:root {
    --page-bg: #0a0e12;
    --page-surface: #141922;
    --page-border: rgba(255, 255, 255, 0.08);
    --card-bg: #d4a040;
    --card-text-primary: rgba(24, 20, 17, 0.95);
    --card-text-secondary: rgba(24, 20, 17, 0.7);
    --button-bg: #f8f8f8;
    --button-fg: #111111;
    --button-shadow: rgba(0, 0, 0, 0.28);
    --secondary-bg: rgba(255, 255, 255, 0.14);
    --secondary-border: rgba(255, 255, 255, 0.26);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Georgia, "Times New Roman", serif;
    color: #F5F7FA;
    background: var(--page-bg);
    padding: 30px 16px 48px;
}

.back-nav {
    max-width: 900px;
    margin: 0 auto 28px;
}

.back-link {
    display: inline-block;
    color: #C5CAD1;
    text-decoration: none;
    font-size: 13px;
}

.back-link:hover {
    color: #ffffff;
}

.page-wrap {
    max-width: 720px;
    margin: 0 auto;
    display: grid;
    gap: 28px;
}

.page-header {
    display: grid;
    justify-items: center;
    gap: 12px;
    text-align: center;
    padding: 10px 0 2px;
}

.page-header h1 {
    margin: 0;
    font-size: clamp(2.1rem, 8vw, 3.3rem);
    line-height: 0.98;
    font-weight: 400;
    text-wrap: balance;
}

.card-shell {
    width: min(100%, 560px);
    margin: 0 auto;
    border-radius: 28px;
    background: var(--card-bg);
    color: var(--card-text-primary);
    padding: 30px 24px 26px;
    box-shadow: 0 24px 56px rgba(0, 0, 0, 0.3);
    position: relative;
}

.brand-icon {
    margin: 0;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
}

.card-title-group {
    text-align: center;
    margin-bottom: 22px;
}

.card-title-group h2 {
    margin: 0;
    font-size: clamp(2rem, 7vw, 3rem);
    line-height: 1.04;
    font-weight: 400;
    text-wrap: balance;
}

.card-title-group p {
    margin: 12px auto 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    max-width: 30ch;
    color: var(--card-text-secondary);
    text-wrap: pretty;
}

.qr-badge {
    width: fit-content;
    margin: 0 auto 2px;
    background: #ffffff;
    border-radius: 22px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    padding: 18px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.14);
}

#qr-canvas {
    display: block;
    width: 224px;
    height: 224px;
}

#qr-canvas canvas,
#qr-canvas img {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.card-footer {
    margin: 20px 0 0;
    text-align: center;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 12px;
    color: rgba(24, 20, 17, 0.52);
}

.actions {
    width: min(100%, 560px);
    margin: 0 auto;
    display: grid;
    gap: 14px;
}

.action-button,
.secondary-button {
    display: inline-flex;
    width: 100%;
    justify-content: center;
    align-items: center;
    min-height: 52px;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    border: none;
    cursor: pointer;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.action-button {
    background: var(--button-bg);
    color: var(--button-fg);
    box-shadow: 0 10px 24px var(--button-shadow);
}

.secondary-button {
    background: var(--secondary-bg);
    color: #F5F7FA;
    border: 1px solid var(--secondary-border);
}

.status-message {
    margin: 0;
    min-height: 22px;
    text-align: center;
    color: #C5CAD1;
    font-size: 13px;
    line-height: 1.5;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    text-wrap: pretty;
}

.app-store-section {
    text-align: center;
    margin-top: 2px;
    padding: 20px 18px 0;
    border-top: 1px solid var(--page-border);
}

.app-info {
    margin: 10px 0 0;
    color: #8B92A1;
    font-size: 12px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.blank-state-panel {
    width: min(100%, 560px);
    margin: 0 auto;
    padding: 24px 28px;
    background: #1a1f2a;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
}

.blank-state-heading {
    margin: 0 0 12px;
    font-size: 1rem;
    font-weight: 600;
    color: #F5F7FA;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.blank-state-body {
    margin: 0 0 14px;
    font-size: 15px;
    line-height: 1.65;
    color: #C5CAD1;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    text-wrap: pretty;
}

.blank-state-hint {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: #8B92A1;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    text-wrap: pretty;
}

@media (max-width: 560px) {
    body {
        padding: 18px 12px 30px;
    }

    .card-shell {
        padding: 24px 16px 22px;
        border-radius: 22px;
    }

    .page-header h1 {
        font-size: clamp(1.9rem, 12vw, 2.5rem);
    }

    .card-title-group {
        margin-bottom: 18px;
    }

    .qr-badge {
        padding: 12px;
        border-radius: 16px;
    }

    #qr-canvas {
        width: 188px;
        height: 188px;
    }
}