/* Reset e base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #0a2540 0%, #1a73e8 100%);
    color: #333;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Gestione schermate */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: block;
}

/* Login Screen */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.logo-container {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    width: 120px;
    height: 120px;
    margin-bottom: 1rem;
    border-radius: 50%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.logo-container h1 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
}

.login-form {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

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

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #0a2540;
}

.input-group input {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #1a73e8;
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    background: #1a73e8;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: #1557b0;
}

.btn-primary:active {
    transform: scale(0.98);
}

.error-message {
    margin-top: 1rem;
    padding: 0.8rem;
    background: #ffebee;
    color: #c62828;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9rem;
}

/* Dashboard Screen */
.app-header {
    background: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.app-header h2 {
    color: #0a2540;
    font-size: 1.5rem;
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #0a2540;
    padding: 0.5rem;
}

.dashboard-content {
    padding: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.welcome-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.welcome-card h3 {
    color: #0a2540;
    margin-bottom: 0.5rem;
}

.btn-large {
    margin-bottom: 2rem;
    padding: 1.2rem;
    font-size: 1.1rem;
}

.clients-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.client-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.client-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.client-card h4 {
    color: #0a2540;
    margin-bottom: 0.5rem;
}

.client-card p {
    color: #666;
    font-size: 0.9rem;
}