:root {
    --primary-color: #7a9c86;
    --secondary-color: #45a049;
    --text-color: #333;
    --bg-color: #f8f7f4;
    --hero-overlay: rgba(255, 255, 255, 0.6);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
}

a {
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s;
}

p {
    font-size: 18px;
    text-align: center;
    margin: 10px;
    padding: 5px;
}

/* ===================== HEADER ===================== */
header {
    padding: 20px;
    background-color: #fff;
}

nav a {
    margin-left: 20px;
    color: var(--primary-color);
    font-size: 18px;
}

/* ===================== BUTTONS ===================== */
.btn-contact {
    background-color: var(--primary-color);
    color: #fff;
    padding: 15px 30px;
    border-radius: 30px;
    display: inline-block;
    transition: background 0.3s, transform 0.3s;
}

.btn-contact:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* ===================== HERO ===================== */
.hero {
    position: relative;
    background-image: url('assets/Gemini_Generated_Image_sfmp31sfmp31sfmp.png');
    background-size: cover;
    background-position: center;
    text-align: center;
    padding: 205px 20px;
    color: black;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-color: var(--hero-overlay);
    z-index: 0;
}

.hero h1 {
    position: relative;
    z-index: 1;
    font-family: 'Architects Daughter';
    font-size: clamp(2rem, 6vw, 5rem);
    margin: 0;
}

/* ===================== SECTIONS ===================== */
.section {
    padding: 40px 20px;
    max-width: 1200px;
    margin: auto;
    text-align: center;
}

.section h2 {
    font-family: 'Architects Daughter';
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--primary-color);
    margin: 20px 0;
}

/* ===================== GRIDS ===================== */
.presentation-grid,
.about-grid {
    display: grid;
    grid-template-columns: minmax(250px, 1fr) 2fr;
    gap: 20px;
    align-items: center;
}

.presentation-grid img,
.about-grid img,
.section img {
    max-width: 100%;
    border-radius: 10px;
    display: block;
    margin: auto;
}

.about-grid .text-col {
    text-align: left;
}

/* ===================== SERVICES ===================== */
.services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
    padding: 0 10px;
}

.service {
    background: #f5f5f5;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s, background 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.service:hover {
    background: #e9f7ef;
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.service h3 {
    margin-bottom: 10px;
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: #333;
}

.service p {
    font-size: 0.95em;
    color: #555;
}

.service ul {
    list-style: none;
    padding: 0;
    margin: 10px auto 0;
    max-width: 220px;
}

.service ul li {
    position: relative;
    margin-bottom: 8px;
    padding: 8px 12px 8px 28px;
    font-size: 0.95em;
    color: #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.service ul li::before {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1em;
}

/* ===================== MODALE ===================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-content {
    background: #fff;
    padding: 25px 20px;
    border-radius: 12px;
    max-width: 600px;
    width: 95%;
    text-align: left;
    position: relative;
    overflow-y: auto;
    max-height: 90vh;
}

.modal-content h3 {
    margin-bottom: 15px;
    text-align: center;
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    color: #2c3e50;
}

.modal-content img {
    max-width: 100%;
    border-radius: 10px;
    margin: 15px auto;
    display: block;
}

.modal-text {
    text-align: left;
}

.modal-text p {
    font-size: 1em;
    line-height: 1.5;
    color: #444;
}

.modal-text ul {
    margin: 10px 0 15px 20px;
    padding: 0;
    list-style-type: disc;
    text-align: left;
}

.modal-text ul li {
    margin-bottom: 8px;
}

.modal .close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #555;
    transition: color 0.3s;
}

.modal .close:hover {
    color: #000;
}

/* ===================== PARTENARIATS ===================== */
#partenariats .about-grid {
    display: flex;
    flex-direction: column; /* un seul partenaire centré */
    align-items: center;
    gap: 20px;
    text-align: center;
    padding: 0 10px;
}

#partenariats .partner {
    max-width: 500px; /* largeur du bloc partenaire */
    display: flex;
    flex-direction: column; /* texte en colonne */
    align-items: center;
    gap: 15px;
}

#partenariats .text-col {
    text-align: center;
}

#partenariats img {
    max-width: 100%;
    border-radius: 10px;
    display: block;
    margin: 0 auto 10px;
}

#partenariats p, #partenariats ul {
    margin: 5px 0;
    font-size: 16px;
    line-height: 1.4;
}

#partenariats ul {
    padding-left: 0;
    list-style: none;
}

#partenariats ul li {
    margin-bottom: 5px;
}

@media (min-width: 769px) {
    #partenariats .about-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        justify-items: start;
        text-align: left;
    }

    #partenariats .partner {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    #partenariats .text-col {
        text-align: left;
    }
}

/* ===================== BACK TO TOP ===================== */
#back-to-top {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 12px 25px;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 30px;
    font-size: 16px;
    transition: opacity 0.3s, transform 0.3s, background 0.3s;
    z-index: 1000;
    opacity: 0;
}

#back-to-top.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

#back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

/* ===================== FOOTER ===================== */
footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 30px 20px;
    margin-top: 60px;
}

/* ===================== RESPONSIVE ===================== */
@media(max-width:768px) {

    .presentation-grid,
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-grid .text-col {
        text-align: center;
    }

    .services {
        grid-template-columns: 1fr;
    }

    .modal-content {
        padding: 20px 15px;
    }

    .modal-text p {
        font-size: 0.95em;
    }

    p {
        font-size: 16px;
    }
}