/* ============================================================
   Bütün Sistemler Sayfası — public/css/pages/systems.css
   ============================================================ */

/* ── Değişkenler ─────────────────────────────────────────────
   Ana style.css'teki --color-* değişkenlerini miras alır.      */

/* ── Hero ─────────────────────────────────────────────────── */
.systems-hero {
    padding: 3rem 0 2.5rem;
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(
        to bottom,
        var(--color-bg-secondary) 0%,
        var(--color-bg) 100%
    );
}

.systems-hero__title {
    display: flex;
    align-items: center;
    gap: .7rem;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 800;
    color: var(--color-text-primary);
    margin: .5rem 0 .8rem;
}

.systems-hero__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    height: 2rem;
    padding: 0 .5rem;
    background: var(--color-primary);
    color: #fff;
    font-size: .8rem;
    font-weight: 700;
    border-radius: 999px;
}

.systems-hero__desc {
    color: var(--color-text-secondary);
    font-size: 1rem;
    max-width: 56ch;
    margin: 0 0 1.5rem;
    line-height: 1.6;
}

/* Arama kutusu */
.systems-search-wrap {
    position: relative;
    max-width: 440px;
}

.systems-search-icon {
    position: absolute;
    left: .85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-muted);
    pointer-events: none;
}

.systems-search {
    width: 100%;
    padding: .65rem 3.5rem .65rem 2.4rem;
    border: 1.5px solid var(--color-border);
    border-radius: 8px;
    font-size: .95rem;
    background: var(--color-bg);
    color: var(--color-text-primary);
    transition: border-color .2s, box-shadow .2s;
}

.systems-search:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-alpha);
}

.systems-search-hint {
    position: absolute;
    right: .75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: .68rem;
    padding: .15rem .4rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-muted);
    pointer-events: none;
}

/* ── Layout: 2 kolon ─────────────────────────────────────── */
.systems-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 2.5rem;
    align-items: start;
    padding-top: 2rem;
    padding-bottom: 4rem;
}

@media (max-width: 900px) {
    .systems-layout {
        grid-template-columns: 1fr;
    }
}

/* ── Sidebar ─────────────────────────────────────────────── */
.systems-sidebar {
    position: sticky;
    top: 5rem;
    max-height: calc(100vh - 7rem);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.systems-sidebar__inner {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.2rem 1rem;
}

.systems-sidebar__heading {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin: 0 0 .6rem .3rem;
}

.systems-sidebar__list,
.systems-sidebar__sub,
.systems-sidebar__quick {
    list-style: none;
    padding: 0;
    margin: 0;
}

.systems-sidebar__item {
    margin-bottom: .15rem;
}

.systems-sidebar__link {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .45rem .5rem;
    border-radius: 6px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: .88rem;
    font-weight: 500;
    transition: background .15s, color .15s;
}

.systems-sidebar__link:hover,
.systems-sidebar__link.active {
    background: var(--color-primary-alpha);
    color: var(--color-primary);
}

.systems-sidebar__link.active {
    font-weight: 700;
}

.systems-sidebar__link-icon { flex-shrink: 0; color: var(--color-muted); }
.systems-sidebar__link.active .systems-sidebar__link-icon { color: var(--color-primary); }

.systems-sidebar__link-text { flex: 1; }

.systems-sidebar__count {
    font-size: .7rem;
    font-weight: 700;
    color: var(--color-muted);
    background: var(--color-bg-tertiary);
    border-radius: 999px;
    padding: .05rem .4rem;
    line-height: 1.6;
}

/* Sub-links (sistem isimleri) */
.systems-sidebar__sub {
    padding-left: 1.6rem;
    margin-bottom: .4rem;
    display: none; /* JS açar */
}

.systems-sidebar__item.expanded .systems-sidebar__sub {
    display: block;
}

.systems-sidebar__sub-link {
    display: block;
    padding: .25rem .3rem;
    font-size: .8rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: 4px;
    transition: color .15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.systems-sidebar__sub-link:hover { color: var(--color-primary); }
.systems-sidebar__sub-link.active { color: var(--color-primary); font-weight: 600; }

/* Hızlı bağlantılar */
.systems-sidebar__quick-link {
    display: flex;
    align-items: center;
    gap: .4rem;
    padding: .35rem .3rem;
    font-size: .82rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: 4px;
    transition: color .15s;
}

.systems-sidebar__quick-link:hover { color: var(--color-primary); }

@media (max-width: 900px) {
    .systems-sidebar {
        position: static;
        max-height: none;
    }

    .systems-sidebar__inner {
        display: flex;
        flex-wrap: wrap;
        gap: .4rem;
        padding: .8rem;
        background: transparent;
        border: none;
        padding: 0;
    }

    .systems-sidebar__heading,
    .systems-sidebar__sub,
    .systems-sidebar__footer { display: none; }

    .systems-sidebar__list { display: flex; flex-wrap: wrap; gap: .35rem; }
    .systems-sidebar__item { margin: 0; }
    .systems-sidebar__link {
        padding: .35rem .8rem;
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: 999px;
        font-size: .82rem;
    }
    .systems-sidebar__link-icon { display: none; }
}

/* ── Kategori Bölümü ─────────────────────────────────────── */
.systems-category-section {
    margin-bottom: 3.5rem;
    scroll-margin-top: 6rem;
}

.systems-category-header { margin-bottom: 1.2rem; }

.systems-category-title {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    padding-bottom: .7rem;
    border-bottom: 2px solid var(--color-primary);
    margin: 0;
}

.systems-category-icon { color: var(--color-primary); flex-shrink: 0; }

.systems-category-count {
    margin-left: auto;
    font-size: .75rem;
    font-weight: 600;
    color: var(--color-muted);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: .1rem .5rem;
}

/* ── Sistem Kartı ────────────────────────────────────────── */
.system-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.5rem 1.6rem;
    margin-bottom: 1.2rem;
    scroll-margin-top: 6rem;
    transition: box-shadow .2s;
}

.system-card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,.07);
}

/* Başlık satırı */
.system-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: .75rem;
    margin-bottom: .6rem;
}

.system-card__title-row {
    display: flex;
    align-items: center;
    gap: .6rem;
    flex-wrap: wrap;
}

.system-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
}

.system-card__category-badge {
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    padding: .2rem .55rem;
    background: var(--color-primary-alpha);
    color: var(--color-primary);
    border-radius: 999px;
}

.system-card__anchor {
    color: var(--color-muted);
    padding: .25rem;
    border-radius: 4px;
    transition: color .15s, background .15s;
    flex-shrink: 0;
    line-height: 1;
}

.system-card__anchor:hover { color: var(--color-primary); background: var(--color-primary-alpha); }

.system-card__desc {
    color: var(--color-text-secondary);
    font-size: .92rem;
    line-height: 1.65;
    margin: 0 0 1rem;
}

/* ── Örnekler ────────────────────────────────────────────── */
.system-card__examples { margin-bottom: 1rem; }

/* Tab başlıkları */
.example-tabs {
    display: flex;
    gap: .3rem;
    flex-wrap: wrap;
    margin-bottom: .6rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: .3rem;
}

.example-tab {
    padding: .3rem .75rem;
    font-size: .8rem;
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: 6px 6px 0 0;
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: color .15s, background .15s, border-color .15s;
}

.example-tab:hover { color: var(--color-primary); background: var(--color-primary-alpha); }

.example-tab.active,
.example-tab[aria-selected="true"] {
    color: var(--color-primary);
    background: var(--color-primary-alpha);
    border-color: var(--color-border);
    border-bottom-color: transparent;
    font-weight: 700;
}

/* Tab paneli */
.example-panel { display: block; }
.example-panel[hidden] { display: none; }

.example-label {
    display: flex;
    align-items: center;
    gap: .4rem;
    font-size: .78rem;
    font-weight: 600;
    color: var(--color-muted);
    margin: 0 0 .5rem;
}

/* Kod bloğu */
.code-wrap {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.code-lang-badge {
    position: absolute;
    top: .5rem;
    left: .75rem;
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: .06em;
    color: var(--color-muted);
    background: var(--color-bg-tertiary);
    border-radius: 4px;
    padding: .1rem .4rem;
    pointer-events: none;
    z-index: 2;
}

.code-copy-btn {
    position: absolute;
    top: .45rem;
    right: .55rem;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: .3rem;
    padding: .28rem .65rem;
    font-size: .75rem;
    font-weight: 500;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 5px;
    color: var(--color-muted);
    cursor: pointer;
    transition: color .15s, background .15s;
}

.code-copy-btn:hover { color: var(--color-text-primary); background: var(--color-bg-secondary); }
.code-copy-btn.copied { color: var(--color-success, #16a34a); }

.code-block {
    margin: 0;
    padding: 2.4rem .9rem .9rem;
    overflow-x: auto;
    font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
    font-size: .82rem;
    line-height: 1.65;
    background: var(--color-bg-secondary);
    tab-size: 4;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.code-block code {
    display: block;
    white-space: pre;
    color: var(--color-text-primary);
}

/* ── Kart Footer ─────────────────────────────────────────── */
.system-card__footer {
    margin-top: .8rem;
    padding-top: .8rem;
    border-top: 1px solid var(--color-border);
}

.system-card__more-link {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-size: .82rem;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: gap .2s;
}

.system-card__more-link:hover { gap: .55rem; }

/* ── Arama: bulunamadı mesajı ───────────────────────────── */
.systems-no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-muted);
}

.systems-no-results svg { margin: 0 auto 1rem; display: block; }
.systems-no-results p { margin: 0 0 1rem; }

/* ── Gizli sistem kartı (arama filtresi) ─────────────────── */
.system-card.hidden-by-search { display: none; }
.systems-category-section.hidden-by-search { display: none; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 640px) {
    .system-card { padding: 1.1rem 1rem; }
    .system-card__title { font-size: .95rem; }
    .systems-hero { padding: 2rem 0 1.5rem; }
}