/* Εγχειρίδιο χρήσης: κοινή εμφάνιση όλων των κεφαλαίων.
   Ίδια παλέτα με την εφαρμογή, light/dark μέσω [data-theme] στο <html>. */

:root, :root[data-theme="light"] {
    --m-bg: #eef2f8;
    --m-card: #ffffff;
    --m-text: #334155;
    --m-muted: #64748b;
    --m-border: #d1daea;
    --m-primary: #2563eb;
    --m-primary-soft: #eff6ff;
    --m-code-bg: #f1f5f9;
    --m-note-bg: #eff6ff;
    --m-note-border: #93c5fd;
    --m-warn-bg: #fff7ed;
    --m-warn-border: #fdba74;
    --m-ok: #16a34a;
    --m-info: #0dcaf0;
    --m-purple: #7c3aed;
    --m-amber: #eab308;
    --m-orange: #f97316;
    --m-red: #dc2626;
    --m-grey: #64748b;
    --m-shadow: 0 1px 4px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
}
:root[data-theme="dark"] {
    --m-bg: #162032;
    --m-card: #1e293b;
    --m-text: #e2e8f0;
    --m-muted: #94a3b8;
    --m-border: #334155;
    --m-primary: #3b82f6;
    --m-primary-soft: rgba(59,130,246,.14);
    --m-code-bg: #0f172a;
    --m-note-bg: rgba(59,130,246,.12);
    --m-note-border: #1d4ed8;
    --m-warn-bg: rgba(249,115,22,.12);
    --m-warn-border: #c2410c;
    --m-shadow: 0 1px 4px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
    margin: 0;
    background: var(--m-bg);
    color: var(--m-text);
    font-family: 'Open Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.65;
}
a { color: var(--m-primary); }

/* ── Κεφαλίδα ─────────────────────────────────────────────────────────── */
.m-header {
    position: sticky; top: 0; z-index: 10;
    display: flex; align-items: center; gap: 12px;
    padding: 10px 20px;
    background: #0f172a; color: #e2e8f0;
    box-shadow: 0 2px 8px rgba(0,0,0,.25);
}
.m-header a.m-brand { color: inherit; text-decoration: none; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.m-header .m-brand small { font-weight: 400; color: #94a3b8; }
.m-header .m-spacer { flex: 1; }
.m-icon-btn {
    background: #1e293b; color: #e2e8f0; border: 0; border-radius: 8px;
    width: 36px; height: 36px; cursor: pointer; font-size: 15px;
}
.m-icon-btn:hover { background: #334155; }
.m-menu-btn { display: none; }

/* ── Διάταξη ──────────────────────────────────────────────────────────── */
.m-layout { display: flex; max-width: 1280px; margin: 0 auto; gap: 24px; padding: 24px 20px 64px; }
.m-nav {
    width: 250px; flex-shrink: 0;
    position: sticky; top: 76px; align-self: flex-start;
    max-height: calc(100vh - 96px); overflow-y: auto;
}
.m-nav h4 { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--m-muted); margin: 18px 0 6px; }
.m-nav h4:first-child { margin-top: 0; }
.m-nav a {
    display: flex; align-items: center; gap: 8px;
    padding: 6px 10px; border-radius: 8px;
    color: var(--m-text); text-decoration: none; font-size: 14px;
}
.m-nav a:hover { background: var(--m-primary-soft); }
.m-nav a.active { background: var(--m-primary); color: #fff; }
.m-nav a.m-soon { color: var(--m-muted); pointer-events: none; }
.m-nav a.m-soon::after { content: 'σύντομα'; margin-left: auto; font-size: 10px; opacity: .8; }
.m-nav .m-sub a { padding-left: 30px; font-size: 13px; color: var(--m-muted); }
.m-nav .m-sub a:hover { color: var(--m-text); }

.m-main { flex: 1; min-width: 0; }
.m-article {
    background: var(--m-card); border-radius: 12px; box-shadow: var(--m-shadow);
    padding: 28px 36px 36px;
}
.m-article h1 { font-size: 26px; margin: 0 0 4px; display: flex; align-items: center; gap: 12px; color: var(--m-text); }
.m-article h1 i { color: var(--m-primary); }
.m-meta { color: var(--m-muted); font-size: 13px; margin-bottom: 20px; }
.m-article h2 {
    font-size: 19px; margin: 36px 0 10px; padding-top: 18px;
    border-top: 1px solid var(--m-border); color: var(--m-text);
}
.m-article h3 { font-size: 16px; margin: 22px 0 8px; color: var(--m-text); }
.m-article p { margin: 8px 0; }
.m-article ol, .m-article ul { padding-left: 22px; }
.m-article li { margin: 4px 0; }
.m-article kbd, .m-article code {
    background: var(--m-code-bg); border: 1px solid var(--m-border); border-radius: 5px;
    padding: 0 5px; font-size: 13px; font-family: inherit;
}
.m-lead { font-size: 16px; }

/* ── Πίνακες ──────────────────────────────────────────────────────────── */
.m-table-wrap { overflow-x: auto; margin: 12px 0; }
.m-article table { border-collapse: collapse; width: 100%; font-size: 14px; }
.m-article th, .m-article td { border: 1px solid var(--m-border); padding: 8px 10px; text-align: left; vertical-align: top; }
.m-article th { background: var(--m-code-bg); font-weight: 600; }

/* ── Πλαίσια σημειώσεων ───────────────────────────────────────────────── */
.m-note, .m-warn {
    border-left: 4px solid var(--m-note-border); background: var(--m-note-bg);
    padding: 10px 14px; border-radius: 0 8px 8px 0; margin: 14px 0; font-size: 14px;
}
.m-warn { border-left-color: var(--m-warn-border); background: var(--m-warn-bg); }
.m-note strong:first-child, .m-warn strong:first-child { display: block; margin-bottom: 2px; }

/* ── Βήματα ───────────────────────────────────────────────────────────── */
.m-steps { counter-reset: step; list-style: none; padding-left: 0 !important; }
.m-steps > li { counter-increment: step; position: relative; padding-left: 38px; margin: 10px 0; }
.m-steps > li::before {
    content: counter(step); position: absolute; left: 0; top: 1px;
    width: 26px; height: 26px; border-radius: 50%;
    background: var(--m-primary); color: #fff; font-size: 13px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}

/* ── Απομιμήσεις στοιχείων οθόνης ─────────────────────────────────────── */
.m-badge {
    display: inline-block; padding: 2px 8px; border-radius: 6px;
    font-size: 12px; font-weight: 700; color: #fff; line-height: 1.5; white-space: nowrap;
}
.m-badge.ok { background: var(--m-ok); }
.m-badge.info { background: var(--m-info); color: #000; }
.m-badge.purple { background: var(--m-purple); }
.m-badge.warn { background: #ffc107; color: #000; }
.m-badge.red { background: var(--m-red); }
.m-badge.grey { background: var(--m-grey); }
.m-btn {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 2px 9px; border-radius: 6px; font-size: 12px; font-weight: 600;
    color: #fff; background: #6c757d; white-space: nowrap; vertical-align: 1px;
}
.m-btn.primary { background: #0d6efd; }
.m-btn.success { background: #198754; }
.m-btn.danger { background: #dc3545; }

.m-screen {
    border: 1px solid var(--m-border); border-radius: 10px; margin: 14px 0;
    background: var(--m-bg); overflow: hidden; font-size: 13px;
}
.m-screen-title {
    background: var(--m-card); border-bottom: 1px solid var(--m-border);
    padding: 8px 12px; font-weight: 700; display: flex; align-items: center; gap: 8px;
}
.m-screen-body { padding: 12px; }
.m-screen-caption { font-size: 12px; color: var(--m-muted); padding: 0 12px 10px; }
.m-row {
    display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
    background: var(--m-card); border: 1px solid var(--m-border); border-radius: 8px;
    padding: 8px 10px; margin: 6px 0;
}
.m-row .m-row-title { font-weight: 700; }
.m-row .m-row-sub { color: var(--m-muted); font-size: 12px; }
.m-row .m-row-actions { display: flex; gap: 4px; flex-wrap: wrap; }

.m-flow { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
.m-flow .m-arrow { color: var(--m-muted); }

.m-segbar { display: inline-flex; gap: 2px; width: 112px; vertical-align: middle; }
.m-segbar span { flex: 1; height: 5px; border-radius: 1px; background: var(--m-border); }

/* ── Συχνές ερωτήσεις ─────────────────────────────────────────────────── */
.m-faq details {
    border: 1px solid var(--m-border); border-radius: 8px; margin: 8px 0; background: var(--m-card);
}
.m-faq summary { cursor: pointer; padding: 10px 14px; font-weight: 600; }
.m-faq details[open] summary { border-bottom: 1px solid var(--m-border); }
.m-faq details > div { padding: 6px 14px 10px; }

/* ── Αρχική σελίδα / αναζήτηση ────────────────────────────────────────── */
.m-search {
    width: 100%; padding: 10px 14px; font-size: 15px; border-radius: 10px;
    border: 1px solid var(--m-border); background: var(--m-card); color: var(--m-text); margin: 10px 0 20px;
}
.m-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.m-card {
    display: flex; gap: 12px; align-items: flex-start;
    padding: 14px; border-radius: 10px; border: 1px solid var(--m-border);
    background: var(--m-card); color: var(--m-text); text-decoration: none;
}
.m-card:hover { border-color: var(--m-primary); }
.m-card i { color: var(--m-primary); font-size: 20px; margin-top: 2px; width: 24px; text-align: center; }
.m-card .m-card-title { font-weight: 700; }
.m-card .m-card-desc { font-size: 13px; color: var(--m-muted); }
.m-card.m-soon { opacity: .55; pointer-events: none; }
.m-results a { display: block; padding: 10px 12px; border: 1px solid var(--m-border); border-radius: 8px; margin: 6px 0; text-decoration: none; color: var(--m-text); background: var(--m-card); }
.m-results a:hover { border-color: var(--m-primary); }
.m-results .m-res-title { font-weight: 700; }
.m-results .m-res-snip { font-size: 13px; color: var(--m-muted); }
.m-results mark { background: #fde68a; color: #000; border-radius: 3px; padding: 0 2px; }

/* ── Κινητό ───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .m-menu-btn { display: inline-block; }
    .m-layout { padding: 16px 16px 48px; }
    .m-nav {
        display: none; position: fixed; top: 56px; left: 0; bottom: 0; width: 280px; max-height: none;
        background: var(--m-card); padding: 16px; z-index: 20; box-shadow: 4px 0 16px rgba(0,0,0,.3);
    }
    .m-nav.open { display: block; }
    .m-article { padding: 20px 18px 28px; }
    .m-header .m-brand small { display: none; }
}

@media print {
    .m-header, .m-nav { display: none; }
    .m-layout { padding: 0; }
    .m-article { box-shadow: none; }
}