/* Feuille de style pour écran - Site "Découvrez Paris" */

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color:#333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* Container principal */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 300;
    letter-spacing: 2px;
}

/* Navigation */
nav {
    text-align: center;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
}

nav li {
    margin: 0;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    border: 2px solid transparent;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Main content */
main {
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

section {
    background: white;
    margin: 2rem 0;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Typography */
h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #34495e;
    border-bottom: 3px solid #3498db;
    padding-bottom: 0.5rem;
    display: inline-block;
}

h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem 0;
    color: #2980b9;
    position: relative;
    padding-left: 20px;
}

h3::before {
    content: "◆";
    position: absolute;
    left: 0;
    color: #e74c3c;
    font-size: 1.2rem;
}

h4 {
    font-size: 1.2rem;
    margin: 1.5rem 0 0.8rem 0;
    color: #8e44ad;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    text-align: justify;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin: 1.5rem 0;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

img:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Lists */
ul {
    margin: 1rem 0;
    padding-left: 2rem;
}

li {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    position: relative;
}

li::marker {
    color: #3498db;
    font-size: 1.2rem;
}

/* Footer */
footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.1);
}

footer p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav a {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
    }
    
    section {
        padding: 1.5rem;
        margin: 1rem 0;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.3rem;
    }
    
    main {
        padding: 2rem 0;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    section {
        padding: 1rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    p {
        font-size: 1rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

section {
    animation: fadeInUp 0.6s ease-out;
}

/* Amélioration de l'accessibilité */
:focus {
    outline: 3px solid #3498db;
    outline-offset: 2px;
}

/* Amélioration de la lisibilité */
::selection {
    background: #3498db;
    color: white;
}