:root {
    --bg-dark: #12121b;
    --bg-darker: #0a0a12;
    --text-primary: #f5f5f7;
    --text-secondary: rgba(245, 245, 247, 0.72);
    --accent: #f97316;
    --accent-soft: rgba(249, 115, 22, 0.18);
    --surface: rgba(26, 26, 36, 0.92);
    --card-radius: 26px;
    --border-soft: rgba(255, 255, 255, 0.08);
    --shadow-soft: 0 32px 70px rgba(8, 12, 24, 0.55);
}

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

body.qr-body {
    margin: 0;
    background: radial-gradient(circle at 20% 20%, rgba(249, 115, 22, 0.08), transparent),
                radial-gradient(circle at 80% 10%, rgba(14, 165, 233, 0.08), transparent),
                radial-gradient(circle at 50% 80%, rgba(236, 72, 153, 0.08), transparent),
                var(--bg-dark);
    font-family: 'Montserrat', sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.qr-hero {
    padding: 48px 18px 32px;
    text-align: center;
    max-width: 960px;
    width: 100%;
    margin: 0 auto;
}

.qr-hero-content h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.8rem, 4vw, 3.6rem);
    margin: 12px 0 16px;
    letter-spacing: 0.04em;
}

.qr-hero-content p {
    margin: 0 auto;
    max-width: 640px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.qr-tagline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid var(--border-soft);
    background: rgba(255, 255, 255, 0.04);
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(249, 250, 251, 0.8);
}

.qr-category-nav {
    margin-top: 36px;
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.qr-category-nav a {
    text-decoration: none;
    color: var(--text-primary);
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(249, 250, 251, 0.06);
    border: 1px solid rgba(249, 250, 251, 0.12);
    transition: transform 0.2s ease, background 0.2s ease;
    font-weight: 600;
}

.qr-category-nav a:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

.qr-menu {
    flex: 1;
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 18px 72px;
    display: flex;
    flex-direction: column;
    gap: 42px;
}

.qr-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 18px;
}

.category-card {
    background: rgba(16, 16, 26, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 22px;
    padding: 18px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    color: var(--text-primary);
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.category-card:hover,
.category-card.active {
    transform: translateY(-4px);
    border-color: var(--accent-soft);
    box-shadow: 0 20px 42px rgba(8, 12, 24, 0.4);
}

.category-thumb {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--accent);
}

.category-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-thumb.placeholder span {
    display: inline-block;
    transform: translateY(2px);
}

.category-name {
    font-weight: 600;
    letter-spacing: 0.02em;
}

.qr-selection {
    background: var(--surface);
    border-radius: var(--card-radius);
    padding: 28px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-soft);
    backdrop-filter: blur(32px);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.selection-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.selection-header h2 {
    margin: 8px 0 0;
    font-size: clamp(2rem, 3vw, 2.4rem);
    font-family: 'Playfair Display', serif;
    letter-spacing: 0.02em;
}

.category-label {
    font-size: 0.85rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.54);
}

.selection-visual {
    width: min(220px, 35%);
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
}

.selection-visual:empty {
    display: none;
}

.selection-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.product-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

@media (min-width: 1280px) {
    .qr-menu {
        max-width: 1320px;
    }

    .qr-category-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 22px;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 22px;
    }
}

.product-card {
    background: rgba(12, 12, 20, 0.65);
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 22px 50px rgba(8, 12, 24, 0.4);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.product-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-soft);
}

.product-image {
    position: relative;
    padding-top: 68%;
    overflow: hidden;
}

.product-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-body h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.product-price {
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(249, 250, 251, 0.92);
}

.category-empty {
    margin: 0;
    padding: 18px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
}

.category-empty,
.qr-empty {
    text-align: center;
    padding: 120px 20px;
    background: var(--surface);
    border-radius: var(--card-radius);
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
}

.category-empty {
    padding: 24px;
    margin: 0;
    color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.04);
    border-radius: 20px;
}

.qr-empty h2 {
    margin-bottom: 12px;
    font-size: 2rem;
}

.qr-empty p {
    margin: 0;
    color: var(--text-secondary);
}

.qr-footer {
    text-align: center;
    padding: 32px 16px 48px;
    color: rgba(249, 250, 251, 0.64);
    font-size: 0.9rem;
}

@media (max-width: 720px) {
    .qr-hero {
        padding-top: 40px;
    }

    .selection-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .selection-visual {
        width: 100%;
    }

    .qr-menu {
        padding-bottom: 56px;
    }

    .qr-category-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }

    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

@media (max-width: 540px) {
    .qr-category-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 14px;
    }

    .category-card {
        padding: 16px 12px;
    }

    .category-thumb {
        width: 64px;
        height: 64px;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
}

@media (max-width: 420px) {
    .qr-hero {
        padding: 38px 16px 28px;
    }

    .qr-hero-content h1 {
        font-size: clamp(2rem, 8vw, 2.4rem);
    }

    .qr-hero-content p {
        font-size: 0.95rem;
    }

    .category-card {
        text-align: left;
        align-items: flex-start;
    }

    .category-thumb {
        margin-bottom: 6px;
    }

    .selection-header h2 {
        font-size: 1.8rem;
    }

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

@media (max-width: 360px) {
    .category-card {
        padding: 14px;
        gap: 10px;
    }

    .category-thumb {
        width: 56px;
        height: 56px;
        border-radius: 18px;
    }

    .product-card {
        border-radius: 18px;
    }

    .product-body {
        padding: 16px;
    }
}