@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap");

:root {
    color-scheme: dark;
    font-family: "Inter", system-ui, sans-serif;
    --bg: radial-gradient(circle at top, #1a0930 0%, #05010f 70%);
    --panel: rgba(18, 7, 30, 0.86);
    --border: rgba(188, 131, 255, 0.4);
    --accent: #bc83ff;
    --text: #f5edff;
    --muted: rgba(245, 237, 255, 0.7);
    --shadow: 0 26px 60px rgba(0, 0, 0, 0.5);
}

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

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg) fixed;
    color: var(--text);
    padding: clamp(1.5rem, 4vw, 3rem);
}

.layout {
    display: grid;
    gap: clamp(1.5rem, 3vw, 2.5rem);
    max-width: 960px;
    margin: 0 auto;
}

.hero {
    background: var(--panel);
    border-radius: 26px;
    padding: clamp(2rem, 4vw, 3rem);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    text-align: center;
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.1rem, 4vw, 3.2rem);
}

.hero p {
    margin-top: 1rem;
    color: var(--muted);
}

.panel {
    background: var(--panel);
    border-radius: 24px;
    padding: clamp(1.6rem, 3vw, 2.3rem);
    border: 1px solid rgba(245, 237, 255, 0.18);
    box-shadow: var(--shadow);
}

.catalog {
    display: grid;
    gap: 1.2rem;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    margin-top: 1.2rem;
}

.product-card {
    background: rgba(11, 3, 22, 0.78);
    border-radius: 20px;
    padding: 1.4rem;
    border: 1px solid rgba(245, 237, 255, 0.12);
    display: grid;
    gap: 0.8rem;
    text-align: center;
}

.product-emoji {
    font-size: 2.5rem;
}

.product-id {
    color: var(--muted);
    font-size: 0.9rem;
}

.check-btn {
    border: none;
    border-radius: 16px;
    padding: 0.7rem 1.2rem;
    background: linear-gradient(135deg, var(--accent), #ddaaff);
    color: #240636;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.check-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(188, 131, 255, 0.35);
}

.hint {
    margin-top: 1.2rem;
    color: var(--muted);
    font-size: 0.95rem;
    border-top: 1px dashed rgba(245, 237, 255, 0.2);
    padding-top: 1rem;
}

.analyzer {
    display: grid;
    gap: 1.2rem;
}

.payload-preview,
.output {
    background: rgba(10, 2, 20, 0.8);
    border-radius: 18px;
    border: 1px solid rgba(245, 237, 255, 0.14);
    padding: 1.2rem;
    font-family: "JetBrains Mono", Consolas, monospace;
    white-space: pre-wrap;
    min-height: 6rem;
}

.output {
    color: var(--text);
}

@media (max-width: 720px) {
    body {
        padding: 1.5rem;
    }
}