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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    max-width: 600px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    position: relative;
}

.container:hover {
    transform: translateY(-5px);
}

h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 2.5rem;
    font-weight: 700;
}

.tip-container {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 30px;
    margin: 30px 0;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-left: 5px solid #667eea;
    transition: all 0.3s ease;
}

.tip-text {
    font-size: 1.3rem;
    line-height: 1.6;
    color: #555;
    font-weight: 500;
}

.btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

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

.tip-number {
    position: absolute;
    top: 20px;
    right: 20px;
    background: #667eea;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    font-size: 0.85rem;
    color: #777;
    font-weight: 400;
    letter-spacing: 0.5px;
}

@media (max-width: 600px) {
    .container {
        padding: 30px 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .tip-text {
        font-size: 1.1rem;
    }
}