/* ============================================
   PROMĚNNÉ A ZÁKLADNÍ NASTAVENÍ
   ============================================ */
:root {
    --primary: #0f172a;
    --accent: #3b82f6;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #334155;
    --border: #e2e8f0;
    --danger: #ef4444;
    --success: #10b981;
    --revenue: #8b5cf6;
    --balance: #f59e0b;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 10px rgba(0,0,0,0.2);

    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 25px;

    --radius-sm: 8px;
    --radius-md: 12px;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ============================================
   RESET A ZÁKLADNÍ STYLY
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    position: relative;
}

/* ============================================
   HLAVIČKA A NAVIGACE
   ============================================ */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    background: var(--card);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

nav {
    display: flex;
    gap: var(--spacing-xs);
}

.tab-btn {
    padding: 8px 16px;
    border: none;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    color: #64748b;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.tab-btn:hover {
    background: #e2e8f0;
    color: var(--text);
}

.tab-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.tab-btn.active {
    background: var(--accent);
    color: white;
}

/* ============================================
   HLAVNÍ OBSAH
   ============================================ */
main {
    background: var(--card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    min-height: 600px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   EDITOR LAYOUT
   ============================================ */
.editor-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .editor-layout {
        grid-template-columns: 1fr;
    }
}

.editor-main {
    min-width: 0;
}

/* ============================================
   TOOLBAR (obecný - pro data a šablony)
   ============================================ */
.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: var(--spacing-md);
    align-items: center;
}

/* ============================================
   TOOLBAR VÝKAZŮ — jedna řada, selects vlevo,
   tlačítka vpravo
   ============================================ */
.generate-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: var(--spacing-md);
    flex-wrap: nowrap;
}

.generate-selects {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.select-label {
    font-size: 12px;
    font-weight: 600;
    color: #64748b;
    white-space: nowrap;
}

.select-data {
    width: 140px;
}

.select-template {
    width: 130px;
}

.generate-btns {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
    margin-left: auto;
}

@media (max-width: 900px) {
    .generate-toolbar {
        flex-wrap: wrap;
    }
    .generate-btns {
        margin-left: 0;
        flex-wrap: wrap;
    }
    .select-data,
    .select-template {
        width: 160px;
    }
}

/* ============================================
   FORMULÁŘOVÉ PRVKY
   ============================================ */
input[type="text"],
select,
textarea {
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition-fast);
    width: 100%;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

textarea {
    height: 500px;
    font-family: 'Fira Code', 'Courier New', monospace;
    background: #fafafa;
    font-size: 13px;
    resize: vertical;
    line-height: 1.5;
}

/* Selects v generate-toolbar mají fixní šířku — nepřebíjeme width:100% */
.generate-selects select {
    width: auto;
}

/* ============================================
   TLAČÍTKA
   ============================================ */
.btn {
    padding: 9px 14px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    transition: all var(--transition-fast);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

.btn-primary  { background: var(--accent);   color: white; }
.btn-primary:hover  { background: #2563eb; }

.btn-success  { background: var(--success);  color: white; }
.btn-success:hover  { background: #059669; }

.btn-revenue  { background: var(--revenue);  color: white; }
.btn-revenue:hover  { background: #7c3aed; }

.btn-balance  { background: var(--balance);  color: white; }
.btn-balance:hover  { background: #d97706; }

.btn-secondary { background: #64748b; color: white; }
.btn-secondary:hover { background: #475569; }

/* ============================================
   POSTRANNÍ PANEL
   ============================================ */
.sidebar {
    border-left: 1px solid var(--border);
    padding-left: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .sidebar {
        border-left: none;
        border-top: 1px solid var(--border);
        padding-left: 0;
        padding-top: var(--spacing-lg);
    }
}

.sidebar h2 {
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #94a3b8;
}

.list-items {
    max-height: 500px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
}

.list-items::-webkit-scrollbar { width: 8px; }
.list-items::-webkit-scrollbar-track { background: transparent; }
.list-items::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }

.list-item {
    padding: 10px;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.list-item:hover {
    border-color: var(--accent);
    background: #f1f5f9;
}

.delete-btn {
    color: var(--danger);
    font-weight: bold;
    cursor: pointer;
    padding: 5px;
    transition: opacity var(--transition-fast);
}

.delete-btn:hover { opacity: 0.7; }

/* ============================================
   NÁHLED VÝKAZU
   ============================================ */
.report-preview {
    background: white;
    padding: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: #000;
    overflow-x: auto;
    min-height: 400px;
}

.report-preview h1 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 5px;
    font-weight: 800;
    letter-spacing: -0.025em;
    text-transform: uppercase;
    color: var(--primary);
}

.report-preview .info {
    text-align: center;
    font-size: 0.9rem;
    margin-bottom: 30px;
    color: #64748b;
}

.placeholder-text {
    text-align: center;
    color: #94a3b8;
    padding-top: 100px;
    font-style: italic;
    font-size: 1rem;
}

/* ============================================
   ÚČETNÍ TABULKY
   ============================================ */
.acc-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    font-size: 12px;
}

.acc-table th {
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    padding: 12px;
    font-size: 11px;
    text-align: left;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.025em;
    position: sticky;
    top: 0;
    z-index: 10;
}

.acc-table td {
    border: 1px solid #cbd5e1;
    padding: 10px 12px;
    vertical-align: middle;
}

.num {
    text-align: right;
    font-family: 'Courier New', Consolas, monospace;
    font-weight: 600;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.section-header {
    background: #1e293b !important;
    color: white;
    text-align: center !important;
    font-weight: bold;
    text-transform: uppercase;
    padding: 10px !important;
    letter-spacing: 0.05em;
}

.row-bold {
    font-weight: 700;
    background: #f8fafc;
}

.neg { color: var(--danger); }

/* ============================================
   ANALYTICKÉ ŘÁDKY
   ============================================ */
.group-row { background-color: #e2e8f0; font-weight: 700; }
.synth-row { background-color: #f1f5f9; font-weight: 600; }

.acc-row {
    background-color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.acc-row:hover { background-color: #f8fafc; }

.acc-row td:first-child {
    padding-left: 20px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--accent);
}

.text-group-row {
    display: none;
    background-color: #ffffff;
    cursor: pointer;
    font-weight: 600;
    transition: background-color var(--transition-fast);
}

.text-group-row:hover { background-color: #f8fafc; }

.text-group-row td:first-child {
    padding-left: 40px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.detail-row {
    display: none;
    color: #64748b;
    font-style: italic;
    background-color: #f8fafc;
}

.detail-row td:first-child {
    padding-left: 65px;
    color: #94a3b8;
    font-size: 11px;
}

.subtotal-row {
    display: none;
    background-color: #f8fafc;
    font-weight: 700;
    border-top: 2px solid #cbd5e1;
}

.subtotal-row td:first-child { padding-left: 40px; }

.visible { display: table-row !important; }

.icon-fold {
    font-size: 10px;
    transition: transform var(--transition-fast);
    color: var(--accent);
    display: inline-block;
}

.expanded > td:first-child > .icon-fold {
    transform: rotate(90deg);
}

/* ============================================
   VALIDAČNÍ A BALANCE BOXY
   ============================================ */
.validation-box {
    margin-top: var(--spacing-xl);
    padding: 18px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    border-left: 6px solid;
    box-shadow: var(--shadow-sm);
}

.validation-ok { background: #ecfdf5; color: #065f46; border-color: var(--success); }
.validation-warn { background: #fffbeb; color: #92400e; border-color: var(--balance); }

.balance-check {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: bold;
    text-align: center;
    border: 2px solid;
}

.balance-ok { background: #ecfdf5; color: #065f46; border-color: var(--success); }
.balance-err { background: #fef2f2; color: #991b1b; border-color: #dc2626; }

/* ============================================
   CHYBOVÝ BANNER
   ============================================ */
.error-banner {
    background: #fee2e2;
    color: #991b1b;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid #dc2626;
    font-weight: 500;
}

/* ============================================
   SCROLL TO TOP
   ============================================ */
#scrollTopBtn,
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
    z-index: 1000;
}

#scrollTopBtn:hover,
.scroll-top-btn:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

/* ============================================
   TISK
   ============================================ */
@media print {
  header,
  nav,
  .tab-btn,
  .generate-toolbar,
  .generate-selects,
  .generate-btns,
  .toolbar,
  .editor-layout,
  .sidebar,
  .error-banner,
  #scrollTopBtn,
  .scroll-top-btn,
  .tab-content:not(.active),
  .balance-check,
  .validation-box {
    display: none !important;
  }

  @page {
    margin: 10mm 15mm;
    size: A4 portrait;
  }

  body {
    background: white;
    font-size: 11px;
  }

  .container {
    padding: 0;
    max-width: 100%;
  }

  main {
    box-shadow: none;
    padding: 0;
    min-height: unset;
  }

  .tab-content.active {
    display: block !important;
  }

  .report-preview {
    border: none;
    padding: 0;
    overflow: visible;
  }

  .report-preview h1 {
    font-size: 1.2rem;
    margin-bottom: 2px;
  }

  .report-preview .info {
    margin-bottom: 10px;
    font-size: 0.8rem;
  }

  .acc-table {
    font-size: 9px;
  }

  .acc-table th {
    position: static;
    padding: 5px 6px;
    font-size: 8px;
  }

  .acc-table td {
    padding: 4px 6px;
  }

  .num {
    white-space: nowrap;
  }
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   PŘÍSTUPNOST
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}