:root {
    color-scheme: dark;
    --install-bg: #12100f;
    --install-card: rgba(31, 27, 24, 0.96);
    --install-copper: #d77a3d;
    --install-copper-light: #ffae76;
    --install-text: #f7f0e9;
    --install-muted: #c9bbb0;
    --install-border: rgba(255, 174, 118, 0.24);
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at top, rgba(215, 122, 61, 0.18), transparent 42%),
        var(--install-bg);
    color: var(--install-text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.install-card {
    width: min(100%, 560px);
    padding: clamp(24px, 6vw, 44px);
    border: 1px solid var(--install-border);
    border-radius: 28px;
    background: var(--install-card);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
    text-align: center;
}

.install-logo {
    width: 112px;
    height: 112px;
    border-radius: 25px;
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
}

h1 {
    margin: 24px 0 10px;
    font-size: clamp(28px, 7vw, 40px);
    line-height: 1.1;
}

.install-lead {
    margin: 0 auto 26px;
    max-width: 430px;
    color: var(--install-muted);
    line-height: 1.65;
}

.install-button {
    width: 100%;
    min-height: 54px;
    border: 0;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--install-copper-light), var(--install-copper));
    color: #21130b;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 12px 28px rgba(215, 122, 61, 0.22);
}

.install-button:disabled {
    cursor: default;
    opacity: 0.7;
}

.help-button,
.back-link {
    display: inline-block;
    margin-top: 18px;
    border: 0;
    background: transparent;
    color: var(--install-copper-light);
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.install-status {
    margin: 20px 0 0;
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--install-muted);
    line-height: 1.45;
}

.install-status[data-type="success"] {
    background: rgba(80, 180, 120, 0.12);
    color: #b8f3cf;
}

.manual-instructions {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--install-border);
    text-align: left;
}

.manual-instructions h2 {
    margin: 0 0 14px;
    font-size: 19px;
}

.manual-instructions p {
    margin: 10px 0;
    color: var(--install-muted);
    line-height: 1.55;
}

.manual-instructions strong {
    color: var(--install-text);
}

@media (max-width: 520px) {
    body {
        padding: 14px;
    }

    .install-card {
        border-radius: 22px;
    }
}