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

:root {
    --bg:       #080809;
    --bg1:      #0d0d0f;
    --bg2:      #111113;
    --bg3:      #161618;
    --border:   #1e1e22;
    --border2:  #252528;
    --text:     #f0f0f2;
    --text2:    #8a8a96;
    --text3:    #4a4a54;
    --blue:     #2563eb;
    --blue2:    #1d4ed8;
    --blue-dim: #0a1628;
    --blue-border: #1e3a8a;
    --green:    #22c55e;
    --amber:    #f59e0b;
    --red:      #ef4444;
    --font:     'Sora', sans-serif;
    --mono:     'DM Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ── GRID TEXTURE ── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.25;
    pointer-events: none;
    z-index: 0;
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 48px;
    height: 60px;
    background: rgba(8,8,9,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.nav-logo-icon {
    width: 28px;
    height: 28px;
}

.nav-logo-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 13px;
    color: var(--text2);
    text-decoration: none;
    transition: color 0.15s;
    font-weight: 400;
}

.nav-links a:hover { color: var(--text); }

.nav-download {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 7px 16px;
    background: var(--blue);
    border: none;
    border-radius: 7px;
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font);
    text-decoration: none;
    transition: background 0.15s;
    cursor: pointer;
}

.nav-download:hover { background: var(--blue2); }

/* ── HERO ── */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background: var(--blue-dim);
    border: 1px solid var(--blue-border);
    border-radius: 100px;
    font-size: 11px;
    font-family: var(--mono);
    color: #60a5fa;
    margin-bottom: 28px;
    animation: fadeUp 0.6s ease both;
}

.hero-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #60a5fa;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

.hero-title {
    font-size: clamp(48px, 8vw, 88px);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.0;
    margin-bottom: 24px;
    animation: fadeUp 0.6s 0.1s ease both;
}

.hero-title-dim { color: var(--text3); }
.hero-title-accent { color: var(--blue); }

.hero-sub {
    font-size: 17px;
    color: var(--text2);
    max-width: 480px;
    line-height: 1.7;
    margin-bottom: 40px;
    font-weight: 300;
    animation: fadeUp 0.6s 0.2s ease both;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    animation: fadeUp 0.6s 0.3s ease both;
}

.btn-primary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--blue);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font);
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
}

.btn-primary:hover { background: var(--blue2); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: none;
    border: 1px solid var(--border2);
    border-radius: 8px;
    color: var(--text2);
    font-size: 14px;
    font-weight: 400;
    font-family: var(--font);
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
}

.btn-ghost:hover { border-color: var(--text3); color: var(--text); }

.hero-meta {
    margin-top: 20px;
    font-size: 12px;
    color: var(--text3);
    font-family: var(--mono);
    animation: fadeUp 0.6s 0.4s ease both;
}

/* ── APP PREVIEW ── */
.preview-wrap {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto 120px;
    padding: 0 24px;
    animation: fadeUp 0.8s 0.5s ease both;
}

.preview-glow {
    position: absolute;
    inset: -40px;
    background: radial-gradient(ellipse at center, rgba(37,99,235,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.preview-frame {
    background: #0a0a0c;
    border: 1px solid var(--border2);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.03), 0 40px 80px rgba(0,0,0,0.6);
}

.preview-titlebar {
    display: flex;
    align-items: center;
    height: 38px;
    background: #08080a;
    border-bottom: 1px solid var(--border);
    padding: 0 14px;
    gap: 7px;
}

.preview-dot { width: 11px; height: 11px; border-radius: 50%; }
.preview-dot.r { background: #ff5f57; }
.preview-dot.y { background: #ffbd2e; }
.preview-dot.g { background: #28ca41; }

.preview-titlebar-text {
    flex: 1;
    text-align: center;
    font-size: 11px;
    color: var(--text3);
    font-family: var(--mono);
}

.preview-body {
    display: grid;
    grid-template-columns: 200px 1fr;
    height: 420px;
}

.preview-sidebar {
    background: #09090b;
    border-right: 1px solid var(--border);
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.preview-cat {
    padding: 4px 8px;
    font-size: 10px;
    font-family: var(--mono);
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 6px;
}

.preview-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 8px;
    border-radius: 6px;
    cursor: default;
}

.preview-item.active { background: #1a1a1e; }

.preview-item-icon {
    width: 28px;
    height: 28px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 600;
    font-family: var(--mono);
    flex-shrink: 0;
}

.preview-item-info { flex: 1; min-width: 0; }
.preview-item-name { font-size: 11px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.preview-item-ver { font-size: 9px; color: var(--text3); font-family: var(--mono); }

.preview-status { width: 5px; height: 5px; border-radius: 50%; flex-shrink: 0; }
.s-green { background: var(--green); }
.s-amber { background: var(--amber); }
.s-idle  { background: var(--border2); }

.preview-main {
    background: #0d0d0f;
    display: flex;
    flex-direction: column;
}

.preview-hero-section {
    padding: 20px 22px 16px;
    border-bottom: 1px solid var(--border);
}

.preview-hero-top {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 14px;
}

.preview-hero-icon {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    font-family: var(--mono);
    flex-shrink: 0;
    background: #03060f;
    border: 1px solid #1e3a8a;
    color: #2563eb;
}

.preview-hero-info { flex: 1; }
.preview-hero-name { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.preview-hero-path { font-size: 10px; color: var(--text3); font-family: var(--mono); margin-bottom: 7px; }

.preview-badges { display: flex; gap: 5px; }
.preview-badge {
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid;
    font-family: var(--mono);
}
.pb-green { border-color: #14532d; color: var(--green); background: #06120a; }
.pb-blue  { border-color: #1e3a8a; color: #60a5fa; background: #03060f; }
.pb-muted { border-color: var(--border2); color: var(--text3); background: var(--bg3); }

.preview-actions { display: flex; gap: 7px; }
.preview-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-family: var(--mono);
    border: 1px solid transparent;
    cursor: default;
}
.pb-primary { background: #2563eb; color: #fff; }
.pb-ghost   { background: none; border-color: var(--border2); color: var(--text2); }

.preview-body-section {
    padding: 16px 22px;
    flex: 1;
}

.preview-section-label {
    font-size: 9px;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-family: var(--mono);
    margin-bottom: 8px;
}

.preview-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.preview-info-card {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
}

.preview-info-label { font-size: 9px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.08em; font-family: var(--mono); margin-bottom: 3px; }
.preview-info-value { font-size: 11px; font-family: var(--mono); color: var(--text2); }
.piv-green { color: var(--green); }
.piv-blue  { color: #60a5fa; }

/* ── SECTION SHARED ── */
section {
    position: relative;
    z-index: 1;
}

.section-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-label {
    font-size: 11px;
    font-family: var(--mono);
    color: var(--blue);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.section-sub {
    font-size: 15px;
    color: var(--text2);
    font-weight: 300;
    max-width: 520px;
    line-height: 1.7;
}

/* ── FEATURES ── */
#features {
    padding: 80px 0 100px;
    border-top: 1px solid var(--border);
}

.features-header {
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.feature-card {
    background: var(--bg1);
    padding: 28px 24px;
    transition: background 0.15s;
}

.feature-card:hover { background: var(--bg2); }

.feature-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--blue-dim);
    border: 1px solid var(--blue-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #60a5fa;
    font-size: 17px;
    margin-bottom: 14px;
}

.feature-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.feature-desc {
    font-size: 13px;
    color: var(--text2);
    line-height: 1.6;
    font-weight: 300;
}

/* ── DOWNLOAD ── */
#download {
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

.download-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.download-platforms {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 32px;
}

.download-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg2);
    border: 1px solid var(--border2);
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
}

.download-card:hover {
    border-color: var(--blue-border);
    background: var(--blue-dim);
}

.download-card-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text2);
    flex-shrink: 0;
}

.download-card:hover .download-card-icon { color: #60a5fa; }

.download-card-info { flex: 1; }
.download-card-name { font-size: 13px; font-weight: 500; color: var(--text); }
.download-card-meta { font-size: 11px; color: var(--text3); font-family: var(--mono); margin-top: 1px; }

.download-card-arrow {
    color: var(--text3);
    font-size: 14px;
    transition: transform 0.15s, color 0.15s;
}

.download-card:hover .download-card-arrow {
    transform: translateX(3px);
    color: #60a5fa;
}

.download-note {
    margin-top: 14px;
    font-size: 11px;
    color: var(--text3);
    font-family: var(--mono);
    line-height: 1.6;
}

.download-right {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    font-family: var(--mono);
    font-size: 12px;
}

.download-right-label {
    font-size: 10px;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 14px;
}

.code-line {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 4px 0;
    color: var(--text2);
}

.code-line-num { color: var(--text3); min-width: 16px; text-align: right; user-select: none; }
.code-line-comment { color: var(--text3); }
.code-line-key { color: #60a5fa; }
.code-line-val { color: var(--green); }
.code-line-str { color: var(--amber); }

/* ── CHANGELOG ── */
#changelog {
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

.changelog-header { margin-bottom: 48px; }

.changelog-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.changelog-entry {
    display: grid;
    grid-template-columns: 140px 1fr;
    border-bottom: 1px solid var(--border);
    transition: background 0.12s;
}

.changelog-entry:last-child { border-bottom: none; }
.changelog-entry:hover { background: var(--bg2); }

.changelog-meta {
    padding: 20px 20px;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.changelog-version {
    font-size: 13px;
    font-weight: 600;
    font-family: var(--mono);
    color: var(--text);
}

.changelog-date {
    font-size: 11px;
    font-family: var(--mono);
    color: var(--text3);
}

.changelog-tag {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 3px;
    font-size: 9px;
    font-family: var(--mono);
    border: 1px solid;
    width: fit-content;
}

.ct-latest { border-color: var(--blue-border); color: #60a5fa; background: var(--blue-dim); }
.ct-stable { border-color: var(--border2); color: var(--text3); background: var(--bg3); }

.changelog-body { padding: 20px 24px; }

.changelog-items {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.changelog-items li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--text2);
    font-weight: 300;
}

.changelog-items li::before {
    content: '';
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text3);
    flex-shrink: 0;
    margin-top: 8px;
}

.changelog-items li.added::before   { background: var(--green); }
.changelog-items li.changed::before { background: var(--blue); }
.changelog-items li.fixed::before   { background: var(--amber); }

/* ── FOOTER ── */
footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    padding: 32px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo-text {
    font-size: 13px;
    font-weight: 500;
    color: var(--text2);
}

.footer-sep { color: var(--text3); }

.footer-copy {
    font-size: 12px;
    color: var(--text3);
    font-family: var(--mono);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 12px;
    color: var(--text3);
    text-decoration: none;
    transition: color 0.15s;
    font-family: var(--mono);
}

.footer-links a:hover { color: var(--text2); }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── MISC ── */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border2) 20%, var(--border2) 80%, transparent);
    margin: 0 auto;
    max-width: 800px;
}

@media (max-width: 768px) {
    nav {
        padding: 0 20px;
    }

    .nav-links {
        display: none;
    }

    .hero-title {
        letter-spacing: -0.03em;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }

    .btn-primary,
    .btn-ghost {
        justify-content: center;
    }

    .preview-wrap {
        padding: 0 16px;
        margin-bottom: 60px;
    }

    .preview-body {
        grid-template-columns: 1fr;
        height: auto;
    }

    .preview-sidebar {
        display: none;
    }

    .preview-main {
        min-height: 320px;
    }

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

    .download-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .download-right {
        display: none;
    }

    .changelog-entry {
        grid-template-columns: 1fr;
    }

    .changelog-meta {
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 14px 20px;
        flex-direction: row;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    footer {
        flex-direction: column;
        gap: 16px;
        text-align: center;
        padding: 24px 20px;
    }
}