/* Hlavní layout: pozadí, header, hero, navigace, sekce kategorií. */

/* ============ TEXT SELECTION ============
 * Chrome (header, nav, pillsy, status, footer) selection nedává smysl
 * a vypadá ošklivě. Selection povolujeme jen tam, kde se může hodit
 * něco zkopírovat — uvnitř karet (názvy, popisy) a v textových inputech. */
body {
    -webkit-user-select: none;
    user-select: none;
}
.card,
input,
textarea {
    -webkit-user-select: text;
    user-select: text;
}

/* ============ POZADÍ ============ */

.hub-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: linear-gradient(135deg, var(--hub-bg-gradient-from), var(--hub-bg-gradient-to));
    overflow: hidden;
}

.hub-bg__blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.9;
    will-change: transform;
}

.hub-bg__blob--1 {
    width: 520px; height: 520px;
    top: -120px; left: -120px;
    background: var(--hub-blob-1);
    animation: float-1 22s ease-in-out infinite;
}
.hub-bg__blob--2 {
    width: 600px; height: 600px;
    top: 30%; right: -180px;
    background: var(--hub-blob-2);
    animation: float-2 28s ease-in-out infinite;
}
.hub-bg__blob--3 {
    width: 420px; height: 420px;
    bottom: -150px; left: 30%;
    background: var(--hub-blob-3);
    animation: float-3 26s ease-in-out infinite;
}

@keyframes float-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%      { transform: translate(80px, 60px) scale(1.1); }
}
@keyframes float-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%      { transform: translate(-100px, 40px) scale(0.95); }
}
@keyframes float-3 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%      { transform: translate(60px, -80px) scale(1.08); }
}

/* ============ HEADER ============ */

.hub-header {
    position: sticky;
    top: 12px;
    z-index: 50;
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 12px;
    margin: 12px;
    padding: 10px 16px;
    border-radius: 18px;
}

.hub-header__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--hub-text);
}
.hub-header__logo {
    height: 28px;
    width: auto;
    user-select: none;
}
[data-theme="dark"] .hub-header__logo {
    filter: brightness(0) invert(1);  /* logo je tmavé — v darkmodu invertujeme. */
}

.hub-header__title {
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    color: var(--hub-text);
}

.hub-header__search {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 12px;
    background: var(--hub-link-chip-bg);
    border: 1px solid transparent;
    transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.hub-header__search:focus-within {
    background: var(--hub-surface-strong);
    border-color: var(--hub-border-strong);
    box-shadow: 0 0 0 4px var(--hub-accent-soft);
}
.hub-header__search-icon { color: var(--hub-text-muted); flex-shrink: 0; }
.hub-header__search input { font-size: 0.95rem; }
.hub-header__search input::placeholder { color: var(--hub-text-faint); }
/* Skryj nativní křížek u type="search" — používáme vlastní tlačítko. */
.hub-header__search input[type="search"]::-webkit-search-cancel-button,
.hub-header__search input[type="search"]::-webkit-search-decoration { -webkit-appearance: none; appearance: none; }

.hub-header__search-clear {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px; height: 22px;
    border-radius: 6px;
    color: var(--hub-text-muted);
    background: transparent;
    border: 0;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
}
.hub-header__search-clear:hover {
    background: var(--hub-link-chip-hover);
    color: var(--hub-text);
}
/* Když je input prázdný (placeholder viditelný), schovej křížek a ukaž kbd "/". */
.hub-header__search input:placeholder-shown ~ .hub-header__search-clear { display: none; }
/* Když je v inputu text, místo kbd "/" se zobrazí křížek. */
.hub-header__search input:not(:placeholder-shown) ~ .hub-header__kbd { display: none; }

.hub-header__kbd {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 6px;
    background: var(--hub-link-chip-hover);
    color: var(--hub-text-muted);
    line-height: 1.4;
}

.hub-header__theme {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 10px;
    color: var(--hub-text-muted);
    transition: background 0.2s, color 0.2s, transform 0.2s;
}
.hub-header__theme:hover {
    background: var(--hub-link-chip-hover);
    color: var(--hub-text);
    transform: rotate(15deg);
}
.theme-icon { display: none; }
[data-theme="light"] .theme-icon--moon { display: block; }
[data-theme="dark"]  .theme-icon--sun  { display: block; }

/* ============ LANGUAGE SWITCHER ============ */

.lang-switcher { position: relative; }

.lang-switcher__trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 40px;
    padding: 0 10px;
    border-radius: 10px;
    color: var(--hub-text-muted);
    transition: background 0.2s, color 0.2s;
}
.lang-switcher__trigger:hover {
    background: var(--hub-link-chip-hover);
    color: var(--hub-text);
}
.lang-switcher__code {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}
.lang-switcher__caret {
    opacity: 0.7;
    transition: transform 0.2s;
}
.lang-switcher.is-open .lang-switcher__caret { transform: rotate(180deg); }
.lang-switcher.is-open .lang-switcher__trigger {
    background: var(--hub-link-chip-hover);
    color: var(--hub-text);
}

.lang-switcher__menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    margin: 0;
    padding: 6px;
    list-style: none;
    min-width: 180px;
    background: var(--hub-surface-strong);
    border: 1px solid var(--hub-border-strong);
    border-radius: 12px;
    box-shadow: var(--hub-shadow-md);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 60;
}
.lang-switcher__menu[hidden] { display: none; }

.lang-switcher__option {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--hub-text);
    font-size: 0.9rem;
    text-align: left;
    transition: background 0.15s, color 0.15s;
}
.lang-switcher__option:hover { background: var(--hub-link-chip-hover); }
.lang-switcher__option[aria-checked="true"] {
    background: var(--hub-accent-soft);
    color: var(--hub-accent);
    font-weight: 600;
}
.lang-switcher__flag { font-size: 1.05rem; line-height: 1; }
.lang-switcher__short {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--hub-text-faint);
    letter-spacing: 0.04em;
}
.lang-switcher__option[aria-checked="true"] .lang-switcher__short {
    color: var(--hub-accent);
}

/* ============ MAIN ============ */

.hub-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px 24px 80px;
}

/* ============ HERO ============ */

.hub-hero {
    padding: 32px 0 24px;
    text-align: center;
}
.hub-hero__title {
    font-size: clamp(1.8rem, 4vw + 1rem, 3rem);
    line-height: 1.1;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}
.hub-hero__title-accent {
    background: linear-gradient(135deg, var(--hub-accent), var(--hub-secondary-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding-right: 0.05em;  /* zabrání ořezu glyfů gradientem */
}
.hub-hero__subtitle {
    font-size: clamp(0.95rem, 0.5vw + 0.85rem, 1.15rem);
    color: var(--hub-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ============ NAVIGACE PILLS ============ */

/* Wrap je jedna glass lišta: [prev] [All pill (pin)] [scrollable nav] [next].
 * Glass styling je tady, aby všechny prvky vypadaly jako jeden celek. */
.hub-nav-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    border-radius: 16px;
    margin-bottom: 24px;
}

.hub-nav__arrow {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--hub-link-chip-bg);
    color: var(--hub-text-muted);
    opacity: 0.85;
    transition: opacity 0.18s, background 0.15s, color 0.15s;
}
.hub-nav__arrow[hidden] { display: none; }
.hub-nav__arrow:hover {
    opacity: 1;
    background: var(--hub-link-chip-hover);
    color: var(--hub-text);
}

/* Na touch zařízeních scroll funguje gestem, šipky jen překáží. */
@media (pointer: coarse) {
    .hub-nav__arrow { display: none; }
}

.hub-nav {
    --nav-fade-start: 0px;
    --nav-fade-end: 0px;
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x proximity;
    /* Fade-mask hint, že je obsah scrollovatelný horizontálně.
     * Levá/pravá strana se zapíná dle scrollLeft (řízeno z JS). */
    -webkit-mask-image: linear-gradient(
        to right,
        transparent 0,
        #000 var(--nav-fade-start),
        #000 calc(100% - var(--nav-fade-end)),
        transparent 100%
    );
            mask-image: linear-gradient(
        to right,
        transparent 0,
        #000 var(--nav-fade-start),
        #000 calc(100% - var(--nav-fade-end)),
        transparent 100%
    );
}
.hub-nav::-webkit-scrollbar { display: none; }

.pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--hub-text-muted);
    background: transparent;
    white-space: nowrap;
    scroll-snap-align: start;
    transition: background 0.2s, color 0.2s, transform 0.15s;
}
.pill:hover { background: var(--hub-link-chip-bg); color: var(--hub-text); }
.pill[aria-pressed="true"] {
    background: var(--hub-accent);
    color: white;
    box-shadow: 0 6px 16px var(--hub-accent-glow);
}
.pill[aria-pressed="true"] .pill__count {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}
.pill__count {
    display: inline-block;
    min-width: 20px;
    padding: 1px 7px;
    border-radius: 999px;
    background: var(--hub-link-chip-bg);
    color: var(--hub-text-faint);
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
}

/* ============ STATUS BAR (filtry) ============ */

.hub-status {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding: 0 4px;
    font-size: 0.9rem;
    color: var(--hub-text-muted);
}
.hub-status[hidden] { display: none; }
.hub-status__clear {
    padding: 4px 10px;
    border-radius: 8px;
    background: var(--hub-link-chip-bg);
    color: var(--hub-text);
    font-size: 0.85rem;
    transition: background 0.15s;
}
.hub-status__clear:hover { background: var(--hub-link-chip-hover); }

/* ============ KATEGORIE ============ */

.hub-categories { display: flex; flex-direction: column; gap: 40px; }

.category[hidden] { display: none; }

.category__header { margin-bottom: 16px; padding: 0 4px; }
.category__title {
    font-size: clamp(1.25rem, 1vw + 1rem, 1.6rem);
    margin-bottom: 4px;
}
.category__description { color: var(--hub-text-muted); font-size: 0.95rem; }

.category__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

/* ============ EMPTY STATE ============ */

.hub-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    padding: 48px 24px;
    border-radius: 16px;
    color: var(--hub-text-muted);
}
.hub-empty[hidden] { display: none; }
.hub-empty svg { color: var(--hub-text-faint); }
.hub-empty h2 { font-size: 1.2rem; color: var(--hub-text); }

/* ============ FOOTER ============ */

.hub-footer {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px 32px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    color: var(--hub-text-faint);
    font-size: 0.85rem;
}

/* ============ RESPONSIVE ============ */

/* Tablet a níž */
@media (max-width: 768px) {
    .hub-header {
        grid-template-columns: auto 1fr auto;
        padding: 8px 12px;
        gap: 8px;
        margin: 8px;
    }
    .hub-header__title { display: none; }   /* místo pro search */
    .hub-header__kbd   { display: none; }
    .hub-header__search { padding: 8px 12px; }
    .lang-switcher__code,
    .lang-switcher__caret { display: none; }
    .lang-switcher__trigger { padding: 0 8px; gap: 0; }
    .hub-header__search input { font-size: 16px; }   /* zabrání zoom-in na iOS */

    .hub-main { padding: 16px 16px 60px; }
    .hub-hero { padding: 16px 0 20px; }
    .hub-nav-wrap { margin-bottom: 20px; padding: 8px; }

    .category__grid {
        grid-template-columns: 1fr;   /* 1 sloupec na mobilu */
        gap: 12px;
    }
}

/* Velmi malé telefony */
@media (max-width: 380px) {
    .hub-header { margin: 6px; padding: 6px 10px; }
    .hub-header__logo { height: 24px; }
    .hub-main { padding: 12px 12px 48px; }
}