 1rem; background: var(--card);
  padding: .8rem 1rem; border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.filters select, .filters input[type=date], .filters input[type=text] {
  padding: .4rem .7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font-body);
  font-size: .88rem;
}
.filters label { font-size: .85rem; color: var(--txt2); }

/* ── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.modal {
  background: var(--card);
  border-radius: var(--radius);
  width: min(780px, 100%);
  max-height: 90vh;
  display: flex; flex-direction: column;
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);
}
.modal-header {
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-header h3 { font-family: var(--font-head); }
.modal-close { background: none; border: none; font-size: 1.2rem; cursor: pointer; color: var(--txt2); }
.modal-body { padding: 1.3rem 1.4rem; overflow-y: auto; }

/* ── Toast notifikace ──────────────────────────────────────── */
#toastContainer {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  display: flex; flex-direction: column; gap: .5rem;
  z-index: 300;
}
.toast {
  background: var(--card);
  border-left: 4px solid var(--green);
  border-radius: var(--radius-sm);
  padding: .75rem 1.1rem;
  box-shadow: var(--shadow);
  font-size: .9rem;
  max-width: 320px;
  animation: slideIn .3s ease;
}
.toast.error { border-color: var(--red); }
@keyframes slideIn { from { transform: translateX(120%); } to { transform: translateX(0); } }

/* ── Položky tabulka editor ────────────────────────────────── */
.items-table input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .3rem .5rem;
  background: var(--bg);
  color: var(--txt);
  font-size: .88rem;
  font-family: var(--font-body);
}
.items-table input:focus { outline: none; border-color: var(--green); }
.remove-row { background: none; border: none; color: var(--red); cursor: pointer; font-size: 1.1rem; }

/* ── Page header ───────────────────────────────────────────── */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.3rem; flex-wrap: wrap; gap: .7rem;
}
.page-title { font-family: var(--font-head); font-size: 1.6rem; }

/* ── Zboží detail ──────────────────────────────────────────── */
.price-trend { display: flex; gap: .4rem; align-items: center; }
.trend-up   { color: var(--red); }
.trend-down { color: var(--green); }

/* ── Responzivita ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-wrap { margin-left: 0; }
  .menu-btn { display: block; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .content { padding: 1rem; }
}

/* ── Loading spinner ────────────────────────────────────────── */
.spinner {
  display: inline-block; width: 1.2rem; height: 1.2rem;
  border: 2px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-center { text-align: center; padding: 3rem; color: var(--txt2); }

/* ── Alias sekce ────────────────────────────────────────────── */
.alias-list { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .5rem; }
.alias-tag {
  background: var(--green-pale); color: var(--green);
  border-radius: 20px; padding: .2rem .7rem; font-size: .82rem;
  display: flex; align-items: center; gap: .3rem;
}

/* ── Dokumenty ─────────────────────────────────────────────── */
.dokumenty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.dok-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}
.dok-card-title { font-weight: 600; font-size: 1rem; }
.dok-card-meta  { font-size: .82rem; color: var(--text-muted); }
.dok-card-actions { display: flex; gap: .5rem; margin-top: .5rem; }

/* ── Radek rozcestník ───────────────────────────────────────── */
.radek-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.radek-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: box-shadow .2s, transform .15s;
  font-size: 1rem;
  font-weight: 600;
}
.radek-box:hover { box-shadow: 0 4px 18px rgba(0,0,0,.12); transform: translateY(-2px); }
.radek-box-icon { font-size: 2.5rem; margin-bottom: .7rem; }