/* Úvod homepage — blok `uvod` (tpl/homepage.php). Předloha: lovable/src/components/sections/Hero.tsx.
 *
 * Přes celou výšku okna: video vinice (paralaxa z js/uvod.js), „noc se zvedá, svítá“ — tmavá
 * vrstva mizí a zespodu prosvítá šampaňový přechod se sluncem (od 3 s), přes to clona pro
 * kontrast textu a zrnitost. Nadpis se skládá po slovech (uvod__slovo + --zpozdeni).
 * Výhody dole se na telefonu posouvají do strany, od 1024 px jsou čtyři sloupce.
 */

.uvod {
    position: relative;
    min-height: 100svh;
    overflow: hidden;
    background: var(--c-cerna-hluboka);
    color: var(--c-papir);
}
.uvod__pozadi {
    position: absolute;
    inset: 0;
    will-change: transform;
}
.uvod__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.uvod__noc {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: var(--c-cerna-hluboka);
    opacity: 0.62;
    pointer-events: none;
    animation: uvod-noc 5.8s 3s var(--ease) forwards;
}
.uvod__usvit {
    position: absolute;
    inset: 0;
    z-index: 2;
    background:
        radial-gradient(ellipse 48% 25% at 24% 12%, color-mix(in oklab, var(--c-sampan) 48%, transparent), transparent 72%),
        linear-gradient(180deg, color-mix(in oklab, var(--c-sampan) 18%, transparent), transparent 40%);
    mix-blend-mode: screen;
    opacity: 0;
    pointer-events: none;
    animation: uvod-usvit 5.8s 3s ease-out forwards;
}
.uvod__slunce {
    position: absolute;
    left: 24%;
    top: 1%;
    width: clamp(16rem, 34vw, 34rem);
    aspect-ratio: 1;
    border-radius: 50%;
    background: radial-gradient(circle, color-mix(in oklab, var(--c-sampan) 65%, transparent), transparent 68%);
    filter: blur(1.6rem);
    opacity: 0;
    animation: uvod-slunce 6.4s 3s ease-out forwards;
}
.uvod__clona {
    position: absolute;
    inset: 0;
    z-index: 3;
    background: linear-gradient(180deg,
        color-mix(in oklab, var(--c-cerna-hluboka) 55%, transparent) 0%,
        transparent 35%,
        color-mix(in oklab, var(--c-cerna-hluboka) 70%, transparent) 72%,
        var(--c-cerna-hluboka) 100%);
}
.uvod.zrnito::after { z-index: 4; }

.uvod__obal {
    position: relative;
    z-index: 5;
    display: flex;
    flex-direction: column;
    min-height: 100svh;
    max-width: var(--sirka);
    margin: 0 auto;
    padding: 7rem var(--okraj) 1.75rem;
}
.uvod__text {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 56rem;
}
.uvod__nadpis {
    max-width: 15ch;
    margin: 1.25rem 0 0;
    font-size: 2.9rem;
    font-weight: 700;
    line-height: 1.03;
}
.uvod__zlate { color: var(--c-sampan); }
.uvod__slovo {
    display: inline-block;
    opacity: 0;
    animation: uvod-slovo 1.1s cubic-bezier(0.2, 0.7, 0.1, 1) forwards;
    animation-delay: var(--zpozdeni, 0s);
}
.uvod__rukopis.uvod__slovo,
.uvod__veta.uvod__slovo,
.uvod__akce.uvod__slovo { display: block; }
.uvod__akce.uvod__slovo { display: flex; }
.uvod__veta {
    max-width: 47ch;
    margin: 1.5rem 0 0;
    color: color-mix(in oklab, var(--c-papir) 90%, transparent);
    font-size: 1.12rem;
    font-weight: 500;
    line-height: 1.65;
}
.uvod__akce {
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 2rem;
}
.uvod__tlacitko { min-height: 3.5rem; padding-inline: 1.75rem; font-size: 0.9rem; }
.uvod__tlacitko.tlacitko--obrys-svetly { -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.uvod__sipka { font-family: var(--font-rukopis); font-size: 1.25rem; line-height: 1; transition: transform 0.3s ease; }
.uvod__tlacitko:hover .uvod__sipka { transform: translateX(4px); }

/* výhody */
.uvod__vyhody {
    display: flex;
    margin: 1.5rem calc(-1 * 1.5rem) 0;
    padding: 0;
    list-style: none;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    border-block: 1px solid color-mix(in oklab, var(--c-papir) 15%, transparent);
    background: color-mix(in oklab, var(--c-cerna-hluboka) 35%, transparent);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}
.uvod__vyhody::-webkit-scrollbar { display: none; }
.uvod__vyhoda {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 17rem;
    min-height: 6rem;
    padding: 1rem;
    scroll-snap-align: start;
    border-right: 1px solid color-mix(in oklab, var(--c-papir) 15%, transparent);
}
.uvod__vyhoda:last-child { border-right: 0; }
.uvod__ikona {
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    flex: none;
    border: 1px solid color-mix(in oklab, var(--c-sampan) 45%, transparent);
    border-radius: 50%;
    color: var(--c-sampan);
    font-size: 1rem;
}
.uvod__ikona .ikona { stroke-width: 1.7; }
.uvod__vyhoda-nazev { margin: 0; font-size: 0.9rem; font-weight: 600; }
.uvod__vyhoda-popis { margin: 0.25rem 0 0; color: color-mix(in oklab, var(--c-papir) 75%, transparent); font-size: 0.78rem; line-height: 1.25rem; }

.uvod__dolu {
    position: absolute;
    right: 2rem;
    bottom: 1.5rem;
    z-index: 5;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    color: var(--c-sampan);
    font-family: var(--font-rukopis);
    font-size: 1.35rem;
    text-decoration: none;
}
.uvod__dolu-sipka { font-size: 1.5rem; line-height: 1; }
.uvod__dolu-cara { width: 1px; height: 2.5rem; background: color-mix(in oklab, var(--c-sampan) 70%, transparent); animation: uvod-pulz 2s ease-in-out infinite; }

@keyframes uvod-slovo {
    from { opacity: 0; transform: translateY(0.6em); filter: blur(10px); }
    to { opacity: 1; transform: translateY(0); filter: blur(0); }
}
@keyframes uvod-noc { 0%, 15% { opacity: 0.62; } 100% { opacity: 0; } }
@keyframes uvod-usvit { from { opacity: 0; } to { opacity: 0.72; } }
@keyframes uvod-slunce {
    0% { transform: translate3d(-50%, 6rem, 0) scale(0.55); opacity: 0; }
    18% { opacity: 0; }
    100% { transform: translate3d(-50%, 0, 0) scale(1); opacity: 0.9; }
}
@keyframes uvod-pulz { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

@media (min-width: 640px) {
    .uvod__akce { flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 767px) {
    .uvod__usvit {
        background:
            radial-gradient(ellipse 75% 24% at 77% 11%, color-mix(in oklab, var(--c-sampan) 44%, transparent), transparent 72%),
            linear-gradient(180deg, color-mix(in oklab, var(--c-sampan) 16%, transparent), transparent 35%);
    }
    .uvod__slunce { left: 77%; top: 0; }
}
@media (min-width: 768px) {
    .uvod__nadpis { font-size: 4.7rem; }
    .uvod__veta { font-size: 1.22rem; }
    .uvod__dolu { display: flex; }
}
@media (min-width: 1024px) {
    .uvod__obal { padding-top: 8rem; }
    .uvod__nadpis { font-size: 5.15rem; }
    .uvod__vyhody { display: grid; grid-template-columns: repeat(4, 1fr); margin-inline: 0; overflow: visible; }
    .uvod__vyhoda { min-width: 0; padding-inline: 1.25rem; border-left: 0; }
    .uvod__vyhoda:first-child { border-left: 1px solid color-mix(in oklab, var(--c-papir) 15%, transparent); }
    .uvod__vyhoda:last-child { border-right: 1px solid color-mix(in oklab, var(--c-papir) 15%, transparent); }
}
@media (prefers-reduced-motion: reduce) {
    .uvod__slovo, .uvod__usvit, .uvod__slunce { animation: none !important; opacity: 1; }
    .uvod__noc { animation: none !important; opacity: 0; }
}


/* ---------- Rozcestník — blok `cesty` (Paths.tsx) ---------- */

.cesty {
    display: grid;
    grid-template-columns: 1fr;
    border-bottom: 1px solid color-mix(in oklab, var(--c-sampan) 15%, transparent);
    background: var(--c-cerna-hluboka);
    color: var(--c-papir);
}
.cesty__dlazdice {
    position: relative;
    display: block;
    height: 20rem;
    overflow: hidden;
    border-right: 1px solid color-mix(in oklab, var(--c-sampan) 15%, transparent);
    border-bottom: 1px solid color-mix(in oklab, var(--c-sampan) 15%, transparent);
    color: inherit;
    text-decoration: none;
    transition: background-color 0.5s ease;
}
.cesty__dlazdice:hover,
.cesty__dlazdice:focus-visible { background: var(--c-grafit); }
.cesty__cislo {
    position: absolute;
    right: 1.25rem;
    top: 1rem;
    z-index: 2;
    color: color-mix(in oklab, var(--c-sampan) 85%, transparent);
    font-family: var(--font-rukopis);
    font-size: 1.55rem;
    line-height: 1;
}
.cesty__obrazek {
    position: absolute;
    inset: 0.5rem 1.25rem auto;
    height: 11rem;
    transition: transform 0.7s ease;
}
.cesty__obrazek::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 7rem;
    height: 7rem;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: color-mix(in oklab, var(--c-sampan) 5%, transparent);
    filter: blur(32px);
    transition: background-color 0.5s ease;
}
.cesty__obrazek img {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.9;
    filter: drop-shadow(0 16px 28px rgb(0 0 0 / 0.3));
    transition: opacity 0.5s ease;
}
.cesty__dlazdice:hover .cesty__obrazek { transform: translateY(-4px) scale(1.035); }
.cesty__dlazdice:hover .cesty__obrazek img { opacity: 1; }
.cesty__dlazdice:hover .cesty__obrazek::before { background: color-mix(in oklab, var(--c-sampan) 10%, transparent); }
.cesty__text {
    position: absolute;
    inset: auto 0 0;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.5rem;
}
.cesty__popis-obal { display: block; }
.cesty__rukopis { display: block; margin-bottom: 0.5rem; font-size: 1.5rem; }
.cesty__nazev { display: block; font-size: 1.45rem; font-weight: 700; line-height: 1.25; }
.cesty__popis { display: block; margin-top: 0.5rem; color: color-mix(in oklab, var(--c-papir) 80%, transparent); font-size: 0.875rem; font-weight: 500; line-height: 1.25rem; }
.cesty__sipka {
    width: 3.5rem;
    height: 1.5rem;
    flex: none;
    fill: none;
    stroke: var(--c-sampan);
    stroke-width: 1.2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.45s var(--ease);
}
.cesty__dlazdice:hover .cesty__sipka { transform: translateX(0.3rem) rotate(-2deg); }
.cesty__linka {
    position: absolute;
    inset: auto 0 0;
    height: 1px;
    background: var(--c-sampan);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.7s ease;
}
.cesty__dlazdice:hover .cesty__linka { transform: scaleX(1); }

@media (min-width: 640px) {
    .cesty { grid-template-columns: repeat(2, 1fr); }
    .cesty__dlazdice { height: 21rem; }
}
@media (min-width: 768px) {
    .cesty__obrazek { height: 12rem; }
    .cesty__text { padding: 1.75rem; }
    .cesty__nazev { font-size: 1.55rem; }
}
@media (min-width: 1024px) {
    .cesty { grid-template-columns: repeat(4, 1fr); }
    .cesty__dlazdice { border-bottom: 0; }
}