:root {
    --bg:          #f7f8fa;
    --bg-card:     #ffffff;
    --bg-elev:     #ffffff;
    --text:        #1a1d24;
    --text-soft:   #5b6472;
    --border:      #e6e8ec;
    --accent:      #4f46e5;
    --accent-soft: #eef0fe;
    --shadow:      0 1px 2px rgba(16, 24, 40, .04), 0 4px 16px rgba(16, 24, 40, .06);
    --shadow-hover:0 6px 24px rgba(79, 70, 229, .15);
    --radius:      14px;
}

[data-theme="dark"] {
    --bg:          #0f1117;
    --bg-card:     #171a21;
    --bg-elev:     #1c2029;
    --text:        #e8eaed;
    --text-soft:   #9aa3b2;
    --border:      #262b35;
    --accent:      #7c7cf0;
    --accent-soft: #1e2030;
    --shadow:      0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
    --shadow-hover:0 6px 24px rgba(124, 124, 240, .25);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background .25s ease, color .25s ease;
}

/* ---------- Header ---------- */
.header {
    max-width: 960px;
    margin: 0 auto;
    padding: 56px 24px 0;
}

.header__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.header__title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -.02em;
}

.header__subtitle {
    color: var(--text-soft);
    margin-top: 8px;
    font-size: 1.05rem;
}

.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-elev);
    color: var(--text);
    font-size: 1.1rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: transform .2s ease, border-color .2s ease;
    flex-shrink: 0;
}
.theme-toggle:hover { transform: scale(1.08); border-color: var(--accent); }

/* ---------- Search ---------- */
.search {
    position: relative;
    margin-top: 28px;
}
.search__icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-soft);
    pointer-events: none;
}
.search__input {
    width: 100%;
    padding: 14px 18px 14px 48px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text);
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.search__input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---------- Filters ---------- */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}
.chip {
    padding: 8px 16px;
    font-size: .9rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--text-soft);
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    transition: all .18s ease;
}
.chip:hover { color: var(--text); border-color: var(--accent); }
.chip--active {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
}

/* ---------- Content ---------- */
.content {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 24px 24px;
}

.category { margin-bottom: 44px; }
.category[hidden] { display: none; }

.category__title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 18px;
}
.category__icon { font-size: 1.3rem; }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

/* ---------- Card ---------- */
.card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-decoration: none;
    color: inherit;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}
.card[hidden] { display: none; }

.card__badge {
    width: 44px;
    height: 44px;
    border-radius: 11px;
    background: var(--accent-soft);
    display: grid;
    place-items: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}
.card__body {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}
.card__title {
    font-weight: 600;
    font-size: .98rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.card__desc {
    font-size: .82rem;
    color: var(--text-soft);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.card__arrow {
    color: var(--text-soft);
    flex-shrink: 0;
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity .2s ease, transform .2s ease, color .2s ease;
}
.card:hover .card__arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--accent);
}

/* ---------- Empty ---------- */
.empty {
    text-align: center;
    color: var(--text-soft);
    padding: 60px 0;
    font-size: 1.05rem;
}

/* ---------- Footer ---------- */
.footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px;
    text-align: center;
    color: var(--text-soft);
    font-size: .85rem;
    border-top: 1px solid var(--border);
}

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
    .header { padding-top: 36px; }
    .header__title { font-size: 1.6rem; }
    .grid { grid-template-columns: 1fr; }
}