* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #ff9a9e, #fad0c4);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background-color: white;
    border-radius: 20px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12); /* sombra mais leve */
    padding: 30px 20px;
    text-align: center;
    max-width: 360px;
    width: 100%;
}

.circle {
    width: 90px;
    height: 90px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #ff758c, #ff9a9e);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 38px;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(255, 117, 140, 0.35); /* mais leve */
}

h1 {
    color: #ff5c8d;
    margin-bottom: 12px;
    font-size: 24px;
    font-weight: 700;
}

p {
    color: #555;
    margin-bottom: 20px;
    font-size: 15px;
    line-height: 1.4;
}

.countdown {
    font-size: 38px;
    font-weight: bold;
    color: #ff5c8d;
    margin: 20px 0;
    height: 45px;
    will-change: transform; /* otimização */
}

.btn {
    background: linear-gradient(to right, #ff5c8d, #ff97b3);
    color: white;
    border: none;
    padding: 14px 28px;
    font-size: 16px;
    border-radius: 28px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-weight: 600;
    width: 100%;
    max-width: 230px;
    box-shadow: 0 4px 12px rgba(255, 92, 141, 0.35);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 92, 141, 0.45);
}

.btn:active {
    transform: translateY(0);
}

.note {
    margin-top: 20px;
    font-size: 13px;
    color: #777;
}

/* animação mais leve */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 1s ease-in-out;
}