/* ==============================================
   COM'ATLANTIC - Site Web Corporate
   Téléprospection BtoB
   ============================================== */

/* === VARIABLES DE COULEURS === */
/* Palette SOMBRE inspirée du site de référence (violet foncé dominant) */
:root {
    /* Couleurs principales - TOUT EST SOMBRE */
    --color-fond-principal: #130723;    /* Violet très foncé (comme référence) - Base */
    --color-section-fonce-1: #130723;   /* Violet foncé 1 - Sections alternées */
    --color-section-fonce-2: #130723;   /* Violet foncé 2 - Sections alternées */
    --color-section-fonce-3: #130723;   /* Violet foncé 3 - Sections alternées */
    
    /* Accents lumineux (bordures, icônes, hover) */
    --color-accent-violet: #8A6FDF;     /* Violet clair - Accents */
    --color-accent-bleu: #9D8FE8;       /* Bleu-violet clair - Accents secondaires */
    --color-accent-hover: #B8A6FF;      /* Lavande très clair - Hover */
    
    /* Couleurs neutres */
    --color-blanc: #FFFFFF;
    --color-gris-clair: #D4D4E8;        /* Gris clair pour sous-titres */
    --color-gris: #8B8BA0;
    --color-noir: #0F0825;              /* Noir-violet ultra foncé */
    
    /* Aliases pour compatibilité (anciennes classes) */
    --color-violet: #3D2A6B;            /* Pour .bg-violet - SOMBRE */
    --color-vert: #2F1E55;              /* Pour .bg-vert - SOMBRE (pas bleu ciel !) */
    --color-bleu-marine: #2A1A4E;       /* Pour .bg-bleu-marine - SOMBRE */
}

/* === RESET ET BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--color-blanc);
    /* Fond TRÈS foncé comme le site de référence */
    background: linear-gradient(135deg, #0F0825 0%, #1A0F3A 50%, #2A1A4E 100%);
    background-attachment: fixed;
}

/* === TYPOGRAPHIE === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--color-accent-violet);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-accent-hover);
}

/* === HEADER ET NAVIGATION === */
.header {
    background-color: var(--color-section-fonce-1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
    border-bottom: 3px solid var(--color-accent-violet);
}

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

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 90px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--color-blanc);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    background-color: var(--color-accent-violet);
    color: var(--color-blanc);
}

.btn-phone {
    background-color: var(--color-accent-violet);
    color: var(--color-blanc);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-phone:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(138, 111, 223, 0.4);
}

/* Menu Mobile */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-blanc);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

/* === HERO SECTION === */
.hero {
    background: linear-gradient(135deg, var(--color-section-fonce-1) 0%, #1A0F3A 100%);
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../images/hero-call-center.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--color-blanc);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--color-gris-clair);
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
}

.btn-primary {
    background-color: var(--color-accent-violet);
    color: var(--color-blanc);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(138, 111, 223, 0.4);
}

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

.btn-secondary:hover {
    background-color: var(--color-blanc);
    color: var(--color-section-fonce-1);
}

/* === SECTIONS === */
section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.2rem;
    color: var(--color-gris-clair);
    max-width: 700px;
    margin: 0 auto;
}

/* Sections avec couleurs alternées - TOUTES SOMBRES avec variations subtiles */
.bg-violet {
    background-color: var(--color-section-fonce-2);
    /* Violet foncé #3D2A6B - Plus clair que le fond mais reste SOMBRE */
}

.bg-vert {
    background-color: var(--color-section-fonce-3);
    /* Violet foncé #2F1E55 - PAS de bleu ciel ! Reste dans les tons violets foncés */
}

.bg-bleu-marine {
    background-color: var(--color-section-fonce-1);
    /* Violet foncé #2A1A4E - Variations subtiles dans le sombre */
}

.bg-bleu-fonce {
    background: linear-gradient(135deg, #1A0F3A 0%, #2A1A4E 100%);
    /* Dégradé violet très foncé */
}

/* === CARDS === */
.services-grid,
.methode-grid,
.valeurs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--color-blanc);
    background-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 40px rgba(0,0,0,0.3);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--color-accent-violet);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-blanc);
}

.card p {
    color: var(--color-gris-clair);
    margin-bottom: 0;
}

/* Services colorés */
.service-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
    border: 2px solid rgba(255,255,255,0.2);
}

.service-card.violet {
    border-left: 5px solid var(--color-accent-violet);
}

.service-card.vert {
    border-left: 5px solid var(--color-accent-bleu);
}

/* === TARIFS === */
.tarifs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);  /* ← 2 colonnes fixes */
    gap: 2rem;
    margin-top: 2rem;
}

.tarif-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    border-radius: 15px;
    padding: 2.5rem;
    text-align: center;
    border: 2px solid rgba(255,255,255,0.2);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tarif-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--color-accent-violet), var(--color-accent-bleu));
}

.tarif-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent-violet);
    box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

.tarif-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.prix {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-violet);
    margin: 1.5rem 0;
}

.tarif-card ul {
    list-style: none;
    text-align: left;
    margin: 2rem 0;
}

.tarif-card ul li {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tarif-card ul li:last-child {
    border-bottom: none;
}

.tarif-card ul li i {
    color: var(--color-accent-violet);
}

/* === FORMULAIRE DE CONTACT === */
.contact-form {
    max-width: 600px;
    margin: 2rem auto;
    background: rgba(255,255,255,0.1);
    padding: 2.5rem;
    border-radius: 15px;
    border: 2px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-blanc);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background-color: rgba(255,255,255,0.1);
    color: var(--color-blanc);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent-violet);
    background-color: rgba(255,255,255,0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.5);
}

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

.btn-submit {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-accent-violet);
    color: var(--color-blanc);
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(138, 111, 223, 0.4);
}

/* === FOOTER === */
.footer {
    background-color: #1a252f;
    padding: 3rem 0 1rem;
    color: var(--color-gris-clair);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--color-accent-violet);
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--color-gris-clair);
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--color-accent-violet);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: var(--color-accent-violet);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-blanc);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--color-gris);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-section-fonce-1);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .services-grid,
    .methode-grid,
    .valeurs-grid,
    .tarifs-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* === UTILITAIRES === */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--color-accent-violet);
    color: var(--color-blanc);
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.back-to-top:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-5px);
}

.back-to-top.show {
    display: flex;
}