:root {
    /* Palette de couleurs */
    --color-primary: #0149ad;
    --color-primary-dark: #376fbd;
    --color-text: #1f2a40;
    --color-text-light: #4c5c78;
    --color-text-footer: #9db2d1;
    --color-text-muted: #b7c6dd;
    --color-background: #f4f8fc;
    --color-white: #ffffff;
    --color-border: #dce6f4;
    --color-dark: #0e1e3a;
    --color-dark-lighter: #bdd0e9;
    --color-dark-border: #2e3e5c;
    --color-blue: #007bff;
    --color-gray-light: #e9f0fa;
    /* Ombres */
    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 0 10px rgba(0, 0, 0, 0.1);

    /* Espacement */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.8rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Bordures */
    --border-radius: 4px;
    --border-radius-lg: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-image: url('https://media.gettyimages.com/id/486581765/fr/photo/senegal-baobab-at-sine-saloum-park.jpg?s=612x612&w=0&k=20&c=8p8URjbjwKGDQhPWiOWhePCGk4e8rmZ1ECuvRF-GReo=');
    background-repeat: no-repeat;
    background-size: cover;
    color: var(--color-text);
    line-height: 1.6;
}

.header {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.tagline {
    font-size: 1rem;
    font-style: italic;
}


.auth-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    max-width: 500px;
}


@media (min-width: 768px) {
    .auth-container {
        flex-direction: row;
    }
}

.auth-section {
    flex: 1;
    background-color: var(--color-white);
    border-radius: 12px;
    padding: 18px;
    box-shadow: var(--shadow-md);
}

h2 {
    color: var(--color-primary);
    margin-bottom: 8px;
    text-align: center;
}

.form-group {
    margin-bottom: 8px;
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="password"],
select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.btnaction {
    background-color: var(--color-primary) !important;
    color: var(--color-white) !important;
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) 8px;
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
    font-weight: 600;
    transition: background-color 0.3s;
}

.btnaction a {
    text-decoration: none;
    color: var(--color-white) !important;
    ;
}

.alt-action {
    text-align: center;
    margin-top: 8px;
    font-size: 0.9rem;
}

.alt-action a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.alt-action a:hover {
    text-decoration: underline;
}

.separator {
    text-align: center;
    margin: var(--spacing-lg) 0;
    position: relative;
}

.separator::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    width: 40%;
    height: 1px;
    background-color: var(--color-border);
}

.separator::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 0;
    width: 40%;
    height: 1px;
    background-color: var(--color-border);
}

.social-login {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: 8px;
}

.social-btn {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    background-color: var(--color-white);
    transition: background-color 0.3s;
}

.social-btn:hover {
    background-color: var(--color-background);
}

.footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
}

.promo-banner {
    margin-top: var(--spacing-xl);
    background-color: var(--color-secondary);
    padding: 8px;
    border-radius: var(--border-radius-lg);
    color: var(--color-white);
    text-align: center;
}

.promo-banner h3 {
    margin-bottom: var(--spacing-md);
}

.toggle-container {
    display: flex;
    margin-bottom: var(--spacing-xl);
    justify-content: center;
    gap: var(--spacing-md);
}

.toggle-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    cursor: pointer;
    background-color: var(--color-background);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
}

.toggle-btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

#login-section,
#signup-section {
    display: none;
}

#login-section.active,
#signup-section.active {
    display: block;
}

/* Responsive design */
@media (max-width: 767px) {
    .auth-section {
        padding: 8px;
    }

    .logo {
        font-size: 1.5rem;
    }

    .social-login {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.8rem 0;
    }
}