* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

/* Header / Navbar */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 15px 0;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.navbar h1 {
    color: #fff;
    font-size: 1.5em;
}

.navbar nav a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    transition: color 0.2s;
}

.navbar nav a:hover {
    color: #fff;
}

/* Cards */
.card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.card h2 {
    margin-bottom: 20px;
    color: #444;
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group textarea,
.form-group input[type="text"],
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1em;
    font-family: inherit;
    transition: border-color 0.2s;
    resize: vertical;
}

.form-group textarea:focus,
.form-group input[type="text"]:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    min-height: 120px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
    padding: 6px 14px;
    font-size: 0.85em;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.85em;
}

/* Risposta LLM */
.response-box {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    padding: 20px;
    border-radius: 0 8px 8px 0;
    margin-top: 15px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.response-meta {
    display: flex;
    gap: 20px;
    margin-top: 10px;
    font-size: 0.9em;
    color: #888;
}

/* Tabella storico */
.history-table {
    width: 100%;
    border-collapse: collapse;
}

.history-table th,
.history-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.history-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
}

.history-table tr:hover {
    background: #f8f9fa;
}

.prompt-preview {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Messaggi */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Loading spinner */
.loading {
    display: none;
    text-align: center;
    padding: 20px;
}

.loading.active {
    display: block;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dettaglio query */
.detail-label {
    font-weight: 600;
    color: #555;
    margin-bottom: 5px;
}

.detail-value {
    margin-bottom: 15px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: #aaa;
    font-size: 0.85em;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    .card {
        padding: 20px;
    }

    .navbar .container {
        flex-direction: column;
        gap: 10px;
    }

    .response-meta {
        flex-direction: column;
        gap: 5px;
    }
}