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

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #0f172a, #1e293b);
    color: #f8fafc;
}

main {
    width: 100%;
    padding: 20px;
}

.emoji-app {
    max-width: 420px;
    margin: 0 auto;
    background-color: #111827;
    border: 1px solid #334155;
    border-radius: 14px;
    padding: 28px 22px;
    text-align: center;
}

h1 {
    font-size: 34px;
    margin-bottom: 10px;
}

p {
    color: #cbd5e1;
    margin-bottom: 18px;
}

.emoji-box {
    width: 130px;
    height: 130px;
    margin: 0 auto 16px;
    border-radius: 16px;
    background-color: #f8fafc;
    color: #0f172a;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 64px;
    box-shadow: 0 14px 30px rgba(2, 6, 23, 0.45);
}

button {
    border: none;
    border-radius: 10px;
    padding: 11px 20px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    color: white;
    background-color: #3b82f6;
    transition: all 0.2s ease;
}

button:hover {
    background-color: #2563eb;
    transform: translateY(-1px);
}