:root {
    --primary-color: #151B54;
    --accent-color: #FFCE1B;
    --text-color: #333;
    --background-color: #fff;
    --gradient: linear-gradient(135deg, #151B54, #1E3799);
    --neon-glow: 0 0 5px rgba(255, 206, 27, 0.5),
                 0 0 20px rgba(255, 206, 27, 0.3);
    --itemWidth: min(220px, 30vw);
    --itemWidthMinus: calc(-1 * var(--itemWidth));
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background-color: var(--primary-color);
}

#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

main {
    position: relative;
    z-index: 1;
    background-color: rgba(218, 215, 215, 0.700);
    max-width: 1200px;
    margin: 80px auto 0;
    padding: 2rem;
}

header {
    background: var(--gradient);
    color: var(--background-color);
    padding: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    color: var(--background-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    padding: 5px 0;
}

nav ul li a:hover {
    color: var(--accent-color);
    text-shadow: var(--neon-glow);
}

section {
    margin: 4rem 0;
    text-align: center;
}

#accueil {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.service-item {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--primary-color);
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-color: var(--primary-color);
    color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.contact-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.contact-circle {
    margin: 0 auto;
    box-shadow: 
        inset var(--itemWidthMinus) var(--itemWidthMinus) 0 #151B54, 
        inset var(--itemWidth) var(--itemWidthMinus) 0 green, 
        inset var(--itemWidthMinus) var(--itemWidth) 0 blue, 
        inset var(--itemWidth) var(--itemWidth) 0 yellow, 
        0 0 20px silver;
    transition: box-shadow ease-in-out .6s;    
    width: 220px;
    height: 220px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: pointer;
    position: relative;
}

.contact-text-circle {
    color: #FFCE1B;
    font-family: 'Averia Serif Libre', serif;
    font-size: calc(var(--itemWidth) / 7);
    transition: opacity 0.5s ease-in-out;
    user-select: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    text-align: center;
}

.contact-info {
    position: absolute;
    color: #FFCE1B;
    font-family: 'Averia Serif Libre', serif;
    font-size: calc(var(--itemWidth) / 10);
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.contact-circle:hover .contact-text-circle {
    opacity: 0;
}

.contact-phone {
    font-size: calc(var(--itemWidth) / 8);
}

.contact-email {
    font-size: calc(var(--itemWidth) / 13);
}
.contact-circle:hover .contact-info {
    opacity: 1;
}

.contact-info p {
    margin: 5px 0;
}

.mobile-text {
    display: none;
}

input, textarea {
    width: 100%;
    margin-bottom: 1rem;
    padding: 1rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus, textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 5px rgba(21, 27, 84, 0.2);
}

textarea {
    min-height: 150px;
    resize: vertical;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: absolute;
    right: 2rem;
    top: 1.5rem;
}

.menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--background-color);
    transition: all 0.3s ease;
}

footer {
    background: var(--gradient);
    color: var(--background-color);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        padding: 1rem;
    }

    nav ul {
        margin-top: 1rem;
    }

    nav ul li {
        margin: 0 1rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .menu-toggle {
        display: flex;
    }

    nav ul {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
        margin-top: 1rem;
    }

    nav ul.active {
        display: flex;
    }

    nav ul li {
        margin: 1rem 0;
        width: 100%;
        text-align: center;
    }

    main {
        margin-top: 60px;
        padding: 1rem;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1rem;
    }

    .cta-button {
        padding: 0.8rem 1.6rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    :root {
        --itemWidth: min(150px, 70vw);
    }
    
    .contact-text-circle {
        font-size: calc(var(--itemWidth) / 9);
    }
    
    .contact-text {
        font-size: 0.7rem;
    }

    nav {
        padding: 0.8rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    main {
        margin-top: 50px;
        padding: 0.8rem;
    }

    h1 {
        font-size: 2rem;
        margin-bottom: 0.8rem;
    }

    h2 {
        font-size: 1.7rem;
    }

    section {
        margin: 2rem 0;
    }

    #accueil {
        padding: 2rem 1rem;
    }

    .service-grid {
        padding: 0.5rem;
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    #accueil {
        min-height: auto;
        padding: 2rem 1rem;
    }
    
    main {
        margin-top: 50px;
    }
}