/* ============================================================
   Alternatívna História — štýly
   Minimalistický dizajn, light/dark mód, responzívny layout
   ============================================================ */

/* --- Premenné tém --- */
:root[data-theme="light"] {
    --bg:           #f6f7fb;
    --bg-card:      #ffffff;
    --bg-header:    #ffffff;
    --bg-footer:    #1f2937;
    --text:         #1f2937;
    --text-muted:   #6b7280;
    --text-footer:  #e5e7eb;
    --primary:      #eaa60a;   /* KPS žltá */
    --primary-dark: #c7890a;
    --accent:       #2563eb;
    --border:       #e5e7eb;
    --shadow:       0 2px 8px rgba(0,0,0,0.06);
    --shadow-lg:    0 10px 30px rgba(0,0,0,0.08);
    --success:      #059669;
    --danger:       #dc2626;
    --info:         #0891b2;
}

:root[data-theme="dark"] {
    --bg:           #0f1115;
    --bg-card:      #1a1d23;
    --bg-header:    #1a1d23;
    --bg-footer:    #0a0c10;
    --text:         #e5e7eb;
    --text-muted:   #9ca3af;
    --text-footer:  #9ca3af;
    --primary:      #eaa60a;
    --primary-dark: #f5b820;
    --accent:       #60a5fa;
    --border:       #2d323b;
    --shadow:       0 2px 8px rgba(0,0,0,0.4);
    --shadow-lg:    0 10px 30px rgba(0,0,0,0.5);
    --success:      #10b981;
    --danger:       #f87171;
    --info:         #22d3ee;
}

/* --- Reset a základy --- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
    width: 100%;
}

/* --- Hlavička --- */
.main-header {
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
}

.logo {
    height: 44px;
    width: auto;
}

.logo-fei {
    filter: var(--logo-filter, none);
}

:root[data-theme="dark"] .logo-fei { filter: invert(1); }

.brand-text {
    font-size: 0.95rem;
    line-height: 1.1;
    color: var(--text);
}

/* --- Navigácia --- */
.main-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem 0.85rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.main-nav a:hover { background: var(--bg); color: var(--primary); }
.main-nav a.active { background: var(--primary); color: #fff; }

.user-info {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 0.5rem 0.5rem;
}

.btn-logout {
    background: var(--danger);
    color: #fff !important;
}
.btn-logout:hover { background: #b91c1c !important; color: #fff !important; }

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    cursor: pointer;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    font-size: 1.1rem;
    transition: all 0.2s;
}
.theme-toggle:hover { border-color: var(--primary); }

:root[data-theme="light"] .theme-icon-dark { display: none; }
:root[data-theme="dark"] .theme-icon-light { display: none; }

.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}
.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    margin: 5px 0;
    transition: 0.3s;
}

/* --- Hlavný obsah --- */
.main-content {
    flex: 1;
    padding: 2rem 1.25rem;
}

h1 { font-size: 2rem; margin-bottom: 1rem; color: var(--text); }
h2 { font-size: 1.5rem; margin: 1.5rem 0 1rem; color: var(--text); }
h3 { font-size: 1.2rem; margin: 1rem 0 0.5rem; color: var(--text); }

/* --- Hero banner (domov) --- */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 3rem 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 400px; height: 400px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}
.hero h1 { color: #fff; font-size: 2.5rem; }
.hero p { font-size: 1.1rem; opacity: 0.95; max-width: 700px; margin: 0.5rem auto; }

/* --- Karty (stats) --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
    transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

.stat-card .stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
}
.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Feature cards --- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature-card {
    background: var(--bg-card);
    padding: 1.75rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text);
    transition: all 0.25s;
    border: 1px solid var(--border);
}
.feature-card:hover { 
    transform: translateY(-5px); 
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

/* --- Tabuľky --- */
.table-wrap {
    background: var(--bg-card);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

table.data-table th,
table.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

table.data-table thead {
    background: var(--bg);
}

table.data-table th {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

table.data-table th a {
    color: var(--text-muted);
    text-decoration: none;
}
table.data-table th a:hover { color: var(--primary); }
table.data-table th.sorted { color: var(--primary); }
table.data-table th.sorted::after { content: ' ↕'; }
table.data-table th.sort-asc::after { content: ' ↑'; color: var(--primary); }
table.data-table th.sort-desc::after { content: ' ↓'; color: var(--primary); }

table.data-table tbody tr:hover { background: var(--bg); }

table.data-table td.actions {
    white-space: nowrap;
    text-align: right;
}

/* --- Filter bar --- */
.filter-bar {
    background: var(--bg-card);
    padding: 1.25rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    align-items: end;
}
.filter-bar .field { flex: 1; min-width: 170px; }
.filter-bar label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

/* Pekné inputy a selecty vo filter-bare */
.filter-bar input[type="text"],
.filter-bar input[type="number"],
.filter-bar select {
    width: 100%;
    padding: 0.65rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.filter-bar input[type="text"]:hover,
.filter-bar input[type="number"]:hover,
.filter-bar select:hover {
    border-color: var(--primary);
    background: var(--bg-card);
}

.filter-bar input[type="text"]:focus,
.filter-bar input[type="number"]:focus,
.filter-bar select:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(234, 166, 10, 0.18);
}

.filter-bar input::placeholder { color: var(--text-muted); opacity: 0.7; }

/* Vlastná šípka pre select (svetlá téma) */
:root[data-theme="light"] .filter-bar select {
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7280' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    background-size: 11px 7px;
    padding-right: 2.4rem;
    cursor: pointer;
}

/* Vlastná šípka pre select (tmavá téma) */
:root[data-theme="dark"] .filter-bar select {
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239ca3af' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    background-size: 11px 7px;
    padding-right: 2.4rem;
    cursor: pointer;
}

/* Tlačidlá vo filter bare */
.filter-bar .btn {
    padding: 0.65rem 1.1rem;
}

/* Skry IE/Edge default šípku */
.filter-bar select::-ms-expand { display: none; }

/* --- Formuláre --- */
.form-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    max-width: 500px;
    margin: 2rem auto;
}
.form-card.wide { max-width: 700px; }

.form-group {
    margin-bottom: 1.1rem;
}
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.4rem;
    color: var(--text);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.form-group select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    cursor: pointer;
    padding-right: 2.4rem;
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    background-size: 11px 7px;
}
:root[data-theme="light"] .form-group select {
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7280' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
}
:root[data-theme="dark"] .form-group select {
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239ca3af' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
}
.form-group select::-ms-expand { display: none; }

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(234, 166, 10, 0.18);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); opacity: 0.7; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* --- Tlačidlá --- */
.btn {
    display: inline-block;
    padding: 0.6rem 1.25rem;
    border-radius: 6px;
    border: none;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }
.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.85rem; }

.actions-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem;
    flex-wrap: wrap;
}

/* --- Flash hlášky --- */
.flash {
    padding: 0.85rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-weight: 500;
}
.flash-success { background: rgba(5, 150, 105, 0.12); color: var(--success); border: 1px solid var(--success); }
.flash-error   { background: rgba(220, 38, 38, 0.12); color: var(--danger);  border: 1px solid var(--danger); }
.flash-info    { background: rgba(8, 145, 178, 0.12); color: var(--info);    border: 1px solid var(--info); }

/* --- Päta --- */
.main-footer {
    background: var(--bg-footer);
    color: var(--text-footer);
    padding: 2rem 0 1rem;
    margin-top: 3rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 1.5rem;
}
.footer-grid h4 { color: var(--primary); margin-bottom: 0.5rem; font-size: 1rem; }
.footer-grid p { font-size: 0.9rem; opacity: 0.9; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1rem;
    text-align: center;
    font-size: 0.85rem;
}

/* --- Pagination --- */
.pagination {
    display: flex;
    gap: 0.25rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}
.pagination a, .pagination span {
    padding: 0.5rem 0.85rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* --- Slider/Carousel --- */
.slider {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
}
.slides {
    display: flex;
    transition: transform 0.6s ease-in-out;
}
.slide {
    min-width: 100%;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--accent) 0%, #1e40af 100%);
    color: #fff;
    text-align: center;
}
.slide:nth-child(2) { background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%); }
.slide:nth-child(3) { background: linear-gradient(135deg, #db2777 0%, #9d174d 100%); }
.slide:nth-child(4) { background: linear-gradient(135deg, #059669 0%, #065f46 100%); }
.slide h2 { color: #fff; font-size: 2rem; }
.slide p { font-size: 1.05rem; opacity: 0.95; }

.slider-nav {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    position: absolute;
    bottom: 0.5rem;
    left: 0; right: 0;
}
.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}
.slider-dot.active { background: #fff; }

/* --- Dopyty (výsledky) --- */
.query-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}
.query-card h3 {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}
.query-sql {
    background: var(--bg);
    padding: 1rem;
    border-radius: 6px;
    font-family: "Courier New", monospace;
    font-size: 0.85rem;
    overflow-x: auto;
    border-left: 3px solid var(--primary);
    margin-bottom: 1rem;
    white-space: pre-wrap;
    color: var(--text);
}

/* --- Responzívny dizajn --- */
@media (max-width: 900px) {
    .header-inner { flex-wrap: wrap; }
    .mobile-toggle { display: block; }
    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        padding-top: 0.5rem;
    }
    .main-nav.open { display: flex; }
    .main-nav a { width: 100%; text-align: left; }
    .hero h1 { font-size: 1.8rem; }
    .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .actions-row { flex-direction: column; align-items: stretch; }
    .filter-bar .field { min-width: 100%; }
    h1 { font-size: 1.5rem; }
    .hero { padding: 2rem 1rem; }
}

/* --- Animácie --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn 0.5s ease-out; }
.main-content > * { animation: fadeIn 0.4s ease-out; }