/* ========================================
   FOOTER PROFESSIONNEL - CSS
   ======================================== */

/* Variables CSS pour une maintenance facile */
:root {
    --footer-bg-primary: #1a1a1a;
    --footer-bg-secondary: #0f0f0f;
    --footer-text-primary: #ffffff;
    --footer-text-secondary: #b0b0b0;
    --footer-text-muted: #888888;
    --footer-accent: #2563eb;
    --footer-accent-hover: #1d4ed8;
    --footer-border: #333333;
    --footer-input-bg: #2a2a2a;
    --footer-input-border: #404040;
    --footer-success: #10b981;
    --footer-error: #ef4444;
    --footer-warning: #f59e0b;
    --footer-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
    --footer-transition: all 0.3s ease;
    --footer-border-radius: 8px;
    --footer-spacing: 1.5rem;
}

/* ========================================
   SECTION FOOTER PRINCIPALE
   ======================================== */
.footer-section {
    position: relative;
    background: var(--footer-bg-primary);
    color: var(--footer-text-primary);
    box-shadow: var(--footer-shadow);
}

.footer-main {
    padding: 4rem 0 2rem;
    position: relative;
}

.footer-main::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--footer-border),
        transparent
    );
}

/* ========================================
   WIDGETS FOOTER
   ======================================== */
.footer-widget {
    margin-bottom: 2rem;
}

.widget-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--footer-text-primary);
    margin-bottom: var(--footer-spacing);
    position: relative;
    padding-bottom: 0.5rem;
}

.widget-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--footer-accent);
    border-radius: 1px;
}

/* ========================================
   LOGO ET BRANDING
   ======================================== */
.footer-logo {
    margin-bottom: 2rem;
}

.footer-logo .logo {
    text-decoration: none;
    color: var(--footer-text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    transition: var(--footer-transition);
}

.footer-logo .logo:hover {
    color: var(--footer-accent);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--footer-accent);
    border-radius: var(--footer-border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.75rem;
    transition: var(--footer-transition);
}

.logo-icon i {
    font-size: 1.25rem;
    color: white;
}

.footer-logo .logo:hover .logo-icon {
    background: var(--footer-accent-hover);
    transform: scale(1.05);
}

.footer-tagline {
    color: var(--footer-text-secondary);
    font-size: 0.95rem;
    margin-top: 0.5rem;
    margin-bottom: 0;
    font-style: italic;
}

/* ========================================
   INFORMATIONS DE CONTACT
   ======================================== */
.footer-contact {
    margin-bottom: 2rem;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
    padding: 0.75rem;
    border-radius: var(--footer-border-radius);
    transition: var(--footer-transition);
}

.footer-contact-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--footer-border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.1rem;
    color: var(--footer-accent);
}

.footer-contact-info p {
    margin: 0;
    color: var(--footer-text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.footer-contact-info strong {
    color: var(--footer-text-primary);
    font-weight: 600;
}

.footer-contact-info a {
    color: var(--footer-text-primary);
    text-decoration: none;
    transition: var(--footer-transition);
}

.footer-contact-info a:hover {
    color: var(--footer-accent);
}

/* ========================================
   LIENS SOCIAUX
   ======================================== */
.social-links h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--footer-text-primary);
    margin-bottom: 1rem;
}

.footer-social-icons {
    display: flex;
    gap: 0.75rem;
}

.footer-social-link {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--footer-border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--footer-text-secondary);
    text-decoration: none;
    transition: var(--footer-transition);
    backdrop-filter: blur(10px);
}

.footer-social-link:hover {
    background: var(--footer-accent);
    border-color: var(--footer-accent);
    color: white;
    transform: translateY(-2px);
}

.footer-social-link i {
    font-size: 1.1rem;
}

/* ========================================
   MENU FOOTER
   ======================================== */
.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-menu a {
    color: var(--footer-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--footer-transition);
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    border-radius: 4px;
}

.footer-menu a::before {
    content: "";
    width: 4px;
    height: 4px;
    background: var(--footer-accent);
    border-radius: 50%;
    margin-right: 0.75rem;
    opacity: 0;
    transition: var(--footer-transition);
}

.footer-menu a:hover {
    color: var(--footer-text-primary);
    padding-left: 0.5rem;
}

.footer-menu a:hover::before {
    opacity: 1;
}

/* ========================================
   NEWSLETTER
   ======================================== */
.newsletter-description {
    color: var(--footer-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.newsletter-form {
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.input-wrapper {
    position: relative;
    flex: 1;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--footer-text-muted);
    font-size: 1rem;
    z-index: 2;
}

.input-wrapper .form-control {
    background: var(--footer-input-bg);
    border: 1px solid var(--footer-input-border);
    border-radius: var(--footer-border-radius);
    color: var(--footer-text-primary);
    padding: 0.875rem 1rem 0.875rem 2.5rem;
    font-size: 0.95rem;
    transition: var(--footer-transition);
}

.input-wrapper .form-control:focus {
    background: var(--footer-input-bg);
    border-color: var(--footer-accent);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
    color: var(--footer-text-primary);
}

.input-wrapper .form-control::placeholder {
    color: var(--footer-text-muted);
}

.newsletter-form .btn {
    background: var(--footer-accent);
    border: 1px solid var(--footer-accent);
    color: white;
    padding: 0.875rem 1.5rem;
    border-radius: var(--footer-border-radius);
    font-weight: 600;
    transition: var(--footer-transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.newsletter-form .btn:hover {
    background: var(--footer-accent-hover);
    border-color: var(--footer-accent-hover);
    transform: translateY(-1px);
}

/* ========================================
   FEEDBACK FORMULAIRE
   ======================================== */
.form-feedback {
    font-size: 0.9rem;
}

.form-feedback > div {
    display: none;
    padding: 0.75rem;
    border-radius: var(--footer-border-radius);
    margin-bottom: 0.5rem;
    align-items: center;
    gap: 0.5rem;
}

.form-feedback.loading .loading-message {
    display: flex;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--footer-warning);
}

.form-feedback.error .error-message {
    display: flex;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--footer-error);
}

.form-feedback.success .success-message {
    display: flex;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--footer-success);
}

.loading-message i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   AVANTAGES NEWSLETTER
   ======================================== */
.newsletter-benefits h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--footer-text-primary);
    margin-bottom: 1rem;
}

.benefits-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.benefits-list li {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    color: var(--footer-text-secondary);
    font-size: 0.9rem;
}

.benefits-list i {
    color: var(--footer-success);
    margin-right: 0.5rem;
    font-size: 0.8rem;
}

/* ========================================
   FOOTER BOTTOM
   ======================================== */
.footer-bottom {
    background: var(--footer-bg-secondary);
    border-top: 1px solid var(--footer-border);
    padding: 1.5rem 0;
}

.copyright p {
    margin: 0;
    color: var(--footer-text-muted);
    font-size: 0.9rem;
}

.copyright strong {
    color: var(--footer-text-primary);
}

.footer-bottom-links {
    display: flex;
    justify-content: flex-end;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: var(--footer-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--footer-transition);
}

.footer-bottom-links a:hover {
    color: var(--footer-accent);
}

/* ========================================
   BOUTON RETOUR EN HAUT
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--footer-transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.btn-back-to-top {
    width: 50px;
    height: 50px;
    background: var(--footer-accent);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--footer-transition);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-back-to-top:hover {
    background: var(--footer-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablettes */
@media (max-width: 768px) {
    .footer-main {
        padding: 3rem 0 1.5rem;
    }

    .input-group {
        flex-direction: column;
    }

    .newsletter-form .btn {
        width: 100%;
        justify-content: center;
    }

    .footer-bottom-links {
        justify-content: center;
        margin-top: 1rem;
    }

    .footer-social-icons {
        justify-content: center;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
    }

    .btn-back-to-top {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}

/* Mobiles */
@media (max-width: 576px) {
    .footer-main {
        padding: 2rem 0 1rem;
    }

    .widget-title {
        font-size: 1.1rem;
    }

    .footer-contact-item {
        flex-direction: column;
        text-align: center;
    }

    .contact-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }

    .footer-bottom-links {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .copyright {
        text-align: center;
        margin-bottom: 1rem;
    }
}

/* Très petits écrans */
@media (max-width: 380px) {
    .footer-social-icons {
        flex-wrap: wrap;
    }

    .footer-social-link {
        width: 40px;
        height: 40px;
    }

    .footer-logo .logo {
        font-size: 1.3rem;
    }

    .logo-icon {
        width: 35px;
        height: 35px;
    }
}

/* ========================================
   ANIMATIONS ET TRANSITIONS
   ======================================== */
.footer-widget {
    animation: fadeInUp 0.6s ease-out;
}

.footer-widget:nth-child(1) {
    animation-delay: 0.1s;
}
.footer-widget:nth-child(2) {
    animation-delay: 0.2s;
}
.footer-widget:nth-child(3) {
    animation-delay: 0.3s;
}
.footer-widget:nth-child(4) {
    animation-delay: 0.4s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   ÉTATS FOCUS ET ACCESSIBILITÉ
   ======================================== */
.footer-social-link:focus,
.footer-menu a:focus,
.btn-back-to-top:focus {
    outline: 2px solid var(--footer-accent);
    outline-offset: 2px;
}

/* Mode sombre déjà appliqué par défaut */
/* Support pour les utilisateurs préférant moins d'animations */
@media (prefers-reduced-motion: reduce) {
    .footer-widget {
        animation: none;
    }

    .loading-message i {
        animation: none;
    }

    * {
        transition: none !important;
    }
}