:root {
    --bg:     #0a0f1e;
    --panel:  #111827;
    --card:   #1a2235;
    --border: #1e3a5f;
    --accent: #f59e0b;
    --green:  #22c55e;
    --red:    #ef4444;
    --cyan:   #06b6d4;
    --white:  #f1f5f9;
    --dim:    #64748b;
    --btn:    #1d4ed8;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--white);
    font-family: "Segoe UI", system-ui, sans-serif;
    font-size: 14px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--card);
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    position: relative;
}
header h1 { margin: 0; font-size: 20px; color: var(--accent); }
header .sub { color: var(--dim); font-size: 13px; }
header .back { margin-left: auto; }

main { max-width: 1200px; margin: 0 auto; padding: 20px; width: 100%; flex: 1; }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px;
    margin-bottom: 18px;
}
.card.error { border-color: var(--red); }
.card h2 { margin: 0 0 12px; font-size: 16px; color: var(--accent); }

.dim { color: var(--dim); }
code { background: var(--panel); padding: 2px 6px; border-radius: 4px; color: var(--cyan); }

.meta { display: flex; flex-wrap: wrap; gap: 24px; }
.meta b { color: var(--cyan); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 12px; }
thead th { color: var(--dim); font-weight: 600; font-size: 12px; border-bottom: 1px solid var(--border); }
tbody tr { border-bottom: 1px solid rgba(30,58,95,0.4); }
tbody tr:hover { background: rgba(29,78,216,0.08); }

.table-wrap { overflow-x: auto; }

.winner { color: var(--accent); }
.name { font-weight: 600; }

.btn {
    display: inline-block;
    background: var(--btn);
    color: var(--white);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    transition: background .15s;
    white-space: nowrap;
}
.btn:hover { background: #2563eb; }

/* Leaderboard bary */
.leaderboard .bar-cell { width: 30%; }
.leaderboard .bar {
    height: 14px;
    background: linear-gradient(90deg, var(--btn), var(--cyan));
    border-radius: 3px;
    min-width: 2px;
}

/* Esej — stránka Reálný svět */
.essay { max-width: 760px; margin: 0 auto; line-height: 1.7; }
.essay h2 { margin: 28px 0 10px; font-size: 18px; color: var(--accent); }
.essay p { margin: 12px 0; color: #cdd5e0; }
.essay b { color: var(--white); }
.essay i { color: var(--cyan); font-style: italic; }
.essay ul, .essay ol { color: #cdd5e0; padding-left: 22px; }
.essay li { margin: 6px 0; }
.essay .lead { font-size: 16px; color: var(--white); }
.essay blockquote {
    margin: 20px 0;
    padding: 14px 18px;
    border-left: 3px solid var(--accent);
    background: var(--panel);
    border-radius: 0 8px 8px 0;
    color: var(--white);
    font-size: 16px;
}
.essay .note {
    margin: 16px 0;
    padding: 14px 18px;
    background: rgba(6,182,212,0.08);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: #cdd5e0;
}

/* Matice */
.matrix-wrap { overflow-x: auto; }
.matrix { border-collapse: collapse; font-size: 12px; }
.matrix td, .matrix th { text-align: center; padding: 6px 8px; border: 1px solid var(--bg); }
.matrix .rowname { text-align: right; color: var(--white); white-space: nowrap; background: var(--panel); }
.matrix .self { background: var(--panel); color: var(--dim); }
.matrix .empty { background: var(--panel); color: var(--dim); }
.matrix td { color: var(--white); font-variant-numeric: tabular-nums; }

/* Rotovaná záhlaví sloupců */
.matrix th.rot {
    height: 110px;
    white-space: nowrap;
    background: var(--panel);
}
.matrix th.rot span {
    display: inline-block;
    transform: rotate(-60deg);
    transform-origin: left bottom;
    width: 20px;
    color: var(--dim);
}

/* Formulář — spustit turnaj */
.run-form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.run-form label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--dim); }
.run-form input[type="text"],
.run-form input[type="number"] {
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--white);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 13px;
    width: 110px;
}
.run-form input[type="text"] { width: 220px; }
.strategy-checks { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 6px; }
.run-form label.check {
    flex-direction: row;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--white);
}
.run-form button { align-self: flex-start; cursor: pointer; border: none; font-size: 14px; }

/* Footer */
footer {
    text-align: center;
    padding: 20px 18px;
    color: var(--dim);
    font-size: 12px;
    border-top: 1px solid var(--border);
}
footer a { color: var(--cyan); text-decoration: none; }
footer a:hover { text-decoration: underline; }

@keyframes heartbeat { 0%,100%{transform:scale(1)} 50%{transform:scale(1.18)} }
.footer-heart { color:#e03030; text-decoration:none; display:inline-block; }
.footer-heart:hover { animation: heartbeat 0.7s ease-in-out infinite; }

/* Mobil */
@media (max-width: 640px) {
    header {
        flex-wrap: wrap;
        padding: 12px 16px;
        gap: 6px 12px;
    }
    header .back { margin-left: 0; order: 3; width: 100%; }
    header .sub { font-size: 12px; }

    main { padding: 12px; }
    .card { padding: 14px; }

    th, td { padding: 6px 8px; font-size: 12px; }

    .meta { gap: 10px 20px; font-size: 13px; }

    .essay { font-size: 13px; }
    .essay blockquote, .essay .note { padding: 10px 14px; font-size: 14px; }
}