/* --- Variables CSS --- */
:root {
    --primary-color: #8A2BE2; /* Bleu violet */
    --secondary-color: #4B0082; /* Indigo/Violet foncé */
    --accent-color: #FFD700; /* Or / Jaune */
    --text-color-dark: #333;
    --text-color-light: #f4f4f4;
    --bg-light: #f9f9f9;
    --bg-dark: #2c2c2c; /* Pour les sections sombres */
    --card-bg: #ffffff;
    --border-color: #ddd;
    --whatsapp-green: #25D366;
}

/* --- Base --- */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: var(--text-color-dark);
    background-color: var(--bg-light);
}

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

h1, h2, h3 {
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 20px;
}

h1 { font-size: 2.8em; margin-top: 40px; }
h2 { font-size: 2.2em; margin-top: 60px; }
h3 { font-size: 1.8em; margin-bottom: 15px; }

p.subtitle {
    text-align: center;
    font-size: 1.1em;
    color: #666;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

section {
    padding: 80px 0;
}

/* --- Boutons Génériques --- */
.btn {
    display: inline-block;
    padding: 12px 25px;
    margin: 10px 10px 10px 0;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, color 0.3s ease;
    text-align: center;
}

.primary-btn {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border: 2px solid var(--primary-color);
}

.primary-btn:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.secondary-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.secondary-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-color-light);
}

.whatsapp-btn, .whatsapp-cta {
    background-color: var(--whatsapp-green);
    color: white;
    border: none;
    cursor: pointer;
    padding: 10px 20px;
    margin-top: 15px;
    border-radius: 5px;
    font-size: 0.9em;
    text-decoration: none; /* Pour le CTA */
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.whatsapp-btn i, .whatsapp-cta i {
    margin-right: 8px;
}

.whatsapp-btn:hover, .whatsapp-cta:hover {
    background-color: #21b854;
}

/* --- Header --- */
header {
    background-color: var(--bg-dark);
    color: var(--text-color-light);
    padding: 15px 0;
    border-bottom: 3px solid var(--primary-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header .logo {
    display: flex;
    align-items: center;
    font-size: 1.8em;
    font-weight: bold;
}

header .logo img {
    height: 40px; /* Taille du logo AstraPanel */
    margin-right: 10px;
}

header .nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

header .nav-links li {
    margin-left: 25px;
}

header .nav-links a {
    color: var(--text-color-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

header .nav-links a:hover {
    color: var(--accent-color);
}

/* --- Hero Section (Index Page) --- */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-color-light);
    padding: 100px 0;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero .container {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-around;
    gap: 30px;
    flex-wrap: wrap; /* Pour la responsivité */
}

.hero-content {
    max-width: 600px;
    text-align: left;
}

.hero-content h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: var(--text-color-light);
}

.hero-content p {
    font-size: 1.3em;
    margin-bottom: 30px;
    line-height: 1.5;
}

.hero-image {
    max-width: 400px;
    flex-shrink: 0;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

/* --- Section Avantages (Index Page) --- */
.section-avantages {
    background-color: var(--bg-light);
}

.avantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.avantage-item {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    border-bottom: 5px solid var(--primary-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.avantage-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.avantage-item i {
    font-size: 3em;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.avantage-item h3 {
    color: var(--secondary-color);
    font-size: 1.5em;
    margin-bottom: 10px;
}

.avantage-item p {
    color: var(--text-color-dark);
}

/* --- Section Panels (Index Page Grid) --- */
.section-panels {
    background-color: var(--bg-dark);
    color: var(--text-color-light);
}

.section-panels h2, .section-panels p.subtitle {
    color: var(--text-color-light);
}

.panel-grid-index {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.panel-card-index {
    background-color: var(--card-bg);
    color: var(--text-color-dark);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    text-align: center;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
}

.panel-card-index:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

.panel-card-index img {
    max-width: 120px; /* Taille légèrement plus petite pour l'aperçu */
    height: auto;
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.panel-card-index h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.6em;
}

.panel-card-index p {
    font-size: 0.95em;
    color: #555;
    flex-grow: 1;
}

.more-panels-cta {
    text-align: center;
    margin-top: 60px;
    padding: 30px;
    background-color: var(--secondary-color);
    color: var(--text-color-light);
    border-radius: 10px;
}

.more-panels-cta p {
    font-size: 1.2em;
    margin-bottom: 20px;
}

/* --- Section Détail Panel (Pages individuelles) --- */
.panel-detail-section {
    padding: 60px 0;
    background-color: var(--bg-light);
}

.panel-detail-section h1 {
    font-size: 2.5em;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.back-link {
    display: inline-block;
    margin-bottom: 30px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--secondary-color);
}

.back-link i {
    margin-right: 8px;
}

.panel-detail-content {
    display: flex;
    flex-wrap: wrap; /* Pour la responsivité */
    gap: 40px;
    justify-content: center;
    align-items: flex-start;
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.panel-detail-image {
    flex: 1 1 350px; /* Taille flexible pour l'image */
    text-align: center;
}

.panel-detail-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.panel-detail-info {
    flex: 2 1 500px; /* Taille flexible pour l'info */
    text-align: left;
}

.panel-detail-info h1 {
    text-align: left;
    margin-top: 0;
}

.panel-detail-info h3 {
    text-align: left;
    color: var(--secondary-color);
    margin-top: 25px;
}

.panel-detail-info ul {
    list-style: none;
    padding: 0;
    margin-bottom: 25px;
}

.panel-detail-info ul li {
    background-color: #e8f0fe; /* Light background for list items */
    padding: 10px 15px;
    margin-bottom: 8px;
    border-radius: 5px;
    color: var(--text-color-dark);
    font-size: 0.95em;
    border-left: 3px solid var(--primary-color);
}

.panel-detail-info .panel-tagline {
    font-style: italic;
    color: #666;
    margin-bottom: 20px;
    font-size: 1.1em;
    text-align: left;
}


/* --- Section Témoignages (Index Page) --- */
.section-temoignages {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
}

.temoignages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.temoignage-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    font-style: italic;
    border-left: 5px solid var(--accent-color);
}

.temoignage-card .quote {
    font-size: 1.1em;
    margin-bottom: 20px;
    color: var(--text-color-dark);
}

.temoignage-card .author {
    font-weight: bold;
    color: var(--secondary-color);
}

/* --- Section FAQ (Index Page) --- */
.section-faq {
    background-color: var(--bg-dark);
    color: var(--text-color-light);
}

.section-faq h2 {
    color: var(--text-color-light);
}

.faq-item {
    background-color: var(--secondary-color);
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    background-color: var(--secondary-color);
    color: var(--text-color-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1em;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: rgba(75, 0, 130, 0.8); /* Lighter shade of secondary on hover */
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    background-color: var(--card-bg);
    color: var(--text-color-dark);
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out, padding 0.5s ease-out;
}

.faq-answer p {
    padding-bottom: 20px;
    margin: 0;
}

/* --- Section Contact (Index Page) --- */
.section-contact {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
}

.contact-info {
    text-align: center;
    margin-top: 40px;
    font-size: 1.1em;
}

.contact-info p {
    margin-bottom: 15px;
}

.contact-info i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.3em;
}

.contact-info a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* --- Footer (Common to all pages) --- */
footer {
    background-color: var(--bg-dark);
    color: var(--text-color-light);
    text-align: center;
    padding: 30px 0;
    font-size: 0.9em;
    border-top: 3px solid var(--primary-color);
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    header .nav-links {
        display: none; /* Vous pourriez ajouter un menu hamburger ici */
    }

    header .logo {
        width: 100%;
        justify-content: center;
    }

    .hero .container {
        flex-direction: column;
    }

    .hero-content {
        text-align: center;
        max-width: 100%;
    }

    .hero-content h1 {
        font-size: 2.5em;
    }

    .hero-content p {
        font-size: 1.1em;
    }

    .hero-image {
        margin-top: 40px;
    }

    .btn {
        margin: 10px auto;
        display: block;
        width: 80%; /* Pour les rendre plus grands sur mobile */
    }

    h1 { font-size: 2.2em; }
    h2 { font-size: 1.8em; }
    h3 { font-size: 1.4em; }

    section {
        padding: 50px 0;
    }

    .avantages-grid, .panel-grid-index, .temoignages-grid {
        grid-template-columns: 1fr; /* Une colonne sur petits écrans */
    }

    .panel-detail-content {
        flex-direction: column;
        padding: 20px;
        align-items: center;
    }

    .panel-detail-info h1, .panel-detail-info h3, .panel-detail-info .panel-tagline {
        text-align: center;
    }

    .panel-detail-info ul {
        text-align: left; /* Conserver la liste alignée à gauche */
        width: 100%;
    }
}