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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #1a2a6c);
    color: #333;
    line-height: 1.6;
}

.presentation-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    min-height: 90vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 20px 0;
    border-bottom: 2px solid #1a2a6c;
    margin-bottom: 30px;
}

header h1 {
    color: #1a2a6c;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    color: #b21f1f;
    font-size: 1.2rem;
}

/* Conteneur des diapositives */
.slide-container {
    flex-grow: 1;
    margin-bottom: 30px;
}

.slide {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.slide.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide h2 {
    color: #1a2a6c;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.slide p {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.slide ul {
    margin-left: 30px;
    margin-bottom: 20px;
}

.slide li {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

/* Navigation */
.navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.nav-btn {
    background: linear-gradient(to right, #1a2a6c, #b21f1f);
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 1rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.nav-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.nav-btn:active {
    transform: translateY(1px);
}

.slide-indicators {
    display: flex;
    gap: 10px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #ccc;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background-color: #1a2a6c;
    transform: scale(1.2);
}

.indicator:hover {
    background-color: #1a2a6c;
    transform: scale(1.2);
}

/* Responsive design */
@media (max-width: 768px) {
    .presentation-container {
        padding: 10px;
        margin: 10px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .navigation {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .slide h2 {
        font-size: 1.5rem;
    }
    
    .slide p, .slide li {
        font-size: 1rem;
    }
}