.main-content,
.back-to-hub-container,
footer {
    position: relative;
    z-index: 1;
}

.back-to-hub-container {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 100;
}

.back-to-hub-button {
    font-family: var(--subtitle-font);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background-color: rgba(26, 11, 46, 0.8);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all var(--transition-speed) ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.back-to-hub-button:hover {
    background-color: var(--color-accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.back-arrow-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 60px;
    padding-bottom: 90px;
}

.welcome-title {
    font-family: var(--title-font);
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    background: linear-gradient(to right, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 10px rgba(147, 51, 234, 0.3);
    letter-spacing: 1px;
    margin-top: 60px;
    padding: 0 20px;
}

.choice-container {
    padding: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    margin: 0 auto;
    margin-bottom: 60px;
}

.choice-box {
    background-color: rgba(26, 11, 46, 0.5);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    width: 100%;
}

.choice-box:hover {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.choice-title {
    font-family: var(--title-font);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-secondary);
    display: flex;
    align-items: center;
}

.choice-description {
    font-family: var(--subtitle-font);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-base);
}

.difficulty-buttons {
    font-size: var(--font-size-lg);
    font-family: var(--subtitle-font);
    display: flex;
    gap: var(--spacing-sm);
}

.difficulty-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--spacing-sm);
}

.difficulty-button {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-accent-primary);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-speed) ease;
    border: none;
    cursor: pointer;
    flex: 1;
    text-align: center;
    margin-bottom: 8px;
}

.difficulty-button:hover {
    background-color: var(--color-accent-secondary);
    transform: translateY(-2px);
}

.difficulty-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-family: var(--subtitle-font);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.form-input {
    font-family: var(--title-font);
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    color: white;
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 2px rgba(147, 51, 234, 0.2);
}

.login-button {
    font-family: var(--subtitle-font);
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-accent-primary);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    transition: all var(--transition-speed) ease;
    text-align: center;
    border: none;
    cursor: pointer;
}

.login-button:hover {
    background-color: var(--color-accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.form-footer {
    font-family: var(--subtitle-font);
    text-transform: capitalize;
    margin-top: var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

.form-footer a {
    text-transform: uppercase;
    color: var(--color-accent-secondary);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.form-footer a:hover {
    color: var(--color-accent-tertiary);
    text-decoration: underline;
}

.game-info-section {
    width: 100%;
    background-color: transparent;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.game-info-container {
    max-width: 1000px;
    width: 90%;
    margin: 0 auto;
}

.game-info-title {
    font-family: var(--title-font);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--color-accent-secondary);
}

.game-info-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.game-info-item {
    background-color: rgba(26, 11, 46, 0.5);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.game-info-item h3 {
    text-align: center;
    font-family: var(--title-font);
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-md);
}

.game-info-item p {
    text-align: center;
    font-family: var(--subtitle-font);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-base);
}

/* Mantengo queste classi per retrocompatibilità */
.ai-info-section {
    width: 100%;
    background-color: transparent;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.ai-info-container {
    max-width: 1000px;
    width: 90%;
    margin: 0 auto;
}

.ai-info-title {
    font-family: var(--title-font);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--color-accent-secondary);
}

.ai-info-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.ai-info-item {
    background-color: rgba(26, 11, 46, 0.5);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.ai-info-item h3 {
    text-align: center;
    font-family: var(--title-font);
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-md);
}

.ai-info-item p {
    text-align: center;
    font-family: var(--subtitle-font);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-base);
}

.info-icon {
    cursor: pointer;
    margin-left: 5px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-speed);
    position: relative;
}

.info-icon:hover {
    color: var(--color-accent-secondary);
}

.info-tooltip {
    display: none;
    position: absolute;
    background-color: rgba(26, 11, 46, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    width: 220px;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    left: 40px;
    top: -25px;
}

.info-container {
    position: relative;
    display: inline-block;
}

.info-container:hover .info-tooltip {
    display: block;
}

@media (max-width: 992px) {
    .choice-container {
        width: 80%;
    }

    .game-info-content,
    .ai-info-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .main-content {
        padding-bottom: 60px;
    }
}

@media (max-width: 768px) {
    .welcome-title {
        font-size: 1.8rem;
        margin-bottom: var(--spacing-lg);
        margin-top: 80px;
    }

    .choice-container {
        width: 90%;
    }

    .game-info-content,
    .ai-info-content {
        grid-template-columns: 1fr;
    }

    .main-content {
        padding-top: 40px;
        padding-bottom: 40px;
    }

    .back-to-hub-container {
        top: 10px;
        left: 10px;
    }
}

@media (max-width: 480px) {
    .welcome-title {
        font-size: 1.5rem;
        padding: 0 15px;
        margin-top: 80px;
    }

    .choice-container {
        width: 95%;
    }

    .choice-box {
        padding: var(--spacing-md);
    }

    .main-content {
        padding-top: 30px;
        padding-bottom: 30px;
    }

    .back-to-hub-button {
        padding: 8px 12px;
        font-size: 12px;
    }

    .login-button {
        padding: var(--spacing-sm);
        font-size: var(--font-size-base);
    }
}

@media (max-width: 768px) {
    .page-container::before {
        background-image: url('/assets/images/logo_mobile.svg');
        background-size: 100% auto;
        background-position: center 90%;
    }
}