/* ==========================================================================
   INFO WEB s.r.o. — 2026 dark-aurora design system
   ========================================================================== */

/* ============ Tokens ============ */
:root {
    --bg: #0b1120;
    --bg-elev: #111a2e;
    --glass: rgba(255, 255, 255, .05);
    --glass-border: rgba(255, 255, 255, .10);
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-1: #22d3ee;
    --accent-2: #818cf8;
    --accent-3: #c084fc;
    --grad-accent: linear-gradient(120deg, var(--accent-1), var(--accent-2), var(--accent-3));
    --radius: 1.25rem;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
    --maxw: 1200px;
}

/* ============ Reset & base ============ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 1.0625rem;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    color: var(--accent-1);
    text-decoration: none;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: -.02em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: 1.25rem; }

::selection {
    background: var(--accent-2);
    color: #fff;
}

.container {
    max-width: var(--maxw);
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.icon {
    width: 1em;
    height: 1em;
    fill: currentColor;
    display: inline-block;
    vertical-align: -0.125em;
}

.gradient-text {
    background: var(--grad-accent);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ============ Navbar ============ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 17, 32, .72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
}

.navbar .container {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: 4.25rem;
}

.navbar-brand img {
    height: 2.1rem;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: .25rem;
    list-style: none;
    margin-left: auto;
}

.nav-menu a {
    display: block;
    padding: .5rem .9rem;
    border-radius: .6rem;
    color: var(--text-muted);
    font-weight: 600;
    font-size: .95rem;
    transition: color .2s, background .2s;
}

.nav-menu a:hover {
    color: var(--text);
    background: var(--glass);
}

.nav-menu a.active {
    color: var(--text);
    background: var(--glass);
    border: 1px solid var(--glass-border);
}

.lang-switcher {
    position: relative;
}

.lang-switcher > button {
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 600;
    color: var(--text);
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: .6rem;
    padding: .45rem .8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: .4rem;
}

.lang-switcher .lang-menu {
    position: absolute;
    right: 0;
    top: calc(100% + .5rem);
    min-width: 5.5rem;
    background: var(--bg-elev);
    border: 1px solid var(--glass-border);
    border-radius: .8rem;
    padding: .35rem;
    display: none;
    flex-direction: column;
    box-shadow: 0 16px 40px rgba(0, 0, 0, .45);
}

.lang-switcher.open .lang-menu {
    display: flex;
}

.lang-menu a {
    padding: .45rem .8rem;
    border-radius: .5rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 600;
}

.lang-menu a:hover {
    background: var(--glass);
    color: var(--text);
}

.lang-menu a.active {
    color: var(--accent-1);
}

.nav-toggle {
    display: none;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: .6rem;
    color: var(--text);
    font-size: 1.1rem;
    padding: .45rem .7rem;
    cursor: pointer;
}

/* ============ Hero / aurora ============ */
.hero {
    position: relative;
    overflow: hidden;
    padding: 7rem 0 6rem;
    background-image: radial-gradient(rgba(148, 163, 184, .12) 1px, transparent 1px);
    background-size: 28px 28px;
}

.page-header {
    position: relative;
    overflow: hidden;
    padding: 4.5rem 0 3.5rem;
    background-image: radial-gradient(rgba(148, 163, 184, .12) 1px, transparent 1px);
    background-size: 28px 28px;
}

.aurora {
    position: absolute;
    width: 46rem;
    height: 46rem;
    border-radius: 50%;
    filter: blur(90px);
    opacity: .45;
    pointer-events: none;
    z-index: 0;
}

.aurora--1 {
    top: -22rem;
    left: -12rem;
    background: radial-gradient(circle at 30% 30%, var(--accent-1), transparent 65%);
    animation: drift 18s ease-in-out infinite alternate;
}

.aurora--2 {
    bottom: -26rem;
    right: -14rem;
    background: radial-gradient(circle at 70% 70%, var(--accent-3), transparent 65%);
    animation: drift 22s ease-in-out infinite alternate-reverse;
}

@keyframes drift {
    0% { transform: translate(0, 0) rotate(0deg) scale(1); }
    50% { transform: translate(6rem, 3rem) rotate(25deg) scale(1.12); }
    100% { transform: translate(-4rem, 5rem) rotate(-15deg) scale(.95); }
}

.hero .container,
.page-header .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 46rem;
}

.hero p.lead,
.page-header p.lead {
    margin-top: 1.25rem;
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 40rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: .9rem;
    margin-top: 2.25rem;
}

/* ============ Badges / chips / buttons ============ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-family: var(--font-mono);
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .02em;
    color: var(--accent-1);
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 99px;
    padding: .4rem 1rem;
    margin-bottom: 1.4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    font-weight: 700;
    font-size: 1rem;
    border-radius: .8rem;
    padding: .85rem 1.7rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .2s, box-shadow .2s, background .2s;
}

.btn-primary {
    background: var(--grad-accent);
    color: #0b1120;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 36px -10px var(--accent-2);
}

.btn-ghost {
    background: var(--glass);
    border-color: var(--glass-border);
    color: var(--text);
}

.btn-ghost:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, .09);
}

.chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    list-style: none;
    margin-top: 1.5rem;
}

.chip-list li {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--text);
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 99px;
    padding: .4rem .9rem;
}

.chip-list li i {
    color: var(--accent-1);
    font-size: .75rem;
}

/* ============ Sections ============ */
.section {
    padding: 5.5rem 0;
    position: relative;
}

.section--elev {
    background: var(--bg-elev);
    border-block: 1px solid var(--glass-border);
}

.section-head {
    text-align: center;
    max-width: 44rem;
    margin: 0 auto 3.5rem;
}

.section-head p {
    margin-top: .9rem;
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* ============ Cards ============ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: transform .25s, box-shadow .25s, border-color .25s;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(129, 140, 248, .45);
    box-shadow: 0 0 40px -12px var(--accent-2);
}

.card-icon {
    width: 3.1rem;
    height: 3.1rem;
    border-radius: .9rem;
    display: grid;
    place-items: center;
    font-size: 1.25rem;
    color: #0b1120;
    background: var(--grad-accent);
    margin-bottom: 1.25rem;
}

.card h3 {
    margin-bottom: .7rem;
}

.card p {
    color: var(--text-muted);
    font-size: .98rem;
}

/* ============ Promo sections ============ */
.promo {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 3.5rem;
    align-items: center;
}

.promo--flip .promo-text {
    order: 2;
}

.promo--flip .promo-media {
    order: 1;
}

.promo h2 .domain {
    font-family: var(--font-mono);
    font-weight: 700;
}

.promo .tagline {
    display: block;
    margin-top: .5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0;
}

.promo p {
    margin-top: 1.25rem;
    color: var(--text-muted);
}

.promo-media {
    position: relative;
}

.promo-media img {
    border-radius: var(--radius);
    border: 1px solid var(--glass-border);
    box-shadow: 0 24px 70px -20px rgba(129, 140, 248, .35);
}

.promo-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.promo-actions .store-badge img {
    height: 3.1rem;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.promo-actions .text-link {
    font-weight: 600;
    color: var(--text-muted);
    transition: color .2s;
}

.promo-actions .text-link:hover {
    color: var(--accent-1);
}

/* ============ Stats ============ */
.stats {
    padding: 3.5rem 0;
    background: var(--bg-elev);
    border-block: 1px solid var(--glass-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat strong {
    display: block;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    font-family: var(--font-mono);
    background: var(--grad-accent);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat span {
    color: var(--text-muted);
    font-size: .95rem;
}

/* ============ Projects ============ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform .25s, box-shadow .25s;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 40px -14px var(--accent-1);
}

.project-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    filter: saturate(.9) brightness(.92);
    transition: transform .4s, filter .4s;
}

.project-card:hover img {
    transform: scale(1.04);
    filter: saturate(1) brightness(1);
}

.project-card .meta {
    padding: 1.1rem 1.3rem 1.3rem;
}

.project-card h4 {
    font-size: 1.02rem;
    font-weight: 700;
}

.project-card .date {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--text-muted);
    margin-top: .3rem;
}

/* ============ Features list ============ */
.features-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: .9rem 2rem;
    max-width: 56rem;
    margin-inline: auto;
}

.features-list li {
    display: flex;
    align-items: flex-start;
    gap: .8rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: .9rem;
    padding: .95rem 1.2rem;
}

.features-list li::before {
    content: "\2713";
    flex: none;
    width: 1.45rem;
    height: 1.45rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: .8rem;
    font-weight: 800;
    color: #0b1120;
    background: var(--grad-accent);
    margin-top: .15rem;
}

/* ============ FAQ ============ */
.faq {
    max-width: 50rem;
    margin-inline: auto;
    display: grid;
    gap: 1rem;
}

.faq details {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 0;
    overflow: hidden;
}

.faq summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-weight: 700;
    padding: 1.2rem 1.5rem;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq summary::after {
    content: "\2304";
    font-size: 1.2rem;
    color: var(--accent-1);
    transition: transform .25s;
    line-height: 1;
    margin-top: -.4rem;
}

.faq details[open] summary::after {
    transform: rotate(180deg) translateY(-.4rem);
}

.faq details p {
    padding: 0 1.5rem 1.35rem;
    color: var(--text-muted);
}

/* ============ CTA band ============ */
.cta-band {
    position: relative;
    overflow: hidden;
    margin: 0 auto;
    max-width: var(--maxw);
    border-radius: var(--radius);
    border: 1px solid var(--glass-border);
    background:
        radial-gradient(60rem 18rem at 20% 0%, rgba(34, 211, 238, .18), transparent 60%),
        radial-gradient(60rem 18rem at 80% 100%, rgba(192, 132, 252, .18), transparent 60%),
        var(--bg-elev);
    padding: 3.5rem 3rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.75rem;
}

.cta-band p {
    color: var(--text-muted);
    margin-top: .4rem;
}

/* ============ Content blocks (about/contact) ============ */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
}

.split img {
    border-radius: var(--radius);
    border: 1px solid var(--glass-border);
}

.split p + p {
    margin-top: 1rem;
}

.split p {
    color: var(--text-muted);
}

.progress {
    margin-top: 1.4rem;
}

.progress label {
    display: flex;
    justify-content: space-between;
    font-size: .9rem;
    font-weight: 600;
    margin-bottom: .45rem;
}

.progress label span {
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.progress .bar {
    height: .5rem;
    border-radius: 99px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    overflow: hidden;
}

.progress .bar i {
    display: block;
    height: 100%;
    border-radius: 99px;
    background: var(--grad-accent);
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
}

.breadcrumbs a {
    color: var(--text-muted);
}

.breadcrumbs a:hover {
    color: var(--accent-1);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.contact-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
}

.contact-card .card-icon {
    margin-inline: auto;
}

.contact-card p,
.contact-card a {
    color: var(--text-muted);
    font-size: .98rem;
}

.contact-card a:hover {
    color: var(--accent-1);
}

/* ============ Footer ============ */
footer {
    margin-top: 5.5rem;
    border-top: 1px solid var(--glass-border);
    background: var(--bg-elev);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 2.5rem;
}

.footer-grid h4 {
    font-size: 1rem;
    margin-bottom: 1.1rem;
}

.footer-grid ul {
    list-style: none;
    display: grid;
    gap: .5rem;
}

.footer-grid li,
.footer-grid p {
    color: var(--text-muted);
    font-size: .95rem;
}

.footer-grid a {
    color: var(--text-muted);
    transition: color .2s;
}

.footer-grid a:hover {
    color: var(--accent-1);
}

.social-links {
    display: flex;
    gap: .7rem;
    margin-top: 1.2rem;
}

.social-links a {
    width: 2.4rem;
    height: 2.4rem;
    display: grid;
    place-items: center;
    border-radius: .7rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    transition: color .2s, border-color .2s;
}

.social-links a:hover {
    color: var(--accent-1);
    border-color: var(--accent-1);
}

.footer-bottom {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    color: var(--text-muted);
    font-size: .88rem;
}

.footer-bottom a {
    color: var(--text-muted);
}

.footer-bottom a:hover {
    color: var(--accent-1);
}

/* ============ Reveal animation ============ */
.reveal {
    opacity: 0;
    translate: 0 24px;
    transition: opacity .6s ease, translate .6s ease;
}

.reveal.visible {
    opacity: 1;
    translate: 0 0;
}

/* ============ Responsive ============ */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
        margin-left: auto;
    }

    .nav-menu {
        position: absolute;
        top: 4.25rem;
        left: 0;
        right: 0;
        margin-left: 0;
        flex-direction: column;
        background: var(--bg-elev);
        border-bottom: 1px solid var(--glass-border);
        padding: .75rem 1.25rem 1.25rem;
        display: none;
    }

    .nav-menu.open {
        display: flex;
    }

    .promo,
    .promo--flip,
    .split {
        grid-template-columns: 1fr;
        gap: 2.25rem;
    }

    .promo--flip .promo-text {
        order: 1;
    }

    .promo--flip .promo-media {
        order: 2;
    }

    .features-list {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 5rem 0 4.5rem;
    }

    .cta-band {
        margin-inline: 1.5rem;
        padding: 2.5rem 1.75rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 3.75rem 0;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }

    html {
        scroll-behavior: auto;
    }

    .reveal {
        opacity: 1;
        translate: 0 0;
    }
}