:root {
    --purple: #5b247a;
    --purple-deep: #542d90;
    --cyan: #1bcedf;
    --text-dark: #2a1838;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
}

body {
    font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: radial-gradient(circle at 30% 20%, rgba(27, 206, 223, 0.18), transparent 55%),
        linear-gradient(135deg, var(--purple) 0%, var(--purple-deep) 45%, var(--cyan) 100%);
    color: var(--text-dark);
}

.card {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(6px);
    border-radius: 28px;
    padding: 3.5rem 3rem;
    width: 100%;
    max-width: 460px;
    text-align: center;
    box-shadow: 0 24px 60px rgba(42, 24, 56, 0.35);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.logo {
    width: 100%;
    max-width: 320px;
    height: auto;
    user-select: none;
}

.linkedin-button {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.95rem 2rem;
    border-radius: 999px;
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(135deg, var(--purple) 0%, var(--cyan) 100%);
    box-shadow: 0 10px 24px rgba(91, 36, 122, 0.35);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.linkedin-button:hover,
.linkedin-button:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(91, 36, 122, 0.45);
    outline: none;
}

.linkedin-icon {
    width: 22px;
    height: 22px;
    fill: currentColor;
    flex-shrink: 0;
}

.org-number {
    margin-top: -1.25rem;
    font-size: 0.8rem;
    color: var(--purple-deep);
    text-decoration: none;
    opacity: 0.75;
    transition: opacity 0.18s ease;
}

.org-number:hover,
.org-number:focus-visible {
    opacity: 1;
    text-decoration: underline;
    outline: none;
}

@media (max-width: 480px) {
    .card {
        padding: 2.5rem 1.75rem;
        gap: 2rem;
    }
}