:root {
    --bg: #ffffff;
    --card: #f8fafc;
    --accent: #ed6c11;
    --accent-strong: #d15f0f;
    --text: #0f172a;
    --muted: #475569;
    font-family: 'Sora', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: #ffffff;
    color: var(--text);
}

.user-shell {
    max-width: 960px;
    margin: 0 auto;
    padding: 4rem 1.5rem 5rem;
}

.user-card {
    border-radius: 26px;
    padding: 3rem;
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: var(--card);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.user-card h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 2.8rem);
}

.user-card p {
    margin: 0.8rem 0 2.4rem;
    color: var(--muted);
    font-size: 1.1rem;
}

form {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

input[type="text"] {
    flex: 1;
    min-width: 240px;
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    background: #ffffff;
    padding: 1rem 1.2rem;
    font-size: 1.1rem;
    color: var(--text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(237, 108, 17, 0.25);
}

button {
    border: none;
    border-radius: 18px;
    padding: 1rem 2rem;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    background: linear-gradient(130deg, var(--accent), var(--accent-strong));
    color: #0b1120;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 15px 30px rgba(209, 95, 15, 0.4);
}

.result-card {
    margin-top: 3rem;
    border-radius: 24px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    padding: 2rem;
    background: #ffffff;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.result-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.result-header strong {
    font-size: 1.2rem;
    color: var(--text);
}

.meta {
    display: grid;
    gap: 0.6rem;
    color: var(--muted);
}

.meta span {
    font-weight: 500;
    color: var(--text);
}

.badge {
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    background: rgba(237, 108, 17, 0.15);
    color: var(--accent);
    font-size: 0.95rem;
}

.pdf-preview {
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.2);
    min-height: 400px;
    background: #ffffff;
}

.cta-row {
    display: flex;
    justify-content: flex-end;
    margin-top: 1.6rem;
}

.hint {
    margin-top: 1.8rem;
    color: var(--muted);
    font-size: 0.95rem;
}

.empty-state {
    border-radius: 20px;
    border: 1px dashed rgba(148, 163, 184, 0.6);
    padding: 2rem;
    text-align: center;
    color: var(--muted);
    margin-top: 2rem;
    background: #ffffff;
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.qr-card {
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    padding: 1rem;
    background: #ffffff;
    text-align: center;
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
}

.qr-card img {
    max-width: 160px;
    width: 100%;
    border-radius: 12px;
    background: #ffffff;
    padding: 0.75rem;
}

.qr-code-text {
    margin-top: 0.75rem;
    padding: 0.4rem 0.8rem;
    border-radius: 10px;
    font-weight: 600;
    letter-spacing: 0.05em;
    background: rgba(148, 163, 184, 0.15);
    color: var(--text);
    display: inline-block;
}

.qr-card strong {
    display: block;
    margin-top: 1rem;
}

.qr-card small {
    color: var(--muted);
}

@media (max-width: 640px) {
    .user-card {
        padding: 1.75rem;
    }

    form {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}