/* ============================================================
   shared.css — Semestr ZS 2026/27 · sdílené styly
   ============================================================ */

/* Base — --accent nastavuje courses.js podle <body data-course> */
:root { --accent: #1e293b; }

body {
    padding-top: 56px;
    background: #f8f9fa;
    font-size: 0.95rem;
}

/* ── Navbar ────────────────────────────────────────────────── */
.subject-navbar {
    background-color: var(--accent) !important;
}

/* ── H3 barva ──────────────────────────────────────────────── */
.topic-section h3 { color: var(--accent); }

/* ── Sidebar TOC ───────────────────────────────────────────── */
.topic-nav {
    position: sticky;
    top: 72px;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1rem;
}

.topic-nav .nav-link {
    color: #475569;
    font-size: 0.85rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.topic-nav .nav-link:hover,
.topic-nav .nav-link.active {
    background: #f1f5f9;
    color: #0f172a;
}

/* ── Sekce ─────────────────────────────────────────────────── */
.topic-section {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 1.5rem 1.75rem;
    margin-bottom: 1.5rem;
}

.topic-section h3 {
    font-size: 1.15rem;
    font-weight: 700;
    border-bottom: 2px solid currentColor;
    padding-bottom: 0.4rem;
    margin-bottom: 1rem;
}

.topic-section h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #334155;
    margin-top: 1rem;
    margin-bottom: 0.4rem;
}

/* ── Boxy ──────────────────────────────────────────────────── */
.def-box,
.thm-box,
.ex-box,
.warn-box,
.insight-box,
.summary-box {
    border-radius: 6px;
    padding: 0.75rem 1rem;
    margin: 0.75rem 0;
    font-size: 0.9rem;
    border-left: 4px solid transparent;
}

/* Definice — barva předmětu */
.def-box {
    background: color-mix(in srgb, var(--accent) 8%, #fff);
    border-left-color: var(--accent);
}

/* Věta — zelená */
.thm-box {
    background: #f0fdf4;
    border-left-color: #16A34A;
}

/* Příklad — cyan */
.ex-box {
    background: #ecfeff;
    border-left-color: #06b6d4;
}

/* Záludnost — žlutá */
.warn-box {
    background: #fefce8;
    border-left-color: #ca8a04;
}

/* Intuice — fialová */
.insight-box {
    background: #faf5ff;
    border-left-color: #9333ea;
}

/* Shrnutí — šedá */
.summary-box {
    background: #f8fafc;
    border-left-color: #94a3b8;
}

.summary-box ul {
    margin-bottom: 0;
    padding-left: 1.2rem;
}

/* ── Vzorce ────────────────────────────────────────────────── */
.formula-block {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 0.75rem 1rem;
    margin: 0.75rem 0;
    text-align: center;
    font-size: 1.05rem;
    overflow-x: auto;
}

/* ── Tabulky ───────────────────────────────────────────────── */
.summary-table {
    font-size: 0.875rem;
}

.summary-table thead {
    background: #f1f5f9;
}

/* ── Dark mode ─────────────────────────────────────────────── */
body.dark-mode {
    background: #0f172a;
    color: #e2e8f0;
}

body.dark-mode .topic-section {
    background: #1e293b;
    border-color: #334155;
}

body.dark-mode .topic-nav {
    background: #1e293b;
    border-color: #334155;
}

body.dark-mode .topic-nav .nav-link { color: #94a3b8; }
body.dark-mode .topic-nav .nav-link:hover,
body.dark-mode .topic-nav .nav-link.active { background: #334155; color: #f1f5f9; }

body.dark-mode .def-box,
body.dark-mode .thm-box,
body.dark-mode .ex-box,
body.dark-mode .warn-box,
body.dark-mode .insight-box,
body.dark-mode .summary-box { filter: brightness(0.75); }

body.dark-mode .formula-block {
    background: #1e293b;
    border-color: #334155;
    color: #e2e8f0;
}

body.dark-mode .summary-table thead { background: #1e293b; }
body.dark-mode .table { color: #e2e8f0; }
body.dark-mode .table-bordered { border-color: #334155; }
body.dark-mode .table-bordered td,
body.dark-mode .table-bordered th { border-color: #334155; }

/* ── Dashboard karty ───────────────────────────────────────── */
.subject-card {
    border-radius: 12px;
    border: none;
    transition: transform 0.15s, box-shadow 0.15s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.subject-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    color: inherit;
}

.subject-card .card-body {
    padding: 1.5rem;
}

.subject-card .card-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* ── Harmonogram ───────────────────────────────────────────── */
.timetable {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: .5rem;
}
.timetable .day-col h6 {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #64748b;
    margin-bottom: .4rem;
}
.timetable .day-col.today h6 { color: #0f172a; font-weight: 700; }
.slot {
    display: block;
    border-left: 4px solid var(--c, #94a3b8);
    background: color-mix(in srgb, var(--c, #94a3b8) 10%, #fff);
    border-radius: 6px;
    padding: .4rem .55rem;
    margin-bottom: .4rem;
    font-size: .78rem;
    line-height: 1.3;
    color: #0f172a;
    text-decoration: none;
}
.slot:hover { color: #0f172a; filter: brightness(.96); }
.slot .slot-time { font-weight: 700; }
.slot .slot-room { color: #64748b; }

@media (max-width: 767px) {
    .timetable { grid-template-columns: 1fr; }
}

.event-item {
    display: flex;
    gap: .75rem;
    align-items: baseline;
    padding: .45rem 0;
    border-bottom: 1px solid #e2e8f0;
    font-size: .88rem;
}
.event-item:last-child { border-bottom: none; }
.event-item .event-date { min-width: 5.5rem; font-weight: 700; }
.event-item .event-dot {
    width: .6rem; height: .6rem; border-radius: 50%;
    background: var(--c, #94a3b8); flex-shrink: 0; align-self: center;
}
.event-item.past { opacity: .45; }
.event-type {
    font-size: .7rem; font-weight: 700; text-transform: uppercase;
    padding: .1rem .45rem; border-radius: 99px; background: #f1f5f9; color: #475569;
}
.event-type.test, .event-type.zkouska { background: #fef2f2; color: #b91c1c; }
.event-type.deadline { background: #fefce8; color: #a16207; }

.week-row.current { background: color-mix(in srgb, var(--accent) 10%, #fff); font-weight: 600; }

body.dark-mode .slot { background: #1e293b; color: #e2e8f0; }
body.dark-mode .slot .slot-room { color: #94a3b8; }
body.dark-mode .timetable .day-col.today h6 { color: #f1f5f9; }
body.dark-mode .event-item { border-bottom-color: #334155; }
body.dark-mode .event-type { background: #334155; color: #e2e8f0; }
body.dark-mode .week-row.current { background: #334155; }

/* ── Kód (R lab) ───────────────────────────────────────────── */
.r-box {
    background: #0f172a;
    color: #e2e8f0;
    border-radius: 6px;
    border-left: 4px solid var(--accent);
    padding: 0.75rem 1rem;
    margin: 0.75rem 0;
    font-size: 0.8rem;
    line-height: 1.45;
    overflow-x: auto;
    white-space: pre;
}
.r-box code { color: inherit; background: none; padding: 0; font-size: inherit; }