:root {
    --bg: #f4f5fb;
    --card: #ffffff;
    --text: #151827;
    --muted: #6b7280;
    --primary: #6d5dfc;
    --primary-dark: #5145cd;
    --border: rgba(255, 255, 255, 0.7);
    --shadow: 0 30px 80px rgba(24, 30, 64, 0.16);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 10% 10%, rgba(109, 93, 252, 0.22), transparent 32%),
        radial-gradient(circle at 90% 20%, rgba(236, 72, 153, 0.16), transparent 30%),
        radial-gradient(circle at 50% 100%, rgba(34, 197, 94, 0.12), transparent 32%),
        var(--bg);
}

.page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.hero {
    width: 100%;
    max-width: 1160px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    align-items: center;
}

.hero-card,
.preview-card {
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid var(--border);
    border-radius: 34px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.hero-card {
    padding: 46px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 46px;
    font-size: 20px;
    font-weight: 900;
}

.logo-icon {
    width: 46px;
    height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #eef2ff;
    border-radius: 16px;
    font-size: 24px;
}

.eyebrow {
    margin: 0 0 14px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.11em;
}

h1 {
    max-width: 720px;
    margin: 0;
    font-size: 58px;
    line-height: 1.02;
    letter-spacing: -0.05em;
}

.description {
    max-width: 610px;
    margin: 24px 0 0;
    color: var(--muted);
    font-size: 19px;
    line-height: 1.7;
}

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 900;
    text-decoration: none;
}

.primary {
    background: var(--primary);
    color: white;
}

.primary:hover {
    background: var(--primary-dark);
}

.secondary {
    background: white;
    color: var(--text);
    border: 1px solid #e5e7eb;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 44px;
}

.features div {
    padding: 16px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid #eef0f6;
    border-radius: 20px;
}

.features strong {
    display: block;
    margin-bottom: 6px;
    font-size: 17px;
}

.features span {
    color: var(--muted);
    font-size: 14px;
}

.preview-card {
    padding: 26px;
    transform: rotate(1.5deg);
}

.preview-header {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.preview-header span {
    width: 12px;
    height: 12px;
    background: #d1d5db;
    border-radius: 50%;
}

.birthday-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 14px;
    padding: 22px;
    background: white;
    border: 1px solid #eef0f6;
    border-radius: 24px;
}

.birthday-card.active {
    background: #111827;
    color: white;
}

.birthday-card p {
    margin: 0 0 7px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 800;
}

.birthday-card.active p {
    color: rgba(255, 255, 255, 0.68);
}

.birthday-card h3 {
    margin: 0;
    font-size: 28px;
}

.birthday-card span {
    font-size: 34px;
}

@media (max-width: 900px) {
    .page {
        padding: 18px;
    }

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

    .hero-card {
        padding: 30px;
    }

    h1 {
        font-size: 40px;
    }

    .description {
        font-size: 17px;
    }

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

    .preview-card {
        transform: none;
    }
}