/* ---------- THEME TOKENS ---------- */
:root {
    --bg: #f6f7fb;
    --bg-soft: rgba(255,255,255,0.7);
    --panel: rgba(255,255,255,0.85);
    --text: #101223;
    --muted: #5b5f78;
    --brand: #2f49d1;
    --brand-2: #6b8cff;
    --border: rgba(16,18,35,0.12);
    --shadow: 0 10px 30px rgba(16,18,35,0.08);
    --glass: blur(8px);
    --link: #1b56e0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0b0d13;
        --bg-soft: rgba(14,16,24,0.6);
        --panel: rgba(18,21,31,0.8);
        --text: #e7eaf3;
        --muted: #9aa3ba;
        --brand: #7aa2ff;
        --brand-2: #3f68ff;
        --border: rgba(231,234,243,0.12);
        --shadow: 0 12px 36px rgba(0,0,0,0.35);
        --link: #9db8ff;
    }
}

/* Manual override via data-theme */
html[data-theme="light"] {
    --bg: #f6f7fb;
    --bg-soft: rgba(255,255,255,0.7);
    --panel: rgba(255,255,255,0.85);
    --text: #101223;
    --muted: #5b5f78;
    --brand: #2f49d1;
    --brand-2: #6b8cff;
    --border: rgba(16,18,35,0.12);
    --shadow: 0 10px 30px rgba(16,18,35,0.08);
    --link: #1b56e0;
}

html[data-theme="dark"] {
    --bg: #0b0d13;
    --bg-soft: rgba(14,16,24,0.6);
    --panel: rgba(18,21,31,0.8);
    --text: #e7eaf3;
    --muted: #9aa3ba;
    --brand: #7aa2ff;
    --brand-2: #3f68ff;
    --border: rgba(231,234,243,0.12);
    --shadow: 0 12px 36px rgba(0,0,0,0.35);
    --link: #9db8ff;
}

/* ---------- BASE ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji", "Segoe UI Symbol";
    color: var(--text);
    background:
            radial-gradient(1200px 600px at 50% -10%, rgba(107,140,255,0.15), transparent 60%),
            radial-gradient(1200px 600px at 90% -10%, transparent 60%, rgba(47,73,209,0.12)),
            linear-gradient(180deg, var(--bg) 0%, var(--bg) 100%);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
}

.section {
    padding: 64px 0;
}

.narrow { width: min(860px, 92%); }

/* ---------- HEADER ---------- */
/* --- HEADER RESPONSIVE FIX --- */
.header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    flex-wrap: wrap;         /* allow wrapping on small screens */
    align-items: center;
    justify-content: space-between;
    padding: 14px 4vw;       /* a bit narrower padding */
    background: var(--panel);
    backdrop-filter: var(--glass);
    border-bottom: 1px solid var(--border);
    max-width: 100%;         /* never exceed screen width */
    flex-direction: column;          /* stack brand and nav */
    text-align: center;              /* center text inside */
}

.brand {
    display: inline-flex;
    align-items: center;
    font-weight: 700;
    color: var(--text);
    gap: 6px;
    margin-bottom: 12px;             /* space below brand row */
}

.brand-logo { height: 30px; width: auto; }

.nav {
    display: flex;
    flex-wrap: wrap;         /* wrap nav items on small devices */
    align-items: center;
    max-width: 100%;
    justify-content: center;         /* center nav elements */
    gap: 12px;
}

/* optional: make long brand names shrink gracefully */
.brand-name {
    flex-shrink: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 1.2rem;
    font-weight: 700;
}

/* tighten buttons on very narrow screens */
@media (max-width: 480px) {
    .language-button,
    .theme-toggle {
        padding: 6px 8px;
        font-size: 0.9rem;
    }
}

.nav-link {
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
}
.nav-link:hover { background: var(--bg-soft); }

.language-selector { position: relative; }
.language-button {
    background: transparent;
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: 10px;
    color: var(--text);
    cursor: pointer;
}
.language-menu {
    display: none;
    position: absolute;
    right: 0; top: calc(100% + 8px);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    list-style: none;
    padding: 6px;
    margin: 0;
    min-width: 190px;
    backdrop-filter: var(--glass);
}
.language-menu li a {
    display: block;
    padding: 10px 12px;
    color: var(--text);
    text-decoration: none;
    border-radius: 8px;
}
.language-menu li a:hover { background: var(--bg-soft); }

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    padding: 8px 10px;
    border-radius: 10px;
    cursor: pointer;
    color: var(--text);
}

/* ---------- HERO ---------- */
.hero .container {
    text-align: center;
}

.hero-title {
    font-size: clamp(2rem, 3.6vw, 3rem);
    line-height: 1.15;
    margin: 6px 0 10px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    color: var(--muted);
    margin: 0 auto 28px;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* ---------- BUTTONS ---------- */
.button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #fff;
    padding: 12px 16px;
    border-radius: 12px;
    font-weight: 700;
    box-shadow: var(--shadow);
    border: 0;
    transform: translateZ(0);
    transition: transform .15s ease, filter .15s ease;
}
.button:hover { transform: translateY(-2px); filter: saturate(1.05); }
.button.ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.button-icon { width: 18px; height: 18px; }

/* ---------- CARDS GRID ---------- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.card {
    background: var(--panel);
    backdrop-filter: var(--glass);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px 18px 20px;
    box-shadow: var(--shadow);
    text-align: left;
}
.card h3 { margin: 4px 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); line-height: 1.6; }

/* ---------- SUPPORT ---------- */
.support .support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin: 18px 0 8px;
}
.support-block {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    backdrop-filter: var(--glass);
}
.list { padding-left: 18px; }
.list li { margin: 6px 0; }

.language-switcher-inline {
    display: flex; flex-wrap: wrap; gap: 10px;
    align-items: center; justify-content: center;
    margin-top: 12px;
}
.language-switcher-inline a {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
}
.support-logo {
    display: block;
    width: 140px;
    opacity: 0.9;
    margin: 20px auto 0;
}

/* === Video feature section === */
.video-feature .video-grid {
    display: grid;
    gap: 24px;
    align-items: center;
}

/* 2 columns on larger screens */
@media (min-width: 860px) {
    .video-feature .video-grid {
        grid-template-columns: 1.2fr 1fr;
    }
}

.video-media {
    position: relative;
}

.video-poster {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    background: radial-gradient(1200px 600px at 10% -10%, rgba(107,140,255,.12), transparent 60%),
    radial-gradient(1200px 600px at 90% 110%, rgba(47,73,209,.10), transparent 60%),
    var(--panel);
    box-shadow: var(--shadow);
    cursor: pointer;
    padding: 0;
}

.video-poster img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(1.05) contrast(1.05);
    transition: transform .35s ease;
}

.video-poster:hover img { transform: scale(1.02); }

.video-badge {
    position: absolute;
    inset: auto auto 14px 14px;
    display: grid;
    place-items: center;
    width: 52px; height: 52px;
    border-radius: 50%;
    background: rgba(0,0,0,.5);
    backdrop-filter: blur(6px);
    color: #fff;
    font-weight: 700;
    font-size: 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,.35);
    transition: transform .2s ease, background .2s ease;
}
.video-poster:hover .video-badge { transform: scale(1.06); background: rgba(0,0,0,.6); }

.video-copy h2 { margin: 0 0 6px; }
.video-copy .muted { margin: 0 0 10px; }

.list.check {
    margin: 10px 0 0 0;
    padding-left: 0;
    list-style: none;
}
.list.check li {
    margin: 6px 0;
    padding-left: 28px;
    position: relative;
}
.list.check li::before {
    content: "✓";
    position: absolute;
    left: 0; top: 0;
    line-height: 1.2;
    font-weight: 700;
    opacity: .9;
}

.social-home {
    margin-top: 20px;
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    gap: 24px;
}

.social-home a {
    font-size: 32px;           /* Icon size */
    color: #40B9FF;            /* XenVault Blue */
    transition: color 0.2s ease, transform 0.2s ease;
}

.social-home a:hover {
    color: #1EA0E8;            /* Slightly darker hover blue */
    transform: translateY(-3px);
}

/* When replaced with iframe, keep same rounded frame */
.video-embed {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.video-embed iframe { width: 100%; height: 100%; border: 0; }

/* ======== Media Carousel ======== */
.media-carousel .section-head {
    margin-bottom: 10px;
}

.carousel {
    position: relative;
    isolation: isolate;
}

.carousel-track {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 64%;
    gap: 18px;
    overflow-x: auto;
    padding: 8px 48px 28px; /* space for arrows + dots */
    scroll-snap-type: x mandatory;
    scroll-padding: 48px;
    -webkit-overflow-scrolling: touch;
}
@media (min-width: 860px) {
    .carousel-track { grid-auto-columns: 36%; }
}

/* Hide native scrollbar (keeps accessibility) */
.carousel-track::-webkit-scrollbar { height: 8px; }
.carousel-track::-webkit-scrollbar-thumb { background: transparent; }
.carousel-track { scrollbar-width: none; }
.carousel-track:hover { scrollbar-width: thin; }

.slide {
    position: relative;
    aspect-ratio: 9 / 16;
    scroll-snap-align: center;
    border-radius: 18px;
    overflow: hidden;
    background:
            radial-gradient(1200px 600px at 10% -10%, rgba(107,140,255,.12), transparent 60%),
            radial-gradient(1200px 600px at 90% 110%, rgba(47,73,209,.10), transparent 60%),
            var(--panel, #0d0f14);
    border: 1px solid var(--border, rgba(255,255,255,.08));
    box-shadow: var(--shadow, 0 8px 32px rgba(0,0,0,.35));
}

.slide::before {
    /* gradient ring for premium look */
    content: "";
    position: absolute; inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: linear-gradient(135deg, rgba(123,167,255,.28), rgba(47,73,209,.22), rgba(255,255,255,.06));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    pointer-events: none;
}

.slide img {
    width: 100%; height: 100%;
    object-fit: cover;
    border-radius: inherit;
    filter: saturate(1.02) contrast(1.03);
    transition: transform .35s ease;
}
.slide:hover img { transform: scale(1.02); }

.caption {
    position: absolute;
    left: 10px; bottom: 10px; right: 10px;
    padding: 8px 10px;
    font-size: .9rem;
    line-height: 1.2;
    color: #fff;
    background: rgba(0,0,0,.35);
    backdrop-filter: blur(6px);
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,.12);
}

/* Arrows */
.carousel-nav {
    position: absolute;
    top: 50%; transform: translateY(-50%);
    width: 42px; height: 42px;
    display: grid; place-items: center;
    border-radius: 50%;
    border: 1px solid var(--border, rgba(255,255,255,.12));
    background: rgba(0,0,0,.35);
    color: #fff;
    backdrop-filter: blur(6px);
    box-shadow: 0 8px 30px rgba(0,0,0,.35);
    cursor: pointer;
    z-index: 2;
}
.carousel-nav:hover { background: rgba(0,0,0,.45); }
.carousel-nav.prev { left: 8px; }
.carousel-nav.next { right: 8px; }

/* Dots */
.carousel-dots {
    display: flex; gap: 8px; justify-content: center; align-items: center;
    padding: 6px 0 0;
}
.carousel-dots button {
    width: 9px; height: 9px; border-radius: 999px;
    border: 0;
    background: rgba(255,255,255,.35);
    transition: width .2s ease, background .2s ease;
    cursor: pointer;
}
[data-theme="light"] .carousel-dots button { background: rgba(0,0,0,.25); }
.carousel-dots button[aria-selected="true"] {
    width: 28px;
    background: linear-gradient(90deg, #7ba7ff, #2f49d1);
}

/* Turn each slide into a container */
#gallery .slide { container-type: inline-size; }

/* Default: hide caption on very small slides */
#gallery .slide .caption { display: none; }

/* Show when the slide gets wider (≈ when 540w/720w is used) */
@container (min-width: 360px) {
    #gallery .slide .caption { display: block; }
}

/* ---------- FOOTER ---------- */
.footer {
    border-top: 1px solid var(--border);
    background: var(--panel);
    backdrop-filter: var(--glass);
}
.footer-inner {
    padding: 16px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.back-to-top { color: var(--text); text-decoration: none; }
.back-to-top:hover { text-decoration: underline; }

/* ---------- UTIL ---------- */
.nobr { white-space: nowrap; }