/* SOPHISTICO — Design 2: quiet minimal (metacci-inspired) */

:root {
    --bg: #fafaf8;
    --ink: #111111;
    --muted: #6f6f6c;
    --line: #e4e4e0;
    --radius: 20px;
    --pad: clamp(1.5rem, 5vw, 5rem);
    --font: 'Instrument Sans', 'Helvetica Neue', Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 1.02rem;
}

::selection {
    background: var(--ink);
    color: var(--bg);
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 var(--pad);
}

/* ---------- Preloader ---------- */

.preloader {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 3000;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 3rem;
    transition: opacity 0.6s ease, visibility 0.6s;
}

.preloader.done {
    opacity: 0;
    visibility: hidden;
}

.preloader .pct {
    font-size: clamp(4rem, 12vw, 9rem);
    font-weight: 500;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--ink);
}

/* ---------- Cross-page transitions (SPA feel) ---------- */

@view-transition {
    navigation: auto;
}

/* Stará stránka zůstává celou dobu vidět, nová se přes ni prolne.
   Nikdy není prázdný moment — obsah nezmizí a neobjeví se, jen se vymění. */
::view-transition-old(root) {
    animation: none;
    mix-blend-mode: normal;
}

::view-transition-new(root) {
    animation: page-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
    mix-blend-mode: normal;
}

/* Nav a topbar mají vlastní snímek, takže s obsahem stránky
   neodplouvají — po celou dobu přechodu zůstávají stát a vidět. */
::view-transition-group(tube-nav),
::view-transition-group(topbar) {
    z-index: 2000;
}

::view-transition-old(tube-nav),
::view-transition-new(tube-nav),
::view-transition-old(topbar),
::view-transition-new(topbar) {
    animation: none;
    opacity: 1;
    mix-blend-mode: normal;
}

@keyframes page-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Nav a topbar zůstávají při přechodu na místě */
.tube-nav {
    view-transition-name: tube-nav;
}

.topbar {
    view-transition-name: topbar;
}

/* Aktivní pilulka se mezi stránkami plynule přesune (SPA efekt).
   Jméno nese odkaz s .active — na každé stránce je to jiný <a>,
   ale stejné jméno je spáruje, takže pilulka přejede místo bliknutí. */
.tube-nav a.active {
    view-transition-name: nav-pill;
}

::view-transition-group(nav-pill) {
    animation-duration: 0.42s;
    animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Pilulka jen přejíždí, nesmí se do toho rozplývat */
::view-transition-old(nav-pill),
::view-transition-new(nav-pill) {
    animation: none;
    mix-blend-mode: normal;
}


/* ---------- Navigace v2 ----------
   Nahoře průhledná přes hero, po scrollu matná lišta.
   Mezi odkazy klouže indikátor: na hover přejede, po odjetí
   se vrátí na aktivní a mezi stránkami přejede přes view transition. */

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1100;
    display: flex;
    align-items: center;
    gap: 2rem;
    height: 72px;
    padding: 0 var(--pad);
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, height 0.3s ease;
}

.topbar.scrolled {
    height: 62px;
    background: rgba(250, 250, 248, 0.82);
    border-bottom-color: var(--line);
    box-shadow: 0 1px 0 rgba(17, 17, 17, 0.03), 0 12px 32px -20px rgba(17, 17, 17, 0.25);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
}

.topbar .logo {
    display: flex;
    align-items: center;
    flex: none;
    height: 44px;
    padding: 0 0.25rem;
    margin-left: -0.25rem;
    border-radius: 6px;
}

.topbar .logo img {
    height: 16px;
    width: auto;
    display: block;
    transition: opacity 0.2s ease;
}

.topbar .logo:hover img {
    opacity: 0.6;
}

.main-nav {
    position: relative;
    margin-left: auto;
}

.main-nav ul {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 0.15rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    display: flex;
    align-items: center;
    height: 40px;
    padding: 0 1rem;
    border-radius: 999px;
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: -0.005em;
    color: var(--muted);
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: color 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--ink);
}

.main-nav a.active {
    font-weight: 600;
}

/* Klouzavý indikátor pod odkazy — pozici mu dává JS */
.nav-indicator {
    position: absolute;
    top: 0;
    left: 0;
    height: 40px;
    width: 0;
    border-radius: 999px;
    background: rgba(17, 17, 17, 0.06);
    opacity: 0;
    transform: translateX(var(--x, 0));
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), width 0.3s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.2s ease;
    view-transition-name: nav-indicator;
    pointer-events: none;
}

.nav-indicator.ready {
    opacity: 1;
}

::view-transition-group(nav-indicator) {
    animation-duration: 0.35s;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

::view-transition-old(nav-indicator),
::view-transition-new(nav-indicator) {
    animation: none;
    mix-blend-mode: normal;
}

.nav-foot {
    display: none;
}

/* CTA se šipkou, která na hover popojede */
.topbar-cta {
    flex: none;
    gap: 0.5rem;
    font-size: 0.88rem;
    padding: 0.6rem 0.95rem 0.6rem 1.25rem;
    white-space: nowrap;
}

.topbar-cta svg {
    transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

.topbar-cta:hover svg {
    transform: translateX(3px);
}

/* Viditelný focus pro klávesnici */
.topbar a:focus-visible,
.nav-toggle:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 3px;
}

/* Hamburger (2 linky → X) */
.nav-toggle {
    display: none;
    position: relative;
    z-index: 1201;
    flex: none;
    width: 44px;
    height: 44px;
    margin-right: -0.5rem;
    padding: 0;
    background: none;
    border: 0;
    border-radius: 8px;
    cursor: pointer;
}

.nav-toggle span {
    position: absolute;
    left: 12px;
    width: 20px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), top 0.3s ease;
}

.nav-toggle span:nth-child(1) { top: 18px; }
.nav-toggle span:nth-child(2) { top: 25px; }

.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { top: 21px; transform: rotate(-45deg); }

@media (max-width: 860px) {
    .topbar {
        gap: 1rem;
        height: 64px;
    }

    .topbar.scrolled {
        height: 58px;
    }

    .topbar .topbar-cta {
        display: none;
    }

    .nav-toggle {
        display: block;
        margin-left: auto;
    }

    /* Logo zůstává vidět i nad otevřeným menu */
    .topbar .logo {
        position: relative;
        z-index: 1201;
    }

    /* Celoobrazovkové menu */
    .main-nav {
        position: fixed;
        inset: 0;
        z-index: 1200;
        margin: 0;
        padding: 6.5rem var(--pad) 2.5rem;
        display: flex;
        flex-direction: column;
        background: var(--bg);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0s linear 0.3s;
    }

    .main-nav.open {
        opacity: 1;
        visibility: visible;
        transition: opacity 0.3s ease, visibility 0s;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .main-nav li {
        border-bottom: 1px solid var(--line);
        opacity: 0;
        transform: translateY(12px);
        transition: opacity 0.35s ease, transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .main-nav.open li {
        opacity: 1;
        transform: none;
    }

    .main-nav.open li:nth-child(1) { transition-delay: 0.05s; }
    .main-nav.open li:nth-child(2) { transition-delay: 0.1s; }
    .main-nav.open li:nth-child(3) { transition-delay: 0.15s; }
    .main-nav.open li:nth-child(4) { transition-delay: 0.2s; }
    .main-nav.open li:nth-child(5) { transition-delay: 0.25s; }

    .main-nav a {
        height: auto;
        padding: 1.1rem 0;
        border-radius: 0;
        font-size: clamp(1.7rem, 7vw, 2.4rem);
        font-weight: 500;
        letter-spacing: -0.02em;
        line-height: 1.1;
    }

    .main-nav a.active {
        font-weight: 600;
    }

    .main-nav a.active::after {
        content: '';
        display: inline-block;
        width: 8px;
        height: 8px;
        margin-left: 0.7rem;
        border-radius: 50%;
        background: var(--ink);
        vertical-align: middle;
    }

    .nav-indicator {
        display: none;
    }

    .nav-foot {
        display: flex;
        flex-direction: column;
        gap: 0.35rem;
        margin-top: auto;
        padding-top: 2rem;
        font-size: 0.95rem;
        color: var(--muted);
    }

    .nav-foot a {
        color: inherit;
        text-decoration: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .topbar, .nav-indicator, .topbar-cta svg, .nav-toggle span, .main-nav, .main-nav li {
        transition: none !important;
    }
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--ink);
    color: var(--bg);
    border: 1px solid var(--ink);
    border-radius: 999px;
    padding: 0.7rem 1.5rem;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.25s, color 0.25s, transform 0.25s;
}

.pill:hover {
    background: transparent;
    color: var(--ink);
    transform: translateY(-2px);
}

.pill.ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--line);
}

.pill.ghost:hover {
    border-color: var(--ink);
}

.pill:focus-visible,
.menu a:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 3px;
}


/* ---------- Type ---------- */

h1, h2, h3 {
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.label {
    font-size: 0.85rem;
    color: var(--muted);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.label::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--ink);
}

.muted {
    color: var(--muted);
}

/* ---------- Reveal ---------- */

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }

/* ---------- Sections ---------- */

section {
    padding: 6rem 0;
}

.section-title {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    max-width: 22ch;
    margin: 1.2rem 0 3rem;
}

/* ---------- Metrics ---------- */

.metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}

.metric {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 2rem;
}

.metric .num {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 500;
    letter-spacing: -0.04em;
    line-height: 1;
}

.metric .cap {
    color: var(--muted);
    margin-top: 0.6rem;
    font-size: 0.92rem;
}

/* ---------- Logo carousel ---------- */

.logos {
    overflow: hidden;
    padding: 2.5rem 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.logos-track {
    display: flex;
    align-items: center;
    gap: 5rem;
    width: max-content;
    animation: slide 35s linear infinite;
}

.logos-track:hover {
    animation-play-state: paused;
}

@keyframes slide {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.logos .plogo {
    flex-shrink: 0;
    height: 64px;
    display: flex;
    align-items: center;
    opacity: 0.45;
    transition: opacity 0.3s;
}

.logos .plogo:hover {
    opacity: 1;
}

.logos .plogo img {
    height: 100%;
    width: auto;
    max-width: 160px;
    object-fit: contain;
    filter: grayscale(1);
}

.logos .plogo:nth-child(-n+16) img {
    filter: brightness(0);
}

/* ---------- Work cards ---------- */

.work-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.work-card {
    display: block;
    text-decoration: none;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s;
}

.work-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.08);
}

.work-card .media {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #ececea;
}

.work-card .media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.work-card:hover .media img {
    transform: scale(1.04);
}

.work-card .media.contain img {
    object-fit: contain;
    background: #fff;
}

.work-card .body {
    padding: 1.6rem 1.8rem 1.8rem;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
}

.work-card h3 {
    font-size: 1.25rem;
}

.work-card .tag {
    font-size: 0.82rem;
    color: var(--muted);
    white-space: nowrap;
}

/* ---------- Phases ---------- */

.phases {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    counter-reset: phase;
}

.phase {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.8rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.phase:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.06);
}

.phase .step {
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 2.5rem;
}

.phase h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
}

.phase p {
    font-size: 0.92rem;
    color: var(--muted);
}

/* ---------- Service list ---------- */

.service-list {
    list-style: none;
    border-top: 1px solid var(--line);
}

.service-line {
    display: grid;
    grid-template-columns: 4rem 1fr auto;
    gap: 1.5rem;
    align-items: center;
    padding: 1.6rem 0.5rem;
    border-bottom: 1px solid var(--line);
    border-radius: 12px;
    transition: background 0.25s, padding 0.25s;
}

.service-line:hover {
    background: #fff;
    padding-left: 1.2rem;
}

.service-line .idx {
    font-size: 0.85rem;
    color: var(--muted);
}

.service-line h3 {
    font-size: clamp(1.2rem, 2.4vw, 1.7rem);
}

.service-line p {
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 0.3rem;
    max-width: 60ch;
}

.service-line .tag {
    font-size: 0.82rem;
    color: var(--muted);
    white-space: nowrap;
}

/* ---------- FAQ ---------- */

.faq-item {
    border-bottom: 1px solid var(--line);
}

.faq-q {
    width: 100%;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--ink);
    text-align: left;
    padding: 1.6rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    cursor: pointer;
}

.faq-q svg {
    flex-shrink: 0;
    transition: transform 0.3s;
}

.faq-q[aria-expanded="true"] svg {
    transform: rotate(45deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-a p {
    color: var(--muted);
    padding-bottom: 1.6rem;
    max-width: 65ch;
}

/* ---------- Big CTA ---------- */

.big-cta {
    background: var(--ink);
    color: var(--bg);
    border-radius: calc(var(--radius) * 1.6);
    padding: clamp(3rem, 7vw, 6rem);
    text-align: center;
}

.big-cta h2 {
    font-size: clamp(2.2rem, 5.5vw, 4.2rem);
    max-width: 18ch;
    margin: 0 auto 1.2rem;
}

.big-cta p {
    color: rgba(250, 250, 248, 0.65);
    max-width: 48ch;
    margin: 0 auto 2.5rem;
}

.big-cta .pill {
    background: var(--bg);
    color: var(--ink);
    border-color: var(--bg);
    font-size: 1.05rem;
    padding: 0.9rem 2rem;
}

.big-cta .pill:hover {
    background: transparent;
    color: var(--bg);
}

/* ---------- Forms ---------- */

.form-field {
    margin-bottom: 1.6rem;
}

.form-field label {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 0.5rem;
}

input, textarea {
    width: 100%;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.95rem 1.1rem;
    font-family: inherit;
    font-size: 1rem;
    color: var(--ink);
    transition: border-color 0.25s;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--ink);
}

textarea {
    min-height: 130px;
    resize: vertical;
}

/* ---------- Footer ---------- */

footer {
    border-top: 1px solid var(--line);
    padding: 2.5rem 0;
}

.footer-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 var(--pad);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.88rem;
    color: var(--muted);
}

.footer-inner ul {
    display: flex;
    gap: 1.8rem;
    list-style: none;
}

.footer-inner a {
    text-decoration: none;
    color: var(--muted);
    transition: color 0.2s;
}

.footer-inner a:hover {
    color: var(--ink);
}

/* ---------- Lightbox & modal ---------- */

.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(17, 17, 17, 0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 90%;
    max-height: 88%;
    object-fit: contain;
    border-radius: 12px;
}

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.25);
}

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(17, 17, 17, 0.55);
    z-index: 2100;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-overlay.active {
    display: flex;
}

.modal-box {
    background: var(--bg);
    border-radius: var(--radius);
    max-width: 440px;
    width: 100%;
    padding: 2.2rem;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}

.modal-box .label {
    margin-bottom: 1rem;
}

.modal-box p:not(.label) {
    color: var(--muted);
    margin-bottom: 1.8rem;
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
    .preloader { display: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    section { padding: 4rem 0; }
    .metrics { grid-template-columns: 1fr; }
    .work-grid { grid-template-columns: 1fr; }
    .phases { grid-template-columns: 1fr 1fr; }
    .service-line {
        grid-template-columns: 1fr;
        gap: 0.4rem;
    }
}

@media (max-width: 768px) {
    .phases { grid-template-columns: 1fr; }
    input, textarea { font-size: 16px; }
    body { padding-bottom: 5rem; }
}