* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #fff;
    overflow-x: hidden;
    position: relative;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 40px 0;
    margin-bottom: 30px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

.tip-section {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tip-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.tip-header {
    padding: 20px;
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
}

.tip-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    font-weight: bold;
    font-size: 1.2rem;
}

.tip-title {
    font-size: 1.4rem;
}

.tip-content {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.5s ease;
}

.tip-content.active {
    padding: 20px;
    max-height: 300px;
}

.tip-content p {
    line-height: 1.6;
    font-size: 1.1rem;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: auto;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Animations de fond */
@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(10px, -10px) rotate(5deg); }
    50% { transform: translate(-5px, 5px) rotate(-5deg); }
    75% { transform: translate(-10px, -5px) rotate(3deg); }
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite ease-in-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .tip-title {
        font-size: 1.2rem;
    }
    
    .tip-content p {
        font-size: 1rem;
    }
    
    .tip-header {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .tip-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .tip-number {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}