:root {
    --bg-color: #121212;
    --card-bg: #1f1f1f;
    --text-color: #ffffff;
    --text-secondary: #aaa;
    --accent-color: #e53935;
    --border-color: #333;
    --input-bg: #2a2a2a;
}

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

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: #1f1f1f;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #e53935;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    margin-left: 1.5rem;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

nav a.active, nav a:hover {
    background-color: #e53935;
}

main {
    padding: 2rem;
}

/* Additional styles for client list, details, etc. will be added here */

.clients-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.clients-header h1 {
    margin: 0;
}

.clients-header .actions {
    display: flex;
    gap: 1rem;
}

#search-input {
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid #333;
    background-color: #2a2a2a;
    color: white;
}

.add-client-btn, .edit-client-btn, .add-treatment-btn, .back-to-list-btn {
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: none;
    background-color: #e53935;
    color: white;
    cursor: pointer;
}

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

.client-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #333;
}

.client-info {
    display: flex;
    flex-direction: column;
}

.client-name {
    font-weight: bold;
}

.client-email {
    color: #aaa;
    font-size: 0.9rem;
}

.client-actions button {
    margin-left: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: 1px solid #555;
    background-color: #333;
    color: white;
    cursor: pointer;
}

.client-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.tabs {
    margin-bottom: 1rem;
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #333;
    background-color: transparent;
    color: white;
    cursor: pointer;
}

.tab-btn.active {
    background-color: #e53935;
    border-color: #e53935;
}

.tab-content {
    display: none;
    padding: 1rem;
    border: 1px solid #333;
    border-radius: 5px;
}

.tab-content.active {
    display: block;
}

.treatment-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
    padding: 1rem 0;
}

.treatment-card:last-child {
    border-bottom: none;
}

.treatment-actions button {
    margin-left: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: 1px solid #555;
    background-color: #333;
    color: white;
    cursor: pointer;
}

/* --- MODIFICA QUI --- */
/* Client Form Styles (Add and Edit) */
#edit-client-form,
#add-client-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 2rem auto;
    padding: 2rem;
    border: 1px solid #333;
    border-radius: 5px;
}

#edit-client-form label,
#add-client-form label {
    font-weight: bold;
}

#edit-client-form input,
#edit-client-form textarea,
#add-client-form input,
#add-client-form textarea {
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid #555;
    background-color: #2a2a2a;
    color: white;
}

#edit-client-form button,
#add-client-form button {
    padding: 0.75rem;
    border-radius: 5px;
    border: none;
    color: white;
    cursor: pointer;
}

#edit-client-form button[type="submit"],
#add-client-form button[type="submit"] {
    background-color: #e53935;
}

#edit-client-form button[type="button"],
#add-client-form button[type="button"] {
    background-color: #555;
}
/* --- FINE MODIFICA --- */

/* Add & Edit Treatment Form Styles */
#add-treatment-form,
#edit-treatment-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 2rem auto;
    padding: 2rem;
    border: 1px solid #333;
    border-radius: 5px;
}

#add-treatment-form label,
#edit-treatment-form label {
    font-weight: bold;
}

#add-treatment-form input,
#add-treatment-form textarea,
#edit-treatment-form input,
#edit-treatment-form textarea {
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid #555;
    background-color: #2a2a2a;
    color: white;
}

#add-treatment-form button,
#edit-treatment-form button {
    padding: 0.75rem;
    border-radius: 5px;
    border: none;
    color: white;
    cursor: pointer;
}

#add-treatment-form button[type="submit"],
#edit-treatment-form button[type="submit"] {
    background-color: #e53935;
}

#add-treatment-form button[type="button"],
#edit-treatment-form button[type="button"] {
    background-color: #555;
}


/* Responsive Design */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }

    nav {
        margin-top: 1rem;
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    nav a {
        margin-left: 0;
    }

    .clients-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .clients-header .actions {
        width: 100%;
        margin-top: 1rem;
        flex-direction: column;
    }

    .client-list li, .client-detail-header, .treatment-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* Authentication UI Styles */
.user-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
}

.user-name {
    color: var(--text-color);
    font-weight: 500;
}

.logout-btn {
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: 1px solid var(--accent-color);
    background-color: transparent;
    color: var(--accent-color);
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

.logout-btn:hover {
    background-color: var(--accent-color);
    color: white;
}

/* Responsive adjustments for user header */
@media (max-width: 768px) {
    .user-header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .user-info {
        width: 100%;
        justify-content: flex-start;
    }
    
    .logout-btn {
        align-self: flex-end;
    }
}